Brazing filler metal for brazing stainless steel metallic mirrors and process for manufacturing brazing filler metal

Abstract

The invention discloses brazing filler metal for brazing stainless steel metallic mirrors and a process for manufacturing the brazing filler metal. Furnace charging materials comprising Ag, Cu, Zn, Mn, Ni, In, Si, Ce and Al are smelted to form the brazing filler metal for brazing the stainless steel metallic mirrors. The process for manufacturing the brazing filler metal particularly includes steps of firstly, placing a nickel sheet at the bottom of a steel ladle, and placing the zinc in the steel ladle; secondly, placing the Mn, the Cu, the Ag and the Si into the steel ladle; thirdly, adding covering agents into the steel ladle; fourthly, quickly heating the steel ladle so that the temperature of the steel ladle reaches 1100 DEG C, keeping the temperature of the steel ladle unchanged for longer than 20 minutes, adding the In, the Al and the Ce into the steel ladle after the materials in the steel ladle are melted, stirring the materials in the steel ladle uniformly, and allowing the materials in the steel ladle to stand for 5 minutes; and fifthly, heating the steel ladle again so that the temperature of the steel ladle reaches 800 DEG C, then uniformly stirring the materials in the steel ladle after five minutes and discharging the brazing filer metal from the steel ladle. The covering agents comprise calcium fluoride, sodium chloride and sodium fluoroaluminate. The brazing filler metal and the process have the advantages that the brazing filler metal is low in cost and good in brazing effect, welding requirements on high strength, high toughness and pore prevention are met, particularly, the covering agents comprising the calcium fluorite, the sodium chloride and the sodium fluoroaluminate are used in the process for manufacturing the brazing filler metal, accordingly, gas in alloy can be effectively exhausted, and effective smelting is guaranteed.

Description

technical field [0001] The invention relates to brazing material for brazing stainless steel metal mirrors and a manufacturing process. Background technique [0002] Stainless steel mirror frame brazing has high technical requirements, among which high strength, high toughness, no porosity and economy are very important, and general silver solder is difficult to meet the requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a brazing stainless steel metal mirror brazing material and its manufacturing process, which can improve the welding effect and reduce the cost of raw materials. [0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: brazing stainless steel metal mirror solder, which is characterized in that: it is formed by smelting furnace charge composed of Ag, Cu, Zn, Mn, Ni, In, Si, Ce and Al, The mass percentage of each com...

AI Technical Summary

Problems solved by technology

[0002] The brazing of stainless steel mirror frame has high technical requirements, among which high strength, high toughness, no porosity and economy are very important, and the general silver solder is difficult to meet the requirements