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Method for solving APM roof welding recess

A car roof and profile technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve problems such as weakened weld bearing capacity, large weld deformation, and unqualified products, so as to reduce unqualified products and outline precise effect

Pending Publication Date: 2021-04-20
安徽雷尔伟交通装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the process of using friction stir welding of APM roof, there is a common phenomenon of weld depression, which will have the following effects on the APM roof: (1) the thinning of the base metal section; (2) the weakening of the weld bearing capacity; (3) the welding seam The appearance is sunken beyond the standard, and the product has the risk of being unqualified; (4) The weld deformation is large, and the product radian does not meet the requirements

Method used

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  • Method for solving APM roof welding recess
  • Method for solving APM roof welding recess
  • Method for solving APM roof welding recess

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Clean the groove of the roof profile to be welded, and use mechanical grinding and cleaning;

[0048] (2) Put the roof profile on the tooling for assembly, control the alignment gap, misalignment, and clamp the tooling; the alignment gap of the roof profile is set to 0-0.5mm;

[0049] (3) Select the stirring head for roof welding, and weld according to the following parameters;

[0050] (4) Place the welded roof profile on the tooling and keep it in a clamped state for 4 to 5 hours.

[0051] Among them, the needle length of the stirring head is 3.3mm, the shaft shoulder diameter is 16mm, the rotating speed is 1400r / min, the traveling speed is 1000mm / min, the inclination angle is 2.5°, and the pressing amount is 0.2mm. After welding, the measured roof welding depression is 0.1mm.

Embodiment 2

[0053] (1) Clean the groove of the roof profile to be welded, and use mechanical grinding and cleaning;

[0054] (2) Put the roof profile on the tooling for assembly, control the alignment gap, misalignment, and clamp the tooling; the alignment gap of the roof profile is set to 0-0.5mm;

[0055] (3) Select the stirring head for roof welding, and weld according to the following parameters;

[0056] (4) Place the welded roof profile on the tooling and keep it in a clamped state for 4 to 5 hours.

[0057] Among them, the needle length of the stirring head is 3.5mm, the shaft shoulder diameter is 18mm, the rotating speed is 1400r / min, the traveling speed is 900mm / min, the inclination angle is 2.5°, and the pressing amount is 0.1mm. After welding, the measured roof welding depression is 0.1mm.

Embodiment 3

[0059] (1) Clean the groove of the roof profile to be welded, and use mechanical grinding and cleaning;

[0060] (2) Put the roof profile on the tooling for assembly, control the alignment gap, misalignment, and clamp the tooling; the alignment gap of the roof profile is set to 0-0.5mm;

[0061](3) Select the stirring head for roof welding, and weld according to the following parameters;

[0062] (4) Place the welded roof profile on the tooling and keep it in a clamped state for 4 to 5 hours.

[0063] Among them, the needle length of the stirring head is 3.3mm, the shaft shoulder diameter is 18mm, the rotating speed is 1600r / min, the traveling speed is 1000mm / min, the inclination angle is 2.5°, and the pressing amount is 0.2mm. After welding, the measured roof welding depression is 0.2mm.

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Abstract

The invention discloses a method for solving an APM roof welding recess. The method comprises the steps: cleaning a to-be-welded groove of a roof profile, and carrying out mechanical grinding and cleaning; assembling the roof profile on a tool, and controlling the assembling gap, the misalignment, and clamping the tool, specifically, the assembling gap of the roof profile is set to be 0-0.5 mm; selecting a stirring head for roof welding, and welding according to parameters, specifically, the pressing amount of the stirring head is 0.1-0.2 mm; and placing the welded roof profile on the tool, and keeping a clamping state for 4-5 hours. According to the technological method, the technology for solving the APM roof welding recess is determined, the surface welding recess of a roof welded based on the technological parameters can meet the standard requirements, powerful guarantee is provided for batch production of roofs, and the risks that products are unqualified and scrapped are reduced.

Description

technical field [0001] The invention relates to a process and method of butt joint friction stir welding of aluminum alloy profiles, in particular to a method for solving APM vehicle roof welding depressions, and belongs to the technical field of friction stir welding. Background technique [0002] Friction stir welding technology is widely used in the production process of APM. Friction stir welding is a new type of connection technology. It relies on the friction between the stirring head and the workpiece to generate heat, so that the weld area is heated to form a plastic flow state, and through the stirring of the stirring needle function to achieve the purpose of connection. The welding temperature of friction stir welding is 07~0.9 times of the melting point of aluminum alloy (about 470~560℃), the heat input is much smaller than that of fusion welding, and a small temperature gradient can be formed in the welding joint area, which reduces welding deformation and greatl...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/24
Inventor 王冲陆鹏杰
Owner 安徽雷尔伟交通装备有限公司