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Seamed flux-cored silver welding wire and preparation method thereof

A silver soldering and flux core technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of inaccurate control of the amount of added brazing, waste of resources, and product failure rate, so as to avoid the health of operators and damage to surrounding areas Environmental hazards, saving labor costs, and improving welding efficiency

Inactive Publication Date: 2015-07-08
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

Even in countries with highly developed modern manufacturing industries, it is difficult to automate this process to replace manual welding
In the brazing process, due to human operation, the amount of brazing added cannot be precisely controlled, and the addition of excessive flux will cause harm to the health of the operator and the surrounding environment.
With the increase of brazing cost control in the modern manufacturing industry, the labor cost required for manual welding, the product failure rate caused by manual operation, and the waste of resources caused by the inability to accurately control the amount of silver solder are all problems that need to be solved urgently
The increasing attention of the outside world to corporate environmental responsibility has also limited the promotion and application of brazing technology to a certain extent

Method used

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  • Seamed flux-cored silver welding wire and preparation method thereof

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preparation example Construction

[0020] The preparation method of the present invention is as follows:

[0021] Preparation of flux powder: Take dehydrated potassium fluoride, potassium fluoroborate, boric anhydride, borax, and boric acid according to the mass fraction ratio, mix them evenly, dry them in a low vacuum oven at 100°C~130°C for 60min~300min, and cool them for later use ;

[0022] Preparation of silver-based brazing material: take silver, copper, zinc, cadmium, nickel, and manganese in the form of simple substance or intermediate alloy according to the mass fraction ratio, and make it through smelting, extrusion, rolling, slitting, ultrasonic cleaning, drying, and splicing. The required length of the solder strip, and then through the rolling ∪-shaped groove, adding flux powder, jointing, layer winding, and packaging processes, to obtain the required size of the flux-cored silver wire.

[0023] More specifically: the flux powder is prepared flux; the silver, copper, zinc, cadmium, nickel, and man...

Embodiment 1

[0026] Prepare Φ1.0mm wall thickness 0.1mm seamed flux-cored silver welding wire, the brazing filler metal components and their weight fractions are: silver Ag: 25%, copper Cu: 30%, zinc Zn: 27.5%, Cd: 17.5%; The flux powder includes the main raw materials in the following mass fraction ratios: potassium fluoride: 42%, potassium fluoroborate: 23%, boric anhydride: 35%; wherein the flux powder weight is the finished seamed flux cored silver wire 18% of the total mass of the bar.

Embodiment 2

[0028] Prepare Φ1.5mm wall thickness 0.2mm seamed flux-cored silver welding wire, its components and weight fractions are: silver Ag: 40%, copper Cu: 30%, zinc Zn: 28%, nickel Ni: 2%; The flux powder includes the main raw materials in the following mass fraction ratios: potassium fluoride: 42%, potassium fluoroborate: 23%, boric anhydride: 35%; the weight of the flux powder described herein is the finished seamed flux-cored silver wire rod 12% of the total mass.

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Abstract

The invention provides a seamed flux-cored silver welding wire and a preparation method thereof and relates to welding materials for metal welding and welding material manufacturing process. The welding wire comprises a brazing alloy tube and brazing flux powder, wherein the brazing alloy tube is prepared by band type silver-based brazing alloy and provided with a longitudinal butt joint; the brazing alloy tube is filled with the brazing flux powder. The preparation method comprises the first step of preparing the brazing flux powder, the second step of evenly mixing all ingredients according to the mass fraction ratio, drying the mixture and cooling the mixture for standby application, the third step of preparing silver-based brazing alloy, and the fourth step of taking all ingredients according to the mass fraction ratio and conducting smelting, extruding, rolling, slitting, ultrasonic cleaning and drying. Since brazing flux does not needed to be added in the welding process, the welding process is simplified, and the welding efficiency is improved. Through accurate control over the proportion of the brazing flux and the brazing alloy, the cost can be lowered, and the ambient environment can be improved.

Description

technical field [0001] The invention relates to a welding material for metal welding and a manufacturing method thereof, in particular to a seamed flux-cored silver welding wire and a preparation method thereof. Background technique [0002] In the past 30 years, my country's urbanization process has continued to advance, and people have migrated from rural areas to cities, and the demand for supporting urbanized living materials has increased rapidly. For example, the demand for white household appliances represented by refrigerators and air conditioners and black household appliances represented by computers, DVDs and stereos continues to rise, and superhard tools for manufacturing, building decoration materials and their manufacturing industries are also booming. [0003] Brazing technology plays an important role in these emerging industries. Among the brazing materials that play an important role in brazing technology, silver-based solders (especially AgCuZnCd series a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40B23K35/363B23K35/368
CPCB23K35/3006B23K35/362B23K35/368B23K35/406B23K2035/408
Inventor 龙伟民李秀朋朱坤张雷张青科孙华为王星星李永于新泉鲍丽马力
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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