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Tubulation welding method of stainless steel outer composite tube

A welding method, stainless steel technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of low welding efficiency, complicated welding process, large consumption of welding materials, etc., to save welding materials, simple welding method, durable Erosion good effect

Active Publication Date: 2015-05-13
云南昆钢新型复合材料开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complicated welding procedures, large consumption of welding materials, and low welding efficiency during the production of stainless steel outer composite pipes, the present invention provides a pipe welding method for stainless steel outer composite pipes to reduce welding procedures and avoid waste of welding materials , improve welding efficiency

Method used

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  • Tubulation welding method of stainless steel outer composite tube
  • Tubulation welding method of stainless steel outer composite tube
  • Tubulation welding method of stainless steel outer composite tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 , 2 , 3.

[0036] The 2.0mm thick stainless steel clad plate to be welded (the base carbon steel 12 has a thickness of 1.6mm, and the stainless steel clad layer 11 has a thickness of 0.4mm) is made into a stainless steel outer clad pipe to be welded by the tube blank forming process before the welding process 1 , fixed in the vertical roller pair 2 and 7 to support the stainless steel outer composite pipe 1 to be welded, and at the same time control the welding gap of argon tungsten arc welding to be 0.2-0.8mm. Tungsten argon arc welding, natural slow cooling, forced water cooling, welding slag removal, gas shielded metal welding, natural slow cooling, and forced water cooling are all carried out in sequence during the movement of the tube blank formed by bending the stainless steel clad plate Yes, the moving speed of the tube blank formed by bending the stainless steel clad plate is 1.2m / min.

[0037] (1) Use argon tungsten arc welding torch 3 for a...

Embodiment 2

[0044] Such as figure 1 , 2 , 3.

[0045] The 3.0mm thick stainless steel composite plate to be welded (in which the thickness of the base carbon steel 12 is 2.4m, and the thickness of the stainless steel clad layer 11 is 0.6mm) is made into the stainless steel outer composite pipe 1 to be welded by the tube blank forming process before the welding process , fixed in the vertical roller pair 2 and 7 to support the stainless steel outer composite pipe 1 to be welded, and at the same time control the welding gap of argon tungsten arc welding to be 0.4-1mm. Tungsten argon arc welding, natural slow cooling, forced water cooling, welding slag removal, gas shielded metal welding, natural slow cooling, and forced water cooling are all carried out in sequence during the movement of the tube blank formed by bending the stainless steel clad plate Yes, the moving speed of the tube blank formed by bending the stainless steel clad plate is 0.8m / min.

[0046] (1) Use argon tungsten arc w...

Embodiment 3

[0053] Such as figure 1 , 2 , 3.

[0054] The 5.0mm thick stainless steel clad plate to be welded (in which the thickness of base carbon steel 12 is 4mm, and the thickness of stainless steel clad layer 11 is 1mm) is made into the stainless steel outer clad pipe 1 to be welded through the tube blank forming process before the welding process, and fixed In the vertical roller pair 2 and 7, to support the stainless steel outer composite pipe 1 to be welded, while controlling the welding gap of argon tungsten arc welding to be 1.5-2mm. Tungsten argon arc welding, natural slow cooling, forced water cooling, welding slag removal, gas shielded metal welding, natural slow cooling, and forced water cooling are all carried out in sequence during the movement of the tube blank formed by bending the stainless steel clad plate Yes, the moving speed of the tube blank formed by bending the stainless steel clad plate is 0.3m / min.

[0055] (1) Use argon tungsten arc welding torch 3 for argo...

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Abstract

The invention discloses a tubulation welding method of a stainless steel outer composite tube. The lower portion of the gap of tube blanks formed by bending a stainless steel composite plate is directly welded in an argon tungsten-arc welding mode, basic layer carbon steel of the stainless steel composite plate is welded and then automatically forms a downwards concave welding joint, after the welding joint is forcedly cooled with water, capping welding is directly carried out on the welding joint in a gas metal arc welding mode until the surplus height of the welding joint is 1-1.50 mm, then water is sprayed for cooling, and tubulation welding of the stainless steel outer composite tube is finished. The tubulation welding method is simpler than an existing method, the stainless steel outer composite tube does not need to be grooved, forming is realized one time, and as the protective atmosphere is gas, good corrosion resistance is realized, and the cost is lower compared with other welding methods. The tubulation welding method of the stainless steel outer composite tube guarantees that the strength of the welding joint of the stainless steel outer composite tube is higher than that of parent metal, and also guarantees that the welding joint of the stainless steel composites has good anti-corrosion performance.

Description

technical field [0001] The invention relates to a pipe making and welding method for a stainless steel outer composite pipe, belonging to the technical field of pipe making and welding. Background technique [0002] Stainless steel outer composite pipe is a newly developed steel pipe variety. The pipe material, that is, the stainless steel composite material, uses ordinary carbon steel as the base material, and stainless steel as the cladding material. The base (carbon steel) has sufficient structural strength through metallurgical bonding, and the cladding (stainless steel) has sufficient corrosion resistance. A new stainless steel composite material with better decorative properties. The stainless steel outer composite pipe uses stainless steel as the outer surface layer of the pipe, which has decorative and corrosion resistance, and uses carbon steel as the inner surface layer of the pipe, which has sufficient mechanical strength. In related composite material pipe maki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/167B23K35/38
CPCB23K9/167B23K9/173B23K35/38
Inventor 张竹明杜顺林尹正培应铖张跃李俊兴王云春武绍权邓增勇张凤珍李永昌
Owner 云南昆钢新型复合材料开发有限公司
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