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JP2013119854A - Method of thermally treating high-pressure casting cylinder block - Google Patents

Method of thermally treating high-pressure casting cylinder block Download PDF

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JP2013119854A
JP2013119854A JP2012141095A JP2012141095A JP2013119854A JP 2013119854 A JP2013119854 A JP 2013119854A JP 2012141095 A JP2012141095 A JP 2012141095A JP 2012141095 A JP2012141095 A JP 2012141095A JP 2013119854 A JP2013119854 A JP 2013119854A
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cylinder block
temperature
heat treatment
solution
pressure casting
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Kyung Ho Min
庚 ホ 閔
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Hyundai Motor Co
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium

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  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
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Abstract

PROBLEM TO BE SOLVED: To provide a method of thermally treating a high-pressure casting cylinder block.SOLUTION: The method of thermally treating a high-pressure casting cylinder block includes a step of raising the cylinder block to a dissolving temperature, a step of dissolving the cylinder block over a set time period in a set temperature range after raising the temperature to the dissolving temperature, and a step of applying ageing treatment to the cylinder block after the dissolved cylinder block is quenched where the set temperature may be 440 to 460°C, and the set time period may be in a range of one hour to two hours.

Description

本発明は内燃機関用シリンダブロックの製造方法に係り、より詳しくは、高圧鋳造シリンダブロックの熱処理方法に関する。   The present invention relates to a method for manufacturing a cylinder block for an internal combustion engine, and more particularly to a heat treatment method for a high-pressure cast cylinder block.

自動車エンジン用シリンダブロックは、砂型鋳造法、重力鋳造法、低圧鋳造法、および高圧鋳造法などによって製造されている。砂型鋳造法としては、鋳鉄(cast iron)、アルミニウム合金素材のシリンダブロックを製造しており、使用圧力は重力と押湯によって調節しており、サイクルタイムが30〜60秒(sec)と極めて低い特性を有している。また、砂型鋳造法は、適用材質の影響がなく、アンダーカット成形が可能であるが、工程が複雑であって初期投資費用が多く必要となる短所がある。   A cylinder block for an automobile engine is manufactured by a sand casting method, a gravity casting method, a low pressure casting method, a high pressure casting method, or the like. As the sand mold casting method, cast iron and aluminum alloy material cylinder blocks are manufactured, the working pressure is adjusted by gravity and hot water, and the cycle time is extremely low, 30-60 seconds (sec). It has characteristics. In addition, the sand casting method is not affected by the applied material, and undercut molding is possible, but the process is complicated and requires a large initial investment cost.

重力鋳造法は、アルミニウム合金素材のシリンダブロック製造に用いられ、使用圧力は重力と押湯を利用している。低圧鋳造法は、アルミニウム合金素材のシリンダブロック製造に使用されており、使用圧力は0.15〜0.5barであり、サイクルタイムは600秒程度であるという特性を有している。重力鋳造法と低圧鋳造法は、鋳造品の内部品質が優れており、アンダーカット成形が可能であり、サイクルタイムが長いという特性を有しており、特に低圧鋳造の場合には回収率が高いという特性を有する。   The gravity casting method is used for manufacturing a cylinder block made of an aluminum alloy material, and the working pressure uses gravity and a feeder. The low pressure casting method is used for manufacturing a cylinder block made of an aluminum alloy material, and has a characteristic that a working pressure is 0.15 to 0.5 bar and a cycle time is about 600 seconds. The gravity casting method and the low pressure casting method have the characteristics that the internal quality of the cast product is excellent, undercut molding is possible, and the cycle time is long. Especially in the case of low pressure casting, the recovery rate is high. It has the characteristic.

