Research of Secondary Dendrite Arm Spacing and Cylinder Head Crack Based on Simulation Technology

Jia Zhengfeng; Zeng Qingqiang; Liu Bin; Hu Tiegang; Zhan Zhangsong

doi:10.15980/j.tzzz.2013.12.006

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Research of Secondary Dendrite Arm Spacing and Cylinder Head Crack Based on Simulation Technology
Vol. 33, Issue 12, Pages: 1111-1114(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.12.006

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[1]贾正锋,曾庆强,刘斌,胡铁刚,詹樟松.缸盖裂纹及二次枝晶间距的仿真技术[J].特种铸造及有色合金,2013,33(12):1111-1114.

Jia Zhengfeng, Zeng Qingqiang, Liu Bin, et al. Research of Secondary Dendrite Arm Spacing and Cylinder Head Crack Based on Simulation Technology. [J]. Special Casting & Nonferrous Alloys 33(12):1111-1114(2013)
[1]贾正锋,曾庆强,刘斌,胡铁刚,詹樟松.缸盖裂纹及二次枝晶间距的仿真技术[J].特种铸造及有色合金,2013,33(12):1111-1114. DOI： 10.15980/j.tzzz.2013.12.006.

Jia Zhengfeng, Zeng Qingqiang, Liu Bin, et al. Research of Secondary Dendrite Arm Spacing and Cylinder Head Crack Based on Simulation Technology. [J]. Special Casting & Nonferrous Alloys 33(12):1111-1114(2013) DOI： 10.15980/j.tzzz.2013.12.006.

摘要

充分利用CAE分析技术

对缸盖进行疲劳强度、材料蠕变强度、铸造分析

考察工作应力、材料寿命、铸造缺陷对裂纹的影响

并综合考虑热处理、原材料成分、变质处理对裂纹的影响

为缸盖裂纹问题解决及后续缸盖开发中预防裂纹提供参考。重点分析了二次枝晶间距（DAS2）与凝固冷却速度、力学性能的定量关系

着重研究了DAS2的仿真实现方式

并与测试数据进行了对比。结果表明

仿真结果与测试数据有较好的一致性。

Abstract

With the help of CAE technology

through analyzing fatigue strength and creep strength of materials and casting process

effects of working stress

material service life and casting defects on the crack in the cylinder head crack were investigated.Meanwhile

effects of heat treatment

raw materials composition and modification treatment on the crack were analyzed

which provided a reference to eliminate and prevent crack in the cylinder head.The quantitative relationship between secondary dendrite arm spacing（DAS2）and solidification cooling rate with mechanical properties of the cylinder head was described.DAS2 can be achieved quickly by CAE and verified accurately by tested data.The simulated results are well agreement with the experimental ones