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A kind of tin bronze-steel bimetallic composite material and preparation method thereof

A composite material, tin bronze technology, which is applied in the field of tin bronze-steel bimetallic composite materials and its preparation, can solve the problems of difficulty in meeting the requirements of medium and high pressure hydraulic pumps, low hardness of copper alloy layer, poor interface bonding strength, etc., and achieve Improve the bonding strength of the interface, reduce equipment investment, and increase the hardness

Active Publication Date: 2022-01-07
合肥波林新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper-steel bimetallic composite materials prepared by the commonly used copper alloy powder material and powder metallurgy process have problems such as low hardness of the copper alloy layer, poor interface bonding strength and complicated process, which are difficult to meet the requirements of medium and high pressure hydraulic pumps.

Method used

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  • A kind of tin bronze-steel bimetallic composite material and preparation method thereof
  • A kind of tin bronze-steel bimetallic composite material and preparation method thereof
  • A kind of tin bronze-steel bimetallic composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Adopt atomization method to prepare alloyed tin bronze powder material, the component content of alloyed tin bronze powder material is as shown in table 1, take by weighing 100 parts of alloyed tin bronze powder material, then add 0.6 part of stearin wherein Zinc acid to obtain the mixture, put the mixture into the mixer and mix it fully, take it out, and use a mechanical press to press the mixture to obtain a green compact with a density of 8.0g / cm 3 Tin bronze powder compacts;

[0024] (2) the material of steel substrate selects 45# steel, at first steel substrate surface is cleaned, then carries out copper-plating process on its surface, forms the copper-plated layer that thickness is 0.005mm on the surface of steel substrate;

[0025] (3) The sintering atmosphere is a nitrogen-hydrogen mixture with a hydrogen content of 15%, and the copper-plated steel substrate is placed on a tin bronze powder compact, and then placed together in a sintering furnace for heating...

Embodiment 2

[0027] (1) Adopt atomization method to prepare alloyed tin bronze powder material, the component content of alloyed tin bronze powder material is as shown in table 1, take by weighing 100 parts of alloyed tin bronze powder material, then add 0.4 part of stearin wherein Zinc acid to obtain the mixture, put the mixture into the mixer and mix it fully, take it out, and use a mechanical press to press the mixture to obtain a green compact with a density of 8.2g / cm 3 Tin bronze powder compacts;

[0028] (2) the material of steel substrate selects 45# steel, at first steel substrate surface is cleaned, then carries out copper-plating process on its surface, forms the copper-plated layer that thickness is 0.010mm on the surface of steel substrate;

[0029] (3) The sintering atmosphere is a nitrogen-hydrogen mixture with a hydrogen content of 16%. The copper-plated steel substrate is placed on a tin bronze powder compact, and then placed together in a sintering furnace for heating and...

Embodiment 3

[0031] (1) Adopt atomization method to prepare alloyed tin bronze powder material, the component content of alloyed tin bronze powder material is as shown in table 1, take by weighing 100 parts of alloyed tin bronze powder material, then add 0.8 part of stearin wherein Zinc acid to obtain the mixture, put the mixture into the mixer and mix it fully, take it out, and use a mechanical press to press the mixture to obtain a green compact with a density of 7.8g / cm 3 Tin bronze powder compacts;

[0032] (2) the material of steel substrate selects 45# steel, at first steel substrate surface is cleaned, then carries out copper-plating process on its surface, forms the copper-plated layer that thickness is 0.013mm on the surface of steel substrate;

[0033] (3) The sintering atmosphere is a nitrogen-hydrogen mixture with a hydrogen content of 14%. The copper-plated steel substrate is placed on a tin bronze powder compact, and then placed together in a sintering furnace for heating and...

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Abstract

The invention discloses a tin bronze-steel bimetallic composite material, which comprises a copper alloy layer and a steel substrate, the surface of the steel substrate has a copper-plated layer; the copper alloy layer is composed of the following components by weight percentage: tin 11% ~13%, nickel 4.5%~5.5%, lead 2.5%~3.5%, and the balance copper. Ni in the copper alloy layer can achieve better mutual solubility with Cu and Fe, which not only increases the hardness of the copper alloy layer, but also improves the interface bonding strength between the copper alloy layer and the steel substrate; Pb in the copper alloy layer It can make the copper alloy layer have good lubricating and antifriction effect. The invention also discloses a preparation method of the tin bronze-steel bimetallic composite material, which uses a gradient temperature rise method for heating and sintering to prepare a material with excellent performance. The preparation method provided by the invention has many advantages such as less equipment investment, simple operation and low cost, is beneficial to large-scale production, and has industrial application value.

Description

technical field [0001] The invention belongs to the technical field of bimetallic composite materials, and in particular relates to a tin bronze-steel bimetallic composite material and a preparation method thereof. Background technique [0002] Copper-steel bimetallic composite materials are widely used in the field of gear pumps, plunger pumps and other hydraulic pumps. Copper-steel bimetallic composite materials are composed of copper alloy layer and steel matrix, and the copper alloy layer is used as the working layer of friction pair parts. It not only has the characteristics of anti-friction, wear resistance, corrosion resistance, heat resistance and heat conduction, and anti-fatigue, but also has excellent anti-friction and anti-adhesion properties such as anti-occlusion, embedding, and compliance due to its soft and hard phase structure. Its steel matrix plays the role of bearing and impact resistance, which complements the shortcomings of copper alloys with low mecha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/02C22C1/04B22F7/04B22F3/10B22F3/02
CPCC22C9/02C22C1/0425B22F7/04B22F3/02B22F3/1017B22F2007/042
Inventor 方小亮马志伟郑合静李其龙
Owner 合肥波林新材料股份有限公司
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