A kind of titanium-steel composite plate double-wire MIG gas shielded welding welding method

A technology of molten electrode gas and welding method, which is applied in welding equipment, welding accessories, welding/welding/cutting objects, etc., can solve the problems of large welding stress and deformation, poor welding joint performance, limited inhibition effect, etc., and achieve welding deformation. Small, small weld contamination, the effect of suppressing the generation of

Active Publication Date: 2022-07-05
SHIJIAZHUANG TIEDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the complex fusion welding process of titanium steel clad plate, low welding efficiency and high welding cost, the formation of a single intermediate layer has limited inhibition effect on brittle intermetallic compounds, and the traditional fusion welding has large heat input, large welding stress and deformation, and heat Due to the serious coarsening of grains in the affected area and the poor performance of welded joints, the present invention proposes a welding method for titanium-steel composite plates with double-wire melting electrode gas shielded welding

Method used

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  • A kind of titanium-steel composite plate double-wire MIG gas shielded welding welding method
  • A kind of titanium-steel composite plate double-wire MIG gas shielded welding welding method
  • A kind of titanium-steel composite plate double-wire MIG gas shielded welding welding method

Examples

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Embodiment 1

[0052] A TA1 / Q345 titanium-steel composite plate double-wire MIG welding method specifically includes the following steps:

[0053] (1) The titanium steel clad plate to be welded is TA1 / Q345, and the groove design of the titanium steel clad plate is carried out. The size of the asymmetric X-shaped groove is shown in Table 1, and the groove is processed to remove the oil and impurities on the surface of the groove; Adjust the spatial position of the double wire. In the direction perpendicular to the welding direction, the distance between the projection points of the double wire end on the base metal plane is 0mm. In the direction parallel to the welding direction, the double wire is arranged in front and back as the leading welding wire and the following welding wire. The double wire end The distance between the projection points on the base metal plane is 5mm, the included angle between the axis extension line of the guiding welding wire and the base metal plane is 65°, and th...

Embodiment 2

[0068] A TA2 / Q345 titanium-steel composite plate double-wire MIG welding method specifically includes the following steps:

[0069] (1) The welded titanium-steel clad plate is TA2 / Q345, and the titanium-steel clad plate is grooved. The size of the asymmetric X-shaped groove is shown in Table 5. The groove is processed to remove the oil and impurities on the groove surface; Adjust the spatial position of the double wire. In the direction perpendicular to the welding direction, the distance between the projection points of the end of the double wire on the base metal plane is 0mm. In the direction parallel to the welding direction, the double wire is arranged in front and back as the leading welding wire and the following welding wire. The distance between the projection points on the base metal plane is 12mm, the included angle between the axis extension line of the guiding wire and the base metal plane is 75°, and the included angle between the axis extension line of the follow...

Embodiment 3

[0084] A TA2 / Q235 titanium-steel composite plate double-wire MIG welding method specifically includes the following steps:

[0085] (1) The titanium steel clad plate to be welded is TA2 / Q235, and the groove design of the titanium steel clad plate is carried out. The size of the asymmetric X-shaped groove is shown in Table 9, and the groove is processed to remove the oil and impurities on the surface of the groove; Adjust the spatial position of the double wire. In the direction perpendicular to the welding direction, the distance between the projection points of the end of the double wire on the base metal plane is 0mm. In the direction parallel to the welding direction, the double wire is arranged in front and back as the leading welding wire and the following welding wire. The distance between the projection points on the base metal plane is 18mm, the included angle between the axis extension line of the guiding wire and the base metal plane is 85°, and the included angle bet...

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Abstract

The invention relates to the technical field of welding, and specifically discloses a double-wire melting electrode gas shielded welding method for a titanium-steel composite plate. In the method for welding titanium-steel composite plates, groove design is performed on the titanium-steel composite plate; double-wire bottom welding is performed from the steel side; copper-based welding wires are used for both wires, and double-wire welding is performed from the titanium side to form a first-layer transition layer; double-wire is made of either niobium-based welding wire and vanadium-based welding wire, and double-wire welding is performed from the titanium side to form the second transition layer; multi-layer double-wire filling welding is performed from the titanium side until it is filled with titanium complex. Layer groove; multi-layer double wire filler welding is performed from the steel side until the groove of the steel base layer is filled. The welding method provided by the invention has the advantages of stable welding process, high welding efficiency, good welding seam formation, low welding heat input, good isolation effect of transition layer, and can effectively suppress the formation of brittle intermetallic compounds and grain coarsening in the heat affected zone. The residual stress and deformation of the joint are small, the purity of the weld is high, and the performance of the welded joint is good.

Description

technical field [0001] The invention belongs to the technical field of welding, and in particular relates to a welding method for double-wire melt-electrode gas shielded welding of titanium-steel composite plates. Background technique [0002] Titanium and its alloys have good physical and chemical properties such as low density, high specific strength, and strong corrosion resistance, while high-strength steel has excellent mechanical properties and low cost, which makes the use of titanium alloy / high-strength steel dissimilar metal composite plates. It can significantly reduce the weight of the structure and improve the corrosion resistance of the structure. Therefore, titanium-steel composite panels are widely used in petroleum, chemical, nuclear power, ships and other fields, such as power plant chimneys, petrochemical equipment containers, condenser tube sheets in nuclear power equipment, Vacuum salt production equipment, seawater desalination equipment, etc. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/173B23K9/133B23K9/235B23K9/32
CPCB23K9/173B23K9/133B23K9/235B23K9/32B23K2103/18
Inventor 胡连海陶国栋许昌玲蒋晓军霍佳磊吕小松吴泽帅卢立祥王松涛孙继友
Owner SHIJIAZHUANG TIEDAO UNIV
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