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High chromium multielement alloy wear resisting ball and manufacturing method thereof

A multi-element alloy and manufacturing method technology, applied in the field of wear-resistant materials, can solve problems such as low wear resistance, low corrosion resistance, and poor impact toughness of grinding balls, so as to reduce production costs and energy consumption, improve production efficiency, and save resources Effect

Inactive Publication Date: 2013-04-03
MAANSHAN HENGDA WEAR RESISTANT MATERIALS
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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-chromium multi-element alloy wear-resistant 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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Embodiment Construction

[0014] The weight percent of each chemical component in the high chromium multi-element alloy wear-resistant ball is: C 2.5-2.8%, Si 0.8-1.2%, Mn 1.2-1.4%, Cr 12.5-14.0%, Mo 0.4-0.6%, Ni 0.7- 1.0%, Cu 0.8-1.2%, V 0.05-0.1%, W≤0.02, Ti 0.03-0.05%, B 0.02-0.04%, Nb 0.03-0.04%, P≤0.05%, S≤0.05%, the balance is Fe.

[0015] A method for manufacturing a high-chromium multi-element alloy wear-resistant ball, comprising the following steps:

[0016] (1) Use a medium frequency induction furnace for smelting, first add a small amount of ferrochrome and all ferromolybdenum, then add scrap steel and returned materials, after the scrap steel is melted, finally add the remaining heated ferrochrome, the melting temperature is 1480 ° C, when When the temperature reaches 1500°C, take samples for chemical analysis, and control the chemical components within the specified range. Before the molten iron is released for 5 minutes, add ferromanganese and ferrosilicon at a rate of 0.25 ...

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Abstract

The invention discloses a high chromium multielement alloy wear resisting ball which comprises the chemical components by weight percentage as follows: 2.5-2.8% of C, 0.8-1.2% of Si, 1.2-1.4% of Mn, 12.5-14.0% of Cr, 0.4-0.6 of Mo, 0.7-1.0% of Ni, 0.8-1.2% of Cu, 0.05-0.1% of V, W smaller than or equal to 0.02, 0.03-0.05% of Ti, 0.02-0.04% of B, 0.03-0.04% of Nb, 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 high 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 high-chromium multi-element alloy wear-resistant 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 reduces its life. ...

Claims

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Application Information

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IPC IPC(8): C22C38/56C22C33/06B02C17/20
Inventor 张在武
Owner MAANSHAN HENGDA WEAR RESISTANT MATERIALS
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