Method for manufacturing high-carbon and high-chromium and high-manganese alloy cast ball

A technology of high manganese alloys and manufacturing methods, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of reduced output of mill tables, out-of-round deformation, etc., achieves reduced labor intensity, reduced downtime, and obvious comprehensive benefits Effect

Inactive Publication Date: 2013-01-09
安徽省宁国诚信耐磨材料有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

Ordinary high chromium grinding balls used in the above mills will be out of round and deformed due to corrosion in less than half a year, and the output of the mill will be greatly reduced

Method used

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Embodiment Construction

[0011] The present invention will be described in further detail below in specific embodiment

[0012] 2. The method for manufacturing high-carbon, high-chromium and high-manganese alloy casting balls is characterized in that: the raw materials are

[0013] (1), scrap steel: bearing scraps: C: 0.3-1.0% Si: ≤0.4% Mn: ≤0.3% Cr: 0.5-1.5%;

[0014] (2), high carbon ferrochrome: Cr: 60% Si: ≤1.5 Fe: ≤38%;

[0015] (3), high carbon ferromanganese: Mn: 58% S: ≤2% Fe: ≤40%;

[0016] (4), manufacturing process and processing steps: use intermediate frequency electric furnace single smelting, material ratio: scrap steel 65%, high carbon ferrochrome 3%, high carbon ferromanganese 32%, after starting the electric furnace, first add high carbon ferrochrome, because It has a high melting point and is not easy to melt. Then add scrap steel and ferromanganese until before sampling and testing. Because of its large burning loss, it is cast out of the furnace after all element testing reaches...

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Abstract

The invention relates to a method for manufacturing a high-carbon and high-chromium and high-manganese alloy cast ball. According to the method, the high-carbon and high-chromium and high-manganese alloy cast ball comprises the following raw materials: scrap steel, high carbon ferro-chrome and high carbon ferromanganese, wherein the scrap steel is bearing leftovers and comprises 0.3 to 1.0 percent of C, less than or equal to 0.4 percent of Si, less than or equal to 0.3 percent of Mn and 0.5 to 1.5 percent of Cr; the high carbon ferro-chrome comprises 60 percent of Cr, less than or equal to 1.5 percent of Si and less than or equal to 38 percent of Fe; and high carbon ferromanganese comprises 58 percent of Mn, less than or equal to 2 percent of S and less than or equal to 40 percent of Fe. The method has the advantages that the machine halt number, warehouse clearing number and ball adding number are reduced, the labor intensity of workers is reduced, and the method has obvious comprehensive benefits of environment friendliness and social and economic benefits.

Description

Technical field: [0001] The invention relates to a casting ball, in particular to a high-carbon, high-chromium and high-manganese alloy casting ball whose hardness and falling ball fatigue number are equal to or close to those of a high-chromium grinding ball. Background technique: [0002] Alumina, coal mills, and wet mills have high requirements on the wear resistance of the grinding balls. At the same time, because the abrasive itself is relatively corrosive, the grinding balls are also required to have high corrosion resistance. Ordinary high chromium grinding balls used in the above mills will be out of round and deformed due to corrosion in less than half a year, and the output of the mill will be greatly reduced. In response to this situation, our company specially developed high-carbon, high-manganese, and high-chromium alloy casting balls for practical promotion and use in the above mills, which have been recognized by customers. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/08B22C9/22C22C37/10
Inventor 覃照成陈益宁喻传宏谢志东
Owner 安徽省宁国诚信耐磨材料有限公司
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