The submerged arc Welding Rebuild On Roller is to use the surfacing welding wire as the electrode and the filling metal in the continuous feeding. When the Welding Rebuild On Roller is carried out, a layer of granular flux is covered on the surfacing area, and the arc is burned under the flux layer, and the welding is performed. The end of the wire and the local base material melt to form a weld. Under the action of arc heat, the upper part of the flux melts the slag and undergoes a metallurgical reaction with the liquid metal.
The slag floats on the surface of the molten metal pool, which can protect the weld metal, prevent air pollution, and produce physical and chemical reactions with the molten metal to improve the weld metal and performance. On the other hand, the weld metal can be made. Slowly licking.
Buried arc Welding Rebuild On Roller can use larger welding current. Compared with hand arc welding, its biggest advantage is good weld quality and high welding speed. Therefore, it is particularly suitable for welding straight seams of large workpieces. And most use mechanized welding. At present, submerged arc Welding Rebuild On Roller has been widely used in the welding of carbon steel, low alloy structural steel and stainless steel. Since slag can reduce the joint cooling rate, some high-strength structural steels, high-carbon steels, etc. can also be repaired by submerged arc surfacing.
However, it should be noted that the surfacing welding wire should be cleaned of rust, oil and other impurities before welding, such as strong impact welding parts need to be warmed and insulated; try to use short arc small current welding to avoid burning of alloying elements. In the case of multi-layer surfacing, the heat can be welded once, preferably in hot lime, and the wear resistance is unchanged, which can improve the impact resistance.http://www.crcplate.com/