Influence of the Parameter of Explosive Welding Caused by the Slope of Fly Plate at Static Load
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摘要: 爆炸焊接是利用炸药爆轰压力工作的固态焊接技术，广泛应用于制造层状金属复合材料。但对薄复板施焊安装过程中，薄板在自重及炸药重量作用下将发生弯曲。基于弹性力学薄板理论，得出了复板受均布载荷作用下产生的挠度及转角表达式；又通过分析爆炸焊接过程中的基、复板的运动参数，结合再入射流形成的声速限条件、流动限条件，推导出爆炸焊接时射流形成的预置角范围；最后将两者结合推导出在给定复板材料及长、宽的条件下，成功施焊所要求的复板最小厚度。Abstract: Explosive welding is a solid state fusion welding process in which the joining of two metals is accomplished by the application of the pressure released by the detonation of an explosive layer. It is widely used to manufacture material sandwich components. But when explosive was set on a thin fly plate, the deflection would take place because of the weight of explosive and the fly plate itself. In this paper, based on the analysis of the deflection of the big and thin plate which is supported by smooth cylindrical pin at four boundaries, the slope of the fly plate which endured uniform pressure of weight was developed. Combined with the explosive welding subsonic speed limit and fluid limit, the minimal thickness was calculated to make sure explosive welding can be successful. At last, the formula of the minimal thickness was gained in the conditions that the material, length, width of fly plate were all confirmed.
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Key words:
- explosive welding /
- deflection /
- slope /
- thickness
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