JP2019030879A - Mold for hot forging and method of manufacturing forged product - Google Patents
Mold for hot forging and method of manufacturing forged product Download PDFInfo
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- JP2019030879A JP2019030879A JP2017151498A JP2017151498A JP2019030879A JP 2019030879 A JP2019030879 A JP 2019030879A JP 2017151498 A JP2017151498 A JP 2017151498A JP 2017151498 A JP2017151498 A JP 2017151498A JP 2019030879 A JP2019030879 A JP 2019030879A
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- 238000005242 forging Methods 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 103
- 239000000463 material Substances 0.000 claims description 37
- 230000002787 reinforcement Effects 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 description 17
- 239000000956 alloy Substances 0.000 description 17
- 239000000047 product Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 229910001315 Tool steel Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000009497 press forging Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001247 waspaloy Inorganic materials 0.000 description 1
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Abstract
Description
本発明は、熱間鍛造用金型およびそれを用いた鍛造製品の製造方法に関するものであり、より具体的には型鍛造用の熱間鍛造用金型等に関するものである。 The present invention relates to a hot forging die and a method for producing a forged product using the same, and more specifically to a hot forging die for die forging and the like.
航空機エンジンや蒸気タービンに用いられるタービンブレード（以下単に「ブレード」という。）用素材を製造する場合、鍛造用素材を上型と下型の間に挟み込んで、大型のプレス鍛造でブレード用素材に成形する方法が主流である。近年、蒸気タービンの高効率化の要請により、蒸気タービンに用いられるブレードも長尺化してきており。例えば、約１５００ｍｍを超える長尺のブレード用素材も製造される。かかる長尺のブレード用素材を製造する場合には、非常に高い加圧力を有する鍛造装置およびそれに耐えうる金型が必要になる。
例えば、荷重が１万トンを超える規模の大型熱間鍛造装置に用いられる熱間鍛造用金型を一体物で製造すると、金型は、その素材重量が５０トンを超えるような大型のものになる。かかる場合には、金型の一部に割れ等の修復不能な欠陥が生じると、金型全体を廃棄する必要があり、非常に不経済であった。
これに対し、特開２０１４−２０８３７９号公報（特許文献１）には、長尺材用の熱間鍛造用金型であって、複数個の熱間鍛造用金型片が長尺材の長手方向に一列に並べられた一体の組立て体である熱間鍛造用金型の提案がある。かかる提案によれば、個々の金型片を小さくすることができるため、廃棄する部分を削減し、鍛造製品の製造コストを低減できる利点がある。
When manufacturing materials for turbine blades (hereinafter simply referred to as “blades”) used in aircraft engines and steam turbines, the forging material is sandwiched between the upper die and the lower die, and the material for the blade is obtained by large-scale press forging. The method of forming is the mainstream. In recent years, blades used in steam turbines have become longer due to the demand for higher efficiency of steam turbines. For example, a long blade material exceeding about 1500 mm is also manufactured. When manufacturing such a long blade material, a forging device having a very high pressing force and a die capable of withstanding it are required.
For example, when a die for hot forging used in a large-scale hot forging device with a load exceeding 10,000 tons is manufactured as a single piece, the die has a large size with a material weight exceeding 50 tons. Become. In such a case, if an irreparable defect such as a crack occurs in a part of the mold, it is necessary to discard the entire mold, which is very uneconomical.
On the other hand, in Japanese Patent Application Laid-Open No. 2014-208379 (Patent Document 1), there is a hot forging die for a long material, and a plurality of hot forging die pieces are long in the length of the long material. There is a proposal of a hot forging die which is an integrated assembly lined up in a direction. According to such a proposal, since individual mold pieces can be made small, there is an advantage that the portion to be discarded can be reduced and the manufacturing cost of the forged product can be reduced.
しかしながら、特開２０１４−２０８３７９号公報による提案では、金型片を交換する場合に、金型全体を分解して組み直す必要があり、金型片の交換に係る作業は十分に簡略化されたものではなかった。また、割れ等の欠陥以外に、摩耗によっても金型交換は必要になるが、かかる摩耗の程度は金型の部位によって大きく異なるため、特開２０１４−２０８３７９号公報に開示された提案をもってしても、金型の材料ロスが大きく、製造コストの低減は十分なものとは言えなかった。
上記課題に鑑み、本発明は、熱間鍛造用金型の交換にかかる作業を簡略化すること、および製造コストを低減することが可能な熱間鍛造用金型およびそれを用いた鍛造製品の製造方法を提供することを目的とする。
However, in the proposal according to Japanese Patent Laid-Open No. 2014-208379, when exchanging mold pieces, it is necessary to disassemble and reassemble the entire mold, and the work related to exchanging mold pieces is sufficiently simplified. It wasn't. In addition to defects such as cracks, it is also necessary to replace the mold due to wear, but the degree of wear varies greatly depending on the part of the mold, so with the proposal disclosed in Japanese Unexamined Patent Application Publication No. 2014-208379. However, the material loss of the mold was large, and the reduction in manufacturing cost was not sufficient.
In view of the above-described problems, the present invention provides a hot forging die capable of simplifying work for exchanging a hot forging die and reducing the manufacturing cost, and a forged product using the hot forging die. An object is to provide a manufacturing method.
本発明は、凹状の型彫り面を有する熱間鍛造用金型であって、前記熱間鍛造用金型は、本体部分と、前記本体部分より熱間強度が高く、かつ着脱可能な補強部材と、を備え、前記型彫り面の縁部分の少なくとも一部が前記補強部材で構成されている熱間鍛造用金型である。 The present invention is a hot forging die having a concave engraved surface, the hot forging die having a hot strength higher than that of the main body portion and the main body portion, and a detachable reinforcing member. And a hot forging die in which at least a part of an edge portion of the die-carved surface is constituted by the reinforcing member.
また、前記熱間鍛造用金型において、前記補強部材は、前記型彫り面の縁に沿って隣接配置された複数の補強部材片を有することが好ましい。
また、前記型彫り面の輪郭が長方形状であり、前記輪郭の角の少なくとも一つに前記補強部材が配置されていることが好ましい。
In the hot forging die, it is preferable that the reinforcing member has a plurality of reinforcing member pieces arranged adjacent to each other along an edge of the engraved surface.
Moreover, it is preferable that the contour of the engraved surface is rectangular, and the reinforcing member is disposed at at least one of the corners of the contour.
