Method for welding martensite heat-resistant steel
A welding method and seam closing technology, which are applied to welding equipment, arc welding equipment, and the edge of workpieces, etc., can solve the problems of increasing labor and material costs in manufacturing plants, and achieve improved defect detection rates, reduced inventory, and simple production Effect
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[0059] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0060] Example.
[0061] A martensitic heat-resistant steel container closing seam welding method is characterized in that it comprises the following steps:
[0062] Step 1. Processing welding groove:
[0063] 100% UT inspection is carried out on the edge of the weld to be welded along the axial direction of 2 times the wall thickness and 30mm in length to prevent interlayer or loose defects. The welding groove is processed by planing machine, and the welding groove is a symmetrical U-shaped welding slope The groove angle is α=22~24°, the blunt edge thickness of the welding groove p=3~4mm, the root radius of the welding groove R1=8~10mm, and the root gap b≤0.5mm;
[0064] Step 2, preparation before welding, the me...
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