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Manganese-tungsten-titanium wear-resistant cast steel and preparation method thereof

A technology of tungsten titanium and cast steel, applied in the field of wear-resistant cast steel materials, can solve problems such as limited effect

Inactive Publication Date: 2016-06-22
LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, these rare earth oxides and nitrides cannot be used as effective heterogeneous nucleation cores of carbides and carbides, and their effects are very limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Clean up scrap steel, ferrotungsten, ferromanganese, ferrotitanium and ferrochrome, according to the mass fraction of 0.20%C, 1.0%W, 1.5%Si, 1.5%Mn, 1.0%Cr, 1.0%Ti, 0.04%S, 0.04 %P, the balance is the chemical ratio of iron for batching, and ferrotungsten, ferromanganese, ferrotitanium and ferrochrome are dried and then classified and placed for use; then the above-mentioned configured scrap steel, ferromanganese and ferrochrome Put the ingredients into the furnace for heating, add ferro-tungsten at the later stage of smelting, add ferro-titanium into the furnace after melting, the melting temperature is 1550°C, add 0.1% aluminum particles after about 2 minutes to deoxidize and leave the furnace; then pouring, the pouring temperature is 1500°C; then quenched at 950°C for 30 minutes, then air cooled, then quenched at 900°C for 30 minutes, then water cooled, then quenched at 800°C for 5 minutes, then water cooled, and then tempered at 300°C for 2 hours, then air cooled to ...

Embodiment 2

[0030] Clean up scrap steel, ferrotungsten, ferromanganese, ferrotitanium and ferrochrome, according to the mass fraction of 0.3%C, 1.5%W, 1%Si, 1.1%Mn, 1.5%Cr, 1.5%Ti, 0.03%S, 0.03 %P, the balance is the chemical ratio of iron for batching, and ferrotungsten, ferromanganese, ferrotitanium and ferrochrome are dried and then classified and placed for use; then the above-mentioned configured scrap steel, ferromanganese and ferrochrome Put the ingredients into the furnace to heat, add ferro-tungsten at the later stage of smelting, add ferro-titanium into the furnace after melting, the melting temperature is 1600°C, add 0.15% aluminum particles after about 2 minutes to deoxidize and leave the furnace; then pouring, the pouring temperature is 1500°C; then quenched at 970°C for 30 minutes, then air cooled, then quenched at 940°C for 30 minutes, then water cooled, then quenched at 700°C for 5 minutes, then water cooled, and then tempered at 260°C for 2 hours, then air cooled to obtain...

Embodiment 3

[0032]Clean up scrap steel, ferrotungsten, ferromanganese, ferrotitanium and ferrochrome, according to the mass fraction of 0.35%C, 2.0%W, 0.5%Si, 0.8%Mn, 2.0%Cr, 2.0%Ti, 0.02%S, 0.03 %P, the balance is the chemical ratio of iron for batching, and ferrotungsten, ferromanganese, ferrotitanium and ferrochrome are dried and then classified and placed for use; then the above-mentioned configured scrap steel, ferromanganese and ferrochrome Put the ingredients into the furnace for heating, add ferro-tungsten at the later stage of smelting, add ferro-titanium into the furnace after melting, the melting temperature is 1650°C, add 0.1% aluminum particles after about 2 minutes to deoxidize and leave the furnace; then pouring, the pouring temperature is 1500°C; then quenched at 1000°C for 30 minutes, then air cooled, then quenched at 950°C for 30 minutes, then water cooled, then quenched at 600°C for 5 minutes, then water cooled, and then tempered at 200°C for 2 hours, then air cooled to ...

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Abstract

The invention relates to the field of wear-resistant cast steel, in particular to a manganese-tungsten-titanium wear-resistant cast steel and a preparation method thereof. The wear-resistant cast steel is prepared from, by mass, 0.20-0.35% of C, 1.0-2.0% of W, 0.5-1.5% of Si, 0.8-1.5% of Mn, 1.0-2.0% of Cr, 1.0-2.0% of Ti, smaller than or equal to 0.04% of S, smaller than or equal to 0.04% of P and the balance Fe. In the preparation process, tungsten atoms exist in molten steel and can partially substitute iron atoms in carbide in position, (W,Fe)3C is formed, the microhardness of common cementite is about 800 Hv, the microhardness can be improved by adding tungsten atoms and can reach 1600-1800 Hv or so, and thus the hardness of the cast steel is improved; meanwhile, the element Ti is added, molten steel can generate adequate nucleation sites TiC, and thus the particle number of the cast steel is greatly increased.

Description

technical field [0001] The invention relates to the field of wear-resistant cast steel materials, in particular to manganese-tungsten-titanium wear-resistant cast steel and a preparation method thereof. Background technique [0002] At present, in the field of wear-resistant materials, wear-resistant materials with martensite or bainite matrix structure or third-generation wear-resistant materials with particle-reinforced phases in addition to martensite, bainite, and retained austenite matrix are mostly used. Material-high chromium cast steel to develop wear-resistant parts, because there is a high-hardness reinforcing phase Cr7C3 in high-chromium cast steel, and its carbide microhardness reaches HV1300~1600, so it is better than the previous two generations of wear-resistant materials- The performance of white cast steel and high manganese steel has been greatly improved, and the hardness can reach HRC60-65. However, because the carbides are usually elongated and relativel...

Claims

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Application Information

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IPC IPC(8): C22C38/18C22C38/14C22C38/12C22C38/04C22C38/02C22C33/06
CPCC22C38/18C22C33/06C22C38/02C22C38/04C22C38/12C22C38/14
Inventor 黎超英吴沛荣
Owner LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
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