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Alloy material for high-temperature-resistant pump valve and production process thereof

A technology of alloy material and production process, which is applied in the field of alloy materials for high temperature resistant pumps and valves, can solve problems such as the inability of high temperature resistance performance to meet production requirements, and achieve the effects of energy-saving and high-efficiency production, simple production process and high cost performance.

Inactive Publication Date: 2021-04-02
江苏椿宇机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a high-temperature-resistant alloy material for pump valves and its production process, which has the advantages of good high-temperature resistance, and solves the problem that the high-temperature resistance of alloy steel for pump valves currently on the market is far from being sufficient. To meet the production needs, it is urgent to start from the process and formula to obtain more high-quality and efficient stainless steel materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: An alloy material for high temperature resistant pump valves, including raw materials in the following proportions by weight: C: 3.0%, Si: 0.8%, Mn: 0.8%, Cr: 28.0%, Mo: 1.2 %, W: 0.9%, Cu: 1.2%, V: 0.5%, Ti: 0.15%, RE: 0.12%, S: 0.06%, P: 0.06%, refining agent 0.4%, the balance is Fe and unavoidable Impurities.

[0020] A production process of an alloy material for a high temperature resistant pump valve, comprising the following steps:

[0021] 1) Put all the raw materials except the refining agent into the melting furnace according to the weight ratio of the elements, heat to 1050°C for melting, then add the refining agent, stir and mix evenly, raise the temperature of the melt to 1570°C, refine for 60min, and finally put The resulting melt is poured into the mold cavity after deslagging and degassing;

[0022] 2) When pouring, pour according to the principle of "slow-fast-slow", start to flow slowly to prevent splashing, and then pour at full speed t...

Embodiment 2

[0024] Embodiment 2: An alloy material for high temperature resistant pump valves, including raw materials in the following proportions by weight: C: 2.65%, Si: 0.5%, Mn: 0.5%, Cr: 24.0%, Mo: 0.9%, W: 0.6%, Cu: 0.9%, V: 0.3%, Ti: 0.06%, RE: 0.04%, S: 0.04%, P: 0.04%, refining agent 0.3%, and the balance is Fe and unavoidable impurities.

[0025] A production process of an alloy material for a high temperature resistant pump valve, comprising the following steps:

[0026] 1) Put all raw materials except refining agent into the melting furnace according to the weight ratio of elements, heat to 1020°C for melting, then add refining agent, stir and mix evenly, heat up the melt to 1340°C, refine for 40min, and finally put The resulting melt is poured into the mold cavity after deslagging and degassing;

[0027] 2) When pouring, pour according to the principle of "slow-fast-slow", start to flow slowly to prevent splashing, and then pour at full speed to keep the sprue cup full. Whe...

Embodiment 3

[0029] Embodiment 3: An alloy material for high temperature resistant pump valves, including raw materials in the following proportions by weight: C: 2.82%, Si: 0.65%, Mn: 0.65%, Cr: 26.0%, Mo: 1.05%, W: 0.75%, Cu: 1.05%, V: 0.4%, Ti: 0.1%, RE: 0.08%, S: 0.05%, P: 0.05%, refining agent 0.35%, and the balance is Fe and unavoidable impurities.

[0030] A production process of an alloy material for a high temperature resistant pump valve, comprising the following steps:

[0031] 1) Put all raw materials except refining agent into the melting furnace according to the weight ratio of elements, heat to 1035°C for melting, then add refining agent, stir and mix evenly, heat up the melt to 1400°C, refine for 50min, and finally put The resulting melt is poured into the mold cavity after deslagging and degassing;

[0032] 2) When pouring, pour according to the principle of "slow-fast-slow", start to flow slowly to prevent splashing, and then pour at full speed to keep the sprue cup full...

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PUM

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Abstract

The invention relates to the technical field of alloy materials for high-temperature-resistant pump valves, and discloses an alloy material for a high-temperature-resistant pump valve. The alloy material comprises the following raw materials in percentage by weight: 2.65-3.0% of C, 0.5-0.8% of Si, 0.5-0.8% of Mn, 24.0-28.0% of Cr, 0.9-1.2% of Mo, 0.6-0.9% of W, 0.9-1.2% of Cu, 0.3-0.5% of V, 0.06-0.15% of Ti, 0.04-0.12% of RE, 0.04-0.06% of S, 0.04-0.06% of P, 0.3-0.4% of a refining agent, and the balance of Fe and unavoidable impurities. According to the alloy material for the high-temperature-resistant pump valve and a production process of the alloy material, Mo and W alloys and strong carbide forming elements such as V and Ti are added for compound use, V and Ti are the strong carbideforming elements, grains are refined, grain boundaries are purified, the form, size, number and distribution of carbide are improved, the effect of improving the comprehensive performance of the material is very obvious, and the high-temperature stability and red hardness of carbide are better, so that the pump valve shows higher wear resistance and high-temperature resistance in a high-temperature operation environment.

Description

technical field [0001] The invention relates to the technical field of alloy materials for high-temperature-resistant pump valves, in particular to an alloy material for high-temperature-resistant pump valves and a production process thereof. Background technique [0002] Pump valves are widely used in chemical industry, petrochemical, petroleum, papermaking, mining, electric power, liquefied gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronic industry and urban construction and other fields. Pumps are components that transport various media , and the valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium. Often used together. [0003] Since the pump valves are exposed to a variety of media, which may be water, steam, oil, gas, mud, various corrosive media, liquid metals, and radioactive fluids, etc., the performance requirements for pump ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/22C22C38/20C22C38/24C22C38/28C22C38/36C22C38/60C21D1/18B22D37/00
CPCB22D37/00C21D1/18C22C33/006C22C33/04C22C38/005C22C38/02C22C38/04C22C38/20C22C38/22C22C38/24C22C38/28C22C38/36C22C38/60
Inventor 柏加山戴亚洲郭霞余王健
Owner 江苏椿宇机械制造有限公司
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