What is the problem of welding when the material is different from the wire?
This is a ahFirst, the parent material, copper, aluminum, carbon steel, stainless steel, cast iron, titanium,,,,,Besides welding material,,,,,,,,And then discuss the welding methodThen arrange them together.Can be welded, divided into categories.Not soldered, in one class.
1, in most cases, the material of sheet material and welding material is certainly not the same, there is no comparability.2 plates are usually made of flat rectangular building material boards of standard size, used as walls, ceilings, or floors. Also refers to the forging, rolling or casting of metal plates. It is divided into thin plate, middle plate, thick plate, thick plate, usually flat rectangular building material board.3, welding wire is used as filler metal or as a conductive wire welding material. In gas welding and gas tungsten arc welding, welding wire used as filler metal; in submerged arc welding, electroslag welding and MIG arc welding, welding wire as filler metal, and conductive electrode. The surface of the wire is not coated with anti oxidizing flux.
The welding consumables are most commonly used with gas protection welding material must be different. The content of silicon and manganese content inside the wire than the manganese content in the material are higher. The content of parathion in the wire is much lower than that of the parent metal. Here is the role of manganese in the welding arc, the chemical reaction of deoxidation in the weld pool, also guimeng into parent material but also can improve the strength of weld metal and plastic.The microstructure of weld metal is generally the widmanstatten structure, the microstructure and mechanical properties is very poor. The welded parent metal is usually a fibrous forging, and its mechanical properties are much better. But because of the weld metal melt into a certain amount of manganese, strength and plasticity are improved. Generally speaking, the mechanical properties of weld metal are much better than those of low carbon steel base metal.