高圧鋳造法は、アルミニウム、マグネシウム合金素材のシリンダブロック製造に応用されており、使用圧力は400〜1,000bar、サイクルタイムは50〜150秒であるという特性を有する。このような高圧鋳造法は、高い生産性、大量生産が可能、および素材重量を減少させることができるという長所があるが、内部の起泡形成によってガソリンエンジン出力を高める場合、これに対応したジャーナル部の強度確保において問題がある。   The high-pressure casting method is applied to the production of cylinder blocks made of aluminum and magnesium alloy materials, and has the characteristics that the working pressure is 400 to 1,000 bar and the cycle time is 50 to 150 seconds. Such a high-pressure casting method has the advantages of high productivity, mass production, and reduced material weight. However, when the gasoline engine output is increased by the formation of internal foam, the corresponding journal can be used. There is a problem in securing the strength of the part.

高圧鋳造法の高圧ダイカスト製品は、低圧鋳造法および重力鋳造法とは異なり、内部気孔のために溶体化工程を含む熱処理適用が不可能であるという短所がある。すなわち、高圧鋳造製品に無理に溶体化工程を含む熱処理を適用する場合、鋳造品内部の気孔が発砲するブリスタが発生するようになる。このような溶体化工程を含む熱処理を適用する場合、一般的なアルミニウム合金製品の強度を向上させることが可能であるため、ブリスタが発生しない溶体化温度および条件に対する研究が希求されている。   Unlike the low-pressure casting method and the gravity casting method, the high-pressure die casting product of the high-pressure casting method has a disadvantage that it is impossible to apply a heat treatment including a solution treatment process due to internal pores. That is, when forcibly applying a heat treatment including a solution treatment process to a high-pressure cast product, a blister is generated in which pores inside the cast product are fired. When heat treatment including such a solution treatment step is applied, it is possible to improve the strength of a general aluminum alloy product. Therefore, research on a solution temperature and conditions at which blisters are not generated is desired.

特開平09−25848号公報Japanese Patent Laid-Open No. 09-25848

本発明は上述の問題点を解決するためになされたものであって、本発明の目的は、高圧ダイカスト製品であるアルミニウム素材のシリンダブロックに対して最適な溶体化処理および時効処理条件を適用することにより、強度および耐久性能が向上したシリンダブロックの熱処理方法を提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to apply optimum solution treatment and aging treatment conditions to a cylinder block of an aluminum material which is a high-pressure die cast product. Accordingly, an object of the present invention is to provide a heat treatment method for a cylinder block with improved strength and durability.

上記目的を達成するための本発明による高圧鋳造シリンダブロックの熱処理方法は、シリンダブロックを溶体化温度まで昇温する段階と、設定温度範囲で設定時間に亘って前記シリンダブロックを溶体化処理する段階と、前記シリンダブロックを急冷させた後に時効処理する段階と、を含むことを特徴とする。このような、高圧鋳造シリンダブロックの熱処理方法において、前記高圧鋳造はダイカスト法であることが好ましく、また、前記溶体化温度までの昇温時間は1.5〜2時間であることが好適であり、さらに、前記シリンダブロックの急冷時の冷却温度は65℃〜90℃であることが好ましい。そして、前記シリンダブロックを急冷した後、温度範囲150℃〜200℃で2〜5時間に亘って時効処理することが好適であり、また、前記シリンダブロックの材質は、アルミニウム合金ADC10であることが好ましく、さらには、前記設定温度は440℃〜460℃の範囲に含まれ、前記設定時間は1乃至2時間の範囲に含まれることが好ましい。   In order to achieve the above object, a heat treatment method for a high-pressure cast cylinder block according to the present invention includes a step of raising the temperature of the cylinder block to a solution temperature, and a step of solution-treating the cylinder block for a set time within a set temperature range. And aging treatment after quenching the cylinder block. In such a heat treatment method for a high pressure casting cylinder block, the high pressure casting is preferably a die casting method, and a temperature raising time to the solution temperature is preferably 1.5 to 2 hours. Furthermore, it is preferable that the cooling temperature at the time of rapid cooling of the cylinder block is 65 ° C to 90 ° C. And after quenching the said cylinder block, it is suitable to carry out an aging treatment for 2 to 5 hours by the temperature range of 150 to 200 degreeC, and the material of the said cylinder block should be aluminum alloy ADC10. More preferably, the set temperature is included in a range of 440 ° C. to 460 ° C., and the set time is included in a range of 1 to 2 hours.

