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High-manganese medium carbon steel wear-resisting chute lining plate

A carbon steel and chute technology, which is applied to high manganese medium carbon steel and cast into wear-resistant chute linings, the smelting field of metal parts on the chute, can solve the problems of limitation and poor wear resistance of steel plates, and reduce the quenching temperature. , the effect of increasing tempering stability and heat resistance, improving hardenability and strength

Inactive Publication Date: 2016-03-16
ANHUI SANFANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a wear-resistant chute liner made of high-manganese and medium-carbon steel to overcome the limitations of the application of the steel plate due to poor wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Use an electric arc furnace to smelt steel, lay quicklime on the bottom of the furnace, add steelmaking pig iron, energize and start arcing and melt to 1550-1580°C, remove slag after 45 minutes and add carbon powder, quicklime and fluorite, and add ferromanganese and ferrochrome after 10 minutes After 10 minutes, add aluminum powder, ferroboron and ferrotitanium;

[0020] Transfer to the refining furnace, add niobium powder and zircon sand, adjust the composition of molten steel to 0.54% C, 12% Mn, 1.5% Cr, 2.5-3.5% Al, 0.15% Nb by weight percentage , 0.60% Ti, 0.5% B, 0.05% Zr, P is controlled below 0.04%, Si is controlled below 0.5%, and the balance is Fe. The steel can be tapped after the ratio test is passed, and the tapping temperature is 1560°C ;

[0021] The obtained molten steel is degassed under a vacuum atmosphere of 10-12kPa, and when the temperature of the molten steel drops to 1490-1500°C, the full mold casting is carried out by dry sand molding in the vac...

Embodiment 2

[0024] Use an electric arc furnace to smelt steel, lay quicklime on the bottom of the furnace, add steelmaking pig iron, energize and start arcing and melt to 1550-1580°C, remove slag after 1.0h and add carbon powder, quicklime and fluorite, and add ferromanganese and chromium after 15min Iron, after 15 minutes, add aluminum powder, ferroboron, and ferrotitanium;

[0025] Transfer to the refining furnace, add niobium powder and zircon sand, adjust the composition of molten steel to 0.58% C, 16% Mn, 3.5% Cr, 2.5-3.5% Al, 0.25% Nb by weight percentage , 0.80% Ti, 2.5% B, 0.07% Zr, P is controlled below 0.04%, Si is controlled below 0.5%, and the balance is Fe. The steel can be tapped after the ratio test is passed, and the tapping temperature is 1530°C ;

[0026] The obtained molten steel is degassed under a vacuum atmosphere of 10-12kPa, and when the temperature of the molten steel drops to 1490-1500°C, the full mold casting is carried out by dry sand molding in the vacuum atm...

Embodiment 3

[0029] Use an electric arc furnace to smelt steel, lay quicklime on the bottom of the furnace, add steelmaking pig iron, energize and start arcing and melt to 1550-1580°C, remove slag after 50 minutes and add carbon powder, quicklime and fluorite, and add ferromanganese and ferrochrome after 15 minutes After 15 minutes, add aluminum powder, ferroboron and ferrotitanium;

[0030] Transfer to the refining furnace, add niobium powder and zircon sand, adjust the composition of molten steel to 0.56% C, 14% Mn, 2.5% Cr, 2.5-3.5% Al, 0.20% Nb by weight percentage , 0.70% Ti, 1.5% B, 0.06% Zr, P is controlled below 0.04%, Si is controlled below 0.5%, and the balance is Fe. The steel can be tapped after the ratio test is passed, and the tapping temperature is 1545°C ;

[0031] The obtained molten steel is degassed under a vacuum atmosphere of 10-12kPa, and when the temperature of the molten steel drops to 1490-1500°C, the full mold casting is carried out by dry sand molding in the vac...

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Abstract

The invention relates to smelting of metal components on a chute, and provides a high-manganese medium carbon steel wear-resisting chute lining plate. Steel materials are smelted through an electric-arc furnace and then transferred into a finery, the component proportion of the molten steel is adjusted, and then the steel is discharged. The molten steel is subjected to vacuum degassing and then full mold casting, and an obtained casting is subjected to heat treatment including water quenching and oil quenching to obtain a finished part. The components of the molten steel include, by weight, 0.54-0.58% of C, 12-16% of Mn, 1.5-3.5% of Cr, 2.5-3.5% of Al, 0.15-0.25% of Nb, 0.60-0.80% of Ti, 0.5-2.5% of B, 0.05-0.07% of Zr, less than 0.04% of P, less than 0.5% of Si and the balance Fe.

Description

technical field [0001] The invention relates to the smelting of iron-based alloys, in particular to the smelting of metal parts on a chute, in particular to smelting a high-manganese medium-carbon steel and casting it into a wear-resistant chute liner. Background technique [0002] The chute used in mine production is an important equipment for mineral circulation and transportation. It needs to be wear-resistant and smooth so that the material can slide down, but the working conditions of the chute are harsh and easy to wear. The chute liner is a liner set on the chute, which undertakes the function of anti-wear. It needs to maintain good conveying performance after being ground by materials as abrasives for a long time, and reduce the cost and workload of replacement and maintenance. [0003] The materials of the chute liner mainly include steel, cast stone, ultra-high molecular weight materials, etc. Among them, the impact strength and toughness of the steel plate are hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C33/04
CPCC22C38/04C22C33/04C22C38/06C22C38/12C22C38/14C22C38/18
Inventor 仰明李和成
Owner ANHUI SANFANG NEW MATERIAL TECH CO LTD
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