Silicon-chromium-boron alloy wear resistant ball and manufacturing method thereof

A manufacturing method and boron alloy technology, applied in the field of wear-resistant materials, can solve the problems of wear resistance, low corrosion resistance, poor impact toughness of grinding balls, etc., and achieve the effect of improving surface quality and solving the problem of grinding ball fragmentation.

Active Publication Date: 2009-04-22
ANSTEEL GRP MINING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the above-mentioned defects, and aims to provide a silicon, chromium, boron alloy wear-resistant ball and its manufacturing method to solve the problems of poor impact toughness of grinding balls, low wear resistance and low corrosion resistance, etc.

Method used

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Embodiment Construction

[0030] A silicon, chromium, boron alloy wear-resistant ball of the present invention and its manufacturing method are realized in this way, and are described in detail below.

[0031] 1. Chemical composition

[0032] C 2.5-2.7%, Si 1.1-1.3%, Mn 1.6-2.0%, Cr 0.8-1.5%, P≤0.05%, S≤0.05%, B 0.0015-0.003%, and the balance is Fe.

[0033] Another: Since the silicon in pig iron and scrap steel cannot be controlled, and the silicon cannot be reduced in the smelting process, the silicon content in the production process is not required. Generally speaking, the silicon content is preferably between 0.8 and 1.1.

[0034] 2. Ingredients

[0035] Delivery standards for pig iron, scrap steel and alloys:

[0036] Each ton of molten iron contains 567kg of pig iron, 398kg of steel, 17.5kg of manganese and 17.5kg of chromium.

[0037] The carbon content of pig iron is calculated as 3.8%, the carbon content of steel is calculated as 0.08%, and the carbon content of manganese and chromium is ...

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PUM

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Abstract

The invention relates to a silicon-chromium-boron alloy antiwear ball and a production method thereof. The silicon-chromium-boron alloy antiwear ball is characterized by comprising the following chemical compositions: 2.5 to 2.7 percent of C, 1.1 to 1.3 percent of Si, 1.6 to 2.0 percent of Mn, 0.8 to 1.5 percent of Cr, less than or equal to 0.05 percent of P, less than or equal to 0.05 percent of S, 0.0015 to 0.003 percent of B, and the balance being Fe. The method for producing the silicon-chromium-boron alloy antiwear ball comprises the following steps: smelting, shaping, lifting, balling and heat treating. The silicon-chromium-boron alloy antiwear ball produced by the method solves the problem of grinding ball crack, and improves surface quality and wear resistance of a cast ball.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant materials, in particular to a silicon, chromium and boron alloy wear-resistant ball and a manufacturing method thereof. Background technique [0002] Mining enterprises are inseparable from ball mills, and ball mill materials are even more inseparable from balls. At present, the components of grinding balls that are generally produced and used in China are mainly low-chromium alloys and high-chromium alloys. Low-chromium alloy balls have low impact toughness and average wear resistance; high-chromium alloys have high cost and poor corrosion resistance, which also affects the efficiency of abrasives. The name of ZL97236808.6 disclosed in Chinese utility model patent after retrieval: multi-element alloy wear-resistant ball is an accessory of grinding equipment. The rotary body is only different from the previous grinding balls in shape. Contents of the invention [0003] The present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08C21C7/06B22D25/02B22D35/00B22D29/00C21D5/00C21D9/36
Inventor 王立平韩建国柳长青孙晓峰高红梅邸万雷
Owner ANSTEEL GRP MINING CO LTD
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