Ferritic steel barrel butt-junction circular-seam hot-wire TIG multi-layer multipath welding method
A low-alloy steel, multi-layer and multi-channel technology, applied in welding equipment, heat treatment furnace, arc welding equipment, etc., can solve the problems of low deposition efficiency and long processing cycle, so as to improve processing quality, reduce processing cost, prevent The effect of slag accumulation
Inactive Publication Date: 2009-03-25
HARBIN JIANCHENG GRP
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Disclosed is a hot filament TIG multi-layer and multi-track welding method for low alloy steel cylinder butt joint girth welding, relating to a low alloy steel cylinder butt joint girth welding method which solves the problems in the prior low alloy steel cylinder butt joint girth welding that the welding deposition rate of the cold filament TIG filling welding is low so as to result in low product qualification ratio and the long process cucle. The welding process includes: firstly, processing the slope mouth of the end face the awaiting welding cylinder piece; secondly, processing the welding for the U-shape slope mouth, pre-welding and preheating for the two awaiting welding cylinder pieces, performing bottom welding, multi-layer and multi-track filling welding and multi-layer and multi-track cap welding; thirdly, post-heating and degassing hydrogen; fourthly, stress removing and annealing; fifthly, modifying and quenching. The cylinder butt joint welding by the invention can increase the welding deposition ratio of the welding filament by 2 to 3 times and greatly increase the product qualification ratio by first delivery check. The method of the invention is particularly applicable to the 35CrMnSiA alloy cylinder butt joint welding.
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Property | Measurement | Unit |
Diameter | 1.6 | mm |
Tensile strength | 1800.0 ~ 1900.0 | mPa |
Wall thickness | 15.0 ~ 50.0 | mm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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