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基于数值模拟的718塑料模具钢大模块淬火新工艺设计 被引量:23

Design of New Quenching Technology for 718 Plastic Die Steel Based on Numerical Simulation
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摘要 通过对新型 718塑料模具钢大模块淬火过程进行计算机数值模拟 ,结合金相组织与硬度测试制订了一种淬火的新工艺 ,即高温 930℃完全奥氏体化后直接空冷。该工艺能使整个模块均获得贝氏体组织 ,保证模块硬度在 2 9~ 35 HRC的范围内 ,而且同一截面硬度差值小于 3HRC。此外 ,淬火冷却过程中表面与心部的温差较小 ,明显减小了淬火裂纹产生的可能性。 In order to optimize the quenching technology o f the new plastic die steel 718, the numerical simulation on quenching process was carried out Combined with observation of metallographic microstructure and har dness testing, a new quenching technology-completely austenitizing at 930 ℃ an d directly cooling to room temperature in the air, was successfully designed for this kind of steel The technology can ensure that the bainite can be obtained all over the whole large module after quenching, and the hardness is in the rang e of 29-35HRC with the biggest difference less than 3HRC in the same section I n addition, the possibility of cracking is greatly reduced due to the smaller te mperature difference between the surface and the center during the process of qu enching
出处 《钢铁》 CAS CSCD 北大核心 2004年第9期64-68,共5页 Iron and Steel
关键词 塑料模具钢 数值模拟 淬火 贝氏体 plastic die steel, numerical simulation, quenchi ng, bainite
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  • 1Fernandes F M B, Denis S, Simon A.Mathematical Model Coupling Phase Transformation and Temperature Evolution during Quenching of Steels.Material Science and Technology, 1985,1(10): 838-844.
  • 2Denis S, Egautier, Simon A,et al..Stress-phase Transformation Interactions Basic Principles, Modeling and Calculation of Internal Stresses.Materials Science and Technology, 1985,1(10): 805-815.
  • 3Denis S, Sjostrom S, Simon A.Coupled Temperature, Stress, Phase-transformation Calculation Model Numerical Illustration of Internal Stress Evolution during Cooling of a Eutectoid Carbon Steel Cylinder.Metall Trans, 1987,18A(7): 1203~1211.
  • 4陈千.预硬化718塑料模具钢试制[J].四川冶金,2000,22(1):27-31. 被引量:3
  • 5刘宗昌,高占勇,马党参,孙久红.718塑料模具钢的组织和预硬化处理[J].特殊钢,2002,23(2):43-45. 被引量:11

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