Copper-phosphorus welding ring, and preparation method and application thereof

A welding ring and copper-phosphorus technology, which is applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of steel brazing seam strength and cost can not be taken into account, so as to broaden the scope of use, improve brazing seam connection strength, and convenient operation Effect

Inactive Publication Date: 2020-10-13
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first purpose of the present invention is to provide a copper-phosphorus welding ring to solve the technical problem that the strength and cost of the steel brazing seam in the prior art cannot be balanced

Method used

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  • Copper-phosphorus welding ring, and preparation method and application thereof
  • Copper-phosphorus welding ring, and preparation method and application thereof
  • Copper-phosphorus welding ring, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] This embodiment provides a copper-phosphorus welding ring and a preparation method thereof, the structure of the copper-phosphorus welding ring is as follows figure 1 As shown, the copper-phosphorus welding ring includes 70 parts of copper-phosphorus solder, 10 parts of flux and 20 parts of anhydrous copper sulfate in parts by weight.

[0073] The preparation method of the above-mentioned copper-phosphorus welding ring comprises the following steps:

[0074] (1) Adopt atomization method to prepare powdery copper-phosphorus brazing filler metal according to following proportioning, pass the obtained copper-phosphorus brazing filler metal through 100 mesh sieves, obtain material A; Wherein, copper-phosphorus brazing filler metal comprises copper 88 by mass percentage %, phosphorus 7%, silver 5%;

[0075] (2) adopt mechanical mixing method to prepare powdery brazing flux by following proportioning, the powdery brazing flux that is obtained is crossed 100 mesh sieves, obta...

Embodiment 2

[0080] This embodiment provides a copper-phosphorus welding ring and a preparation method thereof, the structure of the copper-phosphorus welding ring is as follows figure 2 As shown, the copper-phosphorus welding ring includes 80 parts by weight of copper-phosphorus solder, 15 parts of flux and 5 parts of anhydrous copper sulfate.

[0081] The preparation method of the above-mentioned copper-phosphorus welding ring comprises the following steps:

[0082] (1) Adopt atomization method to prepare powdery copper-phosphorus brazing filler metal according to following proportioning, pass the obtained copper-phosphorus brazing filler metal through 100 mesh sieves, obtain material A; Wherein, copper-phosphorus brazing filler metal comprises copper 88 by mass percentage %, phosphorus 7%, silver 5%;

[0083] (2) adopt mechanical mixing method to prepare powdery brazing flux by following proportioning, the powdery brazing flux that is obtained is crossed 100 mesh sieves, obtains mater...

Embodiment 3

[0088] This embodiment provides a copper-phosphorus welding ring and a preparation method thereof, the structure of the copper-phosphorus welding ring is as follows figure 1 As shown, the copper-phosphorus welding ring includes 75 parts of copper-phosphorus solder, 12 parts of flux and 13 parts of anhydrous copper sulfate in parts by weight.

[0089] The preparation method of the above-mentioned copper-phosphorus welding ring comprises the following steps:

[0090] (1) Adopt atomization method to prepare powdery copper-phosphorus brazing filler metal according to following proportioning, pass the obtained copper-phosphorus brazing filler metal through 100 mesh sieves, obtain material A; Wherein, copper-phosphorus brazing filler metal comprises copper 88 by mass percentage %, phosphorus 7%, silver 5%;

[0091](2) adopt mechanical mixing method to prepare powdery brazing flux by following proportioning, the powdery brazing flux that is obtained is crossed 100 mesh sieves, obtai...

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Abstract

The invention relates to the technical field of metal brazing materials, in particular to a copper-phosphorus welding ring and a preparation method thereof. The copper-phosphorus welding ring comprises a welding ring body and reaction layers arranged on the end face of one side or the end faces of the two sides of the welding ring body. The welding ring body comprises copper-phosphorus brazing filler metal and a brazing flux. Each reaction layer comprises copper sulfate. According to the preformed copper-phosphorus welding ring provided by the invention, the copper sulfate reaction layers arearranged on the end face of one side or the end faces of the two sides of the welding ring body; based on contact reaction, the copper sulfate has a reaction with a copper base body first in the heating process to generate a layer of copper on the surface of the copper base body, and P in the copper-phosphorus brazing filler metal is effectively stopped from having a reaction with Fe and generating fragile compounds. Accordingly, the connecting strength of brazing seams is improved.

Description

technical field [0001] The invention relates to the technical field of metal brazing materials, in particular to a copper-phosphorus welding ring and its preparation method and application. Background technique [0002] At present, silver-based solder is mainly used for brazing carbon steel pipes, and its silver content is generally above 25%. Due to the difficulty in recycling the solder, high-silver solder not only consumes a large amount of silver resources, but also has a high cost. In order to reduce costs, it is necessary to develop low-silver or silver-free solders to replace high-silver solders. Copper-phosphorus solder is a widely used copper-based solder, which has the same strength and heat resistance as commonly used silver solder, but the P element in the copper-phosphorus solder will interact with the P element in the base metal during the brazing process. Fe reacts to form a layer of brittle compounds at the interface, resulting in the inability to form an ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/14B23K35/30B23K35/363
CPCB23K35/0222B23K35/302B23K35/3601B23K35/362
Inventor 董显张冠星张雷董宏伟常云峰薛行雁
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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