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Welding method of dissimilar steels such as 917 low-magnetic steel and CCSB steel

A welding method and low magnetic steel technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., to achieve the effects of small welding deformation, high production efficiency and excellent mechanical properties

Active Publication Date: 2012-02-22
中船桂江造船有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to find an ideal welding material and shielding gas by analyzing the characteristics of 917 low-magnet steel and CCSB steel and the welding characteristics of the two steels, and to cooperate with Gugaoquan position. Automatic welding trolley to achieve the welding method of 917 low magnetic steel + CCSB steel dissimilar steel with uniform and beautiful welding seam shape, small welding deformation and excellent mechanical properties of welded joints

Method used

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  • Welding method of dissimilar steels such as 917 low-magnetic steel and CCSB steel
  • Welding method of dissimilar steels such as 917 low-magnetic steel and CCSB steel
  • Welding method of dissimilar steels such as 917 low-magnetic steel and CCSB steel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Embodiment 1: Welding method of flat butt joint of 917 low magnetic steel + CCSB steel dissimilar steel.

[0027] (1) Welding requirements for flat butt joints: the inclination angle of the weld seam is 0°, the deviation is ±5°, the weld seam rotation angle is 90°, the deviation is ±10°;

[0028] (2) The welding equipment is: TPS4000 welding machine, equipped with VR4000 wire feeder, using water-cooled automatic welding gun;

[0029] (3) Welding wire: ER309L, Φ1.0mm;

[0030] (4) The protective gas is: Ar+1.5% CO 2 ;

[0031] (5) The welding parameters are:

[0032]

[0033] Welding process: Cooperate with two certified welders, assemble 917 low magnetic steel plate and CCSB steel plate according to the requirements of 70°V-shaped groove, blunt edge of 1-2mm, and assembly gap of 0-1mm, and 917 low magnetic steel plate and The CCSB steel plate is strengthened laterally to prevent deformation after welding; after the assembly of the 917 low magnetic steel plate ...

Embodiment 2

[0034] 2. Embodiment 2: Welding method of horizontal butt joint of 917 low magnetic steel + CCSB steel dissimilar steel.

[0035] (1) Horizontal butt welding requirements: weld inclination angles are 0°, 180°, deviation ±5°; weld seam rotation angles are 0°, 180°, deviation ±10°;

[0036] (2) The welding equipment is: TPS4000 welding machine, equipped with VR4000 wire feeder, using water-cooled automatic welding gun;

[0037] (3) Welding wire: ER309L, Φ1.0mm;

[0038] (4) The protective gas is: Ar+1.5% CO 2 ;

[0039] (5) The welding parameters are:

[0040]

[0041] Welding process: Cooperate with two certified welders, assemble 917 low magnetic steel plate and CCSB steel plate according to the requirements of 70° V-shaped groove, blunt edge 1-2mm, and assembly gap 0-1mm, and make 917 low magnetic steel plate and CCSB steel plate Implement transverse reinforcement to prevent deformation after welding; after the 917 low-magnetic steel plate and CCSB steel plate are asse...

Embodiment 3

[0042] 3. Embodiment 3: the welding method of supine butt joint of 917 low magnetic steel + CCSB steel dissimilar steel.

[0043] (1) Upward butt welding requirements: the inclination angle of the weld is 0°, 180°, the deviation is ±15°, the welding seam rotation angle is 270°, the deviation is ±15°;

[0044] (2) The welding equipment is: TPS4000 welding machine, equipped with VR4000 wire feeder and water-cooled automatic welding gun;

[0045] (3) Welding wire: ER309L, Φ1.0mm;

[0046] (4) The protective gas is: Ar+1.5% CO 2 ;

[0047] (5) The welding parameters are:

[0048]

[0049]Operation process: Cooperate with two certified welders, assemble 917 low magnetic steel plate and CCSB steel plate according to 70° V-shaped groove, blunt edge is 1-2mm, assembly gap is 0-1mm, and 917 low magnetic steel plate and CCSB The steel plate shall be strengthened transversely to prevent deformation after welding; after the 917 low magnetic steel plate and CCSB steel plate are asse...

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Abstract

The invention discloses a welding method of dissimilar steel such as 917 low-magnetic steel and CCSB steel, belonging to the welding field of material processing engineering. The welding method is used for manufacturing the welding structures of low magnetic conductivity used for ship manufacture, parts of special vehicles, military equipment and the like. In the invention, a stainless steel solid welding wire ER309L ([Phi]=1.0 mm) suitable for the welding of dissimilar steel, welding equipment and a walking device are adopted; binary mixed gas (Ar+1.5%CO2) is used for protection; flat butt welding, horizontal butt welding and upward butt welding of dissimilar steel such as 917 low-magnetic steel and CCSB steel are performed according to corresponding welding parameters; and full-automatic vertical butt welding is performed by using a full-position automatic welding trolley. Through the welding method disclosed by the invention, the problems of difficult operation, low production efficiency, low welding seam quality, great structural deformation and the like caused by magnetic blow in the traditional shielded metal arc welding method are effectively solved; and the welding method is convenient to operate, has high production efficiency, and realizes the forming of uniform and beautiful welding seams, small welding deformation; moreover, welding joints have good mechanical performances.

Description

1. Technical field [0001] The invention relates to a welding method of 917 low magnetic steel + CCSB steel dissimilar steel, in particular to a welding method of 917 low magnetic steel + CCSB steel dissimilar steel with molten electrode mixed gas as protection welding, belonging to the welding field of material processing engineering , mainly used in shipbuilding, special vehicle parts, military equipment and other welded structures that require low magnetic permeability. 2. Background technology [0002] For the welding of 917 low magnetic steel + CCSB steel dissimilar steel, CW395 electrode has been used for electrode arc welding in the past. There are many problems in this welding method: [0003] 1. Due to the characteristics of the material itself, the intermittent arc-extinguishing welding method must be used during welding, which has low work efficiency, and the phenomenon of magnetic deflection blowing is serious, and the welding operation is difficult, especially in...

Claims

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Application Information

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IPC IPC(8): B23K9/173B23K9/23B23K9/133B23K35/30B23K103/18
Inventor 张武钧庞文凌宏钊熊宏权
Owner 中船桂江造船有限公司
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