また、前記熱間鍛造用金型において、前記型彫り面の輪郭が長方形状であり、前記補強部材が、少なくとも前記長方形状の長辺側に配置されていることが好ましい。 Further, in the hot forging die, it is preferable that an outline of the engraved surface is rectangular and the reinforcing member is disposed at least on the long side of the rectangular shape.
さらに、前記熱間鍛造用金型において、前記補強部材は、前記型彫り面の彫り込み方向に垂直な方向の凹凸を有し、前記金型の本体部分は、前記凹凸に嵌合する凹凸を有し、前記補強部材の凹凸が前記金型の本体部分の凹凸に嵌合することにより、前記補強部材が前記型彫り面の彫り込み方向で拘束されることが好ましい。 Further, in the hot forging die, the reinforcing member has irregularities in a direction perpendicular to the engraving direction of the mold engraving surface, and the main body portion of the mold has irregularities that fit into the irregularities. And it is preferable that the said reinforcement member is restrained by the engraving direction of the said engraving surface by fitting the unevenness | corrugation of the said reinforcement member to the unevenness | corrugation of the main-body part of the said metal mold | die.
別の本発明は、加熱された鍛造用素材を上記いずれかの熱間鍛造用金型を用いて熱間鍛造し、鍛造製品を得る鍛造製品の製造方法である。 Another aspect of the present invention is a method for producing a forged product in which a forged product is obtained by hot forging a heated forging material using any of the hot forging dies described above.
なお、上記構成は互いに適宜組み合わせることもできる。 In addition, the said structure can also be suitably combined with each other.
本発明によれば、熱間鍛造用金型の廃棄、交換にかかる作業を簡略化し、製造コストを低減することが可能な熱間鍛造用金型およびそれを用いた鍛造製品の製造方法を提供することができる。 According to the present invention, there is provided a hot forging die capable of simplifying the work for disposal and replacement of a hot forging die and reducing the manufacturing cost, and a method for producing a forged product using the same. can do.
本発明は、鍛造製品の形状に応じた凹状の型彫り面を有する、いわゆる型鍛造用の熱間鍛造用金型に係るものである。かかる型鍛造の場合、実際の使用において凹状の型彫り面の縁の部分の摩耗が特に顕著である。この場合、特開２０１４−２０８３７９号公報で提案される構成では、摩耗が少ない部位も含めて金型を交換、廃棄等しなければならず、コストを十分に低減することができないという課題がある。本発明は、型彫り面の縁部分の少なくとも一部に、金型の本体部分よりも熱間強度が高い、着脱可能な補強部材を配置することで、かかる課題を解決するものである。
以下、本発明に係る熱間鍛造用金型の実施形態を、図を用いて具体的に説明するが、本発明はこれに限定されるものではない。また、各実施形態において説明する構成は、他の実施形態の趣旨を損なわない限りにおいて、他の実施形態においても適用することおよび互いに組み合わせることが可能であり、その場合、重複する説明は適宜省略する。
The present invention relates to a hot forging die for so-called die forging, which has a concave die-cut surface corresponding to the shape of a forged product. In the case of such die forging, wear of the edge portion of the concave die-carved surface is particularly remarkable in actual use. In this case, in the configuration proposed in Japanese Patent Application Laid-Open No. 2014-208379, there is a problem that the die must be exchanged and discarded including a portion with less wear, and the cost cannot be reduced sufficiently. . This invention solves this subject by arrange | positioning the removable reinforcement member whose hot strength is higher than the main-body part of a metal mold | die in at least one part of the edge part of a die-carving surface.
Hereinafter, embodiments of a hot forging die according to the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto. In addition, the configuration described in each embodiment can be applied to other embodiments and combined with each other as long as the gist of the other embodiments is not impaired. To do.
＜第１の実施形態＞
図１（ａ）は、本発明に係る熱間鍛造用金型の一実施形態を示す斜視図であり、図１（ｂ）は図１（ａ）のＡ−Ａの位置における断面のうち左側の部分を拡大した部分断面図である。図１（ａ）に示す熱間鍛造用金型（以下、単に金型ともいう）は、例えば、棒状の鍛造用素材を熱間鍛造によってブレードのような長尺の製品形状に成形するものである。図１（ａ）に示す熱間鍛造用金型１００（以下、単に金型１００ともいう）の本体部分１の表面には製品形状に応じた凹状（掘り込み部分）の型彫り面２が形成されている。本発明では前記の掘り込み部分を「型彫り面」として説明する。なお、図１（ａ）に示す金型は、鍛造用素材を押圧するための上型および下型のうち、下型である。図示は省略するが、上型にも下型の型彫り面に対応する位置に型彫り面が形成されている。長尺の鍛造製品に対応して、図１（ａ）に示す金型１００の型彫り面２の輪郭（加圧によって鍛造用素材が充満する凹部の縁３がなす形状）は、一方向に長い形状を有する。より具体的には、かかる輪郭は長方形状である。
なお、型彫り面の輪郭の形状は図１に示す実施形態の形状に限るものではない。例えば、図１に示す形状以外の長方形状であってもよい。ここで、長方形状とは、実質的に四つの角部を有し、相対的に一方向に長い形状を意味し、例えば、一般的な長方形の他、角にアールまたは面取り部を有する長方形、各辺に凹凸を有する長方形を含む。また、実質的に四つの角部を有し、相対的に一方向に長い形状であれば、根部と翼部を有するブレード素材用の場合のように長手方向に幅が変化している形状も長方形状に含まれる。さらに、型彫り面の輪郭の形状は長方形状に限らず、例えば、長手方向および短手方向を観念できるが長手方向の先端全体が曲線であるレーストラックのような形状や異形状でもよい。
<First Embodiment>
Fig.1 (a) is a perspective view which shows one Embodiment of the metal mold | die for hot forging concerning this invention, FIG.1 (b) is the left side among the cross sections in the position of AA of Fig.1 (a). It is the fragmentary sectional view which expanded the part. The hot forging die shown in FIG. 1A (hereinafter also simply referred to as a die) is formed, for example, by forming a rod-like forging material into a long product shape such as a blade by hot forging. is there. On the surface of the main body portion 1 of the hot forging die 100 (hereinafter also simply referred to as the die 100) shown in FIG. 1 (a), a concave (excavated portion) die engraving surface 2 corresponding to the product shape is formed. Has been. In the present invention, the above-described digging portion will be described as a “engraved surface”. In addition, the metal mold | die shown to Fig.1 (a) is a lower mold | type among the upper mold | type and lower mold | die for pressing the forging raw material. Although not shown in the drawings, the upper die is also formed with a carved surface at a position corresponding to the lower carved surface. Corresponding to a long forged product, the contour of the engraved surface 2 of the mold 100 shown in FIG. 1A (the shape formed by the edge 3 of the recess filled with the forging material by pressurization) is in one direction. Has a long shape. More specifically, such contour is rectangular.
