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Low and medium alloy wear resistant steel and preparation method thereof

A wear-resistant steel and low-alloy technology, applied in the field of wear-resistant metal materials, can solve the problems of economic loss, workpiece and equipment failure, etc., and achieve the effects of low cost, obvious economic and social benefits, and good toughness.

Inactive Publication Date: 2012-01-04
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the research on wear-resistant steel materials has been quite extensive. Especially in the past two decades, a series of wear-resistant steel varieties have been developed at home and abroad according to their uses and resource conditions, and have been widely used in metallurgy, mining, transportation, electric power, coal, etc. In various industrial doors such as building materials and building materials, many workpieces and equipment fail rapidly due to wear and tear, resulting in a large amount of economic losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Take C: 0.41%, Si: 0.9%, Mn: 1.1%, Cr: 1.5%, Mo: 0.31%, Cu: 1.25%, Ce: 0.3%, B: 0.001%, P: 0.04%, S : 0.04%, Fe: 94.149%. Use an intermediate frequency induction electric furnace for smelting, add weighed ferrochrome, ferromolybdenum, ferrosilicon, and ferromanganese. When the temperature of the molten steel reaches 1580-1610°C, add copper and boron, stir, and insert the aluminum bar at a rate of 1kg / t Deoxidize; put the rare earth cerium in the ladle, tap the molten steel, the temperature is not lower than 1580℃, and the pouring temperature is 1500-1540℃. The cast workpiece is first normalized, heated to 840-860°C for 4 hours, and cooled to room temperature in air. The purpose is to refine the structure and reduce stress, and then perform quenching treatment. Heat to 900°C for 1 hour and then Cooled in oil, and then tempered at 240-260℃ for 2 hours. Its hardness value is 52HRC and impact toughness value is 32J / cm 2 , The tensile strength is 1055MPa, the elongation is 7...

example 2

[0035] Take C: 0.45%, Si: 0.9%, Mn: 1.4%, Cr: 1.9%, Mo: 0.37%, Cu: 1.3%, Ce: 0.4%, B: 0.002%, P: 0.04%, S : 0.04%, Fe: 93.198%. Use an intermediate frequency induction electric furnace for smelting, add weighed ferrochrome, ferromolybdenum, ferrosilicon, and ferromanganese. When the temperature of the molten steel reaches 1580-1610°C, add copper and boron, stir, and insert the aluminum bar at a rate of 1kg / t Deoxidize; put the rare earth cerium in the ladle, tap the molten steel, the temperature is not lower than 1580℃, and the casting temperature is 1500-1540℃. The cast workpiece is first normalized, heated to 840-860°C for 4 hours, and cooled to room temperature in air. The purpose is to refine the structure and reduce stress, and then perform quenching treatment. Heat to 900°C for 1 hour and then Cooled in oil, and then tempered at 240-260℃ for 2 hours. Its hardness value is 53HRC and impact toughness value is 25J / cm 2 , The tensile strength is 1310MPa, the elongation is 6....

example 3

[0037] Take C: 0.50%, Si: 0.95%, Mn: 1.4%, Cr: 2.2%, Mo: 0.44%, Cu: 1.35%, Ce: 0.45%, B: 0.003%, P: 0.04%, S : 0.04%, Fe: 92.627%. Use an intermediate frequency induction electric furnace for smelting, add weighed ferrochrome, ferromolybdenum, ferrosilicon, and ferromanganese. When the temperature of the molten steel reaches 1580-1610°C, add copper and boron, stir, and insert the aluminum bar at a rate of 1kg / t Deoxidize; put the rare earth cerium in the ladle, tap the molten steel, the temperature is not lower than 1580℃, and the casting temperature is 1500-1540℃. The cast workpiece is first normalized, heated to 840-860°C for 4 hours, and cooled to room temperature in air. The purpose is to refine the structure and reduce stress, and then perform quenching treatment. Heat to 900°C for 1 hour and then Cooled in oil, and then tempered at 240-260℃ for 2 hours. Its hardness value is 56HRC and impact toughness value is 21J / cm 2 , The tensile strength is 1440MPa, the elongation is...

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Abstract

The invention relates to low and medium alloy wear resistant steel and a preparation method thereof. The low and medium alloy wear resistant steel comprises the following chemical compositions in percent by mass: 0.41%-0.50% of carbon, 0.85%-0.95% of silicon, 1.1%-1.4% of manganese, 1.5%-2.3% of chromium, 0.31%-0.45% of molybdenum, 1.25%-1.35% of copper, 0.30%-0.45% of cerium, 0.001%-0.003% of boron, less than or equal to 0.04% of phosphorus, less than or equal to 0.04% of sulfur and the balance of iron. The low and medium alloy wear resistant material with high hardness, good wear resistance, good toughness and good comprehensive performance can be used in various industrial wear resistant fields such as the liner plate of a ball mill, the scrapper of a sand mixer, the guide plate, the hammerhead of a crusher and the like.

Description

Technical field [0001] The invention relates to a wear-resistant metal material, in particular to a medium-low alloy wear-resistant steel and a preparation method thereof. Background technique [0002] At present, the research on wear-resistant steel materials has been quite extensive. Especially in the past two decades, a series of wear-resistant steel varieties have been developed at home and abroad according to the use and resource conditions, which have been widely used in metallurgy, mining, transportation, electric power, and coal. In various industrial doors such as, building materials, many workpieces and equipment quickly fail due to wear, resulting in a lot of economic losses. Therefore, the development and use of long-life iron and steel wear-resistant materials has always been an important topic of common concern for enterprises and scientific research units. [0003] Commonly used wear-resistant steel materials mainly include: high manganese steel, chromium-based whit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/32C22C33/04
Inventor 南红艳郑喜平刘志强曹建彬李启民米国发
Owner HENAN POLYTECHNIC UNIV