Method for melting manganese-copper alloy through vacuum induction furnace

Abstract

The invention discloses a method for melting manganese-copper alloy through a vacuum induction furnace and belongs to the technical field of copper alloy. The method comprises the following steps that (1) nickel, iron, copper and other pure metal and part of electrolytic manganese are fed along with the furnace; (2) the furnace is vacuumized firstly and then powered on to be heated; (3) after the alloy in the furnace becomes red hot, electrolytic manganese is fed in batches; (4) after all alloy is added, vacuumizing is stopped, and argon is introduced to achieve the shield atmosphere; (5) after the alloy melts through heating, argon bottom-blowing is carried out for stirring; and (6) the alloy is cast into a water-cooling ingot mold after the temperature is increased to 1050 DEG C. Volatilization of Mn and Cu is restrained by adding electrolytic manganese step by step to cool the metal and adopting the high-pressure argon shielding, so that constitution control is more accurate; by the adoption of argon bottom-blowing in the furnace, the problems that alloy slag melting is difficult and electrolytic manganese is prone to floating on a slag layer are solved; and by adopting the water-cooling copper ingot mold for casting, a shrinkage cavity of an ingot is reduced, and finally a manganese-copper alloy ingot uniform in texture and constitution is obtained.

Description

technical field [0001] The invention relates to a method for smelting manganese-copper alloys in a vacuum induction furnace, and relates to the technical field of copper alloys. Background technique [0002] With the development of large-scale and high-speed modern machinery and equipment, vibration and noise problems are becoming more and more prominent. Using high-damping alloys to make anti-vibration and noise reduction equipment can play a role in shock absorption, noise reduction and fatigue life improvement. The excellent high damping properties of manganese-copper alloys come from the existence of a large number of twin structures inside. Under the action of external force, the elastic twin structures absorb external energy due to the movement of grain boundaries and the deflection of magnetic moments, thus exhibiting high damping properties. Manganese copper damping alloy is mainly used in submarine engines, propellers, fasteners and gears with shock absorption requ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for smelting manganese-copper alloy in a vacuum induction furnace. By gradually adding electrolytic manganese cold material, the alloy in the furnace is heated up and down, and the volatilization of Mn and Cu elements is suppressed by high-pressure argon protection. , so that the composition control is more precise; the method of blowing argon at the bottom of the furnace solves the problem of difficulty in alloying slag and the problem that electrolytic manganese is easy to float on the slag layer; the shrinkage cavity of the ingot is reduced by using a water-cooled copper ingot mold for pouring, Finally, a manganese-copper alloy ingot with uniform structure and composition is obtained