02 Dec,2023
Tip：Several welding methods are explained in detail
1, gas welding: the use of oxyacetylene or other gas flame heating base metal and filler metal, to achieve the purpose of welding. The flame temperature is about 3000℃. Suitable for thin workpieces, small diameter pipes, non-ferrous cast iron, brazing. 2, manual arc welding: The use of arc as a heat source to melt the welding rod and the base metal to form a weld manually operated welding method, the arc temperature is about 6000-8000℃. Suitable for ferrous metal and some non-ferrous metal welding, a wide range of applications, especially suitable for short weld, irregular weld. 3, submerged arc welding: (automatic, semi-braking) arc burning under the flux zone, the use of granular flux, as the covering layer of the metal pool, the air isolation so that it can not enter the pool. The welding wire is continuously fed into the arc area by the wire feeding mechanism, and the welding direction and moving speed of the arc are completed manually or mechanically. It is suitable for the welding of carbon steel, low alloy steel, stainless steel, copper and other straight welds and regular welds. 4, gas welding: (gas shielded welding) The use of shielding gas to protect the welding area arc welding. Protective gas acts as a protective layer of the metal pool to isolate the air. The gas used is inert gas, reducing gas, oxidizing gas, which is suitable for welding of carbon steel, alloy steel, copper, aluminum and other non-ferrous metals and their alloys. Oxidizing gas is suitable for the alloy of carbon steel and alloy steel. 5, ion arc welding: The use of gas in the arc after ionization, and then through the thermal contraction effect, mechanical contraction effect, magnetic contraction effect produced by an ultra-high temperature heat source for welding, the temperature can reach about 20000℃.
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