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爆炸压接机理
当压接管外表面包覆的炸药爆轰后,所产生的高温、高压的爆轰产物急剧膨胀,对压接管进行猛烈冲击。在冲击作用下压接管产生冲击波。随着冲击波的向前传播,压接管金属受到强烈压缩而产生径向运动,并以高速逐层碰撞压合铝线直到钢芯。碰撞、压合的压力可高达4000 principle 5000MPa,而金属的动屈服极限一般在 l000MPa,故使受压金属产生塑性形变,使接头由松动状态变为紧密结合、强度和电气性能符合使用要求的一个整体。在爆炸压接的焊区内,结合部位的两种金属组织没有发生熔化焊接现象
expl.
principle of explosive jointing
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