Note that the shape of the contour of the engraved surface is not limited to the shape of the embodiment shown in FIG. For example, a rectangular shape other than the shape shown in FIG. Here, the rectangular shape has substantially four corners and means a shape that is relatively long in one direction. For example, in addition to a general rectangle, a rectangle having a rounded or chamfered portion at a corner, Includes a rectangle with irregularities on each side. In addition, if the shape has substantially four corners and is relatively long in one direction, the shape in which the width is changed in the longitudinal direction as in the case of a blade material having a root portion and a wing portion can also be used. Included in a rectangular shape. Further, the shape of the contour of the engraved surface is not limited to a rectangular shape, and for example, a shape such as a race track in which the longitudinal direction and the short-side direction are curved, but a different shape may be used.
型彫り面を形成した金型で型鍛造を行う場合、欠肉を防ぐとともに、上型と下型による圧下の終盤で加圧力が急激に上昇して過負荷になることを防ぐため、型彫り面の縁を超えて鍛造用素材をはみ出させるための隙間（ばり道）を上型と下型の間に設けるのが一般的である。この場合、型彫り面の縁の部分の金型の摩耗や損傷が特に著しくなり、型彫り面の縁の部分と、その内側の型彫り面の中央寄りの部分とで、摩耗や損傷の程度が大きく異なることになる。かかる問題に対して、特開２０１４−２０８３７９号公報で提案されている構成では、一方向に長い型彫り面を有する金型が長手方向に分割されているため、摩耗等が生じた部分を交換しようとすると内側の部分も含む全体を交換せざるを得なくなり、金型の交換等にかかるコストを十分に低減することができない。 When performing die forging with a die with a carved surface, die cutting is performed in order to prevent overburden and prevent overload due to a sudden increase in pressure at the final stage of the upper and lower molds. It is common to provide a gap (flash road) between the upper die and the lower die for protruding the forging material beyond the edge of the surface. In this case, the wear and damage of the mold at the edge of the carved surface becomes particularly significant, and the degree of wear and damage at the edge of the carved surface and the part near the center of the inner carved surface. Will be very different. With respect to such a problem, in the configuration proposed in Japanese Patent Application Laid-Open No. 2014-208379, a mold having a long engraved surface in one direction is divided in the longitudinal direction. When trying to do so, the entire part including the inner part must be replaced, and the cost for replacing the mold cannot be reduced sufficiently.
これに対して、図１に示す実施形態では、型彫り面２の縁３に、金型の本体部分１よりも熱間強度が高い、着脱可能な補強部材４を備えている。摩耗等が激しい縁３の部分に相対的に熱間強度が高い補強部材４を配置することで、金型の寿命を延ばすことができる。さらに、かかる補強部材４が着脱可能であるため、補強部材４が摩耗等して使用不能になった場合には、補強部材４のみを交換すればよい。従って、金型の交換作業が大幅に簡略化され、材料ロスも低減される。また、後述する超耐熱合金等の補強部材用の材料は金型の本体部分に比べて高価になるが、補強部材の部分だけ交換すればよいので、金型の維持・交換コストの大幅な低減が可能である。着脱可能な補強部材を用いる構成は、型彫り面、引いてはそれを形成する金型が大きくなればなるほどその効果が大きくなるため、例えば型彫り面（輪郭）の最大寸法（最長部）が１０００ｍｍ以上の場合に好適であり、２０００ｍｍ以上の場合に特に好適である。
型彫り面を補強する技術としては肉盛溶接があるが、肉盛溶接を施すためには金型自体を予熱する必要があるうえ、型彫り面が複雑な形状である場合には肉盛溶接をするためのトーチの配置自体が困難な場合もあり、金型の補強や手直しに係る工程が非常に煩雑になる。かかる問題を抱える肉盛溶接に比べて、図１に示す実施形態は、極めて優れた効果を発揮するものである。
On the other hand, in the embodiment shown in FIG. 1, the detachable reinforcing member 4 having higher hot strength than the main body portion 1 of the mold is provided on the edge 3 of the engraved surface 2. By disposing the reinforcing member 4 having a relatively high hot strength at the edge 3 where the wear or the like is severe, the life of the mold can be extended. Further, since the reinforcing member 4 is detachable, when the reinforcing member 4 becomes unusable due to wear or the like, only the reinforcing member 4 needs to be replaced. Therefore, the mold replacement operation is greatly simplified, and the material loss is reduced. In addition, materials for reinforcing members such as super heat-resistant alloys, which will be described later, are more expensive than the main part of the mold, but it is only necessary to replace the part of the reinforcing member, greatly reducing the maintenance and replacement costs of the mold. Is possible. The structure using a detachable reinforcing member has a larger effect as the die engraved surface and, in turn, the mold forming it becomes larger. For example, the maximum dimension (longest part) of the engraved surface (contour) is It is suitable for a case of 1000 mm or more, and particularly suitable for a case of 2000 mm or more.
There is overlay welding as a technique to reinforce the mold carved surface, but in order to perform overlay welding, it is necessary to preheat the mold itself, and when the mold carved surface has a complicated shape, overlay welding is performed. In some cases, the arrangement of the torch for carrying out the process itself is difficult, and the steps related to the reinforcement and reworking of the mold become very complicated. Compared with overlay welding which has such a problem, the embodiment shown in FIG. 1 exhibits extremely excellent effects.
