摘要
针对铜合金在钢板上堆焊时易出现铜渗透裂纹的问题 ,采用等离子喷焊 ,将不同Ni含量的CuNi合金堆焊到 16Mn钢板上进行渗透裂纹形成原因的研究。研究表明 ,焊接规范参数越大 ,热输入量越大 ,熔合比越大 ,产生渗透裂纹深度越深。渗透裂纹的产生与应力状态及大小、堆焊材料化学成份以及基体温度等有关。只要合理控制焊接工艺规范 ,可以避免或减少 16Mn钢板上堆焊铜合金时产生渗透裂纹。
In view of occurrence of copper contamination cracking for Cu-Ni alloy hardfacing on 16 Mn steel plate, plasma-arc power hardfacing technology was employed, which made Cu-Ni alloys with different composition deposited on 16 Mn steel, to analyze the cause of copper contamination cracking during hardfacing. The results show that the crack depth increases with the increase of heat input during welding, and the occurrence of copper contamination cracking is associated with the state and value of stress, composition of deposited materials and temperature of base metal. It is found that the copper contamination cracking can be avoided by controlling welding parameters.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2005年第1期40-43,共4页
Transactions of Materials and Heat Treatment
关键词
渗透裂纹
铜合金
堆焊
Cracks
Hard facing
Nickel alloys
Plasma spraying
Steel sheet
