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Method for preparing graphene composite anti-attrition metal material by adopting SLM technology

A graphene composite and anti-friction metal technology, which is applied in the field of anti-friction metal manufacturing, can solve the problems of poor durability and complex preparation process of anti-friction metal materials, and achieve the effects of avoiding aging and falling off, excellent anti-friction performance, and improving durability

Pending Publication Date: 2021-12-21
SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the prior art, to provide a method for preparing graphene composite anti-friction metal materials using SLM technology, and to solve the defects of complex preparation process and poor durability of the existing anti-friction metal materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: a kind of method adopting SLM technology to prepare graphene composite antifriction metal material, comprises the steps:

[0021] (1) Select titanium alloy powder with a particle size range of 20-50um, and dry the selected titanium alloy powder in a drying oven at 100-150°C for at least 3 hours, and wait for the titanium alloy powder to cool at room temperature for later use;

[0022] (2) After the graphene is ground into powder, sieve powder with a 300-400 mesh screen to remove large particles;

[0023] (3) The cooled alloy powder obtained in the above steps and the screened graphene powder are added to the mixed powder for mixing, and argon gas is charged during the powder mixing, and the mixing time is not less than 2 hours, thereby forming a mixed powder. The ratio of graphene and titanium alloy powder in the powder is 1:3;

[0024] (4) Determine the three-dimensional solid model of the anti-friction metal material, and slice and layer the three-dimen...

Embodiment 2

[0026] Embodiment 2: a kind of method adopting SLM technology to prepare graphene composite antifriction metal material, comprises the steps:

[0027] (1) Select titanium alloy powder with a particle size range of 20-50um, and dry the selected titanium alloy powder in a drying oven at 100-150°C for at least 3 hours, and wait for the titanium alloy powder to cool at room temperature for later use;

[0028] (2) After the graphene is ground into powder, sieve powder with a 300-400 mesh screen to remove large particles;

[0029] (3) The cooled alloy powder obtained in the above steps and the screened graphene powder are added to the mixed powder for mixing, and argon gas is charged during the powder mixing, and the mixing time is not less than 2 hours, thereby forming a mixed powder. The ratio of graphene and titanium alloy powder in the powder is 1:5;

[0030] (4) Determine the three-dimensional solid model of the anti-friction metal material, and slice and layer the three-dimen...

Embodiment 3

[0032] Embodiment 3: a kind of method adopting SLM technology to prepare graphene composite antifriction metal material, comprises the steps:

[0033] (1) Select titanium alloy powder with a particle size range of 20-50um, and dry the selected titanium alloy powder in a drying oven at 100-150°C for at least 3 hours, and wait for the titanium alloy powder to cool at room temperature for later use;

[0034] (2) After the graphene is ground into powder, sieve powder with a 300-400 mesh screen to remove large particles;

[0035] (3) The cooled alloy powder obtained in the above steps and the screened graphene powder are added to the mixed powder for mixing, and argon gas is charged during the powder mixing, and the mixing time is not less than 2 hours, thereby forming a mixed powder. The ratio of graphene and titanium alloy powder in the powder is 1:4;

[0036] (4) Determine the three-dimensional solid model of the anti-friction metal material, and slice and layer the three-dimen...

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Abstract

The invention discloses a method for preparing a graphene composite anti-attrition metal material through an SLM technology. The method comprises the following steps that alloy powder with the particle size ranging from 20 micrometers to 50 micrometers is selected for later use; graphene is ground into powder, and then large particles are removed; alloy powder and graphene powder are added into the mixed powder to be mixed, and blended powder is formed; a program file and forming process parameters of SLM equipment are determined; and the blended powder is evenly spread on a working platform of the SLM equipment, selective melting is started through the SLM equipment according to the program file and the forming process parameters imported into the SLM equipment, after each layer of blended powder is subjected to selective melting, the next layer of blended powder is laid, selective melting continues, and the process is repeated till the anti-attrition metal material is stacked and formed. The anti-attrition metal material is formed at a time, the process is simplified, meanwhile, the yield of the material is increased, and waste products such as cracks of the material in the machining process are avoided.

Description

technical field [0001] The invention belongs to the field of anti-friction metal manufacturing, and in particular relates to the preparation of an anti-friction metal material based on selective laser melting technology. Background technique [0002] As the most cutting-edge and most potential technology in the entire field of additive manufacturing technology, SLM-Selective Laser Melting is an important development direction of advanced manufacturing technology. SLM technology is a technology that uses metal powder to be completely melted under the heat of a laser beam, and then cooled and solidified to form a shape. According to the layered slice information of the three-dimensional CAD model of the molded part, the scanning system (galvanometer) controls the laser beam to act on the powder in the area to be formed. Under the action of high laser energy density, the metal powder is completely melted. After one layer of scanning is completed, the piston The piston in the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B33Y10/00B22F1/00B33Y70/10C22C1/05C22C14/00C22C21/00
CPCB22F10/28B33Y10/00B33Y70/10C22C1/05C22C14/00C22C21/00Y02P10/25
Inventor 区炳显陆瑶虞浩天王荣霞刘文俊
Owner SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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