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Copper alloy for valve and valve preparation method

A copper alloy and valve technology, applied in the field of alloys, can solve problems such as low wear resistance, low strength, and inability to withstand extreme heat and cold, and achieve high safety, good cutting performance, and good cold and hot processing performance.

Inactive Publication Date: 2021-08-20
NINGBO HUACHENG VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper alloy valve is a kind of valve. Because of its strong corrosion resistance, copper alloy has been fully used in valves and valve parts. It plays a key role in many fields, but copper valves also have Some defects, such as: low wear resistance, low strength, and inability to withstand extreme cold and heat, resulting in a shorter service life of the valve and more limited application scenarios

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A copper alloy for a valve, the copper alloy includes a strengthening agent and a basic raw material, and the copper alloy is obtained by strengthening the basic raw material through a strengthening agent; in terms of mass percentage, the composition of the basic raw material is: Bi 0.8%, Zn 15 %, Nb0.6%, Zr 1%, Ni0.8%, Sn 0.2%, C1%, the balance is copper and unavoidable impurities; the strengthening agent is selected from silicon carbide.

[0016] The mass ratio of the reinforcing agent to the basic raw material is 10:100.

[0017] The particle size of the reinforcing agent is 3-5 microns.

[0018] A kind of preparation method of valve, adopts above-mentioned copper alloy for valve, and its specific steps are:

[0019] (1) Weigh the basic raw materials and enhancers in proportion, and set aside;

[0020] (2) Smelting: first add 45% pure copper ingots, heat to 1300°C after the pure copper ingots are melted, then add Bi, Zn, Sn, Nb, C in turn, stir evenly and keep the ...

Embodiment 2

[0024] A copper alloy for a valve, the copper alloy includes a strengthening agent and a basic raw material, and the copper alloy is obtained by strengthening the basic raw material through a strengthening agent; in terms of mass percentage, the composition of the basic raw material is: Bi1.0%, Zn 20%, Nb 1%, Zr 5%, Ni 0.5%, Sn 0.5%, C 0.5%, the balance is copper and unavoidable impurities; the strengthening agent is selected from silicon carbide.

[0025] The mass ratio of the reinforcing agent to the basic raw material is 1:100.

[0026] The particle size of the reinforcing agent is 3-5 microns.

[0027] A kind of preparation method of valve, adopts above-mentioned copper alloy for valve, and its specific steps are:

[0028] (1) Weigh the basic raw materials and enhancers in proportion, and set aside;

[0029] (2) Melting: first add 40% pure copper ingots, heat to 1200°C after the pure copper ingots are melted, then add Bi, Zn, Sn, Nb, C in turn, stir evenly and keep the t...

Embodiment 3

[0033] A copper alloy for a valve, the copper alloy includes a strengthening agent and a basic raw material, and the copper alloy is obtained by strengthening the basic raw material through a strengthening agent; in terms of mass percentage, the composition of the basic raw material is: Bi 0.9%, Zn 10 %, Nb 0.5%, Zr 3%, Ni 0.3%, Sn 0.2%, C 0.8%, the balance is copper and unavoidable impurities; the strengthening agent is selected from silicon carbide.

[0034] The mass ratio of the reinforcing agent to the basic raw material is 5:100.

[0035] The particle size of the reinforcing agent is 3-5 microns.

[0036] A kind of preparation method of valve, adopts above-mentioned copper alloy for valve, and its specific steps are:

[0037] (1) Weigh the basic raw materials and enhancers in proportion, and set aside;

[0038] (2) Smelting: first add 45% pure copper ingots, heat to 1300°C after the pure copper ingots are melted, then add Bi, Zn, Sn, Nb, C in turn, stir evenly and keep ...

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Abstract

The invention belongs to the technical field of alloys, and particularly relates to a copper alloy for a valve and a valve preparation method. The copper alloy is obtained by strengthening a basic raw material by means of a strengthening agent, the basic raw material comprises the following components, in percentage by mass, of 0.8% to 1.0% of Bi, 10% to 20% of Zn, 0.5% to 1% of Nb, 1% to 5% of Zr, 0.3% to 0.8% of Ni, 0.2% to 0.7% of Sn, 0.5% to 1% of C and the balance copper and inevitable impurities, and the strengthening agent is selected from silicon carbide. The obtained copper alloy for the valve and the valve made of the copper alloy are resistant to corrosion and abrasion, good in cutting performance, high in safety, resistant to chilling and shock heating and good in cold and hot machining performance and can be suitable for various application environments.

Description

technical field [0001] The invention belongs to the technical field of alloys, and in particular relates to a copper alloy for valves and a valve preparation method. Background technique [0002] Copper alloy valve is a kind of valve. Because of its strong corrosion resistance, copper alloy has been fully used in valves and valve parts. It plays a key role in many fields, but copper valves also have Some defects, such as: low wear resistance, low strength, and inability to withstand extreme cold and heat, lead to a shorter service life of the valve and more limited application scenarios. Contents of the invention [0003] In view of the above problems, the present invention proposes a copper alloy for valves and a valve preparation method. The copper alloy for valves obtained by the present invention and the valves made of the alloy are corrosion-resistant, wear-resistant, good in cutting performance, high in safety, It is resistant to shock and heat, and has good cold an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C32/00B22C9/24B22D27/20C22C1/10C22C1/02
CPCC22C9/04C22C32/0063C22C1/1036B22C9/24B22D27/20C22C1/1047
Inventor 王朝阳金昌锡祝云霞杨月红胡朝辉王帅杨骑峰王玉堂戴春光
Owner NINGBO HUACHENG VALVE
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