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Method for welding heat dissipation base plates

A heat dissipation bottom plate and welding method technology, applied in welding equipment, non-electric welding equipment, arc welding equipment, etc., can solve problems such as unbearable welding pressure, improve and repair weld structure and performance, ensure weld quality, control The effect of welding deformation

Active Publication Date: 2014-03-26
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overlapping edge of the heat dissipation bottom plate is only about 2mm, which cannot withstand the welding pressure of friction stir welding above 2T

Method used

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  • Method for welding heat dissipation base plates
  • Method for welding heat dissipation base plates
  • Method for welding heat dissipation base plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a welding method for a heat dissipation bottom plate, comprising the following steps:

[0033] (1) Process the heat dissipation bottom plate: the heat dissipation bottom plate includes a bottom plate 1 and a cover plate 2, such as figure 1 shown. The material grade of the bottom plate 1 and the cover plate 2 is 5A06 aluminum alloy, wherein the thickness of the bottom plate 1 is 40 mm, and the total thickness of the cover plate 2 is 14 mm. Bottom plate 1 and cover plate 2 are processed by CNC milling method, and the welding seam is processed into trumpet-shaped groove 3, such as figure 2 shown. The gap of the horn-shaped groove 3 is A, the length of A is 3mm, the angle of the horn-shaped groove 3 is β, and β is 50 °, the blunt side of the horn-shaped groove 3 is B, and the length of B is 2mm.

[0034] (2) Clean the bottom plate 1 and the cover plate 2 with NaOH solution, and assemble the bottom plate 1 and the cover plate 2 on the welding too...

Embodiment 2

[0042] This embodiment provides a welding method for a heat dissipation bottom plate, comprising the following steps:

[0043](1) Process the heat dissipation bottom plate: the heat dissipation bottom plate includes a bottom plate 1 and a cover plate 2 . The material grade of the bottom plate 1 and the cover plate 2 is 5A06 aluminum alloy, wherein the thickness of the bottom plate 1 is 40 mm, and the total thickness of the cover plate 2 is 14 mm. The bottom plate 1 and the cover plate 2 are machined by numerical control milling, and the welds are processed into trumpet-shaped grooves 3 . The gap of the horn-shaped groove 3 is A, the length of A is 3mm, the angle of the horn-shaped groove 3 is β, and β is 50 °, the blunt side of the horn-shaped groove 3 is B, and the length of B is 2mm.

[0044] (2) Clean the bottom plate 1 and the cover plate 2 with NaOH solution, and assemble the bottom plate 1 and the cover plate 2 on the welding tool after cleaning. refer to image 3 , T...

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Abstract

The invention discloses a method for welding heat dissipation base plates, and belongs to the technical field of aluminum alloy welding detection. The method includes the steps that heat dissipation base plate parts are machined, the heat dissipation base plate parts and welding tools are assembled, and tack welding, continuous welding, stress annealing, shape correction, friction repair and surface anodizing are performed. According to the method, the quality of welding joints is guaranteed, and the percent of pass of the heat dissipation base plates is improved.

Description

technical field [0001] The invention belongs to the detection technical field of aluminum alloy welding, and in particular relates to a welding method of a heat dissipation bottom plate. Background technique [0002] The heat dissipation bottom plate plays a vital role in the heat dissipation of the electronic components of the mining vehicle. The heat dissipation bottom plate is welded by the bottom plate and the cover, and the cooling liquid flow channel is in the middle. Due to the high thermal conductivity of aluminum alloy, the heat input is 2 to 4 times larger than that of steel at the same welding speed. Pores and thermal cracks are prone to occur. However, the welding thickness of the heat dissipation bottom plate is large, and the weld seam is dense, and it needs multi-layer and multi-pass welding to form, so that Al is easy to be produced in the weld seam. 2 o 3 This leads to welding seam inclusions and reduces the strength of the weld seam. Due to the above r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K9/16B23K20/12
CPCB23K20/122B23K28/02B23P15/26
Inventor 沈明明李宝华唐众民周宏图鄢江武罗安鑫
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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