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A kind of copper-tungsten alloy parts and manufacturing method thereof

A manufacturing method and technology of copper-tungsten alloy, applied in metal processing equipment, transportation and packaging, additive processing, etc., can solve the problem of difficult to meet the manufacturing of copper-tungsten alloy parts, and increase the difficulty of dimensional accuracy control, high efficiency, Excellent physical and mechanical properties

Active Publication Date: 2022-07-26
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional powder metallurgy process has been difficult to meet the manufacturing of this type of copper-tungsten alloy parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The present embodiment provides a method for manufacturing micro-miniature tungsten-copper alloy parts, which specifically includes:

[0077] Select spherical tungsten powder with a particle size of less than 10 μm, an average particle size of 2-3 μm, and spherical copper powder with a particle size of less than 15 μm and an average particle size of 6-8 μm into the mixer at a mass ratio of 90:10, and mechanically mix for 10 hours. Obtain tungsten copper mixed powder.

[0078] The tungsten-copper mixed powder is banburyed with a paraffin-based binder composed of PW, MW, PP, EVA and SA, crushed and granulated to obtain a tungsten-copper alloy feed. Among them, the mass fraction of the paraffin-based binder in the tungsten copper alloy feed is 8%. The mass ratio of PW, MW, PP, EVA and SA is 50%:18%:20%:10%:2%.

[0079] The tungsten-copper alloy feed is injected into the pre-designed mold cavity on the injection machine, the injection temperature is 140°C, and the mold te...

Embodiment 2

[0085] The present embodiment provides a method for manufacturing micro-miniature tungsten-copper alloy parts, which specifically includes:

[0086] Select spherical tungsten powder with a particle size of less than 10μm and an average particle size of 2-3μm and spherical copper powder with a particle size of less than 15μm and an average particle size of 6-8μm. , to obtain tungsten-copper mixed powder.

[0087] The tungsten-copper alloy powder is mixed with a paraffin-based binder composed of PW, MW, PP, EVA and SA, crushed and granulated to obtain the tungsten-copper alloy feed. Among them, the mass fraction of the paraffin-based binder in the tungsten-copper alloy feed is 6%. The mass ratio of PW, MW, PP, EVA and SA is 50%:18%:20%:10%:2%.

[0088] The tungsten-copper alloy feed is injected into the pre-designed mold cavity on the injection machine, the injection temperature is 150°C, and the mold temperature is 30°C, and the micro-miniature tungsten-copper alloy parts are...

Embodiment 3

[0094] The present embodiment provides a method for manufacturing micro-miniature tungsten-copper alloy parts, which specifically includes:

[0095] Select spherical tungsten powder with a particle size of less than 10 μm and an average particle size of 2-3 μm and spherical copper powder with a particle size of less than 15 μm and an average particle size of 6-8 μm into the mixer at a mass ratio of 70:30, and mechanically mix for 10 hours. Obtain tungsten copper mixed powder.

[0096] The tungsten-copper alloy powder is mixed with a paraffin-based binder composed of PW, MW, PP, EVA and SA, crushed and granulated to obtain the tungsten-copper alloy feed. Among them, the mass fraction of the paraffin-based binder in the tungsten copper alloy feed is 4%. The mass ratio of PW, MW, PP, EVA and SA is 50%:18%:20%:10%:2%.

[0097] The tungsten-copper alloy feed is injected into the pre-designed mold cavity on the injection machine, the injection temperature is 160°C, and the mold te...

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Abstract

The invention discloses a copper-tungsten alloy part and a manufacturing method thereof, belonging to the technical field of copper-tungsten alloy parts. The process includes the following steps: banburying and granulating the tungsten-copper mixed powder obtained by mixing tungsten powder and copper powder into a feed, then injecting the feed into a green part, and then performing degreasing, high-temperature sintering and hot isostatic pressing. wherein, the tungsten powder is spherical tungsten powder with a particle size of less than 10 μm, the copper powder is spherical copper powder with a particle size of less than 15 μm, and the mass fraction of the tungsten powder in the tungsten-copper mixed powder is 70-90%. The method is suitable for the manufacture of micro-miniature copper-tungsten alloy parts, especially the micro-miniature copper-tungsten alloy parts with complex shapes. Subsequent processing is not required or required, the cost is low, the efficiency is high, and the degree of freedom of parts design is increased. It has great technical and economic advantages in the preparation of copper-tungsten products with small size and complex shape. The manufactured copper-tungsten alloy parts have high precision, high density and excellent physical and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of copper-tungsten alloy parts, in particular to a copper-tungsten alloy part and a manufacturing method thereof. Background technique [0002] Tungsten copper alloy is composed of tungsten with high melting point, high hardness, low thermal expansion and copper with high electrical conductivity and thermal conductivity. Tungsten and copper do not dissolve in each other and are typical pseudo-alloys. Therefore, tungsten copper alloy has the high strength, high hardness and low thermal expansion properties of tungsten, and also has the high plasticity, good thermal conductivity and electrical conductivity of copper. Tungsten-copper alloys are widely used in high-voltage electrical appliances, electronic electricians, weapons and other fields. Tungsten and copper are immiscible and have a large difference in melting point. It is difficult to prepare by casting method. In industry, powder metallurgy is usuall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C22C9/00B22F1/10B22F3/10B22F3/15B22F3/22B22F5/00B33Y80/00
CPCC22C1/0425C22C9/00B22F3/225B22F3/1021B22F3/15B22F5/00B33Y80/00
Inventor 胡可韩胜利申正焱
Owner GUANGDONG INST OF NEW MATERIALS
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