摘要
用 SEM等方法对电冰箱压缩机用磷脱氧无缝铜管异常断裂进行了分析。结果表明 ,夹杂物局部偏聚是铜管断裂的内在原因 ,焊接时产生的热应力及弯曲变形是铜管断裂的外部诱发因素。有效的改进措施是严格控制杂质含量、将高温焊接工艺改为低温焊接工艺。
Unusual cracking of seamless phosphorus killed copper pipe used in refrigeration are analyzed by means of SEM etc. The results show that the aggregation of inclusions is the internal cause of copper pipe cracking while the thermal stress formed during welding and bending deformation are another two important factors. The effective methods to avoid the cracking include lowering strictly the content of impurity and adopting low temperature welding process.
出处
《理化检验（物理分册）》
CAS
2000年第8期368-370,共3页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
磷脱氧铜
无缝管
断裂
夹杂
焊接
电冰箱
Phosphorus killed copper Seamless pipe Crack Inclusion Thermal stress Bending deformation
