JP2003334790A - Knife for pelletizer - Google Patents
Knife for pelletizerInfo
- Publication number
- JP2003334790A JP2003334790A JP2002142143A JP2002142143A JP2003334790A JP 2003334790 A JP2003334790 A JP 2003334790A JP 2002142143 A JP2002142143 A JP 2002142143A JP 2002142143 A JP2002142143 A JP 2002142143A JP 2003334790 A JP2003334790 A JP 2003334790A
- Authority
- JP
- Japan
- Prior art keywords
- knife
- carbide
- general steel
- pelletizer
- die plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000010935 stainless steel Substances 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims description 24
- 239000000843 powder Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 abstract description 9
- 229920003023 plastic Polymers 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- 238000003466 welding Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 101710135934 50S ribosomal protein L36 Proteins 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プラスチックペレ
タイザの製造等に使用されるペレタイザ用のナイフに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knife for a pelletizer used for manufacturing a plastic pelletizer.
【０００２】[0002]
【従来の技術】プラスチック造粒装置の構造例を、図２
〜図４に示すように、溶融プラスチックはダイプレート
１のノズル１６から押出され、ダイプレート１に対向し
て取付けられ、駆動装置８により回転されているナイフ
により切断されてペレット化される。運転中、ナイフは
常にダイプレート１の硬化表面である樹脂吐出面３に接
し、あるいは一定圧力で押付けられており、ナイフの摺
動面は時間経過とともに摩耗する。2. Description of the Related Art An example of the structure of a plastic granulator is shown in FIG.
As shown in FIG. 4, the molten plastic is extruded from the nozzle 16 of the die plate 1, is attached so as to face the die plate 1, and is cut into pellets by a knife rotated by the drive device 8. During operation, the knife is always in contact with the resin discharge surface 3 that is the hardened surface of the die plate 1 or is pressed with a constant pressure, and the sliding surface of the knife wears over time.
【０００３】ゆえに、従来のペレタイザ用のナイフは、
ナイフ摺動面の摩耗を防ぐ目的で、ナイフそのものの材
質を工具網（ＳＫＨ１０）あるいはＴｉＣ含有焼結合金
としたものを採用している。また、従来のペレタイザ用
のナイフには、ナイフの全体をセラミック製としたもの
もある（例えば、実公平５ー１８０９６号公報、特開昭
５９−８３６０６号公報、実開昭６３−２１００８号公
報）。しかし、工具鋼、ＴｉＣ含有焼結合金、セラミッ
ク等の一体ナイフは、材質そのものが靭性が乏しいた
め、運転中に折損する等のトラブルがときに起こること
があった。Therefore, the conventional pelletizer knife is
In order to prevent wear of the sliding surface of the knife, the material of the knife itself is a tool net (SKH10) or a sintered alloy containing TiC. Some conventional pelletizer knives are made of ceramic (for example, Japanese Utility Model Publication No. 5-18096, Japanese Unexamined Patent Publication No. 59-83606, Japanese Utility Model Publication No. 63-21008). ). However, the integral knife of tool steel, TiC-containing sintered alloy, ceramics, etc. has a poor toughness in its material itself, and therefore sometimes a trouble such as breakage occurs during operation.
【０００４】そこで、この欠点を補う目的で、図７又は
図８に示すように、ナイフの母材５３をステンレス鋼等
の一般鋼とし、刃先部５４をＴｉＣ含有焼結合金とし、
刃先部５４のＴｉＣ含有焼結合金をナイフの母材５３に
ロー付したものが使用されるようになってきている。し
かし、その接合方法がロー付である為、接合面の強度が
十分でない。あるいはロー付部内部にブローホールが発
生することでさらに接合強度が低下し、運転中に剥がれ
ることがある。さらに、これらナイフは、刃先部５４の
摺動面５５全体がいずれも硬質材料である為、折損ある
いは、剥がれトラブル以外に刃先部５４の摺動面５５の
周囲が欠損することもある。Therefore, for the purpose of compensating for this drawback, as shown in FIG. 7 or 8, the knife base material 53 is general steel such as stainless steel, and the cutting edge portion 54 is TiC-containing sintered alloy.
The TiC-containing sintered alloy of the blade tip portion 54 brazed to the base material 53 of the knife has come to be used. However, since the joining method is brazing, the strength of the joining surface is not sufficient. Alternatively, the occurrence of blowholes inside the brazed portion further lowers the bonding strength and may cause peeling during operation. Further, in these knives, since the entire sliding surface 55 of the cutting edge portion 54 is made of a hard material, the periphery of the sliding surface 55 of the cutting edge portion 54 may be damaged in addition to breakage or peeling trouble.
