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本文利用半圆柱方法,比较简捷地给出了爆炸焊接参数的边界条件,通过试验确定了铜—钢爆炸焊接窗口的具体范围和合理药量。标出了不同焊接参数的界面结合强度、面积结合率,波形尺寸和熔化面积等主要指标,进而用能量的观点,建立了反映不同飞板厚度的真实、紧凑的焊接窗口。提出了建立焊接窗口的新方法。在此焊接窗口内同时表示了焊接初始参数和动力学参数的关系。通过爆炸焊接过程的闪光X射线摄影,测得了飞板弯折角。其数值与半圆柱试验测得的飞板弯折角基本上相一致。由X光照片图象测得的炸药爆轰侧向飞散角φ,估算了2~#岩石硝铵炸药的绝热指数K,并把它引进计算飞板速度的公式内,修正了Gurney方程。同时还给出了由半圆柱试验,X射线摄影试验和修正的Gurney方程得到的飞板速度Vp曲线。试验结果和分析表明,半圆柱法可以作为预测合理焊接参数的工具。
In this paper, the boundary conditions of explosive welding parameters are given in a simple and straightforward way by semi-cylinder method. The specific range and reasonable dosage of the welding window of copper-steel explosive welding are determined through experiments. The key parameters such as interface bonding strength, area bonding ratio, waveform size and melting area of different welding parameters are marked out. From the energy point of view, a real and compact welding window reflecting the thickness of different flying plates is established. Proposed a new method of welding window. In this welding window at the same time that the welding initial parameters and kinetic parameters of the relationship. Flap angle was measured by flash X-ray photography during explosion welding. Its value is basically consistent with the bending angle of the flight plate measured by the semi-cylindrical test. The lateral scattering angle φ of explosives detonated by X-ray images was estimated, and the adiabatic exponent K of ammonium nitrate explosives 2 ~ # was estimated and introduced into the formula for calculating fly-plate velocity. The Gurney equation was modified. At the same time, the Vp curve of the flying speed obtained from the semi-cylindrical test, the X-ray photography test and the modified Gurney’s equation are also given. Experimental results and analysis show that the semi-cylinder method can be used as a tool to predict the proper welding parameters.