本発明に係る高圧鋳造シリンダブロックの熱処理方法によれば、熱処理されたシリンダブロックの強度増加および耐久性の向上により、内燃機関用シリンダブロックの軽量化が可能となる。また、この熱処理方法は、高圧鋳造によって製造されるシリンダブロックに拡大適用が可能となる。   According to the heat treatment method for a high pressure cast cylinder block according to the present invention, the weight of the cylinder block for the internal combustion engine can be reduced by increasing the strength and improving the durability of the heat treated cylinder block. Further, this heat treatment method can be extended to a cylinder block manufactured by high pressure casting.

本発明に係るシリンダブロックの熱処理方法の一例を示す工程図である。It is process drawing which shows an example of the heat processing method of the cylinder block which concerns on this invention. 本発明に係るシリンダブロックの溶体化処理および時効処理の熱処理工程の一例を示すグラフである。It is a graph which shows an example of the heat treatment process of the solution treatment of a cylinder block concerning this invention, and an aging treatment. 本発明によって熱処理されたシリンダブロックの時効処理による硬度(強度)変化を示すグラフである。It is a graph which shows the hardness (strength) change by the aging treatment of the cylinder block heat-processed by this invention.

以下、添付の図面を参照しながら、本発明の好ましい実施形態に係る高圧鋳造シリンダブロックの熱処理方法について説明する。本実施形態に係る高圧鋳造シリンダブロックの熱処理方法における工程は図1に示すように、高圧鋳造シリンダブロック又はシリンダブロック高圧鋳造用材を溶体化温度まで昇温する段階(S10)、設定温度範囲で設定時間に亘ってシリンダブロックを溶体化(熱)処理する段階(S20)、およびシリンダブロックを急冷させた後に時効処理する段階(S30)を含む。段階S10におけるシリンダブロックは、例えば、予め高圧鋳造し鋳型に収容されたシリンダブロック又はアルミニウム合金材(インゴット)のようなシリンダブロック高圧鋳造用材を用いることができる。ここで、予め高圧鋳造されたシリンダブロックは、例えばブリスタが発生したような好ましくないシリンダブロックを用いブリスタ発生のない良品に再生することもできる。なお、より強度および耐久性能が向上したシリンダブロックを製造できる場合がある点では、段階S10においてシリンダブロック高圧鋳造用材を用いることが好ましい。段階S20における設定温度は、後述するように、440℃以上が好ましく、445℃以上がより好ましい。また、段階S20における設定温度の上限は、470℃未満とすることが好ましく、460℃以下がより好ましく、455℃以下がさらに好ましい。なお、段階S20における設定時間は、設定温度との兼ね合いもあり特定し難いが、60分以上とすることが好ましく、70分以上がより好ましく、80分以上がさらに好ましい。設定時間の上限は、120分以下とすることが好ましく、110分以下がより好ましく、100分以下がさらに好ましい。   Hereinafter, a heat treatment method for a high-pressure cast cylinder block according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the steps in the heat treatment method for the high pressure casting cylinder block according to the present embodiment are set in a stage where the temperature of the high pressure casting cylinder block or the cylinder block high pressure casting material is raised to the solution temperature (S10) and within the set temperature range. It includes a step (S20) of solution-treating (heat) the cylinder block over time, and a step of aging treatment after quenching the cylinder block (S30). As the cylinder block in step S10, for example, a cylinder block that has been previously high-pressure cast and accommodated in a mold or a cylinder block high-pressure casting material such as an aluminum alloy material (ingot) can be used. Here, the cylinder block preliminarily cast at high pressure can be regenerated into a non-blister-free product using an unfavorable cylinder block in which, for example, a blister is generated. In addition, it is preferable to use a cylinder block high-pressure casting material in step S10 in that a cylinder block with improved strength and durability can be manufactured in some cases. As described later, the set temperature in step S20 is preferably 440 ° C. or higher, and more preferably 445 ° C. or higher. The upper limit of the set temperature in step S20 is preferably less than 470 ° C, more preferably 460 ° C or less, and further preferably 455 ° C or less. The set time in step S20 is difficult to specify due to the balance with the set temperature, but is preferably 60 minutes or more, more preferably 70 minutes or more, and even more preferably 80 minutes or more. The upper limit of the set time is preferably 120 minutes or less, more preferably 110 minutes or less, and even more preferably 100 minutes or less.

