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Steel special for abrasion-resistant grinding ball and preparation method of steel

A manufacturing method and grinding ball technology, which are applied in the field of metal smelting, can solve the problems of low production efficiency, low wear-resistant alloy content and high cost, and achieve the effects of improving service life, improving mechanical properties and enhancing hardness

Inactive Publication Date: 2018-08-10
天津荣程联合钢铁集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, although high-alloy steel balls have good wear resistance, since most of the high-alloy ball milling steels are die-cast, the production efficiency is low and the cost is high, which cannot meet the market demand at all. Therefore, it is urgent to develop a product with better wear resistance than Carbon steel ball with low alloy content, a new type of high wear-resistant steel ball suitable for industrial mass production

Method used

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  • Steel special for abrasion-resistant grinding ball and preparation method of steel
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  • Steel special for abrasion-resistant grinding ball and preparation method of steel

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Embodiment Construction

[0041] The following is attached figure 1 The present invention is described in further detail.

[0042] A method for manufacturing special steel for wear-resistant grinding balls, comprising the following steps:

[0043] Step 1: In terms of mass percentage, 115t steel containing C0.73-0.83%, Si0.15-0.20%, Mn0.75-0.85%, Cr0.40-0.50%, P≤0.020%, S≤0.025% Add it into the converter for smelting, then add low-nitrogen carbon powder, deoxidizer, silicomanganese, ferrosilicon, high-carbon ferrochrome, titanium, copper, indium, gallium, cerium, zinc and tin to the converter in sequence, and the whole process is from the converter Argon is blown into the bottom of the furnace to control the oxygen pressure ≥ 0.8Mpa, and the end point of smelting is C ≥ 0.15%, P ≤ 0.015%. The amount added is 0.24% to 0.28% of the total weight of the materials charged into the converter;

[0044] Step 2: The molten steel tapped in Step 1 is transferred to the LF furnace for refining, and Ar is blown f...

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Abstract

The invention provides steel special for an abrasion-resistant grinding ball. The steel special for the abrasion-resistant grinding ball comprises 0.88%-0.94% of C, 0.20%-0.30% of Si, 0.90%-1.00% of Mn, no more than 0.025% of P, no more than 0.025% of S, 0.50%-0.60% of Cr, 0.010%-0.050% of Ti, 0.20%-0.30% of In, no more than 0.25% of Cu, 0.080%-0.100% of Ga, 0.20%-0.26% of Ce, 0.10%-0.14% of Zn, 0.14%-0.16% of Sn, and the balance Fe and inevitable impurities. By adoption of the technical scheme, crystals of the steel are fine, and the internal density of the steel is high; the grinding ball prepared from the steel is high in hardness and good in abrasion resistance; and the steel special for the abrasion-resistant grinding ball is low in production cost and suitable for being used for grinding in various fields.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a special steel for wear-resistant grinding balls and a manufacturing method thereof. Background technique [0002] Wear-resistant steel is mainly used to manufacture various wear-resistant steel balls. Most of the traditional ball milling steels are carbon steel or high alloy steel. In recent years, with the rapid development of mining, construction, metallurgy, chemical industry, ceramics, energy, power plants and cement industries at home and abroad, the market demand for wear-resistant steel balls is increasing, and the working environment of steel balls is also increasing. The wear resistance of carbon steel balls can no longer meet the grinding requirements of the above industries. On the other hand, although high-alloy steel balls have good wear resistance, because most of the high-alloy ball milling steels are die-cast, the production efficiency is low and the cost is high...

Claims

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Application Information

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IPC IPC(8): C22C38/20C22C38/28C22C38/02C22C38/04C22C33/04C21C7/10C21C7/072C21C7/00
CPCC21C7/0056C21C7/072C21C7/10C22C33/04C22C38/002C22C38/005C22C38/008C22C38/02C22C38/04C22C38/20C22C38/28
Inventor 李玉岗李学刚闫皓
Owner 天津荣程联合钢铁集团有限公司
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