Automatic submerged-arc welding process of Q235 steel plate
A submerged arc automatic welding and welding process technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as low quality of welding workpieces and accidents, achieve fast and safe welding, ensure welding quality, and select materials accurately Normative effect
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[0021] A kind of submerged arc automatic welding process of Q235 steel plate, the thickness of Q235 steel plate is 6mm, it is characterized in that: comprise the following steps:
[0022] (1) Preparation before welding
[0023] First, remove the dirt on the surface of the welded parts, such as lumps of rust oxides, oil stains, etc.;
[0024] Second, choose the welding material, the welding wire is H08MnA steel wire, the flux is HJ401-H08A type HJ431 flux, and the diameter of the welding wire is 4mm;
[0025] Third, clean the surface of the welding wire, do not allow corrosion, and dry the damp flux;
[0026] (2) Temporary spot welding
[0027] First, use manual arc welding for temporary spot welding, and the length of spot welding is 50-80mm;
[0028] Second, precautions for temporary spot welding. The height and width of temporary spot welding must not exceed the size of the future weld. It should be a part of the future weld. The arc crater should be filled. ; ...
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