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Inner supporting device for storage tank tank-sealing circular seam friction stir welding and method thereof

A technology of friction stir welding and storage tanks, which is applied in welding equipment, non-electric welding equipment, welding/welding/cutting items, etc. It can solve the problems that the welding requirements cannot be realized, and achieve the effect of light weight, convenient disassembly and assembly, and light weight

Active Publication Date: 2015-03-11
CAPITAL AEROSPACE MACHINERY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a friction stir welding inner support device and method for storage tank sealing circular seam, aiming at the inability to meet the welding requirements of the existing rod system inner support structure

Method used

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  • Inner supporting device for storage tank tank-sealing circular seam friction stir welding and method thereof
  • Inner supporting device for storage tank tank-sealing circular seam friction stir welding and method thereof
  • Inner supporting device for storage tank tank-sealing circular seam friction stir welding and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] like figure 1 As shown, a friction stir welding internal support device for tank sealing circular seam according to the present invention, its special main body is a spliced ​​support ring 2, and 24 pneumatic support blocks are evenly distributed on the circumference of the spliced ​​support ring 2 3;

[0028] like figure 2 As shown, the center of the splicing support ring 2 is a snap ring 4, and the periphery of the snap ring 4 is connected to an annular structure formed by connecting 6 ring petals 5; The seat 6 is connected to a certain number of connecting beams 7, wherein, one end of each supporting seat 6 is connected to the ring petal 5, and the other end is correspondingly connected to two connecting beams 7; each connecting beam 7 is connected to a connecting block 8; every two phases Adjacent connecting blocks 8 form a ring structure by connecting one ring seat 9 . That is, the periphery of the annular structure formed by the connection of six ring petals 5...

Embodiment 2

[0033] A kind of internal support method of the friction stir welding of the storage tank sealing circular seam using the internal support device described in embodiment 1, such as Image 6 As shown, it includes the following steps:

[0034] (a) Push the splicing support ring 2 and the 24 pneumatic struts 3 on it to the bottom of the tank barrel section 10; connect the two air circuit connecting plates 12 and push them to the rear end of the splicing support ring 2 to assemble and lock them;

[0035] (b) After docking the tank bottom 11 with the tank barrel section 10, the cylinder 16 pushes the pneumatic struts 3 to move outward along the radial direction of the splicing support ring 2, so that 24 pneumatic struts 3 connect the tank bottom 11 and Friction stir welding is performed after the tank section 10 is braced;

[0036] (c) After the friction stir welding is completed, first disassemble the two gas circuit connecting plates 12 and take them out from the manhole flange;...

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Abstract

The invention provides an inner supporting device for storage tank tank-sealing circular seam friction stir welding and a method thereof. A splicing supporting ring is arranged as a device main body; a plurality of pneumatic supporting blocks are uniformly connected with the circumference of the splicing supporting ring; each of the pneumatic supporting blocks is respectively connected with a cylinder; the pneumatic supporting blocks are driven to stretch along a radial direction of the splicing supporting ring by the cylinders; air pipes and valves of all the cylinders are uniformly arranged on an annular structure which is formed by connecting two air-path connecting plates; a positioning ring is arranged on one side of the splicing supporting ring; positioning pin shafts are arranged on the positions, corresponding to a clamping ring, a ring petal, a supporting base, a connecting beam, a connecting block and a ring base of the splicing supporting ring, on the positioning ring. According to the device and the method, the welding requirement of the storage tank tank-sealing circular seam is efficiently and quickly met; after the welding, the inner supporting device can be conveniently taken out of a manhole flange with a diameter being 350mm; after the inner supporting device is taken out, the whole device is high-efficiently reset on the positioning ring and is prepared for the next use.

Description

technical field [0001] The invention belongs to the aerospace equipment welding technology, and in particular relates to a friction stir welding inner support device and method for a tank sealing circular seam. Background technique [0002] Friction stir welding technology has become a very ideal welding method for aluminum alloy tank welding in the aerospace field due to its many technical advantages such as high joint quality, less defects, and small deformation. Friction stir welding has very high requirements on the roundness of the product after assembly, and is very sensitive to deformation in the thickness direction, so it has more stringent requirements on the inner support mechanism. It is required that it not only has high rigidity and high strength, but also has high round support accuracy, accurate reset and easy operation. For the horizontal friction stir welding of the tank sealing ring seam, a radial upsetting force of 10 tons must be applied to the product, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26B23K101/12B23K103/10
CPCB23K20/126B23K2101/12B23K2103/10
Inventor 王国庆王德志高培涛孙秀京黄诚李文光李海峰高彦军张训魏瑞刚
Owner CAPITAL AEROSPACE MACHINERY
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