補強部材に係る構成についてさらに詳述する。図１（ｂ）の断面図に示すように、型彫り面の縁３に配置された補強部材４の一部は、型彫り面の彫り込み方向（鍛造の加圧方向：ｚ方向）に垂直な方向で型彫り面に露出し、該型彫り面の一部を構成する。補強部材４の他の一部はｚ方向上側の表面に露出し、ばり道５の一部を構成する。摩耗等の損傷が激しい、凹状の型彫り面のｚ方向端部およびばり道を含む縁３の部分に補強部材４が配置されているため、摩耗等の対策および交換等に係る金型コスト低減に非常に効果的である。
補強部材４の上面の、ばり道を構成する部分から先には、型彫り面２から遠ざかるにしたがい下側に傾斜する傾斜部６、及びかかる傾斜部６の先に続く、ばり道を構成する面よりも下方に位置する面７で構成される、ばりだまり８が形成されている。図１（ｂ）に示す実施形態では、上述のばりだまり８が形成される位置で、補強部材４が金型の本体部分１に上方からボルト９によって着脱可能に固定されている。なお、図１（ａ）では、図１（ｂ）に示す補強部材のｚ方向上側の面の段差やボルトの図示は省略してある。ボルト固定の位置がばりだまりにあることによって、ボルト、ボルト穴等の固定構造が型鍛造中の鍛造用素材の肉流れを阻害することを回避できる。摩耗等によって補強部材４の交換が必要になった場合でも、交換対象が金型の本体部分に比べて極めて小さく、しかもボルト締めのような単純な作業で交換が済むため、交換作業は大幅に簡略化される。ボルト固定としては、所定の位置にネジ山を切った金型の本体部分にボルト固定してもよいし、ボルトとナットの対でボルト締めしてもよい。また、補強部材４の固定方法はこれを特に限定するものではない。例えば、押さえ治具で補強部材を拘束し、該押さえ治具をボルト等で固定することもできる。
The configuration related to the reinforcing member will be further described in detail. As shown in the cross-sectional view of FIG. 1 (b), a part of the reinforcing member 4 arranged on the edge 3 of the molding surface is perpendicular to the engraving direction of the molding surface (pressing direction of forging: z direction). Exposed to the mold carved surface in a direction and constitutes part of the carved surface. Another part of the reinforcing member 4 is exposed on the upper surface in the z direction, and constitutes a part of the beam path 5. Reinforcing member 4 is disposed at the edge 3 including the z-direction end of the concave die-carved surface and the beam path, which is severely damaged by wear and the like. It is very effective.
From the upper surface of the reinforcing member 4 to the tip of the part constituting the beam path, an inclined part 6 that inclines downward as it moves away from the carved surface 2 and a beam path that follows the tip of the inclined part 6 are formed. A lump 8 composed of a surface 7 positioned below the surface is formed. In the embodiment shown in FIG. 1 (b), the reinforcing member 4 is detachably fixed to the main body portion 1 of the mold from above by a bolt 9 at a position where the above-described burr 8 is formed. In FIG. 1 (a), illustration of steps and bolts on the upper surface in the z direction of the reinforcing member shown in FIG. 1 (b) is omitted. Since the bolt fixing positions are in a lump, it is possible to prevent the fixing structure such as bolts and bolt holes from obstructing the flow of the forging material during die forging. Even if it is necessary to replace the reinforcing member 4 due to wear or the like, the replacement object is extremely small compared to the main body of the mold, and the replacement can be done by a simple operation such as bolting. Simplified. As the bolt fixing, the bolt may be fixed to a main body portion of a mold having a thread cut at a predetermined position, or may be bolted with a pair of a bolt and a nut. Moreover, the fixing method of the reinforcing member 4 does not specifically limit this. For example, the reinforcing member can be restrained with a pressing jig, and the pressing jig can be fixed with a bolt or the like.
型彫り面２のうち、補強部材４の一部が露出している部分以外は金型の本体部分１で構成され、補強部材４で構成された面と本体部分１で構成された面とは、組立て上必要とされるクリアランスや精度ばらつきを超えるような隙間や段差は生じないようにして滑らかに接続されている。
図１に示す実施形態では、補強部材４は、縁に向かって立ち上がる型彫り面２の上側の一部を構成している。かかる構成では、型彫り面２の縁３に近い、ごく一部の部分を交換すればよいので、該構成はコスト低減の観点から好ましい。型彫り面２における補強部材４の下端の位置は、図１に示す構成に限らない。例えば、型彫り面２の、縁３に向かって立ち上がる部分の下端またはそれよりも型彫り面３の中心側に位置してもよい。かかる構成は、摩耗等の損傷がより広い範囲で想定される場合に好適である。
Of the engraved surface 2, the part other than the part where the reinforcing member 4 is exposed is composed of the main body part 1 of the mold, and the surface composed of the reinforcing member 4 and the surface composed of the main body part 1 are They are smoothly connected so that there are no gaps or steps that exceed the clearance and accuracy variations required for assembly.
In the embodiment shown in FIG. 1, the reinforcing member 4 constitutes a part of the upper side of the engraved surface 2 rising toward the edge. In such a configuration, since only a small part near the edge 3 of the engraved surface 2 may be replaced, this configuration is preferable from the viewpoint of cost reduction. The position of the lower end of the reinforcing member 4 on the mold carved surface 2 is not limited to the configuration shown in FIG. For example, you may be located in the lower end of the part which stands | starts up toward the edge 3 of the molding surface 2, or the center side of the molding surface 3 rather than it. Such a configuration is suitable when damage such as wear is assumed in a wider range.
金型の本体部分よりも熱間強度が高い補強部材を用いることで、金型寿命を延ばすことが期待できる。従って、補強部材の材質は、金型の本体部分よりも熱間強度が高ければこれを特に限定するものではない。ここでいう熱間強度は、熱間鍛造の際に金型表面が到達する温度における強度であり、例えば温度５００℃における引張強度をその指標とすることができる。金型の本体部分には、例えばＪＩＳで規定されるＳＫＤ６１、ＳＫＴ４等の熱間金型用の合金工具鋼を用いることができる。これに対して補強部材には、例えば、Ａｌｌｏｙ７１８等のＮｉ基超耐熱合金、高速度工具鋼等、熱間金型用の合金工具鋼へ長耐熱合金の肉盛溶接を行った物を用いることができる。このうちＡｌｌｏｙ７１８等のＮｉ基超耐熱合金が特に好ましい。また、金型の長寿命化の観点からは、補強部材の温度５００℃における引張強度は１０００ＭＰａ以上であることがより好ましい。
図１に示す実施形態では、着脱可能に構成する補強部材の全体が金型の本体部分よりも熱間強度が高い材料で構成されているが、型彫り面、ばり道等の、鍛造用素材が接触する金型の表面に、肉盛溶接等により相対的に熱間強度の高い材料を配置することもできる。すなわち、補強部材の一部が金型の本体部分よりも熱間強度が高い材料で構成されていてもよい。
By using a reinforcing member having a higher hot strength than that of the main body of the mold, it can be expected to extend the life of the mold. Accordingly, the material of the reinforcing member is not particularly limited as long as the hot strength is higher than that of the main body portion of the mold. The hot strength here is the strength at the temperature reached by the mold surface during hot forging, and for example, the tensile strength at a temperature of 500 ° C. can be used as the index. For example, alloy tool steel for hot molds such as SKD61 and SKT4 specified by JIS can be used for the main body portion of the mold. On the other hand, for the reinforcing member, for example, a Ni-base super heat-resistant alloy such as Alloy 718, a high-speed tool steel, or the like, which has been subjected to build-up welding of a long heat-resistant alloy to an alloy tool steel for hot molds, is used. Can do. Of these, Ni-based superalloys such as Alloy 718 are particularly preferred. Moreover, from the viewpoint of extending the life of the mold, the tensile strength of the reinforcing member at a temperature of 500 ° C. is more preferably 1000 MPa or more.
