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Method for improving deformation consistency between connector and parent metal through postwelding predeformation

A pre-deformed and consistent technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of uncoordinated cylindrical shape, large curvature of the surrounding base metal, deformation, etc., to improve production efficiency, The effect of improving the first pass rate and reducing the cost

Active Publication Date: 2018-04-27
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the longitudinal seam welding of the cylinder is completed, the metal of the base metal in the heat-affected zone of the weld will be deformed due to welding heat, which will cause the curvature of the base metal near the heat-affected zone to increase, and cause inconsistency with the shape of the cylinder.

Method used

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  • Method for improving deformation consistency between connector and parent metal through postwelding predeformation
  • Method for improving deformation consistency between connector and parent metal through postwelding predeformation
  • Method for improving deformation consistency between connector and parent metal through postwelding predeformation

Examples

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Effect test

Embodiment

[0045] Taking an aluminum alloy thin plate cylindrical welded component as an example, its shape and size are as follows: figure 1 As shown, the material of the part is 5083 aluminum alloy, the length is 1100mm, the thickness is 3mm, and the diameter of the cylinder after welding the longitudinal weld is 219mm.

[0046] The processing process of the cylinder is carried out as follows:

[0047] Taking an aluminum alloy thin plate cylindrical welded component as an example, its shape and size are shown in figure 1 As shown, the material of the part is 5083 aluminum alloy, the length is 1100mm, the thickness is 3mm, and the diameter of the cylinder after welding the longitudinal weld is 219mm.

specific Embodiment approach

[0048] The specific embodiment is carried out according to the following process steps:

[0049] (1) Design tooling: tooling a (such as figure 2 (shown) is the pad used for cold working and pre-deformation after the longitudinal weld seam of the cylinder is welded, which is consistent with the shape of the cylinder. Tooling b (such as image 3 (shown) is a conformal clamping tool, that is, a fastening device that is placed on the weld seam of the cylinder during heat treatment at the welded joint and whose shape is consistent with the cylinder. The main body of the tooling b is two metal molds that fit together up and down—the punch 1 and the die 2. The convex shape of the punch is consistent with the inner surface of the cylinder, and the concave surface of the die is consistent with the outer surface of the cylinder. The two ends of the mold and the die are fastened by fastening bolts 3, so as to achieve the effect of clamping the welding joint of the cylinder body.

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Abstract

The invention discloses a method for improving the deformation consistency between a connector and parent metal through postwelding predeformation. The method comprises the steps that 1, cold machining predeformation is conducted, specifically, a predeformation tool is provided, a cushion block is put on a barrel body, the lower surface of the cushion block is attached to the outer surface of thebarrel body, the upper surface of the cushion block is knocked through a hammer, and accordingly, generated deformation of a longitudinal welding seam and the shape of a parent metal body are kept tobe consistent; and 2, heat treatment is conducted, specifically, a heat treatment tool is provided; the barrel body is put between a male die and a female die; a fastener is subjected to pre-tightening, and accordingly, the barrel body is clamped between the male die and the female die; and the barrel body is fully wrapped by a heating blanket to be heated, a final temperature is set at first, a plurality of temperature nodes are selected, the temperature is gradually increased when heating is started, when the temperature is increased to the temperature nodes, the fastener is tightened to a certain extent till the temperature is increased to the final temperature, and the fastener is completely tightened. The welding seam and a heat affected zone part of the barrel formed through treatment of the method can be consistent with the parent metal in deformation.

Description

technical field [0001] The invention belongs to the technical field of metal material welding, and in particular relates to a method for improving the deformation consistency of a joint and a base metal by pre-deformation after welding. Background technique [0002] Aluminum alloy has the characteristics of good corrosion resistance, high specific strength and thermal conductivity, and can maintain good mechanical properties at low temperatures. It is widely used in aerospace, rail transportation, weaponry and other fields. In the field of aerospace, the integration and lightweight of aluminum alloy closed special-shaped aerodynamic component products are getting higher and higher, and the requirements for manufacturing precision are getting higher and higher. Before the closed pneumatic components are formed, the aluminum alloy cabin to be formed must be welded and packaged by metal welding technology. During the thermoforming process, the force and heat of the sealing cyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/00
CPCB23K31/003
Inventor 任金欣孙少波张鑫王毅陈久友李宏伟李保永闫寒
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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