Welding material and welding method for fusion welding butt joint transition layer of titanium steel clad plate

Abstract

The invention discloses welding materials for butt welding of transition layers of a titanium clad steel plate and a welding method of the welding materials, and belongs to the technical field of metal material welding. The welding materials comprise a welding material for a surfacing layer and a near-titanium layer, a welding material for a bottoming layer, a welding material for a steel layer and a welding material for a titanium layer, wherein the welding material for the surfacing layer and the near-titanium layer comprises, by weight percentage, less than or equal to 0. 011% of carbon, less than or equal to 0.32% of silicon, 2.0-4.0% of manganese, less than or equal to 0.01% of phosphorus, less than or equal to 0.01% of sulfur, 10-17% of chromium, 2-16% of molybdenum, less than or equal to 2.0% of copper, less than or equal to 5.0% of ferrum and the balance nickel; and the welding material for the bottoming layer comprises more than or equal to 99.9% of nickel. The welding methodcomprises the following step that a groove form of a welding joint is designed to be an X-shaped groove, surfacing is carried out on the groove of the surfacing layer, then the near-titanium layer isfilled and welded with the near-welding material for the near-titanium layer, welding is carried out on the steel layer by using the welding material of ordinary carbon steel, and finally welding is carried out on the titanium layer by using an industrial TA2 welding wire. The welding materials and the welding method have the advantage that the fusion welding butt joint of the titanium clad steelplate has relatively high strength and toughness; and the problem of application bottleneck of welding of the titanium clad steel plate can be solved.

Description

technical field [0001] The invention belongs to the technical field of metal material welding, and in particular relates to a welding material and a welding method for fusion welding butt joint transition layers of titanium-steel composite plates. Background technique [0002] Titanium-steel clad plate not only has good low-temperature corrosion resistance of titanium cladding, but also has the strength and plasticity of base alloy steel, and has become an ideal material for the manufacture of corrosion-resistant equipment, and as a special steel for marine engineering, it has high performance and long life. , green environmental protection, low cost advantages. For the welding of titanium-steel clad plates, because titanium is extremely easy to form brittle compounds with iron, the difficulty of welding is greatly increased, and it has become the main bottleneck in the application of titanium-steel clad plates. At present, the welding of titanium-steel clad plates for engi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a welding material and welding method for the fusion welding butt joint transition layer of titanium steel composite plates, which solves the problems that there are obvious defects in the welding joint area, and it is difficult to be directly and widely used in the field of offshore platforms; help solve the problem Problems such as bottlenecks in the welding application of titanium steel clad plates

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