TIG welding method for low-activation martensitic steel

A technology of martensitic steel and welding methods, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of easy generation of pores and microcracks, poor weldability, etc., and achieve smooth and beautiful macroscopic appearance and good shape , the effect of high arc column temperature
CN112091380AActive Publication Date: 2020-12-18SOUTHWESTERN INST OF PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHWESTERN INST OF PHYSICS
Publication Date
2020-12-18

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Abstract

The invention discloses a TIG welding method for low-activation martensitic steel. According to the method, a welding wire made of low-activation martensitic steel base metal is used, so that the welding wire and a welding test plate are made of the same material, and the welding matching performance is improved; the diameter of the welding wire is set to be phi 1.6-2.4mm, and the welding test plate is subjected to single-face welding and double-face forming through a TIG welding process; and by controlling process parameters corresponding to welding and heat treatment, a welding joint of thelow-activation martensitic steel is flat, attractive and free of cracks and air holes, and the good performance of the welding joint is guaranteed.
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Description

technical field

[0001] The invention belongs to the field of welding technology, and in particular relates to a TIG welding method for low-activation martensitic steel, which is applied in the development of cladding of a fusion reactor solid-state breeder. Background technique

[0002] The International Thermonuclear Experimental Reactor (ITER) is an international cooperative research program project to verify the feasibility of fusion energy science and technology. An important function of ITER is to test the tritium-producing cladding experimental module. Its main goal is to verify and obtain related technologies for tritium breeding, which is very important for the future development of fusion test demonstration reactors. Low activation martensitic steel has excellent thermophysical and mechanical properties such as low radiation swelling, thermal expansion coefficient, and high thermal conductivity. It is the preferred structural material for cladding experimental modul...

Claims

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