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A high chromium alloy wear-resistant lining plate for impact crusher and its preparation method

An impact crusher and high-chromium alloy technology, applied in the field of wear-resistant materials, can solve the problems of uneven product particle size, decreased production efficiency, short service life, etc., and achieve good strength, improve strength, wear resistance, and service life. long effect

Active Publication Date: 2017-12-29
安徽中建材开源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, the liner is an important part of the impact crusher, and it is prone to serious wear and tear due to frequent strong impacts during use.
Liner wear will lead to problems such as uneven particle size, reduced production efficiency and increased energy consumption
At present, the liners of impact crushers are generally made of high manganese steel and high chromium cast iron, but there are problems such as easy deformation, poor wear resistance, and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-chromium alloy wear-resistant liner for an impact crusher, the liner contains the following alloying elements in mass percentages: C 2.3%, Mn 1.4%, Si 0.7%, Cr 14%, Ni 0.9%, B 0.22% , Mo 0.38%, Cu 0.32%, Re 0.12%, Rh 0.09%, the balance is Fe and unavoidable impurities, and the lining plate also contains ZrC powder accounting for 3% of the total mass of high chromium cast iron.

[0018] A method for preparing a high chromium alloy wear-resistant liner for an impact crusher, comprising the following steps:

[0019] 1) Smelting: Add steel scrap, pig iron, ferronickel, ferromolybdenum, and scrap copper into the intermediate frequency electric furnace, heat and melt, and the melting temperature is 1570-1600°C. After the molten steel is completely melted, add roasted red ferrochrome to it and borax, and finally add ferromanganese, ferrosilicon, and ferrohodium to adjust the composition of each element in molten steel;

[0020] 2) Casting: Pour the smelted molten steel...

Embodiment 2

[0023] A high-chromium alloy wear-resistant liner for an impact crusher, the liner contains the following alloying elements in mass percentages: C 2.2%, Mn 1.3%, Si 0.6%, Cr 15%, Ni 0.8%, B 0.20% , Mo 0.36%, Cu 0.3%, Re 0.13%, Rh 0.07%, the balance is Fe and unavoidable impurities, and the lining plate also contains ZrC powder accounting for 2.5% of the total mass of high chromium cast iron.

[0024] A method for preparing a high chromium alloy wear-resistant liner for an impact crusher, comprising the following steps:

[0025] 1) Smelting: Add steel scrap, pig iron, ferronickel, ferromolybdenum, and scrap copper into the intermediate frequency electric furnace, heat and melt, and the melting temperature is 1570-1600°C. After the molten steel is completely melted, add roasted red ferrochrome to it and borax, and finally add ferromanganese, ferrosilicon, and ferrohodium to adjust the composition of each element in molten steel;

[0026] 2) Casting: Pour the smelted molten stee...

Embodiment 3

[0029] A high-chromium alloy wear-resistant liner for an impact crusher, the liner contains the following alloying elements in mass percentages: C 2.1%, Mn 1.5%, Si 0.5%, Cr 15%, Ni 0.7%, B 0.23% , Mo 0.35%, Cu 0.35%, Re 0.09%, Rh 0.10%, the balance is Fe and unavoidable impurities, and the lining plate also contains ZrC powder accounting for 2.5% of the total mass of high chromium cast iron.

[0030] A method for preparing a high chromium alloy wear-resistant liner for an impact crusher, comprising the following steps:

[0031] 1) Smelting: Add steel scrap, pig iron, ferronickel, ferromolybdenum, and scrap copper into the intermediate frequency electric furnace, heat and melt, and the melting temperature is 1570-1600°C. After the molten steel is completely melted, add roasted red ferrochrome to it and borax, and finally add ferromanganese, ferrosilicon, and ferrohodium to adjust the composition of each element in molten steel;

[0032] 2) Casting: Pour the smelted molten ste...

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Abstract

The invention discloses a high-chromium alloy wear resistant lining plate for an impact crusher and a preparation method thereof. The lining plate comprises the following alloy elements in percentage by mass: 2.0-2.8% of C, 1.0-1.5% of Mn, 0.3-0.8% of Si, 13-16% of Cr, 0.5-1.0% of Ni, 0.12-0.25% of B, 0.30-0.45% of Mo, 0.22-0.40% of Cu, 0.05-0.15% of Re, 0.05-0.15% of Rh, and the balance of Fe and inevitable impurities. The lining plate further comprises ZrC powder being 2-4% of total mass of high-chromium cast iron. The prepared high-chromium alloy wear resistant lining plate is excellent in quality, high in strength, excellent in wear resistance, not easy to deform and break and long in service life, and is 5-7 times of the life of a general high-chromium alloy wear resistant lining plate.

Description

technical field [0001] The invention relates to the technical field of wear-resistant materials, in particular to a high-chromium alloy wear-resistant liner for an impact crusher and a preparation method thereof. Background technique [0002] The impact crusher is a new type of high-efficiency crushing equipment. It can process materials with a side length of 100-500 mm or less. Its compressive strength can reach up to 350 MPa. It is suitable for crushing medium-hard materials. It has a large crushing ratio. The material is in the form of cubic particles and so on. Widely used in building materials, transportation, energy, cement, mining, chemical and other industries. As we all know, the liner is an important part of the impact crusher, and it is prone to serious wear and tear due to frequent strong impacts during use. Liner wear will lead to problems such as uneven product particle size, reduced production efficiency and increased energy consumption. At present, high ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C38/56C22C38/02C22C38/04C22C38/54C22C38/44C22C38/42C22C32/00C21D5/00C21D6/00B02C13/282
CPCB02C13/282C21D5/00C21D6/004C22C32/0052C22C37/06C22C37/08C22C37/10C22C38/002C22C38/005C22C38/02C22C38/04C22C38/42C22C38/44C22C38/54C22C38/56
Inventor 汪德发徐超孙成芳赵文定夏胜华匡和平
Owner 安徽中建材开源新材料科技有限公司
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