METHOD FOR AUTOMATIC CONTROL OF UP-SET PRESSURE IN WELDING PROCESS BY FLASH BUTT WELDER

摘要

The present invention relates to a backup set of flash butt welder pressure control method for welding between the front end of the end portion and the trailing coil the strip after the preceding coil strip to flash butt welding process according to the equipment for continuously tongpan process a steel strip, in particular welding by controlling welding to occur it is calculated by applying automatically by an appropriate set-up pressure values, depending on the steel grade and the thickness of the target plate to a control method that can be improved and productivity of the welding quality.; The present invention includes the steps of selecting the phase and, representative plate head thickness which receives the data for the sheet thickness and steel types set data table according to the type of steel in order to calculate a backup set pressure necessary for welding between the steel strip by the flash butt welder and a type steel here, fair-up set of steps, and a valve stand 30, the potentiometer 31 on the basis of the calculated up set pressure value to calculate a titration up a set pressure by regression analysis of the pressure amplifier to the thickness 32-1 flash butt welder set-up of pressure in accordance with the appropriate pressure value that is controlled through a step, and a pressure control unit for controlling the pressure in the thickness and the type of steel of the steel sheet characterized in that it comprises the step of displaying a digital value It provides a control method.