【０００５】また、従来のペレタイザ用のナイフには、
ＳＵＳ４４０Ｃ等のナイフ母材の外表面をＴｉＮ等の高
硬度コーティング層をＣＶＤ法等で被覆し、刃先の欠
け、バリ発生による切れ味低下を防ぐようにしたものが
ある（例えば特開２０００−１７６９３２号公報）。し
かし、この場合、高硬度コーティング層は１０μｍ以下
の薄い層である。ゆえにシリカ（ＳｉＣ）、酸化チタン
（ＴｉＯ2）等をコンパウンディングしたプラスチック
をペレット化するケースでは、切断されたペレットがナ
イフのすくい面をすべるので、短期間で薄い層が摩耗し
てしまい、効果がなくなってしまう。In addition, a conventional pelletizer knife has
There is one in which the outer surface of a knife base material such as SUS440C is coated with a high-hardness coating layer such as TiN by a CVD method or the like to prevent the cutting edge from being deteriorated due to chipping of a cutting edge or burrs (for example, Japanese Patent Laid-Open No. 2000-176932). Gazette). However, in this case, the high hardness coating layer is a thin layer having a thickness of 10 μm or less. Therefore, in the case of pelletizing plastic compounded with silica (SiC), titanium oxide (TiO 2 ), etc., the cut pellets slide on the rake face of the knife, and the thin layer wears in a short period of time. Disappears.
【０００６】さらにダイプレートと接触する部分は、母
材のＳＵＳ４４０Ｃが支配的であるため、ＴｉＣ含有焼
結合金等と比べると、耐摩耗性に劣るという問題があ
る。Further, since the base material SUS440C is predominant in the portion in contact with the die plate, there is a problem that it is inferior in wear resistance as compared with a TiC-containing sintered alloy or the like.
【０００７】[0007]
【発明が解決しようとする課題】本発明は上記問題点に
鑑み、耐摩耗性に優れナイフそのものの折損、刃先部の
欠損が起こりにくく、しかも硬質物を含んだプラスチッ
クのペレット化する場合であっても、ナイフのすくい面
が摩耗しにくいペレタイザ用のナイフを提供することを
目的とする。SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a case of pelletizing a plastic containing a hard material, which is excellent in abrasion resistance and is unlikely to break the knife itself or the cutting edge. Even so, it is an object to provide a knife for a pelletizer in which the rake face of the knife is less likely to wear.
【０００８】[0008]
【課題を解決するための手段】この技術的課題を解決す
る本発明の技術的手段は、ペレタイザ用のナイフにおい
て、ナイフの母材２５は靭性のあるステンレス鋼等の一
般鋼とされ、刃先１９、すくい面２３の刃先１９側及び
ダイプレート１と接触する摺動面２１の刃先１９側は、
ＴｉＣ、ＮｂＣ、ＷＣ、ＣｒＣ等の硬質の炭化物が含ま
れる金属とされ、ダイプレート１と接する摺動面２１の
逃し面２２側は、一般鋼とされ又は一般鋼と炭化物を含
んだ金属とのブレンド層とされている点にある。The technical means of the present invention for solving this technical problem is that in a knife for a pelletizer, the base material 25 of the knife is a general steel such as a tough stainless steel, and the cutting edge 19 , The cutting edge 19 side of the rake face 23 and the cutting edge 19 side of the sliding surface 21 that comes into contact with the die plate 1,
A metal containing hard carbide such as TiC, NbC, WC, CrC, etc., and the relief surface 22 side of the sliding surface 21 in contact with the die plate 1 is made of general steel or a metal containing general steel and carbide. It is said to be a blend layer.
【０００９】本発明の他の技術的手段は、前記炭化物を
含んだ金属を形成する手段として、炭化物を含んだ金属
パウダー２７を溶接により母材２５の一般鋼に肉盛して
いる点にある。Another technical means of the present invention is that, as a means for forming the metal containing the carbide, a metal powder 27 containing the carbide is welded to the general steel of the base material 25 to overlay it. .
