Explanation

It is also called Peihua welding. It is a weld method that heats the joint of weldments to the melting state through local heating, so as to produce metallurgical fusion with each other, and firmly combines with each other after condensation. Generally, no pressure is applied during weld, and filler metal can be added or not. The key of fusion welding is to have a heating source with concentrated energy and high enough temperature, such as combustion flame as the heat source for gas welding and arc heat as the heat source for arc welding welding. In order to prevent the deterioration of performance caused by the contact between locally molten metal and air, air isolation protection measures such as various gas protection, melt flooding protection, vacuum protection, etc. are generally adopted during fusion welding. fusion welding is the most widely used weld method.

Classification