TH2001004581A - Spot type resistance welding method and welding assembly method - Google Patents

Abstract

A summary of the invention which will appear on the ad page ReadFile:DEPCT64The spot resistance welding method includes:Test Welding Operations;and Actual Welding After Test Welds,where Test Welds are performed. It is performed under each of two or more welding conditions in this test weld. For each of these weld conditions, the electrode force parameter from when the electrode is applied to the part is to be obtained. Welds are reached when a given electrode force is reached before starting through the current and time-vary curves of the instantaneous amount of heat generating and cumulative amount of heat generating are provided. Keep in real welding: The application of the electrode force to the part to be welded is treated under each condition the same as in the test welding before the start of the current, the electrode force parameter. The corresponding values and parameters stored in the test weld are compared for each weld condition to determine the target time variation curves of the heat generating moment and the cumulative amount of heat generated in the weld. real test; and Adaptive control welding operation to control the amount of current through the target ------------------------------------ -------------------------

Claims (1)

1. Claim (Section One) which will appear on the advertisement page: DEPCT64 1. A spot type resistance welding method in which the parts to be welded are squeezed by a pair of electrodes. The parts to be welded are a number of overlapping metal plates and The passage of current while applying force to the electrode to join the parts to be welded. The resistance spot welding method includes: test welding operations; and actual welding operations after welding. test, whereby the test weld is performed under