In the embodiment shown in FIG. 1, the entire reinforcing member configured to be detachable is made of a material having a higher hot strength than the main body portion of the mold. A material having a relatively high hot strength can also be disposed on the surface of the mold that comes into contact by overlay welding or the like. That is, a part of the reinforcing member may be made of a material having a higher hot strength than the main body portion of the mold.
図１に示す実施形態では、補強部材４は、型彫り面２の縁３に沿って隣接配置された複数の補強部材片４ａ〜４ｈを有する。図２に示す金型２００のように、図１で補強部材片４ａ〜４ｈが占める領域を一つの補強部材片１０で構成することもできるが、隣接配置された複数の補強部材片で補強部材を構成すること、すなわち補強部材を複数の補強部材片に分割された状態で配置することで、型鍛造の際の応力を分散し、補強部材にかかる最大応力を低減することができる。 In the embodiment shown in FIG. 1, the reinforcing member 4 has a plurality of reinforcing member pieces 4 a to 4 h arranged adjacent to each other along the edge 3 of the engraved surface 2. The area occupied by the reinforcing member pieces 4a to 4h in FIG. 1 can be constituted by one reinforcing member piece 10 as in the mold 200 shown in FIG. 2, but the reinforcing member is formed by a plurality of adjacently arranged reinforcing member pieces. In other words, by arranging the reinforcing member in a state where the reinforcing member is divided into a plurality of reinforcing member pieces, the stress during die forging can be dispersed and the maximum stress applied to the reinforcing member can be reduced.
また、型彫り面の輪郭が長方形状である図１に示す実施形態では、型彫り面の縁に沿って隣接配置された複数の補強部材片の一部が長方形状の輪郭の四つ角に配置されている。型彫り面の角は応力が集中しやすい位置であるため、かかる位置に補強部材片を配置することは金型の長寿命化によりいっそう有効である。なお、図１に示す実施形態では、長方形状の輪郭の角に合計四つの補強部材片が配置されているが、輪郭の形状に応じて、少なくとも一つの補強部材片が必要な角の位置に配置されていればよい。 Further, in the embodiment shown in FIG. 1 in which the contour of the engraved surface is rectangular, a part of the plurality of reinforcing member pieces arranged adjacent to each other along the edge of the engraved surface is disposed at the four corners of the rectangular contour. ing. Since the corner of the mold carved surface is a position where stress is likely to concentrate, it is more effective to dispose the reinforcing member piece at such a position in order to extend the life of the mold. In the embodiment shown in FIG. 1, a total of four reinforcing member pieces are arranged at the corners of the rectangular outline, but at least one reinforcing member piece is at a required corner position according to the shape of the outline. It only has to be arranged.
さらに、型彫り面の輪郭が長方形状である図１に示す実施形態では、補強部材４は長方形状の長辺側に配置されている。輪郭が長方形状の型彫り面を有する金型で型鍛造を行う場合、短辺方向（ｙ方向）の鍛造用素材変形量が大きくなる傾向にあるため、長辺側の縁の部分の金型摩耗量等が多くなる。従って、少なくとも長辺側に補強部材４を配置することが金型の長寿命化に有利である。図１に示す実施形態のように、角部も含んだ長辺全体に補強部材４を配置することで補強部材による効果がさらに高められる。さらに、短辺側も含めた型彫り面の縁の全周に渡って補強部材を配置して補強部材による効果をよりいっそう高めることもできる。 Furthermore, in the embodiment shown in FIG. 1 in which the contour of the engraved surface is rectangular, the reinforcing member 4 is disposed on the long side of the rectangular shape. When performing die forging with a die having a rectangular engraved surface, the forging material deformation amount in the short side direction (y direction) tends to increase, so the die at the edge on the long side The amount of wear increases. Therefore, disposing the reinforcing member 4 at least on the long side is advantageous for extending the life of the mold. As in the embodiment shown in FIG. 1, the effect of the reinforcing member is further enhanced by arranging the reinforcing member 4 over the entire long side including the corners. Furthermore, the effect of the reinforcing member can be further enhanced by arranging the reinforcing member over the entire periphery of the edge of the engraved surface including the short side.
以上、型彫り面の輪郭が長方形状の場合の、型彫り面の縁における補強部材の配置形態について説明されているが、補強部材（補強部材片）の配置、大きさおよび数については、これに限らず、長方形状の場合も含め型彫り面の輪郭の形状、応力分布等に応じて決定することができる。なお、金型の本体部分についても複数の金型で構成されていても良い。 As mentioned above, although the arrangement | positioning form of the reinforcement member in the edge of a mold-engraving surface in case the outline of a mold-engraving surface is rectangular shape is demonstrated, The shape can be determined according to the shape of the contour of the engraved surface, the stress distribution, etc. Note that the body portion of the mold may also be composed of a plurality of molds.
