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A process method and fixture for reducing defects in vacuum brazing of 6061 aluminum alloy

A process method and technology of aluminum alloy, applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., can solve the problems of low brazing quality, many defects, low qualification rate, etc., and achieve wide welding area and heat transfer speed. Slow, less polluting effect

Active Publication Date: 2019-12-20
贵州永红换热冷却技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brazing quality of the products produced by this method is not high, there are many defects, and the qualified rate is very low, and it is not yet capable of producing such high-quality cold plates.

Method used

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  • A process method and fixture for reducing defects in vacuum brazing of 6061 aluminum alloy
  • A process method and fixture for reducing defects in vacuum brazing of 6061 aluminum alloy
  • A process method and fixture for reducing defects in vacuum brazing of 6061 aluminum alloy

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Embodiment Construction

[0049] like figure 1 As shown, it is a fixture used for vacuum brazing of 6061 aluminum alloy cold plate. Figure 10-12 , Figure 23 ), a top cover 2 (such as Figure 10-12 , Figure 22), an upper stainless steel plate 4 (such as Figures 13 to 15 ), a lower stainless steel plate 6 (such as Figures 13 to 15 ), a backing plate 3 (such as Figure 16 ), 20 poles 7 (such as Figure 17 and Figure 18), and 32 springs 5 ​​(such as Figure 24 , the springs are symmetrically distributed along the length and width of the cold plate, and the spring spacing is between 18 and 20 cm).

[0050] 20 vertical rods 7 link and fix the upper and lower cover plates by threads. When working, the upper cover plate 2 is pressed down by a hydraulic press, and after being pressed down to the specified pressure, the 20 vertical rods 7 are pressed according to the figure 1 The sequence shown in (numbers circled in the figure, ie ), use a torque wrench to tighten (i.e. according to Figu...

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Abstract

The invention discloses a process method for reducing vacuum brazing defects of a 6061 aluminum alloy and a clamp. The clamp comprises an upper cover plate (2) and a lower cover plate (1) connected through a vertical rod (7); an upper stainless steel plate (4), a spring (5) and a gasket (3) are successively arranged below the upper cover plate (2); and a lower stainless steel plate (6) is arrangedabove the lower cover plate (1). According to the process method and clamp disclosed by the invention, curves of temperature-raising, insulating and cooling processes are adjusted during brazing. Thecold plates can be domesticated by adopting the processing method and the clamp, the vacuum brazing defects of the 6061 aluminum alloy are reduced greatly, the product quality is improved, and meanwhile the international image of an enterprise is enhanced.

Description

technical field [0001] The invention relates to a vacuum brazing process method of a 6061 aluminum alloy cold plate for medical use, in particular to a special vacuum brazing temperature curve of a 6061 aluminum alloy cold plate and a workpiece assembly fixture. Background technique [0002] As a product developed in conjunction with medical CT machines, the cold plate is mainly responsible for the heat transfer of high-power electronic components in the CT and rotating parts, and rotates at high speed with the system. Due to the high cost of the system, the reliability of the cold plate The requirements are very high. The cold plate is an important component of the medical CT cooling system. It has a large volume and a complex structure. After brazing, the welding quality requirements are high. In the rest of the range, the defect length is not allowed to exceed 30mm; under the metallographic conditions of the brazing seam, defects such as small holes and corrosion are not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K3/00B23K1/008B23K3/08B23K37/04
Inventor 朱单单李新运冯学文彭亮
Owner 贵州永红换热冷却技术有限公司
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