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Manufacturing method of high-strength powder metallurgy brass base coupling

A technology of powder metallurgy and base coupling, which is applied in the field of bearing manufacturing, can solve problems such as difficulty in ensuring dimensional consistency, achieve good consistency, save processing and installation process, and be easy to manufacture

Inactive Publication Date: 2017-09-19
HAIAN YINGQIU POWDER METALLURGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of this invention is to provide a manufacturing method of high-strength powder metallurgy brass-based coupling, which solves the technical problem that there are many variables in traditional machining and it is difficult to ensure the consistency of its size

Method used

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  • Manufacturing method of high-strength powder metallurgy brass base coupling
  • Manufacturing method of high-strength powder metallurgy brass base coupling
  • Manufacturing method of high-strength powder metallurgy brass base coupling

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A method for preparing a high-strength powder metallurgy brass-based shaft coupling of the present invention, the manufacturing method of the shaft coupling includes the following steps:

[0030] S101: Powder mixing: first select the base powder with a purity of 99.99% or more for proportioning and fully mix it through a V-shaped mixer, put the following raw material powders in the weight percentage into the mixer and mix them to obtain the mixed powder, Zn Element powder: 28%, rare earth element powder: 0.6%, the balance is copper powder and unavoidable impurities;

[0031] S102: Low-temperature diffusion: Pass the uniformly mixed powder through a diffusion furnace at 200°C, and carry out low-temperature diffusion for 35 minutes under the protection of N gas, so as to pre-alloy part of the metal.

[0032] S103: Compression molding: put the powder after low-temperature diffusion into a mold for compression molding, and press it into a compact; the pressure is 150MPa, an...

Embodiment 2

[0037] A method for preparing a high-strength powder metallurgy brass-based shaft coupling of the present invention, the manufacturing method of the shaft coupling includes the following steps:

[0038] S101: Powder mixing: first select the base powder with a purity of 99.99% or more for proportioning and fully mix it through a V-shaped mixer, put the following raw material powders in the weight percentage into the mixer and mix them to obtain the mixed powder, Zn Element powder: 30%, rare earth element powder: 0.6%, the balance is copper powder and unavoidable impurities;

[0039] S102: Low-temperature diffusion: pass the uniformly mixed powder through a diffusion furnace at 300°C, and carry out low-temperature diffusion for 30 minutes under the protection of N gas, so that part of the metal is pre-alloyed.

[0040] S103: Compression molding: put the powder after low-temperature diffusion into a mold for compression molding, and press it into a compact; the pressure is 260MPa...

Embodiment 3

[0045] A method for preparing a high-strength powder metallurgy brass-based shaft coupling of the present invention, the manufacturing method of the shaft coupling includes the following steps:

[0046]S101: Powder mixing: first select the base powder with a purity of 99.99% or more for proportioning and fully mix it through a V-shaped mixer, put the following raw material powders in the weight percentage into the mixer and mix them to obtain the mixed powder, Zn Element powder: 32%, rare earth element powder: 0.6%, the balance is copper powder and unavoidable impurities;

[0047] S102: Low-temperature diffusion: Pass the uniformly mixed powder through a diffusion furnace at 400°C, and carry out low-temperature diffusion for 35 minutes under the protection of N gas, so that part of the metals are pre-alloyed.

[0048] S103: Compression molding: put the powder after low-temperature diffusion into a mold for compression molding, and press it into a compact; the pressure is 350MP...

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Abstract

The invention provides a preparation method of a high-strength powder metallurgy brass base coupling. The method comprises the following steps: powder mixing: the following raw material powder is put in a mixer for mixing to obtain mixed powder in percentage by weight: 28-32% of Zn element powder, 0.5-0.7% of rare earth element powder, and the balance of copper powder and inevitable impurities; low-temperature dispersion: the uniformly mixed mixture is dispersed at low temperature in a dispersion furnace through protection under N gas protective atmosphere, so that part of metal is prealloyed; and the high-strength powder metallurgy brass base coupling is obtained through pressing formation, sintering treatment, finishing and oil leaching treatment. The method solves the technical problem of difficult guarantee of the size consistency due to more variables in traditional machining.

Description

technical field [0001] The invention relates to the field of bearing manufacturing, in particular to a method for manufacturing a high-strength powder metallurgy brass-based shaft coupling. Background technique [0002] Couplings are the most commonly used connecting parts for shaft transmission of mechanical products. In the late 20th century, domestic and foreign coupling products developed rapidly. When designing products, how to choose a coupling that can meet the requirements of the machine from a variety of couplings with many varieties and different performances is a difficult task for most designers. Always a nagging question. Commonly used couplings include diaphragm couplings, gear couplings, plum blossom couplings, slider couplings, drum gear couplings, universal couplings, safety couplings, elastic couplings Device and serpentine spring coupling. [0003] At present, couplings are increasingly used in precision machinery controlled by servo systems, such as ma...

Claims

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Application Information

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IPC IPC(8): B22F5/10B22F3/16C22C9/04
CPCB22F3/16B22F5/10C22C9/04
Inventor 王春官卢国荣杨立新
Owner HAIAN YINGQIU POWDER METALLURGY CO LTD
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