can prevent zhe Cracks becuse of the Crack And to improve the performance of the joints. Secondly, lets the Workpiece to be annealed at 300 ℃, 600 ℃, 900 ℃ .And to determined its hardness were and compared.
低碳钢与奥氏体不锈钢的焊接工艺 研究
学生：马维军 指导老师：陈文静
目录
目 录……………………………………………………………………………....1
摘要…………………………………………………………………………….…3
第一章 引 言……………………………………………………………………...5
1.1课题研究意义……………………………………………………………...5
3.6焊接层数………………………………………………………………...…....18
3.7焊接速度………………………………………………………………...…....19
3.8焊前准备………………………………………………………………….......20
3.9焊接操作…………………………………………………………………..….20
同时比对300摄氏度与600摄氏度的显微组织可以看到，奥氏体不锈钢有比较明显的晶界 腐蚀。而900摄氏度退火后基本没有出现晶界腐蚀的效果。说明，焊后900度以上对焊件 进行热处理可以提高焊件的质量【关键词】： 手工焊条电弧焊 不同工艺 预热 晶间 腐蚀
Digest
for the access technology of welding between The low carbon steel and austenitic stainless steel ,we used zhe SMAW to weld the two Materials.First. analyzed the welding of dissimilar metals .
