Flash-butt resistance welding process

Details Flash-butt resistance welding process Flash-butt resistance welding process

B - Operations, Transporting

23

K

327/59

B23K 11/04 (2006.01)

Patent

CA 1263715

FLASH-BUTT RESISTANCE WELDING PROCESS ABSTRACT The process comprises a flashing of parts being welded and their upsetting. The flashing is conducted with con- current measurement of a useful electric power and an elect- ric parameter of the flashing process which is linked with the power by an extreme dependence. Then the value and sign of the power and parameter increments are determined within one and the same period of time. The parts are brought clo- ser together up to the moment when the ratio of the power and parameter increments reverses its sign. Then the parts begin to be separated up to the moment when the value of said ratio reaches the preset value selected to suit the welding circuit resistance and the cross sectional area of the welded parts.

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