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づき説明する。図３は本発明が適用されるペレタイ
ザの構造図を示し、図３において、１はダイプレート、
２はダイホルダ、３はダイプレート１の樹脂吐出面であ
る。６はカッター軸で、保持筒体７に軸心廻りに回転自
在に保持され、カッター軸６はモータ等の駆動装置８に
よって軸心廻りに回転駆動されるようになっている。９
は水室で、水入口１０と水出口１１とを有し、内部に水
が満たされるように構成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a structural diagram of a pelletizer to which the present invention is applied. In FIG. 3, 1 is a die plate,
Reference numeral 2 is a die holder, and 3 is a resin ejection surface of the die plate 1. Reference numeral 6 denotes a cutter shaft, which is rotatably held around a shaft center by a holding cylinder 7, and the cutter shaft 6 is rotationally driven around the shaft center by a driving device 8 such as a motor. 9
Is a water chamber having a water inlet 10 and a water outlet 11, and is configured to be filled with water.
【００１１】１３はナイフホルダで、中央部がボルト等
の締結具によりカッター軸６に締め付け固定されてい
る。図４に示すように、ナイフホルダ１３の外周部に
は、複数のペレタイザ用のナイフ１５が外方突出状に取
り付けられている。駆動装置８により、カッター軸６を
回転駆動すると、カッター軸６と共にナイフホルダ１３
がカッター軸６の軸心廻りに回転し、複数のペレタイザ
用のナイフ１５は、運転中、常にダイプレート１の硬化
表面である樹脂吐出面３に接し、或いは一定圧力で押付
けられており、図２に示すダイプレート１のノズル１６
から押出された溶融プラスチックはナイフ１５で切断さ
れてペレット化される。Reference numeral 13 denotes a knife holder, the central portion of which is fastened and fixed to the cutter shaft 6 by a fastener such as a bolt. As shown in FIG. 4, a plurality of palletizer knives 15 are attached to the outer peripheral portion of the knife holder 13 so as to project outward. When the cutter shaft 6 is rotationally driven by the drive device 8, the knife holder 13 together with the cutter shaft 6 is driven.
Rotates about the axis of the cutter shaft 6, and the plurality of pelletizer knives 15 are always in contact with the resin discharge surface 3 which is the cured surface of the die plate 1 or pressed with a constant pressure during operation. Nozzle 16 of die plate 1 shown in FIG.
The molten plastic extruded from is cut with a knife 15 and pelletized.
【００１２】図１、図２及び図４において、ペレタイザ
用のナイフ１５は、その取付部１７がナイフホルダ１３
の外周部にボルト等の締結具により締め付け固定され、
ナイフ１５の切断部１８がナイフホルダ１３から外方突
出されている。ペレタイザ用のナイフ１５は、ナイフ１
５の切断部１８の刃先１９側に、ダイプレート１に接す
る摺動面２１と、逃し面２２と、すくい面２３とを有し
ている。ナイフ１５の母材２５は、靭性のあるステンレ
ス鋼等の一般鋼Ａで形成され、ナイフ１５の刃先１９，
すくい面２３の刃先１９側及び摺動面２１の刃先１９側
は、ＴｉＣ、ＮｂＣ、ＷＣ、ＣｒＣ等硬質の炭化物が含
まれる金属（炭化物含有金属）Ｂにより形成され、摺動
面２１の逃し面２２側は、一般鋼Ａで形成され又は一般
鋼Ａと炭化物を含んだ金属Ｂとのブレンド層（希釈層）
Ｃで形成されている。In FIGS. 1, 2 and 4, a knife 15 for a pelletizer has a mounting portion 17 for a knife holder 13.
It is fastened and fixed to the outer peripheral part by fasteners such as bolts,
The cutting portion 18 of the knife 15 projects outward from the knife holder 13. The knife 15 for the pelletizer is the knife 1.
On the blade edge 19 side of the cutting portion 18 of No. 5, there is a sliding surface 21 in contact with the die plate 1, a relief surface 22, and a rake surface 23. The base material 25 of the knife 15 is formed of general steel A such as tough stainless steel, and has a cutting edge 19 of the knife 15.
The cutting edge 19 side of the rake face 23 and the cutting edge 19 side of the sliding face 21 are formed of a metal (carbide-containing metal) B containing hard carbide such as TiC, NbC, WC, CrC, and the flank face of the sliding face 21. The 22 side is a blend layer (dilution layer) formed of general steel A or of general steel A and metal B containing carbide.
It is made of C.
