Brazing welding wire, brazing welding wire forming method and brazing welding wire forming die

Abstract

The invention relates to a brazing welding wire, a brazing welding wire forming method and a brazing welding wire forming die. The brazing welding wire comprises a brazing filler metal pipe with an inner cavity; and brazing flux filling the inner cavity of the brazing filler metal pipe, wherein a groove is formed in the peripheral face of the brazing filler metal pipe and extends along the axis of the brazing filler metal pipe or spirally extends around the axis of the brazing filler metal pipe. The brazing welding wire forming die comprises a die body, wherein a forming cavity is formed in the die body; a protrusion is arranged on the inner wall of the forming cavity, and when a brazing welding wire passes through the forming die, the protrusion is used for forming the groove in the peripheral face of the brazing filler metal pipe. The brazing welding wire forming method comprises the following steps: enabling a brazing filler metal pipe to pass through a forming mold; and forming a groove in the peripheral face of the brazing filler metal pipe through a protrusion arranged on the inner wall of a forming cavity of the forming die, wherein the groove extends along the axis of the brazing filler metal pipe or spirally extends around the axis of the brazing filler metal pipe. According to the scheme, the brazing flux melting rate of the brazing welding wire can be increased, the brazing flow laying time is shortened, and the welding quality is improved.

Description

technical field [0001] The invention relates to a brazing wire, a brazing wire molding method and a brazing wire molding die. Background technique [0002] Brazing wire and flux are often used in the brazing process. After the flux is melted, it can be spread on the surface of the workpiece to remove the oxide film on the surface of the workpiece, thereby improving the quality of brazing. [0003] For example, in the glasses industry, a pair of metal frames usually consists of 20 to 30 parts, mainly including glasses legs, frames, bridges, hinges, locking blocks, nose pads and screws, etc. Brazing is a traditional method of frames. connection method. At present, the annual output value of my country's glasses industry is high, and the domestic and foreign markets have great demand, but most of the products are still mainly made of low-grade materials such as brass and zinc white copper. With the advancement of technology, it is an important research direction for material ...

AI Technical Summary

Problems solved by technology

[0005] However, during brazing, the heat used to melt the flux needs to be transferred from the outside to the inside through the hollow tube, the melting rate of the flux is slow, and it takes a long time for the flux to spread to the surface of the workpiece to remove the oxide film of the workpiece, which affects the welding quality

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