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Bronze alloy material for valve casting and treatment process thereof

A bronze alloy and alloy material technology, applied in the field of bronze alloy material for valve casting and its processing technology, can solve the problems of poor high temperature resistance, low abrasion resistance, short service life, etc. Grinding ability and improving service life

Active Publication Date: 2015-02-11
盐城市大丰区亿然阀门有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the application of valves plays a key role in many fields. Because copper valves have strong corrosion resistance, copper valves are widely used, but copper valves also have defects, such as: low abrasion resistance, poor high temperature resistance, low strength, Short service life, etc. To address these defects, the present invention proposes a bronze alloy material for valve casting and its treatment process, which improves the friction resistance and high temperature resistance of copper valves, increases their strength and service life, and reduces costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a bronze alloy material for valve casting, the mass percentage of the chemical composition of the alloy coating is: C: 0.55%, Mn: 0.33%, Cr: 2.25%, Ni: 4.35%, Mo: 0.52 %, W: 0.38%, V: 0.12%, Nb: 0.11%, Zn: 22.3%, rare earth: 0.25%, the rest is Cu and trace impurities;

[0030]Among the rare earths, the following components are included by weight percentage: Pu: 14.56%, Pr: 21.3%, Gd: 3.88%, Ac: 7%, Nd: 5.8%, Sm: 11%, Ce: 15%, Lu: 13% , the balance is La; present embodiment also provides a kind of processing technology for the bronze alloy material of valve casting:

[0031] Step (1): During the smelting process of the electric arc furnace, the furnace temperature is first raised to 700°C and then the bronze alloy material is added;

[0032] Step (2): After refining in LF furnace, the refining temperature is 1660°C, the composition is fine-tuned, the time is 3 hours, blowing nitrogen and stirring throughout the process, so that the chemical comp...

Embodiment 2

[0038] This embodiment provides a bronze alloy material for valve casting, the mass percentage of the chemical composition of the alloy coating is: C: 0.58%, Mn: 0.36%, Cr: 2.45%, Ni: 4.55%, Mo: 0.55 %, W: 0.40%, V: 0.15%, Nb: 0.13%, Zn: 22.5%, rare earth: 0.28%, the rest is Cu and trace impurities;

[0039] Among the rare earths, the following components are contained by weight percentage: Pu: 14.58%, Pr: 21.5%, Gd: 3.90%, Ac: 9%, Nd: 6.0%, Sm: 13%, Ce: 17%, Lu: 15% , the balance is La; present embodiment also provides a kind of processing technology for the bronze alloy material of valve casting:

[0040] Step (1): During the smelting process of the electric arc furnace, the furnace temperature is first raised to 650°C and then the bronze alloy material is added;

[0041] Step (2): After refining in LF furnace, the refining temperature is 1655°C, the composition is fine-tuned, the time is 2.5 hours, blowing nitrogen and stirring throughout the process, so that the chemical ...

Embodiment 3

[0047] This embodiment provides a bronze alloy material for valve casting, the mass percentage of the chemical composition of the alloy coating is: C: 0.56%, Mn: 0.35%, Cr: 2.35%, Ni: 4.45%, Mo: 0.54 %, W: 0.39%, V: 0.13%, Nb: 0.12%, Zn: 22.4%, rare earth: 0.26%, the rest is Cu and trace impurities;

[0048] Among the rare earths, the following components are included by weight percentage: Pu: 14.57%, Pr: 21.4%, Gd: 3.89%, Ac: 8%, Nd: 5.9%, Sm: 12%, Ce: 16%, Lu: 14% , the balance is La; present embodiment also provides a kind of processing technology for the bronze alloy material of valve casting:

[0049] Step (1): During the smelting process of the electric arc furnace, the furnace temperature is first raised to 600°C and then the bronze alloy material is added;

[0050] Step (2): After refining in LF furnace, the refining temperature is 1650°C, the composition is fine-tuned, the time is 2 hours, blowing nitrogen and stirring throughout the process, so that the chemical com...

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Abstract

The invention discloses a bronze alloy material for valve casting. The alloy material contains the chemical ingredients in percentage by mass: 0.55-0.58% of C, 0.33-0.36% of Mn, 2.25-2.45% of Cr, 4.35-4.55% of Ni, 0.52-0.55% of Mo, 0.38-0.40% of W, 0.12-0.15% of V, 0.11-0.13% of Nb, 22.3-22.5% of Zn, 0.25-0.28% of rare earth and the balance of Cu and trace impurities. The invention further discloses a treatment process of the bronze alloy material for valve casting. According to the bronze alloy material for valve casting and the treatment process thereof, the corrosion resistance, wear resistance and oxidation resistance of valves are improved, the valves can adapt to various harsh environments and are high in strength and long in service lives, the cost is reduced, and the high-temperature resistance is improved.

Description

technical field [0001] The invention relates to a bronze alloy material used for valve casting, in particular to a bronze alloy material used for valve casting and its treatment process. Background technique [0002] At present, the application of valves plays a key role in many fields. Because copper valves have strong corrosion resistance, copper valves are widely used, but copper valves also have defects, such as: low abrasion resistance, poor high temperature resistance, low strength, Short service life, etc. To address these defects, the present invention proposes a bronze alloy material for valve casting and its treatment process, which improves the friction resistance and high temperature resistance of copper valves, increases their strength and service life, and reduces costs. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a bronze alloy material for valve casting and its treatment process in view of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/02C22F1/08
CPCC22C1/02C22C9/04C22F1/08
Inventor 王亚军
Owner 盐城市大丰区亿然阀门有限公司
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