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Wear-resistant steel ball for ball mill

A technology of wear-resistant steel and ball mill, which is applied in grain processing, etc., can solve the problems of high cost and wear resistance that cannot meet the grinding requirements, and achieve the effect of improving comprehensive performance and optimizing preparation process

Inactive Publication Date: 2016-08-17
NINGGUO SOUTHERN WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, wear-resistant steel balls for ball mills usually use carbon steel balls, whose wear resistance cannot meet the grinding requirements. In order to improve wear resistance, high-alloy wear-resistant steel balls are used, and the cost is too high, so it needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A wear-resistant steel ball for a ball mill, the weight percentage of each component is as follows:

[0021] C: 0.50%; Si: 0.25%; Cr: 4.9%; Mn: 4.0%; Ni: 0.25%; Ti: 0.050%; Al: 0.9%; W: 0.08%; Mo: 0.20%; S: 0.010%; P: 0.02%; the remainder is Fe;

[0022] During the preparation process, the wear-resistant steel ball for the ball mill was prepared according to the following process steps:

[0023] S1: Weigh the raw materials according to the weight percentage of each component, smelt, pour, cast and shape, and clean up to obtain castings;

[0024] S2: Keep the casting obtained in S1 at 910°C for 2.5 hours, then quench it in water, raise the temperature of the quenched casting to 250°C for tempering treatment, and after holding it for 1.8 hours, move it into the slow cooling pit and slowly cool it to room temperature to obtain the resistance Grinding steel ball finished product.

Embodiment 2

[0026] A wear-resistant steel ball for a ball mill, the weight percentage of each component is as follows:

[0027] C: 0.4%; Si: 0.2%; Cr: 4.5%; Mn: 3.6%; Ni: 0.2%; Ti: 0.04%; Al: 0.6%; W: 0.05%; Mo: 0.15%; S: 0.01%; P: 0.01%; the remainder is Fe;

[0028] During the preparation process, the wear-resistant steel ball for the ball mill was prepared according to the following process steps:

[0029] S1: Weigh the raw materials according to the weight percentage of each component, smelt, pour, cast and shape, and clean up to obtain castings;

[0030] S2: Keep the casting obtained in S1 at 900°C for 3 hours, then quench it in water, raise the temperature of the quenched casting to 270°C for tempering treatment, and after holding it for 1.5 hours, move it into the slow cooling pit and slowly cool it to room temperature to obtain the resistance Grinding steel ball finished product.

Embodiment 3

[0032] A wear-resistant steel ball for a ball mill, the weight percentage of each component is as follows:

[0033] C: 0.6%; Si: 0.3%; Cr5.3%; Mn: 4.5%; Ni: 0.3%; Ti: 0.06%; Al: 1.2%; W: 0.1%; Mo: 0.25%; S: 0.02%; P: 0.05%; the remainder is Fe;

[0034] During the preparation process, the wear-resistant steel ball for the ball mill was prepared according to the following process steps:

[0035] S1: Weigh the raw materials according to the weight percentage of each component, smelt, pour, cast and shape, and clean up to obtain castings;

[0036] S2: Keep the casting obtained in S1 at 920°C for 2 hours, and then quench it in water, raise the temperature of the quenched casting to 230°C for tempering treatment, and after holding it for 2 hours, move it into the slow cooling pit and slowly cool it to room temperature to obtain the resistance Grinding steel ball finished product.

[0037] In the above embodiments, the comprehensive performance of the wear-resistant steel balls f...

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PUM

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Abstract

The invention discloses a wear-resistant steel ball for a ball mill. The weight percentages of the components are as follows: C: 0.4%-0.6%; Si: 0.2%-0.3%; Cr: 4.5%-5.3%; Mn: 3.6% ‑4.5%; Ni: 0.2%‑0.3%; Ti: 0.04%‑0.06%; Al: 0.6%‑1.2%; W: 0.05%‑0.1%; Mo: 0.15%‑0.25%; S: 0‑0.02% ; P: 0‑0.06%; the remaining material is Fe; in the preparation process, the wear-resistant steel balls for the ball mill are prepared according to the following process steps: S1: Weigh the raw materials according to the weight percentage of each component for smelting, pouring, and After casting and molding, clean up to obtain castings; S2: heat the castings obtained in S1 at 900-920°C for 2-3 hours, then water quench, heat the quenched castings to 230-270°C for tempering, and keep warm After 1.5-2 hours, move into the slow cooling pit and slowly cool to room temperature to obtain the finished wear-resistant steel ball.

Description

technical field [0001] The invention relates to the technical field of grinding machines, in particular to a wear-resistant steel ball for a ball mill. Background technique [0002] Wear-resistant steel balls for ball mills are the largest consumption of wear-resistant materials in the crushing industry. The domestic mineral processing industry alone needs to consume about 2 million tons of steel balls of various materials every year, and my country's cement industry also needs to consume 200,000 tons every year. Wear-resistant steel balls are important basic components of ball mills, especially precision industrial steel balls play a huge role in the development of the national economy, and are widely used in cement plants, power plants, etc. [0003] During the operation of the wear-resistant steel balls for ball mills, the working conditions are very complicated. When the moving parts are running at high speed, the steel balls and their supporting devices are mainly in po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C22C33/04B02C17/20
Inventor 熊夏鸣
Owner NINGGUO SOUTHERN WEAR RESISTANT MATERIALS