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Wear-resistant white cast iron material and preparation method thereof

A cast iron and whitening technology, which is applied in the field of anti-wear white cast iron materials and its preparation, can solve the problems that restrict the application and development of medium chromium cast iron, and the high production cost of products, so as to improve the shape, improve the comprehensive performance, change the Effect of carbide morphology

Inactive Publication Date: 2012-07-04
驻马店市三山耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the chemical composition of traditional medium chromium cast iron still has not got rid of the dependence on precious alloys such as molybdenum and nickel (see Table 1-2), resulting in high production costs, which restricts the application of medium chromium cast iron to a certain extent And development

Method used

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  • Wear-resistant white cast iron material and preparation method thereof
  • Wear-resistant white cast iron material and preparation method thereof
  • Wear-resistant white cast iron material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The anti-wear white cast iron material of this embodiment is composed of the following elements by weight: C 2.2%, Si 0.8%, Mn 2%, Cr 10%, Cu 0.2%, V 0.06%, Ti 0.02%, B 0.001 %, Al 0.06%, Y 0.02%, S≤0.06%, P<0.06%, and the balance is iron. The cast iron material of this embodiment can be prepared by conventional cast iron production methods, without specific limitations, and a preparation method for a cast iron liner is given below:

[0023] Using a 750kg intermediate frequency electric furnace for smelting, the casting process of tidal quartz sand molding and riser feeding, according to the requirements of the above chemical composition material distribution process sheet, scrap steel, vanadium titanium pig iron, ferrochrome, and ferromanganese are used as the main raw materials, and other raw materials are used to make up Other chemical components: analyze the components in front of the furnace, adjust the balance of C and Cr, and deoxidize, and finally deoxidize. Aft...

Embodiment 2

[0029] The anti-wear white cast iron material of this embodiment is composed of the following elements by weight: C 2.65%, Si 0.8%, Mn 3.5%, Cr 8%, Cu 0.6%, V 0.15%, Ti 0.08%, B 0.002 %, Al 0.04%, Y 0.08%, S≤0.06%, P≤0.06%, and the balance is iron. The cast iron material of this embodiment can be prepared by conventional cast iron production methods, without specific limitations, and a preparation method for a cast iron liner is given below:

[0030] Using a 750kg intermediate frequency electric furnace for smelting, the casting process of tidal quartz sand molding and riser feeding, according to the requirements of the above chemical composition material distribution process sheet, scrap steel, vanadium titanium pig iron, ferrochrome, and ferromanganese are used as the main raw materials, and other raw materials are used to make up Other chemical components: analyze the components in front of the furnace, adjust the balance of C and Cr, and deoxidize, and finally deoxidize. A...

Embodiment 3

[0036] The wear-resistant white cast iron material of this embodiment is composed of the following elements in weight percentage: C 3.2%, Si 1.2%, Mn 2.8%, Cr 7%, Cu 1.2%, V 0.3%, Ti 0.15%, B 0.003 %, Al 0.02%, Y 0.15%, S≤0.06%, P≤0.06%, and the balance is iron. The cast iron material of this embodiment can be prepared by conventional cast iron production methods, without specific limitations, and a preparation method for a cast iron liner is given below:

[0037] Using a 750kg intermediate frequency electric furnace for smelting, the casting process of tidal quartz sand molding and riser feeding, according to the requirements of the above chemical composition material distribution process sheet, scrap steel, vanadium titanium pig iron, ferrochrome, and ferromanganese are used as the main raw materials, and other raw materials are used to make up Other chemical components or remove impurities in molten iron; conduct component analysis in front of the furnace, adjust the balanc...

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Abstract

The invention discloses a wear-resistant white cast iron material, which consists of the following elements in percentage by weight: 2.2 to 3.2 percent of C, less than or equal to 1.2 percent of Si, 2.0 to 3.5 percent of Mn, 7.0 to 10.0 percent of Cr, 0.2 to 1.2 percent of Cu, 0.06 to 0.3 percent of V, 0.02 to 0.15 percent of Ti, 0.001 to 0.003 percent of B, 0.02 to 0.06 percent of Al, 0.02 to 0.15 percent of RE, less than or equal to 0.06 percent of S, less than or equal to 0.06 percent of P, and the balance of Fe. The wear-resistant white cast iron material has the hardness (HRC) of more than or equal to 56, the impact toughness aK of more than or equal to 6J / cm<2>, and a metallographic structure consisting of martensite, carbide (M7C3+a small amount of M3C), secondary carbide and a small amount of retained austenite. The wear-resistant white cast iron material does not contain noble metals such as molybdenum, nickel and the like; and compared with the traditional medium-chromium cast iron material, the wear-resistant white cast iron material has the advantages that the production cost can be greatly saved and the material has good economic benefit.

Description

technical field [0001] The invention relates to a wear-resistant white cast iron material and a preparation method thereof. Background technique [0002] The research and application of chromium-based wear-resistant cast iron materials in my country has achieved unprecedented development in the late 1970s. For example, Xi'an Jiaotong University and other units took the lead in using high-chromium cast iron as lining plates and other wear-resistant parts, and in heat treatment specifications and popularization and application A lot of work has been done; Shandong University of Technology, Hefei University of Technology, etc. have carried out fruitful research on the spheroidization of chromium (Cr), manganese (Mn), tungsten (W), vanadium (V) white iron and its carbides Research has doubled the toughness of white iron, and it has been successfully used in the production of liners and other castings; Beijing University of Science and Technology, Shenyang Foundry Research Institut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10
Inventor 李固成禹彬王安民陈硕张霄蝶屈青山
Owner 驻马店市三山耐磨材料有限公司
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