溶体化処理(solution heat treatment)は、鋳造された製品の微細組織内に生成された化合物(compound)や合金元素(alloying element)を基地(matrix)内に固溶させる工程である。溶体化温度は固溶が行われる範囲である440℃〜460℃に調節し、溶体化時間は処理時間が長いほど完全な固溶が行われるという長所があるが、長時間処理による費用増加および素材の物性を低下させるような過度の結晶粒成長(grain growth)を招く場合がある点では、1〜2時間維持することが好ましい。また、高圧鋳造はダイカスト法であることが好ましい。この場合、ダイカスト(die casting)時の圧力は400〜1,000barとすることができる。   The solution heat treatment is a process in which a compound or alloying element generated in a microstructure of a cast product is dissolved in a matrix. The solution temperature is adjusted to 440 ° C. to 460 ° C., which is the range in which solid solution is carried out, and the solution treatment time has the advantage that complete solid solution is carried out as the treatment time is increased. It is preferable to maintain for 1 to 2 hours in view of excessive grain growth that may deteriorate the physical properties of the material. The high pressure casting is preferably a die casting method. In this case, the pressure during die casting can be 400 to 1,000 bar.

本実施形態に係るシリンダブロックの熱処理方法における溶体化処理および時効処理を含む工程の概念的グラフを図2に示したように、高圧鋳造などによって鋳造された製品を常温から溶体化温度(T2)まで昇温させた後、一定時間を溶体化温度に維持した後に急冷させ、急冷した製品を時効温度(T1)まで加熱した後、一定時間を維持する時効処理(aging treatement)を行うこととなる。溶体化(solution heat treatement)温度までの昇温時間は、1.5〜2時間であることが好ましい。高圧鋳造によって製造されたシリンダブロックを溶体化温度まで加熱時間を1.5〜2時間に維持することにより、シリンダブロックの微細組織内に析出相が再溶解されるのに必要な時間を十分に確保することができる。シリンダブロックの急冷時の冷却温度は65℃〜90℃であることが好ましい。シリンダブロックを急冷させることにより、過冷によってシリンダブロックの内部微細組織上の固溶体(solid solution)が冷却された温度で安定な析出相を形成することを可能とする駆動力を確保することができる。   The conceptual graph of the process including the solution treatment and the aging treatment in the heat treatment method for the cylinder block according to the present embodiment is shown in FIG. 2, and the product cast by high-pressure casting or the like is heated from room temperature to the solution temperature (T2). After the temperature is raised to a temperature, the solution is rapidly cooled after being maintained at the solution temperature for a certain period of time, and after the rapidly cooled product is heated to the aging temperature (T1), an aging treatment for maintaining the certain time is performed. . The temperature raising time to the solution heat treatment temperature is preferably 1.5 to 2 hours. Maintaining the heating time of the cylinder block manufactured by high-pressure casting to the solution temperature to 1.5 to 2 hours provides sufficient time for the precipitated phase to be re-dissolved in the microstructure of the cylinder block. Can be secured. The cooling temperature during the rapid cooling of the cylinder block is preferably 65 ° C to 90 ° C. By rapidly cooling the cylinder block, it is possible to secure a driving force that enables a stable precipitation phase to be formed at a temperature at which the solid solution on the internal microstructure of the cylinder block is cooled by overcooling. .

