Resistance pressure welding method for materially connecting sheet metal parts flatly lying on each other and compressed between electrodes during welding, comprises developing heat need for welding by electrical resistor in welding zone

摘要

The resistance pressure welding method for materially connecting sheet metal parts (1, 2) flatly lying on each other and compressed between two electrodes (11, 12) during welding, comprises developing heat required for welding by an electrical resistor in a welding zone (15) during a current passage through the sheet metal parts, and influencing the environment of the welding zone to improve the properties of the weld connection. The environment temperature of the welding zone is influenced to improve the properties of the weld connection. The resistance pressure welding method for materially connecting sheet metal parts (1, 2) flatly lying on each other and compressed between two electrodes (11, 12) during welding, comprises developing heat required for welding by an electrical resistor in a welding zone (15) during a current passage through the sheet metal parts, and influencing the environment of the welding zone to improve the properties of the weld connection. The environment temperature of the welding zone is influenced to improve the properties of the weld connection. A cooling liquid is supplied to the environment of the welding zone for cooling and is a gaseous cooling medium. The environment of the welding zone is flowed with cooling liquid at the contact positions of the electrodes with the sheet metal parts. The cooling liquid is supplied by cooling liquid supply nozzles. The cooling liquid is supplied over the electrodes. The sheet metal parts are arranged with the welding zone and the electrodes for cooling in a cooling chamber, which contains the cooling liquid, and are immersed with the welding zone and the electrodes in an immersion tank with the cooling liquid for cooling. The sheet metal parts are welded in a welding point. An independent claim is included for a resistance pressure welding device.