热加工工艺
熱加工工藝
열가공공예
HOT WORKING TECHNOLOGY
2009年
24期
164-166,102
,共4页
计算机模拟%淬火%开裂%控时淬火%力学性能
計算機模擬%淬火%開裂%控時淬火%力學性能
계산궤모의%쉬화%개렬%공시쉬화%역학성능
computer simulation%quenching%cracking%timed quenching%mechanical properties
为解决大尺寸合金钢件油淬后力学性能达不到要求、水淬易开裂的问题,介绍了一种以水和空气作为淬火介质的预冷循环控时淬火冷却方法.针对φ210 mm的42CrMo4钢轴类件.利用数值模拟方法设计淬火冷却工艺,并进行了实际件的淬火冷却试验.通过计算结果和实测数据的对比分析表明,采用预冷循环控时淬火冷却方法可以在避免淬火开裂的同时在一定范围内调整其力学性能.
為解決大呎吋閤金鋼件油淬後力學性能達不到要求、水淬易開裂的問題,介紹瞭一種以水和空氣作為淬火介質的預冷循環控時淬火冷卻方法.針對φ210 mm的42CrMo4鋼軸類件.利用數值模擬方法設計淬火冷卻工藝,併進行瞭實際件的淬火冷卻試驗.通過計算結果和實測數據的對比分析錶明,採用預冷循環控時淬火冷卻方法可以在避免淬火開裂的同時在一定範圍內調整其力學性能.
위해결대척촌합금강건유쉬후역학성능체불도요구、수쉬역개렬적문제,개소료일충이수화공기작위쉬화개질적예랭순배공시쉬화냉각방법.침대φ210 mm적42CrMo4강축류건.이용수치모의방법설계쉬화냉각공예,병진행료실제건적쉬화냉각시험.통과계산결과화실측수거적대비분석표명,채용예랭순배공시쉬화냉각방법가이재피면쉬화개렬적동시재일정범위내조정기역학성능.
For solving the problems that the mechanical properties of alloy steels are lower than requirement after quenched in oil and tempered and quenching cracks easily appeared after quenched in water, a method called alternately timed quenching (ATQ) which takes water and air in turn as the quenching media was proposed. During the quenching of 42CrMo4 steel shaft with a diameter 210 mm, ATQ processes were designed with the aid of computer simulation and then corresponding physical experiments were carried out consequently. The results show that the proposed technology can significantly reduce the surface cracking tendency and improve the mechanical properties.
