B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/102
B23K 11/24 (2006.01) B23K 11/25 (2006.01)
Patent
CA 1178343
WELDING CONTROL WITH AUTOMATIC PERCENT HEAT ADJUSTMENT Abstract of the Disclosure This welding control method and apparatus automatically adjusts the percent heat of a welding machine in response to the duration of the preceding welds. The duration of each weld is measured by counting the line cycles. The line cycle count is compared with a percent heat increase condition and with a percent heat decrease condition of a preselected percent heat algorithm. The percent heat is incremented in response to the percent heat increase condition being met and the percent heat is decremented in response to the percent heat decrease condition being met. The control detects the weld resistance at the peak of each line cycle and compares the detected resistance with a resistance condition of a preselected resistance algorithm. The weld is terminated in response to the resistance condition being met and the cycle count being between a low limit count and a high limit count. The percent heat increase condition occurs at a predetermined number of successive welds terminating at the high limit count and the percent heat decrease condition occurs at a predetermined number of successive welds terminating at the low limit count.
391156
Macrae & Co.
Midland-Ross Corporation
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