シリンダブロックを急冷した後、温度範囲150℃〜200℃で2〜5時間に亘って時効処理することが好ましい。このような時効温度で時効時間が5時間を超過するときは、析出物の成長が粗大になって強度および伸び率の減少を招く場合があり、時効時間が2時間未満である場合には、核生成された析出相が極めて微細な大きさで存在するようになり、シリンダブロック素材の微細組織で転位(dislocation)移動を妨害するほどの障壁としての機能を果たせなくなり、強度増加の効果を期待し難い。上述の時効温度では、冷却によって冷却時の温度で安定した析出相(precipitates)が核生成(nucleation)されて成長するようになり、核生成の駆動力(driving force)は溶体化温度からの急冷による温度差によって発生する。   After quenching the cylinder block, it is preferable to perform an aging treatment at a temperature range of 150 ° C. to 200 ° C. for 2 to 5 hours. When the aging time exceeds 5 hours at such an aging temperature, the growth of precipitates may become coarse, resulting in a decrease in strength and elongation. When the aging time is less than 2 hours, The nucleated precipitate phase is present in a very fine size, and the microstructure of the cylinder block material can no longer function as a barrier that hinders dislocation movement, and is expected to increase strength. It is hard to do. At the aging temperature described above, stable precipitates (precipitates) at the cooling temperature are nucleated and grow by cooling, and the driving force of nucleation is rapidly cooled from the solution temperature. It is generated by the temperature difference.

生成された核(nucleates)が一定の大きさの析出相(precipitates)に成長するためには拡散変態(diffusional transformation)が伴うようになるが、拡散が起こるためには原子が固溶体(solid solution)乃至微細組織(microstructure)内で格子拡散を行えるように熱エネルギーが供給されなければならず、時効処理温度がこのような拡散の最適条件を提供することとなる。なお、シリンダブロックの材質は、JIS規格ADC10のアルミニウム合金(Al−Si−Cu系アルミニウム合金ダイカスト)であることが好ましい。   In order for the generated nucleates to grow to a certain size of precipitates, diffusion transformation is involved, but for diffusion to occur, the atoms are in a solid solution. Thermal energy must be supplied so that lattice diffusion can take place within the microstructure, and the aging temperature provides the optimum conditions for such diffusion. In addition, it is preferable that the material of a cylinder block is the aluminum alloy (Al-Si-Cu type aluminum alloy die-casting) of JIS specification ADC10.

以下、本発明に係る高圧鋳造シリンダブロックの熱処理方法について実施例を示して具体的に説明する。ただし、後述する実施例は本発明を例示するためのものに過ぎず、これによって限定されない。   Hereinafter, the heat treatment method for the high-pressure cast cylinder block according to the present invention will be specifically described with reference to examples. However, the examples described later are merely for illustrating the present invention and are not limited thereto.

上述した好ましい実施形態に準じて高圧ダイカスト(die−casting)法によって自動車用シリンダブロックを鋳造した。シリンダブロックの素材は、JIS規格ADC10のアルミニウム合金を用いた。ダイカスト法によって鋳造されたシリンダブロックを誘導加熱炉に装入した後、2時間で450℃まで加熱した。450℃まで加熱した後、同じ温度で2時間に亘って溶体化(熱)処理を行った。溶体化熱処理によってシリンダブロックを構成するアルミニウム合金の微細組織内部の析出相がアルミニウム合金基地内に均一に固溶された状態で存在するようになる。溶体化処理後にシリンダブロックを90℃温度まで急冷した。急冷したシリンダブロックを170℃まで加熱した後、5時間に亘って時効処理(aging treatment)を行った。170℃で5時間に亘って時効処理する間、アルミニウム合金基地(matrix)内で析出相の核が生成されて成長するようになる。時効処理が完了したシリンダブロックの微細組織を確認した結果、内部欠陥の発生は認められなかった。   In accordance with the above-described preferred embodiment, an automobile cylinder block was cast by a high-pressure die-casting method. As the material of the cylinder block, an aluminum alloy of JIS standard ADC10 was used. The cylinder block cast by the die casting method was charged into an induction heating furnace and then heated to 450 ° C. in 2 hours. After heating to 450 ° C., solution treatment (thermal) treatment was performed at the same temperature for 2 hours. The precipitation phase inside the microstructure of the aluminum alloy that constitutes the cylinder block is present in the aluminum alloy matrix in a solid solution state by solution heat treatment. After the solution treatment, the cylinder block was rapidly cooled to a temperature of 90 ° C. After the rapidly cooled cylinder block was heated to 170 ° C., an aging treatment was performed for 5 hours. During the aging treatment at 170 ° C. for 5 hours, nuclei of precipitated phases are generated and grow in the aluminum alloy matrix. As a result of confirming the microstructure of the cylinder block after the aging treatment, no internal defects were found.

