Research on pressure testing and parameter optimization of underwater explosion welding

MENG Xiangtian; ZHOU Xiaohong; ZHOU Dapeng

doi:10.3969/j.issn.1674-3970.2025.01.002

Abstract：To explore the pressure between cladding plate and base plate during underwater explosion welding,measuring impact pressure curve and peak pressure can provide an important basis for the adjustment of underwater explosion welding parameters and the study of underwater shock wave.In this study,an explosion welding experimental device is designed which can measure pressure and adjust parameters such as explosive thickness,overlying water layer thickness and plate to plate spacing.The experimental device is used to measure the pressure during explosion welding,and the obtained data are explored.The experiment indicates that it is reasonable to place the pressure sensor in the middle of the base plate,and a complete pressure curve can be obtained.When the thickness of overlying water layer and explosive are the same,the closer the distance between explosive and cladding plate,the higher the peak pressure.When the explosive thickness is the same to the plate-to-plate spacing,the thinner the overlying water layer,the higher the pressure on the upper surface of the base plate.The sensor is capable of measuring the greatest pressure on the upper surface of the base plate,when the plate to plate spacing is 60 mm,80 mm,and above,with the measurement process lasting 6～10 μs.The research findings are of significant importance for the improvement and optimization of the explosion welding process.