60Si2CrVA弹簧立定断裂分析
Analysis on Compressive Setting Fracture of 60Si2CrVA Spring
摘 要
通过宏观检验、化学成分分析、金相检验、硬度测试、断口及能谱分析等方法对弹簧强压立定时发生断裂的原因进行了分析.结果表明:弹簧近表面存在条带状偏析,且其上分布着数量较多的非金属夹杂物,在淬火时诱发内裂纹,导致弹簧在强压立定过程中发生断裂.
弹簧
强压断裂
偏析
非金属夹杂物
60Si2CrVA steel
spring
compressive setting fracture
segregation
non-metallic inclusion
Abstract
By methods of macroscopic inspection,chemical composition analysis,metallographic examination,hardness testing,fracture and spectrum analysis and so on,the cause of spring fracture during compressive setting was analyzed.The results show that the main reason of spring fracture was the segregation band existing in the near-surface and plenty of non-metallic inclusion on the segregation band.Inner crack was induced during quenching,and finally the spring fractured during the compressive setting.
中图分类号 TG142.41 DOI 10.11973/lhjy-wl201509016
所属栏目 质量控制与失效分析
基金项目
收稿日期 2014/10/22
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备注郑开宇(1984-),男,工程师,学士.
引用该论文: ZHENG Kai-yu,WU Xiao-liang. Analysis on Compressive Setting Fracture of 60Si2CrVA Spring[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2015, 51(9): 665～667
郑开宇,吴小良. 60Si2CrVA弹簧立定断裂分析[J]. 理化检验－物理分册, 2015, 51(9): 665～667
被引情况:
【1】郭全英,张国玉,孙晶, "卡盘T型块断裂原因分析",理化检验－物理分册 52, 332-334(2016)
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参考文献
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【2】李晓明,邵奎祥,孙丽坤.压缩弹簧断裂失效分析[J].金属热处理,2011(S1):425-427.
【3】苏连锋.55CrSi弹簧钢的带状偏析及其消除[J].浙江冶金,2009(3):36-38.
【4】刘宗昌.淬火开裂及防止方法[J].热处理,2010(3):72-79.
【5】王长庆,何全德,卢春芸,等.连铸坯横向裂纹和偏析带形成原因的分析[J].特殊钢,1994(4):45-47.
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