Copper-zinc-nickel-cobalt-indium alloy and preparation method thereof

Abstract

The invention relates to a copper-zinc-nickel-cobalt-indium alloy and a preparation method thereof. The alloy comprises the following raw materials by weight percent: 43-65% of Cu, 28-45% of Zn, 1-15%of Ni, 0.3-4% of Co, 0.1-2% of In, 0.08-4% of Mn, 0.05-0.3% of Si, 0-2% of Sn, 0-2% of Ag and 0.03-0.07% of Re containing Ce and La in a weight ratio of 2:3. The preparation method comprises the following steps: smelting high melting point metals -- Ni, Co, and Cu to obtain an intermediate alloy A, smelting deoxidizing elements -- Si, Mn and Cu to obtain an intermediate alloy B, smelting oxidablemetals -- Ce, La and Cu in a vacuum furnace to obtain an intermediate alloy C, melting Cu in a medium frequency furnace, adding the intermediate alloy A in the medium frequency furnace to fully fuse,covering the obtained product with a mixture of cullet and cryolite, fully fusing, adding the intermediate alloy B, then adding metal Ag, Zn, Sn and In, adding the intermediate alloy C to perform full deoxidation and fusion, standing for 50min and performing continuous casting to form copper-zinc-nickel-cobalt-indium alloy ingots.

Description

technical field [0001] The invention relates to a welding material, in particular to a copper-zinc-nickel-cobalt-indium alloy which is especially suitable for welding hard alloys and a manufacturing method thereof. Background technique [0002] Cemented carbide is widely used in industrial production and social life. Due to its high hardness, good red hardness, good wear resistance, excellent wear resistance, low price and superior cost performance, cemented carbide is used in modern industrial materials. There is an irreplaceable important position. It has been widely used in cutting tools, drilling tools, exploration tools, mining tools, powder metallurgy, etc. [0003] In the field of application, cemented carbide is either mechanically inlaid or brazed to be integrated with the steel substrate. The wide application of cemented carbide largely depends on the development of brazing technology and brazing materials. There are about 5,000 tons of brass solder used for bra...

AI Technical Summary

Problems solved by technology

For this reason, foreign companies have developed Cu62Zn34Ni3Mn1 solder, which has a high melting temperature, which will cause oxidation of cemented carbide and residual thermal stress during brazing.

[0007] Some of the above brazing materials can solve the problem of brazing seam strength but the brazing temperature is high; some can reduce the brazing temperature, but the brazing seam strength is low; Cobalt removal