tungsten contact by the piece, a screw, solder under hydrogen nitrogen gas protection welding manufacturing.
1 the size of the tungsten contact according to the specifications, drawings supplied by the manufacturers or by the manufacturer and user agreed amount that the size and dimension accuracy requirement for manufacturing
2 tungsten contact appearance should be smooth, without defects, burr, rust, discoloration, and the phenomenon such as virtual welding; Plating without peeling, plating and the plating phenomenon.
3 uniform weld, without obvious phenomenon of "flow of copper. The appearance of the weld thickness is no more than a quarter of the tungsten sheet thickness.
4 tungsten contact interface roughness R, the maximum allowable values of 0.41 m. Contact of the contact surface must not have indentation or residual T
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