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Wear-resistant steel and production process thereof

A production process and wear-resistant steel technology, applied in the direction of improving process efficiency, etc., can solve the problems of low steel strength and hardness, poor wear resistance, etc., to improve wear resistance, reduce saturation, prevent oxidation and burning Effect

Active Publication Date: 2018-07-24
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

[0005] Both of the above two wear-resistant steels belong to low-carbon steel, which has the inherent characteristics of low-carbon steel, that is, the steel has low strength and hardness, and poor wear resistance.

Method used

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  • Wear-resistant steel and production process thereof
  • Wear-resistant steel and production process thereof
  • Wear-resistant steel and production process thereof

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Embodiment Construction

[0046] The following is a further detailed description of the present invention.

[0047] A production process of wear-resistant steel, comprising the following steps:

[0048] 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% Put it into the converter for smelting, then add low-nitrogen carbon powder, deoxidizer, silicomanganese, ferrosilicon, high-carbon ferrochrome, titanium, copper, tungsten, vanadium, yttrium to the converter in turn, use aluminum strips for deoxidizers, aluminum strips The amount of steel is 0.8-1.0kg / t, and Ar is blown from the bottom of the converter throughout the whole process to control the oxygen pressure ≥ 0.8Mpa, and the end point of smelting is C ≥ 0.15%, P ≤ 0.015%, and the temperature of molten iron reaches 1615-1635 ℃, Tapping is carried out afterwards, and lime is added in the ladle, and the amount of lime added is 0.25~0.28% of the total weight of the materi...

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Abstract

The invention relates to wear-resistant steel and belongs to the technical field of metal smelting. The wear-resistant steel is prepared from the following components in percent by mass: 0.88-0.94% ofC, 0.20-0.30% of Si, 0.90-1.00% of Mn, 0.50-0.60% of Cr, 0.20-0.60% of W, 0.10-0.25% of V, 2.50-3.00% of Zr, 0.010-0.050% of Ti, 0.020-0.050% of Y, less than or equal to 0.025% of P, less than or equal to 0.025% of S, less than or equal to 0.25% of Cu and the balance of Fe and inevitable impurities. The wear-resistant steel has the beneficial effects that the problems of low strength and poor wear resistance of the existing low-carbon wear-resistant steel is solved; the wear-resistant steel is finer in crystal and fuller in internal density, and a grinding ball prepared by the wear-resistantsteel is larger in hardness and good in wear resistance.

Description

technical field [0001] The invention relates to the technical field of metal smelting, more specifically, it relates to a wear-resistant steel and its production process. Background technique [0002] Abrasion is one of the main forms of material damage, and the economic losses it causes are quite staggering. A large number of equipment used in metallurgical mines, agricultural machinery, coal and other industries, most of which fail due to material wear, and the annual consumption of steel due to abrasive wear in my country is more than one million tons. Therefore, in recent decades, the development and application of high-strength wear-resistant steel has developed rapidly. [0003] The Chinese invention patent with the authorized announcement number CN102560272B discloses a wear-resistant steel plate, whose weight percentage composition is: C: 0.205-0.25%, Si: 0.20-1.00%, Mn: 1.0-1.5%, P≤0.015%, S ≤0.010%, Al: 0.02-0.04%, Ti: 0.01-0.03%, N≤0.006%, Ca≤0.005%, and at leas...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/28C22C38/20C22C33/06C21D8/02C21C7/10C21C7/00C21C7/06
CPCC21C7/0056C21C7/06C21C7/10C21D8/0226C22C33/06C22C38/005C22C38/02C22C38/04C22C38/20C22C38/22C22C38/24C22C38/28Y02P10/20
Inventor 利强包石磊温国栋
Owner 天津荣程联合钢铁集团有限公司
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