Manganese-copper damping alloy powder based on slm process and preparation method thereof

A technology of damping alloy and powder, which is applied in the field of manganin-copper damping alloy powder based on SLM process and its preparation, which can solve the problems of general thermal processing performance and achieve the effects of high sphericity, small angle of repose, and high bulk density

Active Publication Date: 2021-05-07
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its general thermal processing performance, most of them are formed by casting or complex precision forging.

Method used

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  • Manganese-copper damping alloy powder based on slm process and preparation method thereof
  • Manganese-copper damping alloy powder based on slm process and preparation method thereof
  • Manganese-copper damping alloy powder based on slm process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of master alloy: all the examples adopt vacuum induction furnace to prepare master alloy, and the chemical composition of the master alloy is C: 0.05%, Ni: 5.19%, Si: 0.05%, P: 0.008%, S: 0.016%, Fe : 4.13%, Cu: 20.4%, and the balance is Mn and unavoidable impurities.

[0034](2) VIGA powder making: After putting the master alloy into the melting crucible, vacuumize the melting chamber. When the pressure drops below 0.1Pa, fill it with high-purity argon gas above 99.999% until the melting chamber pressure returns to the standard atmospheric pressure. Inductively heat the master alloy to 1400°C. After the master alloy is completely melted, pour the molten metal into the magnesium oxide tundish for supersonic gas atomization powder production: the atomization medium is 99.999% high-purity argon, mist The atomization pressure is 6.5MPa, the atomized metal powder is cooled in the cooling room, and directly collected into the sealed container under the cyclon...

Embodiment 2

[0037] (1) Master alloy preparation: all examples adopt vacuum induction furnace to prepare master alloy, the chemical composition of the master alloy is C: 0.028%, Ni: 4.93%, Si: 0.03%, P: 0.007%, S: 0.058%, Fe : 2.18%, Cu: 22.5%, and the balance is Mn and unavoidable impurities.

[0038] (2) VIGA powder making: After putting the master alloy into the melting crucible, vacuumize the melting chamber. When the pressure drops below 0.1Pa, fill it with high-purity argon gas above 99.999% until the melting chamber pressure returns to the standard atmospheric pressure. Induction heating is carried out on the master alloy to 1450°C. After the master alloy is completely melted, the metal liquid is poured into the magnesia tundish for supersonic gas atomization powder production: the atomization medium is 99.999% high-purity argon, mist The atomization pressure is 7.0MPa, the atomized metal powder is cooled in the cooling room, and directly collected into the sealed container under th...

Embodiment 3

[0041] (1) Preparation of master alloy: all the examples adopt vacuum induction furnace to prepare master alloy, and the chemical composition of the master alloy is C: 0.11%, Ni: 5.14%, Si: 0.06%, P: 0.018%, S: 0.037%, Fe : 4.86%, Cu: 22.4%, and the balance is Mn and unavoidable impurities.

[0042] (2) VIGA powder making: After putting the master alloy into the melting crucible, vacuumize the melting chamber. When the pressure drops below 0.1Pa, fill it with high-purity argon gas above 99.999% until the melting chamber pressure returns to the standard atmospheric pressure. Inductively heat the master alloy to 1480°C. After the master alloy is completely melted, pour the molten metal into the magnesium oxide tundish for supersonic gas atomization powder production: the atomization medium is 99.999% high-purity argon, mist The atomization pressure is 7.5MPa, the atomized metal powder is cooled in the cooling room, and directly collected into the sealed container under the cyclo...

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Abstract

A manganin-copper damping alloy powder based on an SLM process and a preparation method thereof belong to the technical field of metal materials for additive manufacturing. The chemical composition of the powder is C: ≤0.15%, Ni: 4.9-5.2%, Si: ≤0.15%, Fe: 1.8-5.0%, Cu: 20-23%, P: ≤0.03%, S: ≤0.06%, the balance is Mn and unavoidable impurity elements. The manufacturing process includes: master alloy preparation, vacuum induction melting gas atomization method VIGA powder making, mechanical vibration and airflow classification sieving and collection under the protection of inert gas. Compared with the existing technology, the powder has high sphericity, high bulk density, small angle of repose, good fluidity and high yield of fine powder of 15-53 μm, and can be used in the fields of aerospace and ship additive manufacturing Shock-absorbing and damping parts can also be extended to the field of additive manufacturing of precision electronic instruments for transportation and nuclear power, which has broad market prospects.

Description

technical field [0001] The invention belongs to the technical field of metal materials for additive manufacturing, and in particular relates to a manganese-copper damping alloy powder based on an SLM process and a preparation method thereof. Background technique [0002] With the rapid development of science and technology and the improvement of people's living standards, the problem of vibration and noise reduction has attracted more and more attention from individuals and enterprises. Especially with the development of equipment in aviation, ships, and automobiles becoming increasingly high-speed and high-power, the resulting wide-band random excitation will cause multi-resonant peak responses of the structure, thereby causing electronic devices to fail, instruments and meters to fail, and in severe cases even In order to solve the vibration and noise problems, materials with high damping performance are used to prepare damping elements for specific vibration and noise sou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C22/00B22F9/08B22F10/28B22F10/64B33Y70/00B33Y10/00B33Y40/20B22F1/05B22F1/065
CPCC22C22/00B22F9/082B33Y70/00B33Y10/00B33Y40/00B22F2009/0824B22F2009/0844B22F10/00B22F10/34B22F10/36B22F10/64B22F10/28B22F1/065B22F1/05B22F2999/00Y02P10/25C22B9/04C22B9/003B33Y40/20B22F3/15B22F2009/0848B22F2009/086C22C1/04B22F2203/11B22F2203/13B22F2202/07B22F2201/20B22F2201/11B33Y80/00B33Y40/10B22F10/66B22F2301/10B22F2304/10
Inventor 王长军孙永庆刘振宝梁剑雄杨志勇苏杰王春旭李文辉马聪慧胡家齐厉勇韩顺宁静高齐
Owner CENT IRON & STEEL RES INST
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