IF roll welding machine
Roll welding, also known as girth welding, is a method in which a pair of roller electrodes is used instead of cylindrical electrodes for spot welding. Welded workpieces are moved between the rollers to produce sealed welds that overlap each other and weld the workpiece . Generally, AC pulse current or amplitude modulation current is used, and three (single) phase rectification, intermediate frequency and high frequency DC current can also be used. Guangdong roll welding machine is widely used for welding thin plates of sealed containers in oil drums, cans, radiators, aircraft and automobile fuel tanks, rockets, and missiles. Generally, the welding thickness is within 3mm of the veneer.
The adjustable stroke cylinder is used to pressurize to avoid collision damage of the upper and lower electrodes. It is driven by three-phase stepless speed regulating electrode, which is convenient and stable for welding speed adjustment. Ingenious and reasonable internal structure, reducing the welding performance caused by heat reduction, weakening the silver conductive bearing's excellent conductive contact. Minimize the loss of power conversion.
The seam of roll welding consists of a welding point, which is divided into roll spot welding or airtight seam welding according to the core melting overlap. The formation process of each solder joint consists of three stages: pressure, heating, melting, and cooling crystallization, as with spot welding, but it is quite different from spot welding. Because of the unavoidable shunt phenomenon, the distribution of the current and heat fields in the welding zone has its own characteristics; and the rollers that transfer pressure and are heated to rotate continuously change the welding position, so that the distribution of the current and heat fields and the melting zone crystallize The characteristics are related to the speed of changing positions.