论文部分内容阅读
我厂电容式压力传感器生产中,一个急需解决的问题是电容室及电容室与壳体的焊接。由于焊件材质为1Cr18Ni 9Ti、4J29,焊件热容量比较大,加上电容室内烧结有刚性绝缘玻璃,玻璃上镀有金属层作为电容极板,以及电容室小间加有预张力的中心敏感膜片(0.05mm),故要求焊缝气密性好(10-~8乇以下)、热影响小、应力变化不大、熔深保证、焊缝平滑光亮等。我们曾采用氩弧焊,但氩弧焊是开放电弧,弧柱发放角大(45°左右)、能量
Our factory capacitance pressure sensor production, an urgent need to solve the problem is the capacitance chamber and capacitor chamber and shell welding. As the weldment material is 1Cr18Ni 9Ti, 4J29, weldment heat capacity is relatively large, plus the capacitor indoor sintered rigid insulating glass, the glass is plated with a metal layer as a capacitor plate, and the capacitor room between the pre-tensioned central sensitive membrane (0.05mm), it is required to weld airtight (10 - 8 Torr or less), small thermal effects, small changes in stress, penetration guarantee smooth and shiny weld. We have used argon arc welding, but argon arc welding is an open arc, arc release angle (45 ° or so), energy