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Production process for steel casting of martensitic wear-resistant steel

A production process and technology of wear-resistant steel, applied in the field of wear-resistant steel, which can solve the problems of difficult to meet the use requirements, fracture, low toughness, etc.

Inactive Publication Date: 2013-12-11
湖北洪伯车辆有限公司
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Problems solved by technology

The main problem is that the wear resistance of alloy steel is improved, but the toughness is very low, it is easy to break during use, and it is difficult to meet the use requirements

Method used

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Embodiment Construction

[0009] A steel casting production process of martensitic wear-resistant steel, the chemical composition of the martensitic wear-resistant steel is: C: 0.4%, Si: 0.7%, Cr: 1.3%, Mn: 1 %, Ni: 0.7%~1.2%, Mo: 0.6%~0.8%, V: 0.2%~0.5%, Ti: 0.1%~0.5%, Re: 0.07%~0.09%, P, S≤0.04, balance For iron, the production process is as follows: 1) Add scrap steel, pig iron, ferrochrome, sponge iron, and 1-1.5% of the total mass of the above-mentioned raw materials into an induction furnace for mixing, heating and melting. The smelting additive is made of sodium oxide 10 -15 parts, 3.5-4.5 parts of alumina, 3-5 parts of potassium oxide, 6-8 parts of sodium carbonate, 4-6 parts of silicon dioxide, 11-15 parts of iron oxide, 0.5-2 parts of titanium dioxide, 5 parts of anhydrous borax - Prepared in 10 parts, and adjust the content of chemical components according to requirements. When the temperature reaches 900°C-1200°C, a mixed inert gas of 1-2L / min argon and helium is introduced into the inducti...

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Abstract

The invention discloses a production process for a steel casting of martensitic wear-resistant steel. The martensitic wear-resistant steel comprises the chemical components by the weight percentage: 0.3%-0.5% of C, 0.4%-0.9% of Si, 1.1%-1.8% of Cr, 0.8%-1.5% of Mn, 0.7%-1.2% of Ni, 0.6%-0.8% of Mo, 0.2%-0.5% of V, 0.1%-0.5% of Ti, 0.07%-0.09% of Re, not more than 0.04% of P and S, and the balance being Fe. The production process comprises the following steps: 1) scrap steel, pig iron, ferrochrome, sponge iron and a smelting additive with an amount of 1-1.5% based on the total mass of the above raw materials are added to an induction furnace for mixing and heating to melt, wherein the smelting additive is prepared from 10-15 parts of sodium oxide, 3.5-4.5 parts of aluminum oxide, 3-5 parts of potassium oxide, 6-8 parts of sodium carbonate, 4-6 parts of silicon dioxide, 11-15 parts of iron oxide, 0.5-2 parts of titanium dioxide, and 5-10 parts of anhydrous borax, and the contents of the chemical components are adjusted according to requirements. Under a condition of relatively low shock, the martensitic wear-resistant steel is applied in ball mill lining plates of metallurgical mines, hammerheads of hammer mills and the like, is applicable to wear-resistant products of gold mines, iron mines, cement and other types of mines, and is a new wear-resistant material instead of conventional high manganese steel.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant steel in the iron and steel metallurgical foundry industry, and in particular relates to a martensitic wear-resistant steel and a production process for steel castings thereof. Background technique [0002] In recent years, metallurgical wear-resistant products have developed rapidly at home and abroad, and have attracted much attention from all walks of life. Both at home and abroad are looking for new materials and new methods to replace high manganese steel with alloy steel, but with little success. The main problem is that the wear resistance of alloy steel is improved, but the toughness is very low, and it is easy to break during use, so it is difficult to meet the use requirements. Contents of the invention [0003] The purpose of the present invention is to provide a production process of martensitic wear-resistant steel castings. The material wear-resistant steel is used in m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/50C22C33/06C21D1/18B22C9/08
CPCY02P10/20
Inventor 瞿立双
Owner 湖北洪伯车辆有限公司
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