内孔爆炸焊在双金属管及异形零件生产中有广泛用途.但内孔爆炸焊时,壳体要受几万至十几万大气压的强冲击波作用,容易变形和破坏.因此壳体保护是内孔爆炸焊的关键.迄今为止,国内外普遍采用刚性保护法或附加低熔点合金保护层,模具庞大、寿命短,往往炸几炮就坏了,它限制着内孔爆炸焊的推广应用. Borehole explosion welding is widely used in the production of bimetal tubes and special-shaped parts.But when the borehole explosion welding, the shell is subject to the strong shock waves of tens of thousands to tens of thousands of atmospheric pressure, so it is easy to deform and destroy, so the shell protection is So far, the rigid protection method or additional low-melting point alloy protective layer is widely used at home and abroad, the mold is large, the life span is short, the number of shots often broken is bad, which limits the popularization and application of the inner hole explosion welding.