Welding control apparatus including a pressure regulating valve

Details Welding control apparatus including a pressure regulating valve Welding control apparatus including a pressure regulating valve

1987-03-03

1988-03-22

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 867, 2191171, B23K 1100

Patent

active

047330422

ABSTRACT:
A welding machine controller for controlling the welding operation of a welding machine controls welding force applied to a workpiece by directly controlling a pressure regulating valve which regulates the pressure of working fluid supplied to a power cylinder for applying a welding force to the workpiece. The welding machine controller further controls squeeze time, welding time, hold time, OFF time, cooling time and welding current. The welding force is regulated in a single step or in a plurality of steps during one welding cycle according to the quality and/or thickness of the workpiece.

REFERENCES:
patent: 4135076 (1979-01-01), Beneteau
patent: 4442337 (1984-04-01), Nakata et al.

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