Repair method of soldering part and device thereof

Abstract

The invention discloses a repairing method of welding component, which is according to that: the defect district zone achieved by welding line air tightness test uses non-smelting inert gases to protecting arc welding to welding line to proceed the second time heating smelting, uses the second time solidifying to eliminate welding line pore / non fusion defect. The invention also discloses the repairing device used in the repairing method. The invention can adjust the needed data according to various situation of the repairing component currently, which can improve the repairing mission success rate of the component.

Description

technical field [0001] The invention relates to a repair method and device for steel structure welded parts, in particular to a repair method for weld pores / unfused defects of low-carbon steel cylinder pressure vessel parts and a device used in the method. Background technique [0002] Low-carbon steel cylinder pressure vessel products, such as automobile shock absorbers, hybrid airbags, inflatable springs, weld porosity / lack of fusion is one of the main defects of automatic welding. How to eliminate the pores / incomplete fusion of the fully automatic welding seam from the preparation of the welding process plays an important role in ensuring the welding quality. At present, the following aspects are mainly used to ensure the welding quality: choose high-purity carbon dioxide and argon to form a mixed gas, Prevent water from mixing in and form pores; prevent gas supply pipelines and welding nozzles from being blocked, and gas supply is not smooth, resulting in poor protecti...

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Problems solved by technology

[0004] However, because these products usually do not have special welding rework process equipment, traditionally they still follow MIG shielded welding habitually, so in the process of rework, even if the rework welding specification parameters are set higher than the official rework welding specification parameters It should be small, but it still cannot prevent the molten wire metal from being excessively cladding on the original weld metal

If the welding wire metal cladding is too much, grinding wheel grinding has to be carried out; however, the efficiency of manual grinding is low, and if it is inaccurate, it will damage the metal of the body, so some welding assemblies simply give up grinding wheel grinding after rework, resulting in the scrapping of parts. cause considerable economic loss

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