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Highly-wear-resistant alloy steel material used for pump trucks and preparation method of the alloy steel material

A technology of high wear-resistant alloy steel, which is applied in the field of high wear-resistant alloy steel materials for pump trucks and its preparation, can solve the problems of high requirements and bad conditions, achieve long service life, increase yield, and good corrosion resistance Effect

Inactive Publication Date: 2014-03-05
TONGLING JINGWEI FLUID SCI & TECH
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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 high wear-resistant alloy steel material for pump trucks, which contains chemical element components and mass percentages: carbon 0.2-0.4, silicon 1.4-1.7, manganese 4.2-4.4, chromium 1.7-2.1, molybdenum 0.4-0.7, aluminum 0.1-0.3, boron 0.3-0.5, titanium 0.5-0.8, La0.04-0.07, S≤0.04, P≤0.04, the balance is iron.

[0014] The production method of the high wear-resistant alloy steel material for the pump truck is as follows:

[0015] (1) Prepare pig iron and scrap iron as the source of iron matrix at a ratio of 1:0.7, put pig iron into the furnace for melting, desulfurize, deoxidize, 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 added to the furnace during the alloying process is: (1) silicon, mangan...

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PUM

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Abstract

The invention discloses a highly-wear-resistant alloy steel material used for pump trucks. The alloy steel material comprises following chemical elements by weight: 0.2-0.4% of carbon, 1.4-1.7% of silicon, 4.2-4.4% of manganese, 1.7-2.1% of chromium, 0.4-0.7% of molybdenum, 0.1-0.3% of aluminum, 0.3-0.5% of boron, 0.5-0.8% of titanium, 0.04-0.07% of La, S not more than 0.04% and P not more than 0.04%, with the balance being iron. The alloy steel has high hardness, good wear resistance, high toughness, good plasticity, good corrosion resistance and long service lifetime, and is suitable for working in highly-wearing environments such as pump truck tank bodies, delivery pipes, and the like. A portion of waste iron is used as a raw material of the alloy steel material and a secondary refining process is performed so that the quality of the alloy steel material is stable and uniform. A refining agent provided by the invention is used for casting production and is capable of increasing the rate of finished products, reducing the porosity degree in castings by 1-2 degrees, avoiding air hole generation on casting surfaces and reducing significantly oxide inclusion which is about at the 2 level.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a high wear-resistant alloy steel material for pump trucks 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 high wear-resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C33/04C21D6/00
Inventor 吴寿涛
Owner TONGLING JINGWEI FLUID SCI & TECH
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