Method for melting manganese-copper alloy through vacuum induction furnace

A vacuum induction furnace and manganese-copper alloy technology, applied in the field of copper alloys, can solve the problems of difficulty in alloying slag, electrolytic manganese is easy to float on the slag layer, etc., and achieves low production cost, uniform structure and composition, and precise composition control. Effect

Active Publication Date: 2016-11-23
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1: A 50kg vacuum induction furnace is used to smelt manganese-copper damping alloy. The equipment of this embodiment uses a 50kg vacuum induction furnace: the rated capacity is 50kg, the rated power is 100KW, and the ultimate vacuum is 6.67×10 -2 Pa.

[0026] (1) Put 5kg of electrolytic copper, 3kg of electrolytic nickel, 2kg of industrial pure iron, and 15kg of electrolytic manganese into the crucible of vacuum induction furnace.

[0027] (2) First vacuum to 5Pa, and then apply electric heating.

[0028] (3) After the alloy material in the furnace is red hot, add 5kg of electrolytic manganese each time to cover, add 5 times in total, and add all the raw materials to 50kg.

[0029] (4) Stop the vacuum and fill the protective atmosphere with argon to 80,000Pa.

[0030] (5) After continuing to heat until the alloy material melts, blow argon at the bottom for stirring. The pressure of argon at the bottom is 0.2MPa and the flow rate is 1NL / min. Stop the bottom blowing of ar...

Example Embodiment

[0036] Example 2: A 500kg vacuum induction furnace is used to smelt manganese-copper damping alloy. The equipment in this embodiment uses a 500kg vacuum induction furnace: the rated capacity is 500kg, the rated power is 300KW, and the ultimate vacuum is 6.67×10 -2 Pa.

[0037] (1) Add 150kg of electrolytic copper, 25kg of electrolytic nickel, 25kg of industrial pure iron, and 50kg of electrolytic manganese into the crucible of vacuum induction furnace.

[0038] (2) First vacuum to 5Pa, and then apply electric heating.

[0039] (3) After the alloy material in the furnace is red hot, add 50kg of electrolytic manganese each time to cover, add a total of 5 times, and add all the raw materials to a total of 500kg.

[0040] (4) Stop the vacuum and fill the protective atmosphere with argon to 80,000Pa.

[0041] (5) After continuing to heat until the alloy material melts, blow argon at the bottom for stirring. The pressure of argon at the bottom is 0.2MPa and the flow rate is 3NL / min. Stop th...

Example Embodiment

[0047] Example 3: A 1t vacuum induction furnace is used to smelt manganese-copper damping alloy. The equipment in this embodiment uses a 1t vacuum induction furnace: the rated capacity is 1t, the rated power is 700KW, and the ultimate vacuum is 6.67×10 -2 Pa.

[0048] (1) Add 200kg of electrolytic copper, 30kg of electrolytic nickel, 20kg of industrial pure iron, and 250kg of electrolytic manganese into the crucible of vacuum induction furnace.

[0049] (2) First vacuumize to 4Pa, and then apply electric heating.

[0050] (3) After the alloy material in the furnace is red hot, add 50kg of electrolytic manganese each time to cover, add a total of 10 times, and add all the raw materials to 1t.

[0051] (4) Stop the vacuum and fill the protective atmosphere with argon to 70,000Pa.

[0052] (5) After continuing to heat until the alloy material melts, argon is blown at the bottom for stirring. The pressure of argon at the bottom is 0.4MPa and the flow rate is 5NL / min. Stop the bottom blowi...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C22C22/00C22C1/02
CPCC22C1/02C22C22/00
Inventor 高宇窦磊李瑞杰李博斌张福利
Owner HEBEI IRON AND STEEL
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