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A kind of copper alloy feed and preparation method thereof, and preparation method of copper alloy blank

A copper alloy and feeding technology, which is applied in metal processing equipment, metal material coating process, liquid chemical plating, etc., can solve the problems of affecting the sintering and densification process, damaging the surface quality, restricting the application, etc., to improve the mechanical properties, Effect of improving binding force and improving electrical conductivity

Active Publication Date: 2022-03-01
SUQIAN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, some special metal elements (such as copper, cobalt, etc.) are easy to react with nitric acid or nitric acid vapor to form nitrate compounds, which affect the subsequent sintering and densification process, and even damage the surface quality. It also limits the application of metal materials such as copper and cobalt in metal injection molding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Copper alloy and forming agent are prepared according to the weight ratio of 80:20. The particle size of the copper alloy is 200 mesh, including the following components in mass percentage: Cu 65%, Al 30%, Ni 4%, rare earth element 1 %; the forming agent includes the following components in mass percentage: polyoxymethylene 73%, naphthalene 3%, carnauba wax 10%, polybutylene terephthalate 10%, zinc stearate 4%, the The particle size of polyoxymethylene, carnauba wax and polybutylene terephthalate is 200 mesh, and the copper alloy powder has a core-shell structure, the inner core is copper alloy, and the outer shell is nickel.

[0023] First select high-purity aluminum samples, after sanding, remove the oxides on the surface, put them into a container containing acetone solution, clean them with ultrasonic waves, take them out and dry them for later use; put the dried aluminum samples in Put it into the crucible, raise the temperature to 680-700°C, then add the preheated...

Embodiment 2

[0029] Copper alloy and forming agent are prepared according to the weight ratio of 70:30. The particle size of the copper alloy is 300 mesh, including the following components in mass percentage: Cu 70%, Al 25%, Ni 4%, rare earth element 1 %; the forming agent comprises the following components by mass percentage: polyoxymethylene 78%, naphthalene 2%, carnauba wax 5%, polybutylene terephthalate 10%, zinc stearate 5%, the The particle size of polyoxymethylene, carnauba wax and polybutylene terephthalate is 300 mesh, and the copper alloy powder has a core-shell structure, the inner core is copper alloy, and the outer shell is nickel.

[0030] First select high-purity aluminum samples, after sanding, remove the oxides on the surface, put them into a container containing acetone solution, clean them with ultrasonic waves, take them out and dry them for later use; put the dried aluminum samples in Put it into the crucible, raise the temperature to 680-700°C, then add the preheated...

Embodiment 3

[0036] The copper alloy and the forming agent are prepared according to the weight ratio of 70:30. The particle size of the copper alloy is 500 mesh, including the following components in mass percentage: Cu 70%, Al 25%, Ni 4%, rare earth element 1 %; the forming agent comprises the following components by mass percentage: polyoxymethylene 78%, naphthalene 2%, carnauba wax 5%, polybutylene terephthalate 10%, zinc stearate 5%, the The particle size of polyoxymethylene, carnauba wax and polybutylene terephthalate is 200 mesh, and the copper alloy powder has a core-shell structure, the inner core is copper alloy, and the outer shell is nickel.

[0037] First select high-purity aluminum samples, after sanding, remove the oxides on the surface, put them into a container containing acetone solution, clean them with ultrasonic waves, take them out and dry them for later use; put the dried aluminum samples in Put it into the crucible, raise the temperature to 680-700°C, then add the p...

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PUM

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Abstract

A copper alloy feed material and a preparation method thereof, and a method for preparing a copper alloy green body. The copper alloy powder is coated with a copper alloy to form a core-shell structure copper alloy powder, mixed with a binder to form a feed material, degreased and sintered, and prepared. Copper alloy products, after testing, the density of the products prepared by copper alloy feeding is greatly improved, and the surface quality of the prepared products is improved.

Description

technical field [0001] The invention relates to the technical field of metal injection molding feed, more specifically, the invention relates to a copper alloy feed and a preparation method thereof, and a preparation method of a copper alloy green body. Background technique [0002] Metal Powder Injection Molding (MIM for short) is a new type of near-net-shape (Net or Near-net-Shape) technology formed by combining modern plastic injection molding technology with the field of powder metallurgy. It is mainly to add a binder to the metal powder, and then inject the feed material into the mold by injection molding, thus solving the problem of difficult forming of complex products in metal powder metallurgy technology. Degreasing is an important process in MIM. Under the premise of ensuring that the injection molding blank does not produce defects, it can quickly remove the binder in the feed, thereby improving production efficiency. [0003] At present, conventional degreasing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/103B22F1/17B22F9/08C23C18/34B22F3/22B22F3/10C22C9/01
CPCB22F9/08C23C18/34B22F3/225B22F3/1025B22F3/1007C22C9/01B22F2999/00B22F1/103B22F1/17B22F1/10B22F2201/20
Inventor 孙虎傅小明杨在志
Owner SUQIAN COLLEGE