【００１３】前記炭化物を含んだ金属Ｂを形成する手段
として、後述するように、炭化物を含んだ金属パウダー
２７を溶接により母材である一般鋼Ａに肉盛する方法が
採用されている。図５は、炭化物含有金属Ｂを溶接肉盛
する前の、ナイフ１５の母材となる一般鋼Ａの形状を示
す。母材となる一般鋼Ａの材質は、水中ホットカットに
使用することもあるため、靭性、高強度を考慮にＳＵＳ
４２０Ｊ２、ＳＵＳ６３０等が適切である。As a means for forming the metal B containing the carbide, a method of overlaying the metal powder 27 containing the carbide on the general steel A as a base material by welding is adopted as described later. FIG. 5 shows the shape of the general steel A that is the base material of the knife 15 before the welding-up of the carbide-containing metal B. The material of general steel A, which is the base material, is sometimes used for underwater hot cutting.
420J2, SUS630, etc. are suitable.
【００１４】母材２５にあらかじめ、加工されたＶ字状
溝２９のナイフ刃先に相当する面Ｄの全域にＴｉＣ、Ｎ
ｂＣ、ＷＣ、ＣｒＣ等の硬質の炭化物を含んだ金属Ｂ
を、図６に示す如く溶接で肉盛る。このようにして、炭
化物含有金属Ｂを溶接肉盛した材料を、その後、図６に
２点鎖線で示す如く、ナイフ１５の形状に加工する。前
記図１は、このようにして製作されたナイフ１５の刃先
１９側の拡大図を示している。なお、炭化物を含んだ金
属パウダー溶接には、ＰＴＡ（プラズマトランスファー
アーク）溶接が一般的によく用いられる。TiC, N is formed on the entire area of the surface D corresponding to the knife edge of the V-shaped groove 29 that has been machined in advance in the base material 25.
Metal B containing hard carbide such as bC, WC, CrC
Is welded up as shown in FIG. In this way, the material obtained by welding the carbide-containing metal B by welding is processed into the shape of the knife 15 as shown by the chain double-dashed line in FIG. FIG. 1 shows an enlarged view of the knife 15 thus manufactured on the side of the cutting edge 19. In addition, PTA (plasma transfer arc) welding is generally often used for metal powder welding containing carbide.
【００１５】以上のように、溶接法で硬質の炭化物含有
金属Ｂを肉盛する場合、金属そのものの、ナイフ１５の
母材２５との親和性さえ考慮しておけばよく、炭化物の
組成を選ばない。又、炭化物の含有量も任意に選べる。
ゆえに、ナイフ１５が接触する相手側ダイプレート１表
面の硬化面３も傷めず、かつ、ナイフ１５自身の摩耗も
少なくする最適の炭化物、含有量を選定することができ
る。上記実施の形態によれば、ナイフ１５の母材２５
が、靭性のあるステンレス鋼等の一般鋼Ａで形成されて
いるので、ナイフ１５にかかる曲げによる折損は生じに
くい。As described above, when overlaying the hard carbide-containing metal B by the welding method, it is sufficient to consider the affinity of the metal itself with the base material 25 of the knife 15, and the composition of the carbide is selected. Absent. Further, the content of the carbide can be arbitrarily selected.
Therefore, it is possible to select an optimum carbide content that does not damage the hardened surface 3 of the mating die plate 1 surface with which the knife 15 comes into contact and also reduces the wear of the knife 15 itself. According to the above embodiment, the base material 25 of the knife 15
However, since it is formed of general steel A such as tough stainless steel, breakage due to bending of the knife 15 is unlikely to occur.
【００１６】刃先１９、ダイプレート１と接触する摺動
面２１の刃先１９側は、炭化物を含んだ硬質金属Ｂであ
るゆえ、耐摩耗性が優れている。すくい面２３の刃先１
９側も硬質金属Ｂであるため、シリカ、酸化チタン等を
含んだコンパウンドプラスチックのペレット化に使用し
ても、耐摩耗性に優れる。ナイフ１５の摺動面２１の逃
し面２２側は、一般鋼Ａあるいは、一般鋼Ａと硬質の炭
化物含有金属Ｂとのブレンド層Ｃで形成されるため、セ
ラミック、ＴｉＣ含有焼結金属で刃先が形成されたナイ
フより刃先部の靭性が高まり、刃先１９の欠損が起こり
にくくなる。The sliding surface 21 in contact with the cutting edge 19 and the die plate 1 is hard metal B containing carbide on the side of the cutting edge 19 and therefore has excellent wear resistance. Cutting edge 1 of rake face 23
Since the 9 side is also made of hard metal B, it has excellent wear resistance even when used for pelletizing compound plastics containing silica, titanium oxide and the like. Since the relief surface 22 side of the sliding surface 21 of the knife 15 is formed of the general steel A or the blend layer C of the general steel A and the hard carbide-containing metal B, the cutting edge is made of ceramic or TiC-containing sintered metal. The toughness of the blade tip is higher than that of the formed knife, and the blade tip 19 is less likely to be damaged.
