To the especially structure and material welding performance of a spaceflight igniter, the key welding problem is the spatter and strike fire phenomenon which is brought by high contact resistance.

• 摘要针对特殊结构和材料的焊接性能，指出目前的焊接问题主要是存在飞溅和接触电阻过大而带来的“打火”现象。