Multielement microalloy low chromium white iron grinding ball and manufacturing method thereof

A chrome white cast iron, micro-alloying technology, applied in the field of wear-resistant materials, can solve the problems of poor impact toughness, wear-resistant and corrosion-resistant performance of grinding balls, reduce production costs and energy consumption, save resources, and achieve high performance. Effects of economic value and social benefits

Inactive Publication Date: 2015-05-20
MAANSHAN HENGDA WEAR RESISTANT MATERIALS
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-component micro-alloyed low-chromium white cast iron grinding ball and its manufacturing method to solve the problems of poor impact toughness, wear resistance and corrosion resistance of the grinding ball.

Method used

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Effect test

Embodiment Construction

[0013] The weight percent of each chemical component in the multi-element microalloyed low-chromium white cast iron grinding ball is: C 2.4-2.7%, Si 0.5-0.8%, Mn 1.2-1.5%, Cr 2.4-2.8%, Mo 0.2-0.3% , W 0.08-0.15%, Cu 0.3-0.5%, V 0.08-0.14%, Ti 0.02-0.04%, B 0.015-0.03%, Y 0.08-0.12%, Ce 0.05-0.08%, P≤0.05%, S≤ 0.05%, the balance is Fe.

[0014] A method for manufacturing multi-component microalloyed low-chromium white cast iron grinding balls, comprising the following steps:

[0015] (1) Cupola furnace and electric furnace are used for double smelting. First add a small amount of ferrochrome and all ferromolybdenum, then add steel scrap and returned materials, after the scrap steel is melted, add the remaining heated ferrochrome at last, and the melting temperature is 1450℃ , when the temperature reaches 1460°C, take samples for chemical analysis, control the chemical components within the specified range, add ferromanganese and ferrosilicon at a rate of 0.2 kg per...

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Abstract

The invention discloses a multielement microalloy low chromium white iron grinding ball which comprises the chemical components by weight percentage as follows: 2.4-2.7% of C, 0.5-0.8% of Si, 1.2-1.5% of Mn, 2.4-2.8% of Cr, 0.2-0.3 of Mo, 0.08-0.15% of W, 0.3-0.5% of Cu, 0.08-0.14% of V, 0.02-0.04% of Ti, 0.015-0.03% of B, 0.08-0.12% of Y, 0.05-0.08% of Ce, P smaller than or equal to 0.05%, S smaller than or equal to 0.05%, and the balance of Fe. According to the invention, wear resistance, high hardness, high tenacity and high impact resistance of the grinding ball are ensured by optimizing material formula to low chromium white iron, regulating the casting and melting process and combining a reasonable thermal processing method. Not only is production efficiency of a ball grinding mill improved, but also the production cost and energy consumption are further effectively reduced, the limited resources are saved, and extremely high economical value and social benefit are obtained.

Description

technical field [0001] The invention relates to a multi-component micro-alloyed low-chromium white cast iron grinding ball and a manufacturing method thereof, belonging to the technical field of wear-resistant materials. Background technique [0002] Ball mill is the main equipment for the production and processing of powder materials in metallurgical mines, building materials, cement, power chemical industry and other industries. During the working process of ball mill, its grinding ball is used as the end product, which belongs to the main wearable parts. Its usage is large and has a great impact on the cost of use. has always attracted people's attention. With the development of industry, various large-scale ball mills are increasing year by year, and the consumption of grinding balls is also increasing significantly. This not only consumes a large amount of iron and steel materials, but also a large amount of iron powder enters the boiler, corrodes the boiler parts and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/08B22D1/00C21D1/18C21D5/04C21D9/36
Inventor 张在武
Owner MAANSHAN HENGDA WEAR RESISTANT MATERIALS
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