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Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof

A wear-resistant alloy, high-hardness technology, applied in the field of metal wear-resistant materials, can solve the problem of not being able to meet high hardness and high impact toughness at the same time, and achieve the effects of increasing hardness, enhancing stability, and improving red hardness

Inactive Publication Date: 2013-05-08
驻马店市三山耐磨材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Cast iron with this chemical composition is used for subsequent heat treatment, and the maximum hardness can reach 59-64HRC, but it cannot meet the requirements of high hardness and high impact toughness at the same time

Method used

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  • Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof
  • Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The high-hardness wear-resistant alloy cast iron material used for the chute liner of this embodiment consists of the following chemical components in mass fractions: C2.7%, Si0.4%, Mn0.9%, Cr21.5%, Mo1.0%, Cu1.1%, W0.6%, V0.2%, Ti0.07%, B0.001%, RE0.05%, Y0.05%, Al0.07%, S≤0.06%, P≤0.06%, The rest is Fe.

[0035] The preparation method of the high-hardness wear-resistant alloy cast iron material for the chute liner of the present embodiment comprises the following steps:

[0036] 1) Add scrap steel, ferrochrome, ferromolybdenum, ferrotungsten, scrap brass, ferromanganese, ferrovanadium, ferrotitanium and ferroboron to the melting furnace in sequence according to the formula to melt into molten iron at a melting temperature of 1520°C;

[0037] 2) Add rare earth silicon with a particle size of 5mm to the molten iron according to the formula for one-time modification treatment. When the temperature measured by the thermometer is 1520-1560°C, pour out the molten iron;

...

Embodiment 2

[0041] The high-hardness wear-resistant alloy cast iron material used for the chute liner of this embodiment consists of the following chemical components in mass fractions: C2.6%, Si0.65%, Mn1.0%, Cr22.5%, Mo1.1%, Cu1.0%, W0.8%, V0.1%, Ti0.09%B0.003%, RE0.07%, Y0.07%, Al0.04%, S≤0.06%, P≤0.06%, the rest For Fe.

[0042] The preparation method of the high-hardness wear-resistant alloy cast iron material for the chute liner of the present embodiment comprises the following steps:

[0043] 1) Add steel scrap, ferrochrome, ferromolybdenum, ferrotungsten, scrap brass, ferromanganese, ferrovanadium, ferrotitanium and ferroboron to the melting furnace in sequence according to the recipe amount to melt into molten iron at a melting temperature of 1540°C;

[0044] 2) Add rare earth silicon with a particle size of 8mm to the molten iron according to the formula for one-time modification treatment. When the temperature measured by the thermometer is 1520-1560°C, pour out the molten iro...

Embodiment 3

[0048] The high-hardness wear-resistant alloy cast iron material used for the chute liner of this embodiment consists of the following chemical components in mass fractions: C3.0%, Si1.0%, Mn0.75%, Cr23%, Mo1.2%, Cu0. 8%, W0.75%, V0.19%, Ti0.12%, B0.0028%, RE0.04%, Y0.04%, Al0.08%, S≤0.06%, P≤0.06%, the rest are Fe.

[0049] The preparation method of the high-hardness wear-resistant alloy cast iron material for the chute liner of the present embodiment comprises the following steps:

[0050] 1) Add steel scrap, ferrochrome, ferromolybdenum, ferrotungsten, scrap brass, ferromanganese, ferrovanadium, ferrotitanium and ferroboron to the melting furnace in sequence according to the formula to melt into molten iron, and the melting temperature is 1560°C;

[0051] 2) Add rare earth silicon with a particle size of 6mm to the molten iron according to the formula for one-time modification treatment. When the temperature measured by the thermometer is 1520-1560°C, pour out the molten i...

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Abstract

The invention discloses an abrasion-resistant alloy cast iron material with high hardness for a chute lining plate, and a preparation method thereof. The abrasion-resistant alloy cast iron material comprises the following chemical components in percentage by weight: 2.6-3.0% of C, 0.3-1.0% of Si, 0.5-1.0% of Mn, 21-23% of Cr, 0.8-1.2% of Mo, 0.8-1.2% of Cu, 0.6-0.9% of W, 0.1-0.2% of V, 0.06-0.12% of Ti, 0.001-0.003% of B, 0.04-0.08% of RE, 0.04-0.08% of Y, 0.04-0.08% of Al, less than or equal to 0.06% of S, less than or equal to 0.06% of P and the balance of Fe. According to the abrasion-resistant alloy cast iron material provided by the invention, the hardness of the abrasion-resistant alloy cast iron material is improved by controlling the content of chromium element and the proportion of Cr / C. Noble metal elements such as Mo, W, V, Ti and Cu are added into the cast iron, and through complex use of the noble metal elements, the stability of austenite is enhanced, grains are refined, and the high temperature stability and red hardness of carbides are improved, so that the hardness of the cast iron material provided by the invention is further improved, and the abrasive resistance is correspondingly improved. The average hardness of the alloy cast iron material provided by the invention can reach over HRC63, and the impact toughness aK of the alloy cast iron material can reach 5J / cm<2>.

Description

technical field [0001] The invention relates to a high-hardness wear-resistant alloy cast iron material for a chute lining plate, and also relates to a preparation method of the material, which belongs to the field of metal wear-resistant materials. Background technique [0002] Chromium wear-resistant cast iron originated in the early twentieth century, but its wide application began after the end of World War II. For more than half a century, domestic and foreign foundry workers have conducted a lot of research on the role of chromium in cast iron, which has continuously improved the performance of chromium-based wear-resistant cast iron and gradually simplified the production process. The research and application of chromium-based wear-resistant cast iron in my country has experienced a historical development stage from low-chromium cast iron to high-chromium cast iron. Among them, high-chromium cast iron materials developed rapidly in the late 1970s. High chromium cast ...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C33/08C21D5/00
Inventor 李固成禹彬王安民陈硕
Owner 驻马店市三山耐磨材料有限公司
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