工具钢/Q235复合板爆炸焊接试验及性能研究

分析了工具钢／Q235碳钢复合板在爆炸焊接中易产生裂纹以及四个周边不焊接的原因。通过对复合板结合界面波大小及其抗剪强度分布规律的测试和研究，发现炸药爆速、界面波以及抗剪强度三者之间存在着一定关联，并指出近似于直接结合（也可称细波结合）的界面不仅结合强度满足要求，而且焊炸加载也较小，是最为理想的结合。在试验及分析的基础上对36块0．5－1．5m^2的T10／Q235成品复合板进行爆炸焊接，其焊合率大于98％且无裂纹，抗剪强度及抗弯曲性能均满足使用要求。

Explosive Welding Test and Performance Study on Composite Sheet of Tool-Steel with Q235 Carbon-Steel

The reasons of crack phenomenon and bad welding effect at four edges are analyzed,which tend to appear in the explosive welding of tool steel and Q235 carbon steel forming composite sheet.It's found that there are some connections among explosive speed,interface wave and shear intensity through test and study of the size and intensity distribution law of the composite sheet bonding interface,and also point out that not only the interface approximate to direct bonding(fine wave bonding) has enough bonding intensity,but also its explosive load is smaller than others,and therfore,it is the most desirable bonding.On the basis of tests and analyses,we have produced 36 pieces of composite sheets of T10 tool steel bonded with Q235 carbon steel whose sizes ranged from 0.5 m 2 to 1.5 m 2 by explosive welding tchnology.The bonding rate of welding beyond 98% and the performance of antibend and shear intensity are all satisfied for the sheets.