Welding of large-scale racks is a process of manufacturing racks by welding squares, iron parts and other components. Welding is a manufacturing process that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. What are the welding methods for frame welding?

Fusion welding is a method in which the workpiece interface is heated to a molten state during the welding process, and the welding is completed without pressure. During fusion welding, the heat source rapidly heats and melts the interface of the two workpieces to be welded to form a molten pool. The molten pool moves forward with the heat source, and after cooling, a continuous weld is formed to connect the two workpieces into one.

 

Pressure welding is to achieve atomic bonding between two workpieces in a solid state under pressure, also known as solid state welding. The commonly used pressure welding process is resistance butt welding. When the current passes through the connecting end of the two workpieces, the temperature of the place rises due to the large resistance. When heated to a plastic state, the connection becomes one under the action of axial pressure.

 

Brazing is to use a metal material with a lower melting point than the workpiece as the solder, heat the workpiece and the solder to a temperature higher than the melting point of the solder and lower than the melting point of the workpiece, and use the liquid solder to wet the workpiece, fill the interface gap, and realize the connection with the workpiece. The interdiffusion of atoms to achieve the method of welding.

The welding technologies commonly used in the welding of large-scale racks include arc welding, argon arc welding, CO2 shielded welding, oxygen-acetylene welding, laser welding, electroslag pressure welding, etc. It is required to select the appropriate welding method, so as to better meet the customer's needs.