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Flux-cored brazing filler metal, preparation method thereof, and device for preparing flux-cored brazing filler metal
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A technology of brazing material and flux core, applied in the field of flux core brazing filler metal and its preparation, and the device for preparing flux core brazing filler metal, which can solve problems such as poor product quality stability, improve quality stability, and reduce void core rate , easy to control the effect
Active Publication Date: 2022-02-01
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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[0008] The first purpose of the present invention is to provide a preparation method of flux core brazing material, to solve the technical problem of poor product quality stability existing in the preparation method in the prior art
Method used
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[0071] figure 1 Schematic diagram of the structure of the device for preparing flux core brazing material provided by the embodiment of the present invention. Such as figure 1 As shown, the device for preparing flux core brazing material provided in this embodiment includes a conveying unit, a rolling unit, a powder removing unit, a flux filling unit and a drying unit 6 .
[0072] The conveying unit includes an unwinding device 1, a winding device 7 and a set of guide rollers; the rolling unit includes a rolling roller 2 and a pressing roller 4; the flux filling unit includes a stocker 5, the The side wall of the stocker 5 is provided with a wire inlet 51 and a wire outlet 52 .
[0073] The unwinding equipment 1, rolling roll 2, pressing roll 4, wire inlet 51, guide roller group, wire outlet 52, drying unit 6 and winding equipment 7 are arranged in sequence; the powder lowering unit 3 is arranged on Between rolling roll 2 and pressing roll 4.
[0074] Further, the set of g...
Embodiment 1
[0086] The present embodiment provides the preparation method of flux core brazing material, comprises the following steps:
[0087] (1) The BAg49Cu16Zn23Ni4.5Mn7.5 brazing filler metal strip that is 8mm in width and 0.22mm in thickness is sent to rolling rolls by unwinding equipment, and formed U-shaped brazing filler metal strip through rolling roll rolling;
[0088] (2) The U-shaped solder belt is transported to the powder lowering unit, and the solid flux QJ102 is added to the U-shaped solder belt according to the ratio that the flux accounts for the mass ratio of the flux and the U-shaped solder belt to 10%; The U-shaped brazing filler metal belt of the agent is continuously conveyed to the pressing roller for pressing treatment to form a butt joint flux core brazing filler metal;
[0089] (3) The butt joint flux core brazing material is sent into the stocker filled with liquid brazing flux QJ102 through the wire inlet, and is guided by the guide roller group to immerse t...
Embodiment 2
[0094] The present embodiment refers to the preparation method of Example 1, the difference is only in:
[0095] The brazing strip is BAg30CuZnSn, and the brazing flux is QJ101.
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Abstract
The invention relates to the technical field of brazing materials, in particular to a flux-cored brazing material, a preparation method thereof and a device for preparing the flux-cored brazing material. The preparation method of the flux-cored brazing filler metal comprises the following steps: after replenishing the liquid flux in the butt-joint flux-core brazing filler metal, drying treatment is carried out; wherein, the preparation of the butt-joint flux-core brazing filler metal comprises: After the U-shaped solder strip is filled with solid flux, it is compressed to form the butt joint flux core brazing material. In the present invention, after the butt joint flux cored brazing material is obtained, the butt joint flux cored brazing material is filled with liquid flux, so as to realize the replenishment of the core part of the flux cored brazing material with little or no flux , greatly reducing the hollow rate of the flux-cored brazing material, and improving the quality stability of the prepared flux-cored brazing material product. The device of the invention can be used for continuous production of flux core brazing material, has simple structure and setting, is easy to regulate and control, and simultaneously has high production efficiency.
Description
technical field [0001] The invention relates to the technical field of brazing materials, in particular to a flux-cored brazing material, a preparation method thereof and a device for preparing the flux-cored brazing material. Background technique [0002] Silver solder has a moderate melting point, good welding processability, good strength, toughness, electrical conductivity, thermal conductivity and corrosion resistance, and is the most widely used type of hard solder. [0003] The traditional brazing process is to use wire or strip silver brazing material, or pre-coat the brazing flux on the workpiece before heating. , Repair or even scrap, will cause the waste of silver solder and raw materials, and increase the manufacturing cost. In addition, the process of solder fluxing or pre-fluxing adds a pre-soldering operation, increases process and operation time, and adds another variable in the brazing process, thereby affecting the consistency and quality of the soldered p...
Claims
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Application Information
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