＜第２の実施形態＞
図３を参照しつつ、本発明に係る熱間鍛造用金型の他の実施形態を説明する。図３に示す実施形態は、型彫り面の形態等については図１に示す実施形態と同様である。図３は図１（ａ）のＡ−Ａの位置と同様の位置における金型の断面図である。図３に示す実施形態は、金型の本体部分と補強部材との接触形態が図１に示す実施形態と異なる。補強部材１１は、その下部に、型彫り面１２の彫り込み方向（ｚ方向）に垂直な方向（型彫り面の縁に垂直な方向であって、図３ではｙ方向である。）に突出した、断面が矩形の凸部を有し、金型の本体部分１３には、かかる凸部と嵌め合わせ可能な凹部が設けられている。かかる凸部および凹部によって、補強部材、金型の本体部分、それぞれに凹凸が形成されている。補強部材１１の凹凸が金型の本体部分１３の凹凸に嵌合することにより、補強部材１１が型彫り面の彫り込み方向（ｚ方向）で拘束される。従って、鍛造の際に補強部材に上方に向かう強い摩擦力が働いても、補強部材の固定状態を安定に維持することができる。ばりだまり部分の位置でのボルト固定に加えて、より型彫り面に近い位置で補強部材を型彫り面の彫り込み方向で拘束するため、図１に示す実施形態に比べてよりいっそう強固に補強部材を固定することができる。
<Second Embodiment>
With reference to FIG. 3, another embodiment of the hot forging die according to the present invention will be described. The embodiment shown in FIG. 3 is the same as the embodiment shown in FIG. FIG. 3 is a cross-sectional view of the mold at the same position as the position AA in FIG. The embodiment shown in FIG. 3 is different from the embodiment shown in FIG. 1 in the form of contact between the main body portion of the mold and the reinforcing member. The reinforcing member 11 protrudes at a lower portion thereof in a direction perpendicular to the engraving direction (z direction) of the engraved surface 12 (a direction perpendicular to the edge of the engraved surface, which is the y direction in FIG. 3). The main body portion 13 of the mold has a concave portion that can be fitted with the convex portion. By the convex portions and the concave portions, irregularities are formed in the reinforcing member and the main body portion of the mold. By engaging the unevenness of the reinforcing member 11 with the unevenness of the main body portion 13 of the mold, the reinforcing member 11 is restrained in the engraving direction (z direction) of the mold engraving surface. Therefore, even if a strong frictional force acting upward is applied to the reinforcing member during forging, the fixed state of the reinforcing member can be stably maintained. In addition to fixing the bolt at the position of the burr portion, the reinforcing member is restrained in the engraving direction of the engraved surface at a position closer to the engraved surface, so that the reinforcing member is stronger than the embodiment shown in FIG. Can be fixed.
補強部材、金型の本体部分、それぞれに設ける凹凸の形態は、図３に示す形態に限られるものではない。例えば、補強部材に凹部、金型の本体部分に凸部を設けてもよい。また、凹凸の数や形状もこれを特に限定するものではない。例えば、嵌合する凹凸の組の数は図３のように一組でもよいし二組以上でもよい。凹凸の断面形状も図３に示す矩形の他、三角形等でもよい。但し、補強部材をより確実に固定するためには、彫り込み方向（ｚ方向）に垂直な平面で補強部材を拘束することが好ましく、かかる観点から凹凸の断面形状は矩形が好ましい。
図３に示す実施形態の補強部材では、凹凸は型彫り面側の反対側に設けられ、型彫り面の内側から外側に向かって補強部材が挿入されている。一方補強部材の型彫り面側に凹凸を設けることも可能である。例えば、図４に示す変形例のように、彫り込み方向（ｚ方向）に長い補強部材１４を用いて、補強部材の型彫り面１５を構成する部分よりも下方で金型の本体部分１６と嵌め合わせればよい。この場合、例えば、補強部材を型彫り面の外側から内側に向かう方向に挿入し、さらに押さえ治具１７で補強部材を固定することが可能である。補強部材の型彫り面を構成する部分の下端（末端）が型彫り面の底面側に至る場合には、図３のように型彫り面の内側から外側に向かって補強部材を挿入することは困難であるため、上述の変形例の構成が有効である。
また、図３に示す実施形態のような、凹凸の嵌合で補強部材を拘束する構成を用いる場合、型彫り面の角の部分も含めて補強部材を一体で構成すると、凹凸の嵌め合わせが困難になる。かかる場合、型彫り面の縁に沿って隣接配置された複数の補強部材片を有する上述の構成を採用し、角の部分を分離することによって、上記凹凸の嵌め合わせが可能になる。従って、型彫り面の縁に沿って隣接配置された複数の補強部材片を有する実施形態は、凹凸の嵌合で補強部材を拘束する構成を用いる場合に特に有効である。
The form of the unevenness provided on the reinforcing member and the main body of the mold is not limited to the form shown in FIG. For example, you may provide a recessed part in a reinforcement member, and a convex part in the main-body part of a metal mold | die. Further, the number and shape of the unevenness are not particularly limited. For example, the number of sets of concaves and convexes to be fitted may be one set as shown in FIG. 3, or two or more sets. The cross-sectional shape of the projections and depressions may be a triangle as well as the rectangle shown in FIG. However, in order to more securely fix the reinforcing member, it is preferable to constrain the reinforcing member with a plane perpendicular to the engraving direction (z direction), and from this viewpoint, the cross-sectional shape of the unevenness is preferably rectangular.
In the reinforcing member of the embodiment shown in FIG. 3, the unevenness is provided on the side opposite to the mold carved surface, and the reinforcing member is inserted from the inside to the outside of the carved surface. On the other hand, it is also possible to provide irregularities on the side of the reinforcing member that is engraved. For example, as in the modification shown in FIG. 4, the reinforcing member 14 that is long in the engraving direction (z direction) is used to fit the main body portion 16 of the mold below the portion constituting the die engraving surface 15 of the reinforcing member. You just need to match. In this case, for example, the reinforcing member can be inserted in the direction from the outside to the inside of the engraved surface, and further the reinforcing member can be fixed by the pressing jig 17. When the lower end (end) of the portion constituting the molding surface of the reinforcing member reaches the bottom side of the molding surface, inserting the reinforcing member from the inside to the outside of the molding surface as shown in FIG. Since it is difficult, the configuration of the above-described modification is effective.
In addition, when using a configuration in which the reinforcing member is constrained by concavity and convexity fitting as in the embodiment shown in FIG. 3, if the reinforcing member is integrally formed including the corners of the engraved surface, the concavity and convexity can be fitted together. It becomes difficult. In such a case, the above-described configuration having a plurality of reinforcing member pieces arranged adjacent to each other along the edge of the engraved surface is adopted, and the corners can be separated to allow the above-described unevenness to be fitted. Therefore, the embodiment having a plurality of reinforcing member pieces arranged adjacent to each other along the edge of the engraved surface is particularly effective when a configuration in which the reinforcing member is constrained by concavity and convexity is used.
