汽车发动机连杆的热处理工艺设计
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—汽车发动机连杆的热处理工艺设计
目录
摘要---------------------------------------------------------------------------------------------------(1)1.概述--------------------------------------------------------------------------------------------(2)1.1 前言-----------------------------------------------------------------------------------------------(2)1.2 使用性能-----------------------------------------------------------------------------------------(2)
1.3 失效形式---------------------------------------------------------------------------------------(2)
1.4 材料选择---------------------------------------------------------------------------------------(2)
1.4.1技术要求-----------------------------------------------------------------------------------(2)
1.4.2材料比较------------------------------------------------------------------------------------(3)
1.5热处理工艺及目的----------------------------------------------------------------------- ----(4)
1.5.1退火--------------------------------------------------------------------------------------------(4)
1.5.2正火-------------------------------------------------------------------------------------------(4)
1.5.3淬火----------------------------------------------------------------------------------------- (4)
1.5.4回火--------------------------------------------------------------------------------------------(5)
2.热处理工艺-------------------------------------------------------------------------------------(5)
2.1工艺路线------------------------------------------------------------------------------------- -(5)
2.1.1 等温退火---------------------------------------------------------------------------------(5)
2.1.2淬火----------------------------------------------------------------------------------------(5)
2.1.3回火-----------------------------------------------------------------------------------------(6)
3.实验结果及分析---------------------------------------------------------------------6)
3.1 组织及分析----------------------------------------------------------------------------------(6)
3.1.1原始组织----------------------------------------------------------------------------------- (6)
3.1.2 等温退火后组织---------------------------------------------------------------------------(7)
3.1.3淬火后组织----------------------------------------------------------------------------------(7)
3.1.4 回火后组织---------------------------------------------------------------------------------(8)
3.2 缺陷分析------------------------------------------------------------------------(8)
3.2.1过热-----------------------------------------------------------------------------------------(8)
3.2.2欠热-----------------------------------------------------------------------------------------(8)
3.2.3淬火裂纹-----------------------------------------------------------------------------------(8)
3.2.4脱碳组织-----------------------------------------------------------------------------------(8)
3.2.5热处理变形--------------------------------------------------------------------------------(9)
3.2.6软点-----------------------------------------------------------------------------------------(9)
3.2.7回火缺陷-----------------------------------------------------------------------------------(9)
4 . 总结--------------------------------------------------------------------------------(10)
5. 参考文献-------------------------------------------------------------------------(10)
6.致谢----------------------------------------------------------------------------------(10)