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Spray transfer GMAW. Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) and metal active gas (MAG) is a welding process in which an electric arc forms between a consumable MIG wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to fuse (melt and join).
This is a list of welding processes, separated into their respective categories.The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063). [1]
Qualification test of welders — Fusion welding, parts 1 to 5 ISO 9692-1: Welding and allied processes. Recommendations for joint preparation. Manual metal-arc welding, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steels ISO 9692-2: Welding and allied processes. Joint preparation. Submerged arc welding of steels ...
Welders at work, c. 1939. A welder is a person or equipment that fuses materials together.The term welder refers to the operator, the machine is referred to as the welding power supply.
Welders are also often exposed to dangerous gases and particulate matter. Processes like flux-cored arc welding and shielded metal arc welding produce smoke containing particles of various types of oxides. The size of the particles in question tends to influence the toxicity of the fumes, with smaller particles presenting a greater danger.
Fumes and gases, such as carbon dioxide, ozone, and fumes containing heavy metals, can be dangerous to welders lacking proper ventilation and training. [75] Exposure to manganese welding fumes, for example, even at low levels (<0.2 mg/m 3), may lead to neurological problems or to damage to the lungs, liver, kidneys, or central nervous system. [76]
In addition to welders and welding machine operators, there are also schemes to independently certify welding inspectors and related specialities. The duties of the welding inspector are described in ISO 14731; [12] however the requirement for inspector certification are not standardized, so there are differences in requirement between the various schemes.
Miller Electric is an American arc welding and cutting equipment manufacturing company based in Appleton, Wisconsin.Miller Electric, has grown from a one-man operation selling products in northeastern Wisconsin to what is today one of the world's largest manufacturers of arc welding and cutting equipment.