Roll welding repair is a kind of electric resistance welding, also called seam welding. During the welding process, the welding piece advances under the roller, and the current is connected in an intermittent manner, eventually forming a continuous weld. The welding consumable is assembled as a lap joint or a diagonal joint and placed between the two roller electrodes. The roller pressurizes the weldment and rotates to continuously or intermittently transmit electricity to form a continuous weld seam resistance welding method, which is called seam welding.
The roll welding repair process is widely used. In actual operation, it is necessary to properly control the process parameters. The first is the electrode pressure. The pressure exerted on the workpiece by the electrode is an important parameter affecting the quality of the weld. The second is to determine the appropriate welding rate and pulse frequency, a sealed seam welding seam, the stacking coefficient between the solder joints is preferably 30%.
In addition, the appropriate charging capacitor and voltage should be selected to meet the needs of soldering. In addition, it is necessary to grasp the state potential and size of the roller electrode surface. If the roller electrode surface size is unreasonable, it will affect the weld nugget formation size and penetration rate, and will also have a certain negative impact on the roll welding repair welding process. In the actual welding process, these parameters are mutually influential and need to be coordinated to obtain a good quality welded joint.http://www.crcplate.com/