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High-manganese wear-resistant aluminum bronze alloy and preparation method thereof

A technology of aluminum bronze and high manganese, which is applied in the field of copper alloys, can solve the problems of human health and environmental side effects, high requirements for mold making, and reduced wear life, so as to improve comprehensive performance, excellent mechanical properties, and increase service life. Effect

Active Publication Date: 2019-08-09
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the above patent achievements, CN100543160C patent pointed out that the alloy is used after casting and heat treatment, its strength is only about 300Mpa, and its plasticity is also low, which affects the service life; Alloying elements sometimes sacrifice the consideration of making contributions to strength and hardness; although the cost of CN1092817A patent is low, there are more alloying elements and slightly higher strength, but the plasticity at room temperature is low, which reduces its wear life; CN85106324A and CN1827811A disclosed Arsenic-containing brass alloys inevitably have toxic side effects on human health and the environment during preparation and use, and should be avoided as much as possible
At present, there are few researches on high-strength and wear-resistant copper alloys in China. Some use the equal channel angle extrusion process. Although the strength and hardness of copper alloys are improved, the process is complicated and the requirements for mold making are high, so it is difficult to realize engineering applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Its production process includes the following steps

[0043] Batching - melting and casting - first annealing - extrusion - second annealing - finished product.

[0044] The specific process is: the raw materials used in the present invention are electrolytic copper plates, pure manganese ingots, pure nickel plates, pure boron, pure chromium ingots, sponge zirconium, pure silicon ingots, pure aluminum ingots, and rare earth cerium. Use the above raw materials to make copper-manganese master alloys containing 30% manganese, copper-nickel master alloys containing 50% nickel, copper-chromium master alloys containing 20% ​​chromium, and copper-cerium master alloys containing 5% cerium. Add the corresponding amount of master alloy according to the composition ratio of 1, add boron, zirconium, silicon and aluminum as pure metal, and add the corresponding amount of electrolytic copper plate.

[0045] Put the intermediate alloy ingot and pure metal into the graphite crucible t...

Embodiment 2

[0047] Its production process includes the following steps

[0048] Batching - melting and casting - first annealing - extrusion - second annealing - finished product.

[0049] The specific process is: the raw materials used in the present invention are electrolytic copper plates, pure manganese ingots, pure nickel plates, pure boron, pure chromium ingots, sponge zirconium, pure silicon ingots, pure aluminum ingots, and rare earth cerium. Use the above raw materials to make copper-manganese master alloys containing 30% manganese, copper-nickel master alloys containing 50% nickel, copper-chromium master alloys containing 20% ​​chromium, and copper-cerium master alloys containing 5% cerium. Add the corresponding amount of master alloy according to the composition ratio of 1, add boron, zirconium, silicon and aluminum as pure metal, and add the corresponding amount of electrolytic copper plate.

[0050] Put the intermediate alloy ingot and pure metal into the graphite crucible t...

Embodiment 3

[0052] Its production process includes the following steps

[0053] Batching - melting and casting - first annealing - extrusion - second annealing - finished product.

[0054] The specific process is: the raw materials used in the present invention are electrolytic copper plates, pure manganese ingots, pure nickel plates, pure boron, pure chromium ingots, sponge zirconium, pure silicon ingots, pure aluminum ingots, and rare earth cerium. Use the above raw materials to make copper-manganese master alloys containing 30% manganese, copper-nickel master alloys containing 50% nickel, copper-chromium master alloys containing 20% ​​chromium, and copper-cerium master alloys containing 5% cerium. Add the corresponding amount of master alloy according to the composition ratio of 1, add boron, zirconium, silicon and aluminum as pure metal, and add the corresponding amount of electrolytic copper plate.

[0055] Put the intermediate alloy ingot and pure metal into the graphite crucible t...

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Abstract

The invention relates to a high-manganese wear-resistant aluminum bronze alloy. The high-manganese wear-resistant aluminum bronze alloy comprises the following components of 73.0%-75.0% of copper, 3.0%-4.0% of nickel, 0.5%-1.2% of chromium, 8.0%-10.0% of manganese, 3%-5% of silicon, 0.3%-1.0% of zirconium, 0.1%-0.3% of boron, 0.05%-0.25% of cerium and the balance aluminum and inevitable impurities, wherein the impurity content is less than or equal to 0.1%. The aluminum bronze alloy has excellent mechanical properties, good wear resistance and good machinability.

Description

technical field [0001] The invention relates to the field of copper alloys, in particular to a high-manganese wear-resistant aluminum bronze alloy and a preparation method thereof. Background technique [0002] High-performance hydraulic pumps are widely used in military, mining, metallurgy, engineering and other mechanical industries. The advanced hydraulic technology is often used as a standard to measure a country's industrial technology level. The key parts of the high-performance hydraulic pump in the hydraulic system, such as cylinder block, copper sleeve, composite sintered copper parts, bearing bush, ball joint, oil distribution plate and other components are all high-strength and wear-resistant copper parts. The hydraulic pump is the heart part of energy conversion in the hydraulic system. Most of its failures are caused by wear, and the wear of the key friction pairs accounts for about 50%. These friction pairs are often composed of steel (iron) and copper alloys. ...

Claims

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Application Information

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IPC IPC(8): C22C9/01C22C1/03C22F1/08
CPCC22C1/03C22C9/01C22F1/08
Inventor 张全孝黄伟田开文黄伟明张延松周春华
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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