次に、上述の熱間鍛造用金型を用いた鍛造製品の製造方法について説明する。加熱された鍛造用素材を上述の熱間鍛造用金型を用いて熱間鍛造し、鍛造製品を得る。ここでいう鍛造製品は、鍛造が完了した製品、すなわちさらに鍛造は行わない製品の他、さらに鍛造を行う中間製品も含む。鍛造用素材の材質はこれを特に限定するものではないが、航空機エンジン、蒸気タービン等の用途であれば、Ｎｉ基超耐熱合金またはＴｉ−６Ａｌ−４Ｖ等のＴｉ合金を鍛造用素材として用いることができる。なお、ここでいうＮｉ基超耐熱合金とは、含有する元素のうち、質量％でＮｉを最も多く含む、析出強化型の合金をいい、例えばＵｄｉｍｅｔ５２０相当合金（ＵｄｉｍｅｔはＳｐｅｃｉａｌ Ｍｅｔａｌｓ社の登録商標）、Ｕｄｉｍｅｔ７２０相当合金、Ｗａｓｐａｌｏｙ相当合金（ＷａｓｐａｌｏｙはＵｎｉｔｅｄ Ｔｅｃｈｎｏｌｏｇｉｅｓ社の登録商標）、Ａｌｌｏｙ７１８相当合金などである。鍛造用素材の準備の方法はこれを特に限定するものではなく、従来から知られている工程を経て鍛造用素材を準備すればよい。例えば、溶解法を用いて作製したインゴットに熱間鍛造および機械加工を施すことで鍛造用素材を準備することができる。鍛造素材は材質に応じた熱間鍛造温度に加熱されて、熱間鍛造に供される。熱間鍛造温度は、例えばＮｉ基超耐熱合金であれば８５０〜１１５０℃、Ｔｉ合金であれば８００〜１１００℃が実用的な範囲である。加熱された鍛造用素材は型彫り面を備えた下型に載置され、下型と上型で圧下される。この際、鍛造用素材の一部は凹状の型彫り面からはみ出し、ばりを形成する。なお、ここでいう「熱間鍛造」には、恒温鍛造やホットダイも含まれる。 Next, a method for producing a forged product using the above-described hot forging die will be described. The heated forging material is hot forged using the hot forging die described above to obtain a forged product. The forged product here includes not only a product for which forging is completed, that is, a product that is not further forged, but also an intermediate product that is further forged. The material of the forging material is not particularly limited, but for applications such as aircraft engines and steam turbines, a Ni-based superalloy or Ti-6Al-4V or other Ti alloy should be used as the forging material. Can do. The Ni-based super heat-resistant alloy mentioned here refers to a precipitation-strengthened alloy containing the largest amount of Ni among the elements contained. For example, an alloy equivalent to Udimet 520 (Udimet is a registered trademark of Special Metals) , Udimet 720 equivalent alloy, Waspaloy equivalent alloy (Waspalo is a registered trademark of United Technologies), Alloy 718 equivalent alloy, and the like. The method for preparing the forging material is not particularly limited, and the forging material may be prepared through a conventionally known process. For example, a forging material can be prepared by subjecting an ingot produced using a melting method to hot forging and machining. The forging material is heated to a hot forging temperature corresponding to the material and is subjected to hot forging. The hot forging temperature is, for example, 850 to 1150 ° C. for a Ni-based super heat resistant alloy and 800 to 1100 ° C. for a Ti alloy. The heated forging material is placed on a lower die having a carved surface, and is reduced by the lower die and the upper die. At this time, a part of the forging material protrudes from the concave mold carved surface to form a flash. The “hot forging” here includes constant temperature forging and hot die.
鍛造製品の製造方法において、上述の実施形態に係る熱間鍛造用金型を用いることで、金型の維持・交換コストを抑え、量産性を高めることができる。着脱可能な補強部材を用いた構成は、型彫り面、引いてはそれに必要となる加圧力が大きくなればなるほどその効果が大きくなるため、例えば熱間鍛造の最大荷重が１００ＭＮ以上の場合に好適であり、３００ＭＮ以上の場合に特に好適である。熱間鍛造を繰り返して許容範囲を超える摩耗や損傷が生じた場合、補強部材を交換することで、さらに熱間鍛造を行うことができる。 In the method for producing a forged product, by using the hot forging die according to the above-described embodiment, the maintenance / replacement cost of the die can be suppressed and the mass productivity can be increased. The configuration using the detachable reinforcing member is effective when the maximum load of hot forging is 100 MN or more, for example, because the effect becomes greater as the pressing force required for the sculptured surface and pulling is increased. It is particularly suitable for 300 MN or more. When wear or damage exceeding the allowable range occurs after repeated hot forging, hot forging can be further performed by replacing the reinforcing member.
型彫り面の縁に沿って隣接配置された複数の補強部材片で補強部材が構成される場合の効果を確認するため、輪郭が図１と同様の型彫り面を備えた金型に対して以下の解析を行った。
型彫り面の輪郭の概寸は長手方向が１５００ｍｍ、短手方向が５００ｍｍである。長辺部分は分割配置された８個の補強部材片（ａ〜ｈ）で構成した。金型の本体部分は５００℃における引張強度が１０００ＭＰａである熱間金型用の合金工具鋼、補強部材片は５００℃における引張強度が１２３０ＭＰａであるＮｉ基超耐熱合金とし、各補強部材片の金型の本体部分への固定構造は図３に示す実施形態と同様にした。鍛造用素材としてＮｉ合金を用い、鍛造用素材の加熱温度を９５０℃、鍛造開始時の金型温度を４００℃として鍛造した場合の、各補強部材片のばり道を構成する部分での応力（最大主応力）を評価した（評価Ａ）。比較のために、補強部材片を用いない、すなわち型彫り面の輪郭の長辺部分も本体部分と一体である金型に対して、評価Ａと同様の条件で応力（最大主応力）を評価した（評価Ｂ）。評価結果を表１に示す。評価Ｂの応力は、評価Ａの補強部材片の位置に対応する位置での応力である。
In order to confirm the effect in the case where the reinforcing member is constituted by a plurality of reinforcing member pieces arranged adjacent to each other along the edge of the engraved surface, for a mold having an engraved surface similar in profile to FIG. The following analysis was performed.
The approximate size of the contour of the engraved surface is 1500 mm in the longitudinal direction and 500 mm in the lateral direction. The long side portion was composed of eight reinforcing member pieces (a to h) arranged in a divided manner. The main body of the mold is an alloy tool steel for a hot mold with a tensile strength at 500 ° C. of 1000 MPa, the reinforcing member piece is a Ni-based super heat-resistant alloy with a tensile strength at 500 ° C. of 1230 MPa, The structure for fixing the mold to the main body was the same as that of the embodiment shown in FIG. Stress at the portion constituting the beam path of each reinforcing member piece when forging material is forged using Ni alloy as the forging material, heating temperature of the forging material is 950 ° C., and mold temperature at the start of forging is 400 ° C. (Maximum principal stress) was evaluated (Evaluation A). For comparison, the stress (maximum principal stress) is evaluated under the same conditions as in Evaluation A for a mold that does not use a reinforcing member piece, that is, the long side of the contour of the die-cut surface is also integrated with the main body. (Evaluation B). The evaluation results are shown in Table 1. The stress of evaluation B is a stress at a position corresponding to the position of the reinforcing member piece of evaluation A.