Figure 2013119854
Figure 2013119854

本実施例に係るシリンダブロックの熱処理方法によって熱処理が完了したシリンダブロックの硬度を測定した結果を図3に示した。具体的には、溶体化温度450℃、維持時間を1.5hrで溶体化処理した後、時効温度170℃で時効処理(aging treatment)したシリンダブロックの試験結果である。図3のグラフによれば、時効時間を5時間にした場合、ブリネル硬さ(Brinell Hardness:HB)が115(kgf/mm)以上と顕著に増加したことが分かる。 FIG. 3 shows the result of measuring the hardness of the cylinder block that has been heat-treated by the cylinder block heat treatment method according to this example. Specifically, it is a test result of a cylinder block that has been subjected to a solution treatment at a solution temperature of 450 ° C. and a maintenance time of 1.5 hours, and then subjected to an aging treatment at an aging temperature of 170 ° C. According to the graph of FIG. 3, it can be seen that when the aging time is 5 hours, the Brinell hardness (HB) is significantly increased to 115 (kgf / mm 2 ) or more.

また、時効処理が完了したシリンダブロックから試片を抽出して引張試験を行った結果を表2に示した。   Table 2 shows the results of a tensile test conducted by extracting a specimen from the cylinder block after the aging treatment was completed.

Figure 2013119854
Figure 2013119854

表2に示す引張試験の結果、引張強度は、最大値については溶体化処理を行った試片の強度が熱処理しなかった試片に比べて59%増加し、最小値については20%増加し、引張強度平均値は32%増加した。上述したように、本実施例に係る熱処理方法により、シリンダブロックの強度を著しく増加させることによって耐久性能を向上させ、その結果、シリンダブロックの軽量化が可能となった。以上、添付の図面を参照しながら本発明の実施形態を説明したが、上述した実施形態はすべての面において例示的なものであり、これに限定されず、特許請求の範囲によって示した範囲内で、その均等概念から導き出されるすべての変更形態が本発明に包含される。   As a result of the tensile test shown in Table 2, as for the tensile strength, the strength of the specimen subjected to the solution treatment was increased by 59% for the maximum value and increased by 20% for the minimum value compared to the specimen not subjected to heat treatment. The average tensile strength increased by 32%. As described above, with the heat treatment method according to the present embodiment, the durability performance is improved by significantly increasing the strength of the cylinder block. As a result, the weight of the cylinder block can be reduced. The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the above-described embodiments are illustrative in all aspects and are not limited thereto, and are within the scope indicated by the claims. Thus, all modifications derived from the equivalent concept are included in the present invention.

Claims (7)

