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Coating brazing filler metal and preparation method and application thereof

A technology of brazing filler metal and coating, applied in the field of coating filler metal and its preparation, can solve the problems of high energy utilization rate, fast melting speed, long heating time, etc., and achieve high energy utilization rate, fast melting speed and easy operation. Effect

Active Publication Date: 2021-06-04
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

[0006] An object of the present invention is to provide a sheathed solder with a hole structure to solve the problems of long heating time and high energy consumption during welding of the existing sheathed solder. By setting a flux layer with a hole structure, the welding process The melting speed is fast and the energy utilization rate is high, which can reduce the welding time, speed up the production cycle, and improve the production efficiency

Method used

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  • Coating brazing filler metal and preparation method and application thereof
  • Coating brazing filler metal and preparation method and application thereof
  • Coating brazing filler metal and preparation method and application thereof

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preparation example Construction

[0064] According to another aspect of the present invention, the present invention also relates to the preparation method of the above-mentioned coated solder, comprising the following steps:

[0065] Dip the brazing material inner core into the mixed molten liquid of the brazing flux and the pore-forming agent, take it out and cool it.

[0066] The coated solder of the present invention forms a pore-structured flux layer by adding a pore-forming agent to the flux. During the welding process, the flux has a fast melting speed and a high energy utilization rate, which can reduce welding time, speed up production tempo, and improve production efficiency.

[0067] The preparation method of the traditional Chinese medicine sheathed brazing filler metal of the present invention is simple and convenient to operate, does not need to add additional binder, just can realize that brazing flux adheres to the brazing filler metal surface, forms uniform brazing flux film; The molten flux i...

Embodiment 1

[0087] A preparation method of covered brazing material, comprising the following steps:

[0088] (a) Prepare the BAg45CuZn brazing material inner core by smelting, extrusion, rolling / drawing, annealing and other processing methods into a main body wound into a spiral ring with a hollow structure;

[0089] (b) Put the brazing flux, pore-forming agent and pore-forming agent in a stirrer, stir for 1.5 hours, take it out and place it in a container of ceramic material or graphite material, and heat it at 250°C to ensure that the braze The agent is in the viscous state of partial melting to avoid excessive gas escape; the pore-forming agent is ammonium bicarbonate, and the brazing flux is a mixture of fluoroborate, fluoride and boron gangue, and the fluoroborate , the mass ratio of fluoride, boron gangue and ammonium bicarbonate is 33:19:28:20;

[0090] (c) Place the inner core of the brazing material in the flux melt, and require the molten brazing flux to be submerged in the br...

Embodiment 2

[0095] A preparation method of covered brazing material, comprising the following steps:

[0096] (a) Prepare the BCu58ZnMn solder inner core into a ring shape with a hollow structure by using smelting, extrusion, rolling / drawing, annealing and other processing methods;

[0097] (b) Put the brazing flux, pore-forming agent and pore-forming agent in a stirrer, stir for 2 hours, take it out and place it in a container made of ceramic material or graphite material, and heat it at 350°C to ensure that the brazing flux Be in the viscous state of partial melting, avoid too much escape of gas; The pore-forming agent is polyethylene glycol, phenolic resin, and the brazing flux is a mixture of borate, boric acid and boron gangue, and the borate , boric acid and boron gangue, polyethylene glycol, the mass ratio of phenolic resin is 35:12:23:5:25;

[0098] (c) Place the brazing material inner core in the brazing flux melt, require the molten brazing flux to be submerged in the brazing f...

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Abstract

The invention relates to the technical field of coating brazing filler metal, in particular to coating brazing filler metal and a preparation method and application thereof. The coating brazing filler metal comprises a brazing filler metal inner core and a brazing flux layer wrapping the outer surface of the brazing filler metal inner core, the brazing filler metal inner core is of a hollow structure or a solid structure, the brazing flux layer is provided with a hole structure, the cross section area of the solid structure is rectangular or circular, and the hollow structure comprises an annular structure or a spiral annular structure formed by winding brazing filler metal wires. Through cooperation of the brazing filler metal and the hole structure brazing flux layer and arrangement of a specific structure, the melting speed is high, and the brazing efficiency is high; and the effects that the coating brazing filler metal is high in adhesive force, small in coating loss in the transportation process, convenient to store, stable in welding performance and the like can be achieved without adding a binder.

Description

technical field [0001] The invention relates to the technical field of sheathed brazing material, in particular, to a sheathed brazing material and its preparation method and application. Background technique [0002] Flux is the flux used in the brazing process, used in conjunction with brazing material, is an important substance to ensure the smooth progress of the brazing process and obtain a dense joint. The role of the flux is to remove oxides on the surface of the molten solder and the base metal, protect the surface of the solder and the base metal from oxidation, improve the wettability of the solder to the base metal, promote the activation of the interface, and make the brazing process go smoothly. Flux and solder and reasonable selection play a key role in the quality of brazed joints. [0003] In the traditional brazing process, brazing material and flux are used separately, mainly by manual application on the welding part. In order to ensure the quality of braz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/14B23K35/20B23K35/28B23K35/30B23K35/365B23K35/40
CPCB23K35/0227B23K35/3006B23K35/302B23K35/288B23K35/3606B23K35/3605B23K35/361B23K35/404
Inventor 龙伟民刘晓芳董显张冠星常云峰董宏伟薛行雁纠永涛
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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