Wear resistant high-carbon steel pump valve material and preparation method thereof

A high-carbon steel and pump valve technology, which is applied in the field of wear-resistant high-carbon steel pump valve materials and its preparation, can solve the problems of high requirements and harshness, and achieve the effects of long service life, increased yield, and high heat strength

Inactive Publication Date: 2014-12-17
ANHUI RONGDA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]Pumps and valves work in various and harsh environments, and have high requirements for materials. At present, there are many kinds of alloy steels used for pumps and valves, and the technology has made great progress, but There are still many problems, such as wear resistance, hardness, antirust performance, corrosion resistance, high and low temperature resistance, brittleness, toughness, etc., which cannot meet the production requirements in many occasions, and further improvement is needed to increase production efficiency. , reduce costs, improve safety, provide guarantee for the development of high-precision technology, and provide impetus for social development, the task is still very arduous

Method used

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Embodiment Construction

[0013] A wear-resistant high-carbon steel pump valve material, which contains chemical elements and mass percentages: carbon 2.2-2.4, silicon 1.2-1.4, manganese 2.1-2.3, molybdenum 0.7-0.9, nickel 0.05-0.08, vanadium 0.7 -0.9, Titanium 1.2-1.4, Ta0.04-0.07, S≤0.04, P≤0.04, and the balance is iron.

[0014] The production method of the wear-resistant high carbon steel pump valve material is as follows:

[0015] (1) Prepare pig iron and scrap iron as the source of iron matrix in a ratio of 1:2.5, put pig iron into the furnace for melting, perform desulfurization, deoxidation, use refining agent for one-time refining, add alloy components for alloying, and then add scrap iron to melt , adding refining agent for secondary refining, testing and adjusting the content of chemical elements to pass, casting, post-casting heat treatment, etc.;

[0016] (2) The order of batches of alloying elements put into the furnace during the alloying process is: (1) silicon, manganese, Ta; (2) moly...

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PUM

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Abstract

The invention discloses a wear resistant high-carbon steel pump valve material. The wear resistant high-carbon steel pump valve material comprises the following chemical elements in percentage by mass: 2.2-2.4% of carbon, 1.2-1.4% of silicon, 2.1-2.3% of manganese, 0.7-0.9% of molybdenum, 0.05-0.08% of nickel, 0.7-0.9% of vanadium, 1.2-1.4% of titanium, 0.04-0.07% of Ta, not more than 0.04% of S, not more than 0.04% of P, and the balance iron. The elements of molybdenum, vanadium and titanium are added in alloy steel based on high-carbon or low-carbon steel, so that the alloy steel not only maintains the high strength and the high hardness of the high-carbon steel but also has the characteristics of high thermal strength, good wear resistance and better toughness; and one part of waste steel serves as a raw material, and is refined twice, so that the quality is more stable and uniform. A refining agent is used for producing castings, so that the porosity is reduced by 1-2 degrees, and the oxide inclusion is at about grade 2. The alloy steel is applied to parts with high-temperature operation and high abrasion, and is long in service life.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a wear-resistant high-carbon steel pump valve material and a preparation method thereof. Background technique [0002] The working environment of pump valves is diverse and harsh, and the requirements for materials are very high. At present, there are many kinds of alloy steel used in pump valves, and the technology has made great progress, but there are still many problems, such as wear resistance, hardness, rust resistance Performance, corrosion resistance, high and low temperature resistance, brittleness, toughness, etc., cannot meet the production requirements in many occasions, and further improvement is needed to improve production efficiency, reduce costs, and improve safety. Guaranteeing and providing impetus for social development are still arduous tasks. Contents of the invention [0003] The object of the present invention is to provide a wear-resistant hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/14C22C33/04
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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