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Rolled high-wearable steel ball and production method thereof

A high wear-resistant, steel ball technology, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of short service life and achieve the effects of long service life, low breakage rate and high volume hardness

Inactive Publication Date: 2017-02-22
邯郸市伟业地热开发有限公司
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AI Technical Summary

Problems solved by technology

[0002] At present, the grinding balls widely used at home and abroad are mostly high-carbon and high-alloy casting grinding balls (such as chromium-based high-alloy cast iron, such as: Cr8, Cr12, Cr15, Cr18, Cr24, Cr26; low-chromium cast iron, such as: Cr2, also There are some low-end carbon steel and alloy forged grinding balls, the process is simple, the breakage rate is as high as 3-10%, especially the large diameter grinding balls (diameter greater than 110mm), the service life is short

Method used

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Embodiment Construction

[0017] Rolling high wear-resistant steel balls, the composition of steel ingots for rolling high wear-resistant steel balls, in addition to Fe and unavoidable impurities, also contains C: 0.80-0.90%, Si: 0.2-0.4%, Mn: 0.80 ~ 1.0%, Ni: ≤ 0.25%, P: ≤ 0.035%, S: ≤ 0.035%, Cr: 0.70 ~ 0.90%, Mo: ≤ 0.015%; Cu: ≤ 0.25%.

[0018] 2. High wear-resistant steel ball rolling method, the process steps are:

[0019] C. Smelting and continuous casting to obtain steel ingots;

[0020] D. Continuous rolling to obtain qualified round steel, and slow cooling treatment;

[0021] C. Round steel cutting and blanking;

[0022] D. Roll forming: heating to 1150-1200°C, start rolling, final rolling temperature ≥ 850°C, to obtain formed steel balls;

[0023] E. Quenching treatment, the temperature of the steel ball is 800-860°C, enter the quenching pool for quenching; quenching and cooling to ≤ 80°C.

[0024] F. Tempering treatment, tempering at a temperature of 160-220°C to obtain qualified steel b...

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Abstract

The invention relates to a rolled high-wearable steel ball. A steel ingot of the rolled high-wearable steel ball comprises, by weight, 0.80%-0.90% of C, 0.2%-0.4% of Si, 0.80%-1.0% of Mn, not larger than 0.25% of Ni, not larger than 0.035% of P, not larger than 0.035% of S, 0.70%-0.90% of Cr, not larger than 0.015% of Mo, not larger than 0.25% of Cu and the balance Fe and inevitable impurities. The rolled high-wearable steel ball is low in damage percentage (the damage percentage is 0.5% or zero), high in size hardness (HRC is larger than or equal to 58) and long in service life.

Description

technical field [0001] The invention relates to a grinding ball, in particular to a rolled high wear-resistant steel ball and a production method thereof. Background technique [0002] At present, the grinding balls widely used at home and abroad are mostly high-carbon and high-alloy casting grinding balls (such as chromium-based high-alloy cast iron, such as: Cr8, Cr12, Cr15, Cr18, Cr24, Cr26; low-chromium cast iron, such as: Cr2, also There are some low-end carbon steel and alloy forged grinding balls, the process is simple, and the breakage rate is as high as 3-10%, especially the large-diameter grinding balls (diameter greater than 110mm), the service life is short. Therefore, it is necessary to study a high volume hardness (HRC ≥58), non-breakable, long service life rolled high wear-resistant steel balls and production methods thereof; it is a technical problem that needs to be solved at present. Contents of the invention [0003] The technical problem to be solved b...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/08C22C38/18C22C38/12C22C38/16C21D1/18C21D8/00C21D9/36
Inventor 冯红喜李海亮阴文行单俊丽李会征冯海龙
Owner 邯郸市伟业地热开发有限公司
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