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Defect repairing method for welding seam of wrought aluminum alloy projectile launch canister

A technology of deformed aluminum alloy and defect repair, applied in welding equipment, auxiliary welding equipment, metal processing equipment, etc., can solve the problems of original defect amplification, secondary defects, unsuitable stress relief and other problems in welding repair and repair of defect parts, so as to reduce the The effect of amplifying the original defects, promoting slow release, and avoiding the risk of scrapping

Active Publication Date: 2021-11-19
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned analysis, the present invention aims to provide a method for repairing defects of deformed aluminum alloy projectile launch tube welds, which solves the problem of deformed aluminum alloy projectiles in the prior art. Most of the welding seam defects of the volume emission tube are not suitable for stress relief by the traditional annealing method after welding repair, and the problem of enlargement of the original defects and larger secondary defects is easy to occur during the welding repair process of the defect parts

Method used

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  • Defect repairing method for welding seam of wrought aluminum alloy projectile launch canister

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] The method for repairing the defects of the weld seam of the deformed aluminum alloy projectile launching cylinder in this embodiment includes the following steps:

[0095] Step a: first use a drill to remove cracks and hole defects in the welding seam of the deformed aluminum alloy projectile launch tube.

[0096] Step b: Use a blowtorch to perform a preheating, a preheating and heat preservation, a second preheating and a second preheating and heat preservation in the area of ​​about 100 mm around the weld defect removal part of the deformed aluminum alloy projectile launcher, and a preheating and heat preservation for the first time. The heating temperature is 200°C, the first preheating time is 40min, the second preheating temperature is 250°C, and the second preheating time is 30min.

[0097] Step c: Depending on the depth and range of the weld defect of the deformed aluminum alloy projectile launcher, one or more welding repairs are performed, and the "priming" we...

Embodiment 2

[0110] The method for repairing the defects of the weld seam of the deformed aluminum alloy projectile launcher provided in this embodiment includes the following steps:

[0111] Step a: first use a drill to remove cracks and hole defects in the weld seam of the deformed aluminum alloy projectile launch tube.

[0112] Step b: Use a blowtorch to perform a preheating, a preheating and heat preservation, a second preheating and a second preheating and heat preservation in the area of ​​about 30 mm around the weld defect removal part of the deformed aluminum alloy projectile launcher, and a preheating and heat preservation for the first time. The heating temperature is 220°C, the primary preheating time is 50 minutes, the secondary preheating temperature is 240°C, and the secondary preheating time is 35 minutes.

[0113] Step c: Depending on the depth and range of the weld defect of the deformed aluminum alloy projectile launcher, one or more welding repairs are performed, and the...

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Abstract

The invention discloses a defect repairing method for a welding seam of a wrought aluminum alloy projectile launch canister, belongs to the technical field of precision forming, and solves the problems that in the prior art, most of defects of welding seams of wrought aluminum alloy projectile launch canisters are not suitable for being subjected to stress elimination through a traditional annealing method, and original defect amplification and larger secondary defects are likely to be generated in the repair welding process of defective parts. The defect repairing method comprises the following steps that the defect of the welding seam of the wrought aluminum alloy projectile launch canister is removed; the periphery of the defective part of the welding seam of the wrought aluminum alloy projectile launch canister is preheated; repair welding is performed on the defective part of the welding seam of the wrought aluminum alloy projectile body launch canister; after welding repair is performed on the welding repair part and the periphery, heat preservation is conducted, and cooling is conducted to the room temperature; and defect repair of the welding seam of the wrought aluminum alloy projectile body launch canister is completed. The defect repairing method for the welding seam of the wrought aluminum alloy projectile launch canister can be used for repairing the defects of the welding seam of the wrought aluminum alloy projectile launch canister.

Description

technical field [0001] The invention belongs to the technical field of precision forming, and in particular relates to a method for repairing defects of welding seams of deformed aluminum alloy projectile launching cylinders. Background technique [0002] Deformed aluminum alloys represented by aluminum alloy materials such as 5A06 are widely used in aerospace missile bearing frames, cylinders, boxes and other structures due to their good plasticity, excellent forming and welding performance, but due to the welding thickness Thickness, strong welding restraint, improper selection of welding process, insufficient stress release after welding, etc., will easily lead to deformation of aluminum alloy, large thickness and large size parts after welding, prone to pores, cracks, inclusions, incomplete fusion, incomplete penetration, etc. defect. [0003] At present, repairing defects such as air holes, cracks, inclusions, lack of fusion, and incomplete penetration on deformed alum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23K37/00
CPCB23P6/00B23K37/003
Inventor 师利民兰晓宸李鹤鹏马向宇解西安郭成龙
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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