Method and device for strong solid phase repair welding such as friction stir welding defects of storage tank

A technology of friction stir welding and welding defects, which is applied in the direction of welding equipment, non-electric welding equipment, household containers, etc., to achieve the effect of stabilizing the welding process

Active Publication Date: 2016-01-27
CAPITAL AEROSPACE MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a method and device for repairing welding defects in tank friction stir welding and other strong solid phases, which solves the problem of repairing welding after welding defects are found in the circular seam of general assembly, and the repairing welding process is stable and reliable

Method used

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  • Method and device for strong solid phase repair welding such as friction stir welding defects of storage tank
  • Method and device for strong solid phase repair welding such as friction stir welding defects of storage tank
  • Method and device for strong solid phase repair welding such as friction stir welding defects of storage tank

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Effect test

Embodiment 1

[0026] like figure 1 and figure 2 As shown, a device for strong solid phase repair welding such as tank friction stir welding defects according to the present invention includes a head box 1, a bed tail box 2, a tank support mechanism one 3, a tank support mechanism two 4, Hug ring 5, inner strut group 7.

[0027] Wherein, the bedside box 1, the ring 5 and the tail box 2 are arranged side by side, and the ring 5 is positioned between the head box 1 and the tail box 2, so that the two ends of the welded storage tank section are installed on the head box 1 and the tail box respectively. On the bed end box 2, the tank tube section 9 passes through the clasp 5; below the tank tube section 9, between the clasp 5 and the bedside box 1, a tank support mechanism 2 4 is set; below the tank tube section 9, A storage tank supporting mechanism-3 is arranged between the clasp 5 and the tail box 2 .

[0028] Fix the main machine 6 for repair welding directly above the ring 5, and place ...

Embodiment 2

[0033] According to the present invention, a method for repairing welding of strong solid phases such as tank friction stir welding defects using the repairing welding device described in Embodiment 1, the method includes the following steps:

[0034] (a) if figure 1 and figure 2 As shown, after finding that there is a welding defect in the friction stir welding assembly girth of the tank barrel section 9, the welded tank barrel section 9 is first installed between the head box 1 and the bed tail box 2; the tank barrel section 9 passes through Over the ring 5, and the welding defect of the storage tank section 9 is located at the ring 5; the repair welding host 6 is fixed directly above the ring 5.

[0035] (b) Install on repair welding host 6 Milling cutter, cut one at the position of the defective weld seam on the tank barrel section 9 Through holes, the inner strut group 7 is set inside the tank section 9 and at the position where there is a welding defect.

[0036] ...

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Abstract

The invention provides a method and a device for equivalent solid-phase repairing welding of a tank friction stir welding defect. A welded tank drum section is mounted between a machine head box and a machine tail box; the tank drum section passes through an embracing ring and a welding defect of the tank drum section is located on the embracing ring; a repairing welding host machine is fixed right above the embracing ring; a milling cutter is mounted on the repairing welding host machine; a through hole is arranged in a welding position with the defect on the tank drum section; an inner supporting rod set is arranged on a welding defect position in the tank drum section; a positioning pin is mounted on the repairing welding host machine, and then a welding base plate is in close contact with an inner wall of the tank drum section; the positioning pin is detached; a friction stopper rod is mounted on the repairing welding host machine; the friction stopper rod and the through hole in the tank drum section generate sufficient friction heat and plastic deformation. According to the method and the device, the repairing welding process is stable and reliable; the whole property of a repairing welding joint is equivalent to the property of a friction stir welding joint; a repairing welding device is used for effectively solving a repairing welding problem after the welding defect of a total assembling circular seam under a tank-forming state is detected.

Description

technical field [0001] The invention belongs to a method for manufacturing a storage tank of a carrier rocket, and in particular relates to a method and a device for repairing strong solid-phase repair welding such as friction stir welding defects of a large-diameter tank. Background technique [0002] Friction stir welding technology, as a new solid-phase welding technology, has been gradually applied to the manufacture of aluminum alloy storage tanks of launch vehicles in various aerospace agencies around the world due to its high quality joints, less welding defects, and a green and pollution-free welding process. , from the cylinder section, the bottom of the box to the ring seam of the final assembly. Although this technology has many technical advantages, it is inevitable that welding defects will occur in practical engineering applications, such as holes, grooves, incomplete penetration, etc. Therefore, in order to realize the large-scale application of this technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/12B23K20/24
CPCB23K20/1245B23K20/24B23K2101/12
Inventor 王国庆郝云飞李延民赵衍华周庆王伟孙忠绍马建波苏磊
Owner CAPITAL AEROSPACE MACHINERY
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