Silver-based brazing process of nuclear magnetic equipment

A silver-based brazing and equipment technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as physical injury, high current density, and welding difficulties, and achieve low production cost, low steam pressure, and good wettability Effect

Pending Publication Date: 2021-11-09
无锡同益环保科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The second is that argon arc welding is more harmful to the human body than electrode arc welding. The current density of argon arc welding is high,

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  • Silver-based brazing process of nuclear magnetic equipment

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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects of the invention easy to understand, the present invention will be further elaborated below in conjunction with specific illustrations.

[0022] A silver-based brazing process for nuclear magnetic equipment, comprising the following steps: step 1, selecting AgCuIn27-10 as a brazing material, and using SiC sandpaper to polish the surface of the brazing material until it is above grade 1000; step 2, using SiC sandpaper to The base metal is polished until it is more than 1000 grades, and the base metal is a copper tube and a stainless steel tube; Step 3, using acetone to ultrasonically clean the surface of the brazing material and the base metal for 3-5 minutes to remove surface impurities; Step 4, make brazing flux, use a metal container to hold QJ102 solder powder, brew it into a paste with boiling water, heat it with low heat to dissolve and mix it into brazing flux, and apply the brazing flux to ...

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Abstract

The invention discloses a silver-based brazing process of nuclear magnetic equipment. The silver-based brazing process comprises the following steps: step 1, AgCuIn27-10 is selected as a brazing material, and the surface of the brazing material is polished by using SiC abrasive paper until the surface reaches the grade of 1000 or above; step 2, SiC abrasive paper is used for polishing base metal till the grade is 1000 or above, and the base metal includes a copper pipe and a stainless steel pipe; and step 3, acetone is used for conducting ultrasonic cleaning on the surfaces of the brazing material and the base metal, the cleaning time is 3-5 min, and surface impurities are removed. The process mainly aims at the welding work of copper and stainless steel in a nuclear magnetic cooler, and has the advantages of good welding effect, safety, environmental protection, low production cost, high strength at the welding position, and excellent corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of vacuum brazing, in particular to a silver-based brazing process for nuclear magnetic equipment. Background technique [0002] In the prior art, the argon welding process is generally used to connect the components of the nuclear magnetic cooler, which mainly has the following disadvantages. First, because of the large heat-affected area of ​​argon arc welding, the workpiece often causes deformation, high hardness, and blisters after repair. , Local annealing, cracking, pinholes, wear, scratches, undercuts, or insufficient bonding force and internal stress damage. Especially in the process of repairing small defects of investment castings, it is prominent on the surface. In the field of repairing defects of precision castings, cold welding machines can be used instead of argon arc welding. Due to the small heat release of cold welding machines, the shortcomings of argon arc welding are better overcome, an...

Claims

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Application Information

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IPC IPC(8): B23K1/008B23K1/20
CPCB23K1/008B23K1/20B23K1/206
Inventor 黄南煜黄锋
Owner 无锡同益环保科技有限公司
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