Method for preparing molybdenum-copper component

A technology of molybdenum-copper alloy and parts, which is applied in the field of molybdenum-copper alloy parts and components, and the field of preparing molybdenum-copper alloy parts. It can solve the problems of not being suitable for mass production, single product form, general comprehensive performance, etc., and achieve high dimensional accuracy of products , Excellent comprehensive performance, high-precision effect

Inactive Publication Date: 2010-07-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the problems faced in the current production process of molybdenum-copper alloy parts such as single product form, general comprehensiv...

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  • Method for preparing molybdenum-copper component
  • Method for preparing molybdenum-copper component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Raw materials: The binder is composed of 70% PW, 7% HDPE, 20% EVA and 3% SA by mass percentage. The Fischer particle size of the molybdenum copper composite powder is 2.3 μm, and the powder loading is 60 vol%.

[0024] The Mo-15Cu composite powder [Mo-15Cu refers to the molybdenum copper composite powder with 15% copper mass fraction] and the prepared binder are mixed uniformly according to the above ratio at a loading amount of 60%, and then put into the temperature of 160 ℃ Mix in an internal mixer for 1.5 hours. After mixing, it will be crushed and granulated [granulation process, no special requirements for particle size] and injected on an injection molding machine with an injection temperature of 150°C and an injection pressure of 90 MPa to obtain the desired shape After the injection molding, the injection molding is immersed in methylene chloride at 37°C for 120 minutes. After the solvent degreasing is completed, the sample is taken out and dried in a constant tempe...

Embodiment 2

[0026] Raw materials: The binder is composed of 72% PW, 5% HDPE, 20% EVA and 3% SA by mass percentage. The Fisher particle size of the molybdenum copper composite powder is 3.5 μm, and the powder loading is 57 vol%.

[0027] Mix the Mo-10Cu composite powder [referring to the molybdenum copper composite powder with 30% copper mass fraction] and the prepared binder at the above ratio of 57% loading, and then put it into the kneader at a temperature of 150℃ Mixing for 2.5 hours. After mixing, crush and granulate and inject on an injection molding machine with an injection temperature of 155°C and an injection pressure of 100MPa to obtain an injection blank of the desired shape. Then the injection blank is immersed in methylene chloride at 37°C After 120 minutes, after the solvent degreasing is completed, take out the sample blank and dry it in a constant temperature drying oven for 4 hours; thermal debinding is carried out at 80-700℃ for 11 hours in total, using hydrogen protection. ...

Embodiment 3

[0029] Raw materials: The binder is composed of 75% PW, 5% HDPE, 19% EVA and 1% SA by mass percentage. The Fischer particle size of the molybdenum copper composite powder is 8μm, and the powder loading is 56vol%.

[0030] Mo-30Cu [referring to 30% copper mass fraction of molybdenum copper composite powder] composite powder and the prepared binder are mixed uniformly at the above ratio of 56% loading amount, and then put into the internal mixer at a temperature of 150℃ Mixing for 3 hours, after mixing, crush and granulate and inject on an injection molding machine with an injection temperature of 150°C and an injection pressure of 90MPa to obtain an injection blank of the desired shape, and then immerse the injection blank in 37°C methylene chloride After 150 minutes, after the solvent degreasing is completed, take out the sample blank and dry it in a constant temperature drying oven for 4 hours; thermal debinding is carried out at 80-700℃ for 11 hours in total, protected by hydrog...

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Abstract

The invention provides a novel method for preparing a molybdenum-copper component and belongs to the technical field of the molybdenum-copper forming. The method adopts the powder injection molding technology to prepare a molybdenum-copper injection blank, and then prepares the molybdenum-copper component by the steps of degreasing, presintering, sintering and the like. The sintered product is subjected to the heat treatment to obtain the molybdenum-copper component finished product with excellent performance and high size precision. The invention has the advantages of high utilization rate of the materials, no need of subsequent processing and capacity of batch production of the molybdenum-copper component product with high shape complexity and excellent combination property.

Description

Technical field [0001] The invention belongs to the technical field of molybdenum alloy forming, and particularly provides a new method for preparing molybdenum-copper alloy parts, which is suitable for mass production of molybdenum-copper alloy parts with high performance, high precision and high shape complexity. Background technique [0002] Molybdenum-copper alloy is a special composite material made of molybdenum with high melting point, high strength, low expansion coefficient and copper with good electrical and thermal conductivity. The material can integrate the excellent properties of molybdenum and copper, has good high temperature strength, low thermal expansion coefficient and excellent electrical and thermal conductivity, and its expansion coefficient and thermal conductivity can be adjusted and controlled, that is, the thermal conductivity can be adjusted through the composition ratio And thermal expansion coefficient and other parameters. Therefore, molybdenum cop...

Claims

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Application Information

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IPC IPC(8): B22F3/22B22F3/10
Inventor 李笃信侯海涛李昆
Owner CENT SOUTH UNIV
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