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Method of flash-butt welding

  • US 6,294,752 B1
  • Filed: 01/20/2000
  • Issued: 09/25/2001
  • Est. Priority Date: 12/16/1999
  • Status: Expired due to Fees
First Claim
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1. A method of flash-butt welding in which the travel speed (Vt) of the machine mobile plate and the welding voltage (U2) are changed and the travel speed is controlled through negative feedback by welding current, characterized in that the voltage is changed discretely for each flashing fixed interval of tm duration as a function of the increment of the actual average speed of flashing details of shortening (Va) during the previous flashing interval, Va value being maintained at the preset level, lower than Vt.

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