【００１７】また、溶接で炭化物を含んだ金属Ｂを一般
鋼Ａに融合する為、ロー付と比べ、はるかに信頼性の高
い接合ができる。溶接の際、炭化物を含んだ金属パウダ
ー２７を高温で溶接しながら、母材２５の一般鋼Ａに肉
盛していくが、この時母材２５側も一部溶融するので、
おのずと接合部近傍には硬質金属Ｂと母材金属Ａとのブ
レンド層Ｃが形成され靭性のある刃先１９が形成され
る。硬質金属Ｂの溶接の際、一定箇所の溶接時間を長く
すれば、ブレンド層Ｃが厚くできる等、ある程度、ブレ
ンド層Ｃの厚さをコントロールすることができる。炭化
物を含んだ金属パウダー２７を溶接するので、耐摩耗性
にもっとも適した炭化物の選定、その含有率が自由に設
定できる。Further, since the metal B containing carbide is fused to the general steel A by welding, a much more reliable joining can be achieved as compared with brazing. At the time of welding, the metal powder 27 containing carbide is welded at a high temperature while being built up on the general steel A of the base material 25. At this time, the base material 25 side is partially melted,
A blend layer C of the hard metal B and the base metal A is naturally formed in the vicinity of the joint portion, and the blade tip 19 having toughness is formed. When the hard metal B is welded, if the welding time at a certain position is lengthened, the blend layer C can be thickened and the thickness of the blend layer C can be controlled to some extent. Since the metal powder 27 containing carbide is welded, the carbide most suitable for wear resistance can be selected and its content can be freely set.
【００１８】[0018]
【発明の効果】本発明によれば、耐摩耗性に優れナイフ
１５そのものの折損、刃先部の欠損が起こりにくくな
る。しかも、硬質物を含んだプラスチックのペレット化
する場合であっても、ナイフ１５のすくい面２３が摩耗
しにくくなる。According to the present invention, the knife 15 itself is excellent in abrasion resistance, and it is less likely that the knife 15 itself will be broken or the cutting edge will be damaged. Moreover, even when the plastic containing the hard material is pelletized, the rake face 23 of the knife 15 is less likely to be worn.
【図１】本発明の一実施形態を示すナイフの刃先側の拡
大断面図である。FIG. 1 is an enlarged cross-sectional view of a knife edge side showing an embodiment of the present invention.
【図２】同ナイフダイプレート部分の斜視図である。FIG. 2 is a perspective view of the knife die plate portion.
【図３】同ペレタイザの構造を示す側面断面図である。FIG. 3 is a side sectional view showing the structure of the pelletizer.
【図４】同ナイフ及びナイフホルダ部分の背面図であ
る。FIG. 4 is a rear view of the knife and knife holder portion.
【図５】同ナイフの製造工程を示す斜視図である。FIG. 5 is a perspective view showing a manufacturing process of the knife.
【図６】同ナイフの製造工程を示す側面図である。FIG. 6 is a side view showing a manufacturing process of the knife.
【図７】従来例を示すナイフの側面図である。FIG. 7 is a side view of a knife showing a conventional example.
【図８】他の従来例を示すナイフの側面図である。FIG. 8 is a side view of a knife showing another conventional example.