表中の応力がマイナス数値であることは圧縮応力であることを示し、プラス数値であることは引張応力であることを示す。応力のかかり方が他の部分と異なる、角部（ａ、ｈ）での効果は明確ではないが、該角部を除く部分（ｂ〜ｇ）では、いずれの位置においても、型彫り面の縁の部分を複数の補強部材片に分割することで圧縮応力が低下することがわかった。すなわち、型彫り面の縁に着脱可能な補強部材を配置する場合に、複数の補強部材片で補強部材を構成することで、金型のよりいっそうの長寿命化が期待できることが明らかとなった。 A negative value in the table indicates a compressive stress, and a positive value indicates a tensile stress. The effect at the corners (a, h), where the stress is different from the other parts, is not clear, but in the parts (b to g) excluding the corners, at any position, It was found that the compressive stress is reduced by dividing the edge portion into a plurality of reinforcing member pieces. That is, when a detachable reinforcing member is disposed on the edge of the carved surface, it has been clarified that a longer life of the mold can be expected by configuring the reinforcing member with a plurality of reinforcing member pieces. .
１ 金型の本体部分
２ 型彫り面
３ 縁
４ 補強部材
５ ばり道
６ 傾斜部
７ 面
８ ばりだまり
９ ボルト
１０ 補強部材片
１１ 補強部材
１２ 型彫り面
１３ 本体部分
１４ 補強部材片
１５ 補強部材
１６ 型彫り面
１７ 本体部分
１００ 金型
２００ 金型
DESCRIPTION OF SYMBOLS 1 Main part of metal mold | die 2 Carved surface 3 Edge 4 Reinforcement member 5 Burr road 6 Inclined part 7 Surface 8 Burr pool 9 Bolt 10 Reinforcement member piece 11 Reinforcement member 12 Die-shaped surface 13 Mold surface 17 Main body part 100 Mold 200 Mold
Claims (6)
前記熱間鍛造用金型は、本体部分と、前記本体部分より熱間強度が高く、かつ着脱可能な補強部材と、を備え、
前記型彫り面の縁部分の少なくとも一部が前記補強部材で構成されている、熱間鍛造用金型。 A hot forging die having a concave mold carved surface,
The hot forging die includes a main body part, a hot member having a higher hot strength than the main body part, and a detachable reinforcing member.
A hot forging die, wherein at least a part of an edge portion of the die-carved surface is constituted by the reinforcing member.
前記輪郭の角の少なくとも一つに前記補強部材が配置された請求項１または２に記載の熱間鍛造用金型。 The contour of the engraved surface is rectangular,
The hot forging die according to claim 1 or 2, wherein the reinforcing member is disposed at at least one of the corners of the contour.
前記補強部材が、少なくとも前記長方形状の長辺側に配置された請求項１から３のいずれかに記載の熱間鍛造用金型。 The contour of the engraved surface is rectangular,
The hot forging die according to any one of claims 1 to 3, wherein the reinforcing member is disposed at least on the long side of the rectangular shape.
前記金型の本体部分は、前記凹凸に嵌合する凹凸を有し、
前記補強部材の凹凸が前記金型の本体部分の凹凸に嵌合することにより、前記補強部材が前記型彫り面の彫り込み方向で拘束される請求項１〜４のいずれか一項に記載の熱間鍛造用金型。 The reinforcing member has irregularities in a direction perpendicular to the engraving direction of the mold carved surface,
The main body portion of the mold has irregularities that fit into the irregularities,
The heat according to any one of claims 1 to 4, wherein the reinforcing member is constrained in the engraving direction of the carved surface by fitting the unevenness of the reinforcing member to the unevenness of the main body portion of the mold. Die for forging.
A method for producing a forged product, wherein the heated forging material is hot forged using the hot forging die according to any one of claims 1 to 5 to obtain a forged product.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212619U (en) * | 1975-07-15 | 1977-01-28 | ||
| US4187713A (en) * | 1977-04-09 | 1980-02-12 | Georg Fellner | Quick chucking die holder device for forging presses |
| JPH01113145A (en) * | 1987-10-22 | 1989-05-01 | Kobe Steel Ltd | Die for forging hot die |
| JPH04111938A (en) * | 1990-08-31 | 1992-04-13 | Daido Steel Co Ltd | Forging mold |
| JP2000343169A (en) * | 1999-06-02 | 2000-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Split die for thickness reduction press |
| JP2001047154A (en) * | 1999-08-04 | 2001-02-20 | Honda Motor Co Ltd | Resin mold |
| KR20140106109A (en) * | 2013-02-26 | 2014-09-03 | 조선대학교산학협력단 | Technology for the Manufacture of hot forming dies with high wear resistance using selective deposition of the superalloy |
| JP2014208379A (en) * | 2013-03-28 | 2014-11-06 | 日立金属株式会社 | Hot forging metal mold and hot forging method |
-
2017
- 2017-08-04 JP JP2017151498A patent/JP6924376B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212619U (en) * | 1975-07-15 | 1977-01-28 | ||
| US4187713A (en) * | 1977-04-09 | 1980-02-12 | Georg Fellner | Quick chucking die holder device for forging presses |
| JPH01113145A (en) * | 1987-10-22 | 1989-05-01 | Kobe Steel Ltd | Die for forging hot die |
| JPH04111938A (en) * | 1990-08-31 | 1992-04-13 | Daido Steel Co Ltd | Forging mold |
| JP2000343169A (en) * | 1999-06-02 | 2000-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Split die for thickness reduction press |
| JP2001047154A (en) * | 1999-08-04 | 2001-02-20 | Honda Motor Co Ltd | Resin mold |
| KR20140106109A (en) * | 2013-02-26 | 2014-09-03 | 조선대학교산학협력단 | Technology for the Manufacture of hot forming dies with high wear resistance using selective deposition of the superalloy |
| JP2014208379A (en) * | 2013-03-28 | 2014-11-06 | 日立金属株式会社 | Hot forging metal mold and hot forging method |
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