大幅板爆炸焊接界面质量的板幅尺寸效应研究

摘要：由于爆炸焊接工艺过程的特殊性，大幅板爆炸焊接中存在的结合面焊接缺陷问题产生的原因一直未能得到明确揭示，本文利用非线性动力数值模拟，考察了3.5m~7.0m钛钢大幅板爆炸焊接质量问题产生的原因，发现大幅板爆炸焊接过程中复板存在褶皱变形现象，指出褶皱变形的出现与所用板幅尺寸比例密切相关，随着板幅尺寸比例的变化，褶皱变形持续时间、影响范围置以及最大褶皱深度存在规律性变化。

INFLUENCE OF THE PLATE SIZE ON THE EXPLOSIVE WELDING QUALITY OF LARGE-SIZED PLATE

Because of the particularity and complexity of explosive welding,little is known about the explosive welding defects in the large-sized plates.In this paper,the defect mechanism in the Ti/Steel plates sized from 3.5m to 7.0m is studied by the dynamic nonlinear numerical simulation.Based on careful observations on the morphological changes of the flyer plate at different time,the folding deformation is found during the process of explosive welding.The calculation results show that the occurrence of the folding deformation is closely related to the size of the plates,and the plate size influences strongly the duration,the position and the maximum spatial depth of folding deformation.