Preparation method of brass flux-cored welding ring
A technology of brass and welding rings, applied in welding equipment, welding media, manufacturing tools, etc., can solve problems such as fast flux melting speed, increased operation time, and inability to weld, so as to improve brazing efficiency and quality, and achieve good welding The effect of high performance and productivity
Active Publication Date: 2016-08-24
HANGZHOU HUAGUANG ADVANCED WELDING MATERIALS CO LTD
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Problems solved by technology
[0002] Brass brazing filler metal can be used for brazing connection of steel and steel, copper and steel. Wetting and spreading, not solderable
The coating of flux will increase the operation time, and it is not conducive to the needs of automatic production
At the same time, when used in high-frequency welding, due to the high heating efficiency of high-frequency welding and the fast melting speed of the flux, the skin structure design of the common flux-cored wire cannot ensure that the flux flows out to the base metal in time, and the flux cannot dissolve the base metal. The oxide layer on the surface can easily lead to broken soldering, and the solder cannot be wetted and spread, which affects practical application
Method used
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[0012] see figure 1 , the preparation method of the brass flux-cored welding ring of the embodiment of the present invention: the brass solder 1 is prepared into a thin strip, and the surface dirt and oxidation are removed through cleaning, and the U-shaped strip with the upward opening is formed by rolling and deforming by a roll. After the shaped brass flux 2 vibrates from the funnel to the conveyor belt, the brass flux 2 is transferred to the U-shaped belt through the conveyor belt (the brass flux 2 can be placed in a transparent funnel such as a visible glass funnel to visually Check whether there is any powder, regularly add the required powder in time) and then roll and deform, so that the open end of the U-shaped belt is butted to form a tubular solder, and then rolled and flattened (press the tubular solder inwards and downwards, so that the already The butted U-shaped belt with its open end basically closed) forms a flat welding wire with a butt joint 3, and the gap b...
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The invention relates to a preparation method of a brass flux-cored welding ring. The preparation method comprises the following steps of preparing a thin belt from a brass solder, enabling the thin belt to form an upwards-opened U-shaped belt through coiled deformation by a roller, transmitting a brass soldering flux to a gap between the U-shaped belt and a solid brass welding wire, enabling the open ends of the U-shaped belt to be abutted to form a tubular welding flux through the coiled deformation of the U-shaped belt by the roller, enabling the U-shaped belt to form a flat welding wire with an abutment joint through the rolling and flattening of the tubular welding flux, cleaning the surface of the flat welding wire through a brush wheel and a hairbrush, and then preparing to be molded. The width of the abutting gap in the cross section of the brass flux-cored welding ring is 0.1 to 2.0mm. The brass soldering flux is composed of comprises boric acid, borax and a fluoride, the activity temperature of the brass soldering flux is 750 to 1050 DEG C, and the specific gravity of the soldering flux to the welding ring is 10 to 25%. According to the preparation method, the brazing efficiency and quality are improved, and the preparation method has the advantages of reliable soldering-flux quality, stable content, good welding performance, high production efficiency and simple process.
Description
technical field [0001] The invention relates to a preparation method of a brass flux-cored welding ring. The brass flux-cored welding ring is especially suitable for use in high-frequency brazing equipment, and can also be used for flame brazing, and can be widely used in refrigeration, machinery and other industries. In brazing, it belongs to a new type of hard brazing ring. Background technique [0002] Brass brazing filler metal can be used for brazing connection of steel and steel, copper and steel. Wet and spread, not weldable. However, the coating of flux will increase the operating time and is not conducive to the needs of automatic production. At the same time, when used in high-frequency welding, due to the high heating efficiency of high-frequency welding and the fast melting speed of the flux, the skin structure design of the common flux-cored wire cannot ensure that the flux flows out to the base metal in time, and the flux cannot dissolve the base metal. The ...
Claims
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IPC IPC(8): B23K35/40B23K35/36
CPCB23K35/3605B23K35/3606B23K35/40
Inventor 王晓蓉余丁坤陈融吴剑
Owner HANGZHOU HUAGUANG ADVANCED WELDING MATERIALS CO LTD