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Hypereutectic high-chromium alloy white cast iron chute lining plate and preparation method thereof

A high-chromium alloy and white cast iron technology, applied in the field of metal wear-resistant materials, can solve problems such as insufficient wear resistance, achieve improved wear resistance, high temperature resistance, wear resistance and corrosion resistance, hardness and carbide The effect of increased hardness

Active Publication Date: 2017-04-26
YINGKOU LONGCHEN MINE VEHICLE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of insufficient wear resistance existing in the prior art of iron and steel blast furnace distribution chute liners, and to provide a hypereutectic high chromium wear-resistant alloy white cast iron material for high hardness chute liners

Method used

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  • Hypereutectic high-chromium alloy white cast iron chute lining plate and preparation method thereof
  • Hypereutectic high-chromium alloy white cast iron chute lining plate and preparation method thereof
  • Hypereutectic high-chromium alloy white cast iron chute lining plate and preparation method thereof

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Embodiment 1

[0045] The chute lining plate of this embodiment is made of hypereutectic high-chromium alloy white cast iron material, which is composed of the following chemical components in mass fractions: C3.5%, Si0.4%, Mn0.9%, Cr25.0%, Mo1. 2%, W1.8%, Cu0.6%, V0.48%, Ti0.28%, Nb0.11%, Zr0.08%, RE0.08%, Y0.02%, B0.0028%, S0. 037%, P0.028%, and the rest is Fe.

[0046] The preparation method of the hypereutectic high chromium alloy white cast iron material for the chute liner of the present embodiment comprises the following steps:

[0047] ⑴ Add scrap steel, high-carbon ferrochrome, ferromolybdenum, ferrotungsten, scrap brass and other metal materials to the furnace for melting, and the melting temperature is 1540°C;

[0048] (2) Composition analysis in front of the furnace to adjust the balance of C and Cr;

[0049] (3) Add ferromanganese for deoxidation, add silicon aluminum calcium barium compound refining deoxidizer, refining deoxidation;

[0050] (4) Add ferro-vanadium, ferroniob...

Embodiment 2

[0057] The chute liner of this embodiment is made of hypereutectic high-chromium alloy white cast iron material, which is composed of the following chemical components in mass fractions: C3.66%, Si0.41%, Mn1.0%, Cr26.0%, Mo1. 1%, W1.75%, Cu0.5%, V0.5%, Ti0.25%, Nb0.12%, Zr0.07%, B0.025%, RE0.07%, Y0.03%, S0. 043%, P0.022%, and the rest is Fe.

[0058] The preparation method of the hypereutectic high chromium alloy white cast iron material for the chute liner of the present embodiment comprises the following steps:

[0059] ⑴ Add scrap steel, high-carbon ferrochrome, ferromolybdenum, ferrotungsten, scrap brass and other metal materials to the melting furnace for melting, and the melting temperature is 1550°C;

[0060] (2) Composition analysis in front of the furnace to adjust the balance of C and Cr;

[0061] (3) Add ferromanganese for deoxidation, add silicon aluminum calcium barium compound refining deoxidizer, refining deoxidation;

[0062] (4) Add ferro-vanadium, ferroni...

Embodiment 3

[0069] The chute lining plate of this embodiment is made of hypereutectic high-chromium alloy white cast iron material, which is composed of the following chemical components in mass fractions: C4.01%, Si0.48%, Mn0.82%, Cr28.0%, Mo0.95 %, W1.62%, Cu0.4%, V0.45%, Ti0.24%, Nb0.15%, Zr0.06%, RE0.06%, Y0.04%, B0.024%, S0.041 %, P0.028%, and the rest is Fe.

[0070] The preparation method of the hypereutectic high chromium alloy white cast iron material for the chute liner of the present embodiment comprises the following steps:

[0071] ⑴ Add scrap steel, high-carbon ferrochromium, ferromolybdenum, ferrotungsten, scrap brass and other metal furnace materials to the melting furnace for melting, and the melting temperature is 1560°C;

[0072] (2) Composition analysis in front of the furnace to adjust the balance of C and Cr;

[0073] (3) Add ferromanganese for deoxidation, add silicon aluminum calcium barium compound refining deoxidizer, refining deoxidation;

[0074](4) Add ferr...

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Abstract

The invention relates to a hypereutectic high-chromium alloy white cast iron chute lining plate and a preparation method thereof. The chute lining plate is prepared from a high-hardness hypereutectic high-chromium abrasion-resistant white alloy cast iron material which comprises the following chemical ingredients: 3.5-5.0% of C, 0.3-0.8% of Si, 0.5-1.0% of Mn, 25.0-35.0% of Cr, 0.8-1.2% of Mo, 0.2-0.6% of Cu, 1.0-1.8% of W, 0.3-0.5% of V, 0.1-0.3% of Ti, 0.1-0.3% of Nb, 0.03-0.08% of Zr, 0.001-0.003% of B, 0.02-0.08% of Re, 0.02-0.08% of Y, no less than 0.06% of S, no less than 0.06% of P and the balance of Fe. Compared with a conventional chute lining plate, the chute lining plate prepared by adopting the material involved in the invention has the advantages that the service life is greatly prolonged and the iron yield is greatly improved; the product manufacturing cost of the chute lining plate provided by the invention is basically equal to that of the conventional chute lining plate; and the cost performance advantage is obvious.

Description

technical field [0001] The invention relates to a hypereutectic high-chromium alloy white cast iron material used for a lining plate of a distribution chute of a steel blast furnace, and also relates to a preparation method of the material, which belongs to the field of metal wear-resistant materials. [0002] technical background [0003] (1) The lining plate of the distribution chute of the iron-making blast furnace of the iron and steel enterprise is the key wear-resistant spare part of the blast furnace equipment. The working position of the chute liner is on the top of the blast furnace, and the working environment is very harsh. It needs to withstand the impact and wear of high-hardness and sharp-edged ore, large drop impact and high-temperature furnace gas corrosion (generally, the normal working temperature is 200-320 ° C, abnormal thermal shock It can reach 500-700°C), which is an extreme wear condition. It is required that the liner has high wear resistance, high t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/06C21D1/26C21D1/18C21D5/04C21C7/06C21C7/00C21B7/20
CPCC21B7/20C21C7/0006C21C7/06C21D1/18C21D1/26C21D5/04C22C37/06C22C37/10Y02P10/20
Inventor 陈熙张国民
Owner YINGKOU LONGCHEN MINE VEHICLE MFG CO LTD
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