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Method for preparing tungsten-copper alloy based on loose-loading infiltration method

A tungsten-copper alloy and infiltration technology, which is applied in the field of preparing tungsten-copper alloy based on the loose-pack infiltration method, can solve the problems of high size and shape requirements, etc.

Inactive Publication Date: 2010-12-29
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing tungsten-copper alloy based on the loose packing infiltration method, which solves the problem that the size and shape of the tungsten-copper alloy prepared in the prior art are relatively high, and steel molds and special pressing or forming are required. equipment problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A W70Cu30 (tungsten 70 copper 30) alloy with a size of Φ8×150 mm was prepared, and in this embodiment, a regular round rod was produced.

[0039] Step 1. Select the powder particle size:

[0040] Since the tungsten content of the tungsten-copper alloy is 70%, the average particle size of the tungsten powder is 6-8 microns, and the particle size of the copper powder is 48-55 microns, and the particle size of the nickel powder is 58-65 microns. .

[0041] Step 2. Mixing: Calculate 74.9 grams of tungsten and 32.1 grams of copper according to the mass percentage of the prepared W70Cu30 tungsten-copper alloy, weigh 74.9 grams of tungsten powder with the particle size selected in step 1, and then weigh the total amount of tungsten and copper. 0.1 grams of nickel powder with a mass percentage of 0.1%, weigh 5.35 grams of pre-added copper powder according to 5% of the total mass of tungsten and copper, and calculate the value of 10% of the total mass of tungsten and copper as ...

Embodiment 2

[0046] A W70Cu30 (tungsten 70 copper 30) alloy with a size of 100×100×5 mm was prepared, and a regular rectangle was produced in this embodiment.

[0047] Step 1. Select the powder particle size

[0048] Since the tungsten content of the tungsten-copper alloy is 70%, the average particle size of the tungsten powder is 10-12 microns, the particle size of the copper powder is 50-58 microns, and the particle size of the nickel powder is 60-75 microns. Microns.

[0049] Step 2. Mixing: Calculate 497 grams of tungsten and 216 grams of copper according to the mass percentage of the prepared W70Cu30 tungsten-copper alloy, weigh 497 grams of tungsten powder with the particle size selected in step 1, and weigh the total amount of tungsten and copper. 0.71 grams of nickel powder with a mass percentage of 0.1%, weigh 35.5 grams of pre-added copper powder according to 5% of the total mass of tungsten and copper, and calculate the value of 10% of the total mass of tungsten and copper to b...

Embodiment 3

[0054] Prepare a W60Cu40 (tungsten 60 copper 40) alloy with an outer diameter of Φ200 mm, an inner diameter of Φ100 mm, and a thickness of 12 mm. In this embodiment, a regular cylindrical shape is produced.

[0055] Step 1. Select the powder particle size:

[0056] Since the tungsten content of the prepared tungsten-copper alloy is 60%, the average particle size of the tungsten powder is 15-55 microns, and the particle size of the copper powder is 50-58 microns, and the particle size of the nickel powder is 60-75 microns. Microns.

[0057] Step 2. Mixing: Calculate 2051.68 grams of tungsten and 1367.78 grams of copper according to the mass percentage of the prepared W60Cu40 tungsten-copper alloy, weigh 2051.68 grams of tungsten powder with the particle size selected in step 1, and then weigh the total amount of tungsten and copper. 3.42 grams of nickel powder with a mass percentage of 0.1%, weigh 170.97 grams of pre-added copper powder according to 5% of the total mass of tungs...

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Abstract

The invention discloses a method for preparing a tungsten-copper alloy based on a loose-loading infiltration method. The method comprises the following specific steps of: one, grain size selection of tungsten powder, copper powder and nickel powder; two, material mixing, namely calculating the masses of the tungsten and the copper according to the mass percentage of the tungsten-copper alloy to be prepared, weighing the tungsten powder, weighing the nickel powder which accounts for 0.05 to 0.15 percent of the total mass of the tungsten and the copper and weighing ethanol which accounts for 5 to 15 percent of the total mass of the tungsten and the copper according to the grain size selected in the step one, weighing pre-adding copper powder which is 5 percent of the total mass of the tungsten and the copper, and mechanically mixing the tungsten powder, the nickel powder, the ethanol and the pre-adding copper powder weighed in the step together; three, die-filling, namely filling the mixed powder into a graphite die, dropping gasoline into the die, and tamping the mixture to obtain a blank material; four, infiltration sintering, namely performing the infiltration sintering in a sintering furnace; and five, demoulding. The tungsten-copper alloy prepared by the method has sizes, shapes and components of any requirements, and is prepared without a steel die and a special pressing or forming device.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a method for preparing tungsten-copper alloy based on a loose packing infiltration method. Background technique [0002] Tungsten-copper composite materials are composed of tungsten and copper, which are two-phase monomers that are neither miscible nor intermetallic compounds, and are uniformly mixed. It is generally called a pseudo-alloy of tungsten-copper. It is this combination that makes tungsten-copper composite materials not only have the high temperature resistance, high strength, and high density of tungsten, but also have the characteristics of high strength, high density, and high thermal conductivity of copper, making them widely used in aerospace, electronics, Mechanical, electrical and other fields. However, with the rapid development of modern industry, there is a demand for larger-sized tungsten-copper alloys, slender rod tungsten-copper alloy...

Claims

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Application Information

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IPC IPC(8): C22C27/04C22C1/04
Inventor 陈文革陶文俊李锐
Owner XIAN UNIV OF TECH
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