高圧鋳造シリンダブロックの熱処理方法であって、
シリンダブロックを溶体化温度まで昇温する段階と、
設定温度範囲で設定時間に亘って前記シリンダブロックを溶体化処理する段階と、
前記シリンダブロックを急冷させた後に時効処理する段階と、を含むことを特徴とする高圧鋳造シリンダブロックの熱処理方法。
A heat treatment method for a high pressure cast cylinder block,
Raising the temperature of the cylinder block to the solution temperature,
Solution-treating the cylinder block for a set time in a set temperature range;
Aging treatment after quenching the cylinder block, and a heat treatment method for the high pressure casting cylinder block.
前記高圧鋳造はダイカスト法であることを特徴とする請求項1に記載の高圧鋳造シリンダブロックの熱処理方法。   2. The heat treatment method for a high pressure casting cylinder block according to claim 1, wherein the high pressure casting is a die casting method. 前記溶体化温度までの昇温時間は1.5〜2時間であることを特徴とする請求項1又は2に記載の高圧鋳造シリンダブロックの熱処理方法。   The method for heat-treating a high-pressure cast cylinder block according to claim 1 or 2, wherein a temperature raising time to the solution temperature is 1.5 to 2 hours. 前記シリンダブロックの急冷時の冷却温度は65℃〜90℃であることを特徴とする請求項1乃至3のいずれかに記載の高圧鋳造シリンダブロックの熱処理方法。   The heat treatment method for a high-pressure cast cylinder block according to any one of claims 1 to 3, wherein a cooling temperature at the time of quenching the cylinder block is 65 ° C to 90 ° C. 前記シリンダブロックを急冷した後、温度範囲150℃〜200℃で2〜5時間に亘って時効処理することを特徴とする請求項1乃至4のいずれかに記載の高圧鋳造シリンダブロックの熱処理方法。   5. The heat treatment method for a high pressure cast cylinder block according to claim 1, wherein after the cylinder block is rapidly cooled, an aging treatment is performed at a temperature range of 150 ° C. to 200 ° C. for 2 to 5 hours. 前記シリンダブロックの材質は、アルミニウム合金ADC10であることを特徴とする請求項1乃至5のいずれかに記載の高圧鋳造シリンダブロックの熱処理方法。   6. The heat treatment method for a high-pressure cast cylinder block according to claim 1, wherein the material of the cylinder block is an aluminum alloy ADC10. 前記設定温度は440℃〜460℃の範囲に含まれ、前記設定時間は1乃至2時間の範囲に含まれることを特徴とする請求項1乃至6のいずれかに記載の高圧鋳造シリンダブロックの熱処理方法。   The heat treatment of a high pressure cast cylinder block according to any one of claims 1 to 6, wherein the set temperature is included in a range of 440 ° C to 460 ° C, and the set time is included in a range of 1 to 2 hours. Method.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1182154A (en) * 1997-09-12 1999-03-26 Yamaha Motor Co Ltd Aluminum alloy cylinder block and method of manufacturing the same
JP2008274403A (en) * 2007-03-30 2008-11-13 Toyota Central R&D Labs Inc Aluminum alloy for casting, aluminum alloy casting and method for producing the same
JP2011115830A (en) * 2009-12-04 2011-06-16 Suzuki Motor Corp Method and apparatus of manufacturing piston for internal combustion engine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194102A (en) * 1991-06-20 1993-03-16 Aluminum Company Of America Method for increasing the strength of aluminum alloy products through warm working
JPH1129843A (en) * 1997-07-09 1999-02-02 Hitachi Metals Ltd Heat treatment of aluminum die casting
JP2000239776A (en) * 1998-12-22 2000-09-05 Nippon Light Metal Co Ltd Die-cast cylinder block and method of manufacturing the same
JP4078845B2 (en) 2002-02-14 2008-04-23 マツダ株式会社 Post-processing method for castings
JP2004091818A (en) 2002-08-29 2004-03-25 Denso Corp High strength aluminum alloy casting and method for producing the same
BRPI0519400A2 (en) * 2004-12-23 2009-01-20 Commw Scient Ind Res Org heat treatment of aluminum alloy high pressure die castings
WO2008111559A1 (en) * 2007-03-15 2008-09-18 Honda Motor Co., Ltd. Hollow member, cylinder sleeve and methods for producing them
JP5169030B2 (en) 2007-06-08 2013-03-27 日産自動車株式会社 Quenching method and quenching apparatus
US8168015B2 (en) * 2008-10-23 2012-05-01 GM Global Technology Operations LLC Direct quench heat treatment for aluminum alloy castings
CN101435012A (en) * 2008-12-03 2009-05-20 苏州明志铸造有限公司 Heat treatment device and process for alloy casting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1182154A (en) * 1997-09-12 1999-03-26 Yamaha Motor Co Ltd Aluminum alloy cylinder block and method of manufacturing the same
JP2008274403A (en) * 2007-03-30 2008-11-13 Toyota Central R&D Labs Inc Aluminum alloy for casting, aluminum alloy casting and method for producing the same
JP2011115830A (en) * 2009-12-04 2011-06-16 Suzuki Motor Corp Method and apparatus of manufacturing piston for internal combustion engine

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