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Air inflating tool for protecting welded back surface of stainless steel plate

A backside protection, stainless steel plate technology, applied in the direction of providing/removing protective gas, welding accessories, etc., can solve the problems of poor protection, excessive gas rejection, gas turbulence, etc., to achieve good protection effect and replacement speed. The effect of speeding up and avoiding waste

Active Publication Date: 2020-02-18
CHENGXI SHIPYARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the overall protective gas is filled, it will cause gas gyration and turbulence, resulting in excessive gas repulsion, which will not only cause gas waste, but the actual protection effect is not good

Method used

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  • Air inflating tool for protecting welded back surface of stainless steel plate
  • Air inflating tool for protecting welded back surface of stainless steel plate
  • Air inflating tool for protecting welded back surface of stainless steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 , figure 2 As shown, the present invention is a protective inflatable tool for welding the back of a stainless steel plate, including a back protection inflatable tank 1 arranged in cooperation with the welding seam on the back side, and a V-shaped or U-shaped inflatable protective cover 2 is arranged in the back protection inflatable tank 1. A diffusion buffer 3 is slidably arranged in the inflatable protective cover 2 , and an end of the diffusion buffer 3 located outside the back protection inflation tank 1 is provided with a protective gas pipe joint 4 . Diffusion buffer 3 is a copper pipe with a row of argon gas inlet holes 5 on the surface. Air inlet holes 5 are arranged along the length direction of the copper pipe. The angle steel 6 is welded and fixed, and the four angle steels 6 are fixedly arranged on the backing floor, and the two longitudinal angle steels 6 are respectively arranged on both sides of the copper pipe, and one of the horizon...

Embodiment 2

[0030] The difference from Embodiment 1 is that, as image 3 As shown, the diffusion buffer 3 is fixedly provided with a connecting ring 9, and a connecting rod 11 with a hook 10 is arranged to match the connecting ring 9, and a hook 10 is provided at both ends of the connecting rod 11, one of which is connected to the connecting ring 9 The other one cooperates with the connecting ring 9 fixedly arranged on the welding equipment 12 .

Embodiment 3

[0032] The difference from Embodiment 1 is that, as Figure 4 to Figure 8 shown (for ease of illustration, Figure 7 , Figure 8 Only one adjustment line is shown in the figure), and the part of the diffusion buffer 3 located outside the back protection air tank 1 is covered with an air shielding sleeve 7 . The air-blocking sleeve 7 is tubular made of plastic film material, and the two pipe ends of the air-blocking sleeve 7 are fixed with elastic rubber sealing rings 8, and the length of the air-blocking sleeve 7 is equivalent to the length of the copper pipe; the diffusion buffer 3 A sealing rubber plate 13 is fixed at one end of the back protection inflatable groove 1, and a sealing rubber strip 14 is fixedly installed on the edge of the angle steel 6 facing the part to be welded; the sealing rubber plate 13 is provided with one or two exhaust holes 15 . A baffle plate 16 for adjusting the size of the exhaust hole 15 is hinged on the sealing rubber plate 13 , and an adjus...

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Abstract

The invention discloses an air inflating tool for protecting the welded back surface of a stainless steel plate. The air inflating tool comprises a back-protecting air inflating groove which is arranged in a manner of being matched with a welding seam in the welded back surface; a V-shaped or U-shaped air inflation protective hood is arranged inside the back-protecting air inflating groove; a diffusion buffer is slidably arranged inside the air inflation protective hood; and the end, positioned outside the back-protecting air inflating groove, of the diffusion buffer is provided with a protective air pipe joint. When being used for implementing flat welding operation for the stainless steel plate, the air inflating tool is simple and convenient to operate, achieves a good protection effectand improves the work efficiency. The air inflating tool is light, portable and reasonable in structure and can be regulated and moved according to actual welding length. Air inflation is optimized by adopting an input air diffusion buffer; the back surface is intensively protected; the back surface of the welding seam of the stainless steel plate is mainly white and golden yellow, and an optimalprotection effect is achieved; argon enters a protection region via the diffusion buffer so that the argon and the air are exchanged more quickly; and thus the oxygen content in the protection regionis reduced relatively quickly.

Description

technical field [0001] The invention relates to an inflatable tool for protecting the welding back of a stainless steel plate. Background technique [0002] In the production process of the marine desulfurization tower device, the main body of the desulfurization tower involved is made of super austenitic stainless steel 254SMo and super duplex stainless steel 2507 plates. The diameter of the tank is about 3m, and the thickness of the plate is 8mm. SUS316L stainless steel piping accessories are also installed. For the welding of the above-mentioned stainless steel plates, some enterprises use manual tungsten argon arc welding (TIG) backing + solid wire gas shielded welding (GMAW) filling combined welding process, single-sided welding. In order to ensure the quality of root welding, mixed gas (90% N 2 +10%H 2 ) for inflatable protection. When argon-arc welding of stainless steel weld seam is used as bottom welding, because the oxidation reaction of chromium (Cr) in the ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/32
CPCB23K9/32B23K9/325
Inventor 刘秋亮黄爱龙
Owner CHENGXI SHIPYARD
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