１ ダイプレート １５ ナイフ １９ 刃先 ２１ 摺動面 ２２ 逃し面 ２３ すくい面 ２５ 母材 ２７ 金属パウダー 1 die plate 15 knives 19 cutting edge 21 Sliding surface 22 Relief surface 23 rake face 25 base metal 27 Metal powder
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤村 英樹 兵庫県高砂市荒井町新浜２丁目３番１号 株式会社神戸製鋼所高砂製作所内 (72)発明者 小林 隆一 兵庫県高砂市荒井町新浜２丁目３番１号 株式会社神戸製鋼所高砂製作所内 (72)発明者 立田 修 兵庫県高砂市荒井町新浜２丁目３番１号 株式会社神戸製鋼所高砂製作所内 (72)発明者 永見 信樹 兵庫県高砂市荒井町新浜２丁目３番１号 株式会社神戸製鋼所高砂製作所内 Ｆターム(参考） 4F201 AJ02 AJ14 BA02 BC02 BC12 BC15 BD05 BL09 BL38 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hideki Fujimura 2-3-3 Niihama, Arai-cho, Takasago, Hyogo Prefecture Takasago Works, Kobe Steel, Ltd. (72) Inventor Ryuichi Kobayashi 2-3-3 Niihama, Arai-cho, Takasago, Hyogo Prefecture Takasago Works, Kobe Steel, Ltd. (72) Inventor Osamu Tachida 2-3-3 Niihama, Arai-cho, Takasago, Hyogo Prefecture Takasago Works, Kobe Steel, Ltd. (72) Inventor Nobuki Nagami 2-3-3 Niihama, Arai-cho, Takasago, Hyogo Prefecture Takasago Works, Kobe Steel, Ltd. F-term (reference) 4F201 AJ02 AJ14 BA02 BC02 BC12 BC15 BD05 BL09 BL38
Claims (2)
般鋼とされ、刃先（１９）、すくい面（２３）の刃先
（１９）側及びダイプレート（１）と接触する摺動面
（２１）の刃先（１９）側は、ＴｉＣ、ＮｂＣ、ＷＣ、
ＣｒＣ等の硬質の炭化物が含まれる金属とされ、ダイプ
レート（１）と接する摺動面（２１）の逃し面（２２）
側は、一般鋼とされ又は一般鋼と炭化物を含んだ金属と
のブレンド層とされていることを特徴とするペレタイザ
用のナイフ。1. In a knife for a pelletizer, a base material (25) of the knife is a general steel such as a tough stainless steel, and a cutting edge (19), a cutting edge (19) side of a rake face (23) and a die plate. The blade surface (19) side of the sliding surface (21) that comes into contact with (1) has TiC, NbC, WC,
A relief surface (22) of the sliding surface (21) that is made of a metal containing hard carbide such as CrC and is in contact with the die plate (1).
A knife for a pelletizer, characterized in that the side is made of general steel or a blended layer of general steel and a metal containing carbide.
として、炭化物を含んだ金属パウダー（２７）を溶接に
より母材（２５）の一般鋼に肉盛していることを特徴と
する請求項１に記載のペレタイザ用のナイフ。2. A metal powder (27) containing a carbide is welded to the general steel of the base material (25) as a means for forming the metal containing a carbide. The knife for pelletizer according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002142143A JP4216526B2 (en) | 2002-05-16 | 2002-05-16 | Pelletizer knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002142143A JP4216526B2 (en) | 2002-05-16 | 2002-05-16 | Pelletizer knife |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003334790A true JP2003334790A (en) | 2003-11-25 |
| JP4216526B2 JP4216526B2 (en) | 2009-01-28 |
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ID=29702536
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002142143A Expired - Lifetime JP4216526B2 (en) | 2002-05-16 | 2002-05-16 | Pelletizer knife |
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| Country | Link |
|---|---|
| JP (1) | JP4216526B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387747C (en) * | 2006-08-21 | 2008-05-14 | 苏州利德纺织机件有限公司 | Pelletizing movable knife material and preparation method thereof |
| DE102013103664A1 (en) * | 2013-04-11 | 2014-10-16 | Reduction Engineering Gmbh | Granulating device for plastics |
| WO2018129934A1 (en) * | 2017-01-10 | 2018-07-19 | 昆明胤泰逻辑科技有限公司 | Low resistance slicing machine blade |
| CN109113621A (en) * | 2018-11-01 | 2019-01-01 | 黄淮学院 | A kind of modularization junk mill and preparation method thereof |
-
2002
- 2002-05-16 JP JP2002142143A patent/JP4216526B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387747C (en) * | 2006-08-21 | 2008-05-14 | 苏州利德纺织机件有限公司 | Pelletizing movable knife material and preparation method thereof |
| DE102013103664A1 (en) * | 2013-04-11 | 2014-10-16 | Reduction Engineering Gmbh | Granulating device for plastics |
| DE102013103664B4 (en) * | 2013-04-11 | 2016-09-01 | Reduction Engineering Gmbh | Granulating device for plastics |
| WO2018129934A1 (en) * | 2017-01-10 | 2018-07-19 | 昆明胤泰逻辑科技有限公司 | Low resistance slicing machine blade |
| CN109113621A (en) * | 2018-11-01 | 2019-01-01 | 黄淮学院 | A kind of modularization junk mill and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4216526B2 (en) | 2009-01-28 |
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