Cemented Carbide Brazing AgCu28 BAg-8 Silver Welding Powder

Cu based brazing filler metal are composed of copper as the base and elements that can lower the melting point and improve its overall performance, such as P, Ag, Zn,Sn, Mn, Ni, Co, Ti, Si, B, Fe, etc., mainly pure copper, copper phosphorus, copper tin, copper zinc, copper manganese and other series. Cu based brazing filler metal are widely used in the brazing of copper and copper alloys, carbon steel and cast iron, stainless steel, high-temperature alloys, cemented carbide, etc., with good electrical conductivity, thermal conductivity, and better strength and corrosion resistance, etc.

Nickel-based filler metal are composed of nickel as the base with the addition of elements that can lower the melting point and increase its thermal strength, such as chromium, boron, silicon and phosphorus, etc. The main series are nickel-chromium-silicon boron, nickel-silicon boron, nickel-chromium-silicon,nickel-phosphorus, nickel-chromium-phosphorus, etc. Nickel-based filler metal are widely used in the brazing of stainless steel, high-temperature alloys, iron-based alloys, Fe-Ni-based alloys, diamond, cemented carbide, C/C composites, etc. They have excellent resistance to high temperature, corrosion, excellent mechanical properties, etc.

Silver filler metal is an alloy brazing material based on silver or silver-based solid solution. It has the characteristics of low melting point, good wettability and caulking performance, excellent strength, plasticity, electrical conductivity, corrosion resistance, etc. It can be used to braze almost all ferrous and non-ferrous metals except aluminum, magnesium and other low melting point metals, and has excellent wettability for diamond, graphite and carbon, cubic boron nitride ceramic materials, etc. after adding active elements, so it is widely used. In order to improve the process performance or economy and environmental protection of brazing materials, such as lowering the melting point, improving wettability, reducing the silver content, etc., zinc, tin, nickel, cadmium, indium and titanium alloy elements are usually added to the brazing materials to form ternary or multi-alloys.