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A kind of low manganese anti-wear cast iron grinding ball or grinding segment and preparation method thereof

A wear-resistant cast iron and grinding ball technology, applied in the field of metal wear-resistant materials, can solve the problems of low manufacturing cost, increased production cost, low cost-effectiveness advantage, etc., and achieves good wear resistance and impact toughness, good impact resistance, The effect of simple process flow

Active Publication Date: 2020-11-27
湖南华民控股集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, the various grinding balls developed at home and abroad generally have the following problems. The grinding balls with good performance have high manufacturing costs.
For example, the current high-chromium wear-resistant cast iron grinding ball materials are added with high-content chromium alloys or various traces of precious metal alloys to improve the wear resistance of the material, but this leads to high production costs of the grinding balls. Under changing application conditions, the cost performance advantage is low
And after adding some noble alloy elements, the production process is complicated and the heat treatment process parameters are strictly controlled, which further increases the production cost
[0007] However, the grinding balls with low manufacturing cost have poor performance and high wear, especially the quality stability of the grinding balls is low.

Method used

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  • A kind of low manganese anti-wear cast iron grinding ball or grinding segment and preparation method thereof
  • A kind of low manganese anti-wear cast iron grinding ball or grinding segment and preparation method thereof
  • A kind of low manganese anti-wear cast iron grinding ball or grinding segment and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment is to limit the specific implementation conditions of steps S2 to S6 in the above general implementation scheme, and the rest of the undefined parts are carried out by referring to the steps of the above general scheme. in:

[0053] The predetermined proportions when preparing raw materials in step S2 are preferably: 3.45% C, 1.2% Mn, 0.6% Si, 0.04% S, 0.04% P, the rest is Fe, and the sum of the mass percentages of each chemical component is 100%. The raw materials are prepared according to The mass percentages of the chemical components are prepared and put into the electric furnace for melting, and during the melting process in the electric furnace, the various chemical components in the electric furnace are kept at the predetermined ratios mentioned above.

[0054] The first preset temperature in step S2 is 1550°C;

[0055] The second preset temperature in step S3 is 1450°C;

[0056] The performance index of the grinding ball finally obtained in thi...

Embodiment 2

[0058] This embodiment is to limit the specific implementation conditions of steps S2 to S6 in the above general implementation scheme, and the rest of the undefined parts are carried out by referring to the steps of the above general scheme. in:

[0059] Predetermined proportions when preparing raw materials in step S2 are preferably: 3.65% C, 1.35% Mn, 0.5% Si, 0.04% S, 0.04% P, the rest is Fe, the sum of the mass percentages of each chemical component is 100%, and the raw materials are prepared according to The mass percentage of this chemical composition is prepared, and added to the electric furnace for melting, and in the process of melting in the electric furnace, keep the various chemical components in the electric furnace at the above-mentioned predetermined ratio;

[0060] The first preset temperature in step S2 is 1550°C;

[0061] The second preset temperature in step S3 is 1450°C.

[0062] The performance index of the low-manganese wear-resistant cast iron grindi...

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Abstract

The invention relates to the technical field of metal wear-resistant materials, in particular to a low-manganese anti-wear cast iron grinding ball or grinding section and a preparation method thereof.The low manganese anti-wear cast iron grinding ball or grinding section adopts high carbon ferromanganese, ferrosilicon, scrap steel and recarburizer / raw iron as raw materials. The grinding ball or grinding section includes the following chemical components by mass: 3.45-3.65% C, 0.85-1.35% Mn, 0.35-0.65% Si, <=0.06% S and P and the balance Fe. The sum of the proportion of the components is 100%.The preparation method includes smelting the dosed preparation raw materials in a furnace to 1500-1550 DEG C, pouring the materials into a bull ladle for cooling 1450-1480 DEG C, pouring the materials into a mold for molding, cooling and grinding, pushing a frame into a tempering furnace for tempering to obtain a finished product. The preparation method is simple in production process, low in cost and capable of manufacturing the low-manganese anti-wear cast iron grinding ball or grinding section with high cost performance.

Description

technical field [0001] The invention relates to the technical field of metal wear-resistant materials, in particular to a low-manganese anti-wear cast iron grinding ball or grinding segment and a preparation method thereof. Background technique [0002] Grinding balls are widely used in industrial basic industries such as mining, thermal power, cement and metallurgy. For different application conditions, it is necessary to choose different materials to make grinding balls. At present, the main materials for making grinding balls are: low-chromium, medium-chromium and high-chromium wear-resistant cast iron, multi-element low-alloy cast iron, etc. These materials for making grinding balls Among them, the method of adding high-content alloy or low / micro-alloying of various metal elements is used to improve the wear resistance of the grinding ball and the cost-effectiveness of the application. However, all of the above materials contain a relatively high content of chromium or my...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C33/08
CPCC22C33/08C22C37/10
Inventor 任立军肖志军
Owner 湖南华民控股集团股份有限公司