A copper-based solder that can accurately control the amount of flux and has a good protection effect on the brazing seam

A copper-based brazing material, precise control technology, applied in the direction of manufacturing tools, welding/cutting media/materials, metal processing equipment, etc., can solve the problems of hindering the plastic deformation of the brazing material, increasing difficulty, polluting the environment, etc., to promote flow non-toxicity, good removability, and large active area
CN113102915BActive Publication Date: 2022-04-12ZHENGZHOU UNIV
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Publication Date
2022-04-12

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention belongs to the field of welding materials, in particular to a copper-based solder that can accurately control the amount of flux and has a good protective effect on the brazing seam, including a circular or oval copper-based solder inner wire and a protective film. The protective film includes: Zinc phosphide powder 10%‑12%, kyanite powder 5%‑7%, glass fiber 3%‑5%, nano silicon dioxide powder 2.5%‑3.5%, boric anhydride powder 10%‑12%, potassium fluoroborate Powder 20%-25%, the above substances are treated with coupling agent, there is also 5.5%-6.5% curing agent, and the balance is epoxy resin. In the preparation process of the present invention, there will be no wire breakage, and the solder has strong wettability during brazing, which can effectively fill the gaps between the workpieces to be welded; the amount of brazing flux can be precisely controlled during brazing, which solves the problem of brazing Insufficient dosage or too much flux residue after brazing; the protection effect on the brazing seam is good during brazing and the protective layer is easy to remove, the brazing seam has fewer defects and high strength.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of welding materials, in particular to a copper-based solder that can precisely control the amount of flux and has a good protective effect on brazing seams. Background technique

[0002] With the rapid development of industrial technologies such as automobiles, microelectronics, electrical appliances, tools, refrigeration, exploration, tunneling, aerospace, etc., brazing technology has been widely used in these fields due to its unique advantages. For copper alloys, copper-based solder is required for brazing. Generally, copper-based solder is used in conjunction with flux. Flux is used to remove the oxide film on the surface of the base metal and protect the brazed joint from oxidation.

[0003] At present, there are two types of copper-based solders commonly used: solid solder and cored solder. During the preparation and use, there are the following technical problems:

[0004] (1) When using solid coppe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More