本文就小块钛板拼焊成大规格钛板并进行爆炸复合时焊缝破裂问题进行了初步探讨。焊缝破裂与否,取决于爆轰波的传播方向与拼接焊缝布局间的关系。为避免焊缝破裂,提出了钛板拼焊的改进措施及选择的爆炸复合工艺。 In this paper, a small piece of titanium welded into a large size titanium plate and explosive composite weld rupture problems were discussed. Weld fracture or not, depends on the detonation wave propagation direction and the relationship between the layout of the spliced ​​weld. In order to avoid the rupture of the welding seam, the improvement measures of the titanium welding and the explosion compounding technology are proposed.