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Manganese-tungsten-titanium wear-resisting cast steel and machining process thereof

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

Inactive Publication Date: 2016-07-20
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

[0029]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 ferrotungsten at the later stage of smelting, and carry out isothermal treatment after melting. The melting temperature is 1550°C, the isothermal treatment temperature is 1600°C, and the isothermal treatment time is 8 minutes; The aluminum wire is pre-deoxidized, and ferro-titanium is added to the furnace after pre-deoxidation. After about 2 minutes, 0.1% aluminum particles are added to the furnace for final deoxidation; The modifying agent prepared by Zn is uniformly broken down to small part...

Embodiment 2

[0031] 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 The ingredients are put into the furnace for heating, and ferrotungsten is added at the later stage of smelting, and isothermal treatment is carried out after the melt is cleared. The melting temperature is 1600°C, the isothermal treatment temperature is 1600°C, and the isothermal treatment time is 7 minutes; The aluminum wire is pre-deoxidized, and ferro-titanium is added to the furnace after pre-deoxidation. After about 2 minutes, 0.15% aluminum particles are added to the furnace for final deoxidation; The modifying agent prepared by Zn is unifor...

Embodiment 3

[0033] 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 ferrotungsten at the later stage of smelting, and carry out isothermal treatment after melting, the melting temperature is 1650°C, the isothermal treatment temperature is 1600°C, and the isothermal treatment time is 5 minutes; Aluminum pellets are pre-deoxidized, and ferro-titanium is added to the furnace after pre-deoxidation. After about 2 minutes, 0.15% aluminum wire is added to the furnace for final deoxidation; The modifying agent prepared by Zn is uniformly broken down to small particle...

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Abstract

The invention relates to the field of wear-resisting cast steel, in particular to manganese-tungsten-titanium wear-resisting cast steel and a machining process thereof. The wear-resisting cast steel is prepared from, by mass percent, 0.20% to 0.35% of C, 1.0% to 2.0% of W, 0.5% to 1.5% of Si, 0.8% to 1.5% of Mn, 1.0% to 2.0% of Cr, 1.0% to 2.0% of Ti, not larger than 0.04% of S, not larger than 0.04% of P and the balance iron. In the preparation process, tungsten atoms exist in molten steel and can partially replace the positions of iron atoms in carbide, and (W, Fe) 3C is formed; and but the microhardness of common cementite is about 800 Hv, the microhardness can be improved by adding the tungsten atoms and can range from about 1,600 Hv to 1,800 Hv, and therefore the hardness of the cast steel is improved. Meanwhile, an element Ti is added, so that enough nucleation material points TiC are generated by the molten liquid, and the number of particles of TiC is greatly increased.

Description

technical field [0001] The invention relates to the field of wear-resistant cast steel materials, in particular to a manganese-tungsten-titanium wear-resistant cast steel and its processing technology. 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 relatively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/22C22C38/28C22C38/02C22C33/04C21C7/06
CPCC21C7/0006C21C7/06C22C33/04C22C38/02C22C38/22C22C38/28Y02P10/20
Inventor 黎超英吴沛荣
Owner LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
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