Silver-based flux-cored wire and manufacturing method thereof

Abstract

Provided are a silver-based flux-cored wire and a manufacturing method thereof. The manufacturing method of the silver-based flux-cored wire includes the following steps: 1 placing soldering flux powder in a soldering flux jar, heating up to 580-600 DEG C, and smelting soldering flux to liquid state for use; 2 smelting proportioned silver, copper and zinc to be cast to bars, then turning the cast bars to remove scale, and cutting the cast bars to ingots for use; 3 enabling a flux-cored wire extrusion device to be heated to 520-530 DEG C; 4 placing the ingots in a muffle furnace for preheating with the preheating temperature at 560-580 DEG C; 5 placing the preheated ingots in a mould drum of the flux-cored wire extrusion device, starting a press of the flux-cored wire extrusion device to extrude an extrusion rod into an upper mould drum, and enabling alloy to be extruded into a material leading cone, enter an upper mould, a mould core and a lower mould through split-flow and then form a hollow pipe; and 6 opening an air inlet valve of the soldering flux jar, pressurizing, and enabling the liquid-state soldering flux in the soldering flux jar to be pressed into a feeding port to enter the mould core and be injected to the alloy hollow pipe to be solidified after heat dissipation. Thus, the silver-based flux-cored wire is produced. Compared with the prior art, the silver-based flux-cored wire and the manufacturing method thereof have the advantages of being simple in soldering process, high in production efficiency, low in cost, easy in controlling use level of soldering flux accurately, capable of meeting the requirement for alloy welding temperature matching, easy in cleaning after welding, good in welding performance, not prone to moisture absorption of solder wires, and long in storage time of solder wires.

Description

Technical field [0001] The invention relates to a welding wire and a manufacturing method thereof. Background technique [0002] The existing brazing process generally adopts heating and dipping the flux for use. This kind of brazing process is complicated, has low production efficiency, high cost, and is not easy to accurately control the amount of flux. Summary of the invention [0003] The purpose of the present invention is to adopt a silver-based flux-cored welding wire with simple brazing process, high production efficiency, low cost, easy and accurate control of the amount of flux, and a manufacturing method. [0004] The present invention is realized in this way, including a tubular welding wire made of silver, copper, and zinc alloy, and a flux filled in the wire tube. The amount of flux is 10-15wt%, and the amount of silver, copper, and zinc alloy is 85-90wt%. The silver content in silver, copper, and zinc alloys is 15-65% by weight, copper content is 15-65% by weight, an...

AI Technical Summary

Problems solved by technology

[0002] The existing brazing process is generally used by dipping flux after heating. This kind of brazing process is complex, with low production efficiency and high cost, and it is not easy to accurately control the amount of flux used.

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