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Manganese-tungsten-titanium alloy steel and processing process thereof

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

Active Publication Date: 2016-06-15
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

[0032] Clean up scrap steel, ferro tungsten, ferromanganese, ferro-titanium, ferro-boron, ferromolybdenum, and ferrochromium. The mass fractions are 0.20%C, 1.0%W, 1.5%Si, 1.5%Mn, 1.0%Cr, 1.0%Ti , 1.0% B, 0.1% Mo, 0.04% S, 0.04% P, and the balance is the chemical proportion of iron for batching, and dry tungsten, ferromanganese, ferro-titanium, ferro-boron, ferromolybdenum and ferrochromium Place them separately for use; then put the above configured scrap steel, ferro-tungsten, ferromanganese, ferrochrome, and ferromolybdenum ingredients into the furnace for heating, add ferro-tungsten and ferro-boron in the later stage of smelting, and perform isothermal treatment after melting. , The smelting temperature is 1550℃, the isothermal treatment temperature is 1600℃, and the isothermal treatment time is 8min; then add aluminum wire with 0.1% molten steel mass fraction for pre-deoxidation, after pre-deoxidation, add ferro-titanium to the furnace, and add 0.1 after about 2min % Of th...

Embodiment 2

[0034] Clean up scrap steel, ferro tungsten, ferromanganese, ferro-titanium, ferro-boron, ferromolybdenum and ferrochromium, and the mass fractions are 0.3%C, 1.5%W, 1%Si, 1.1%Mn, 1.5%Cr, 1.5%Ti , 1.2%B, 0.2%Mo, 0.03%S, 0.03%P, and the balance is the chemical ratio of iron for batching, and dry tungsten iron, manganese iron, titanium iron, boron iron, molybdenum and ferrochrome Place them separately for use; then put the above configured scrap steel, ferro-tungsten, ferromanganese, ferrochrome, and ferromolybdenum ingredients into the furnace for heating, add ferro-tungsten and ferro-boron in the later stage of smelting, and perform isothermal treatment after melting. , The smelting temperature is 1600℃, the isothermal treatment temperature is 1600℃, and the isothermal treatment time is 7min; then add aluminum wire with a molten steel mass fraction of 0.15% for pre-deoxidation, after pre-deoxidation, add ferro-titanium into the furnace, and add 0.15 after about 2min % Of the al...

Embodiment 3

[0036] Clean up scrap steel, ferro tungsten, ferromanganese, ferro-titanium, ferro-boron, ferromolybdenum and ferrochromium, and the mass fractions are 0.35%C, 2.0%W, 0.5%Si, 0.8%Mn, 2.0%Cr, 2.0%Ti , 1.5% B, 0.3% Mo, 0.02% S, 0.03% P, the balance is the chemical ratio of iron for batching, and dry tungsten ferromanganese, ferromanganese, ferro titanium, boron ferro, ferromolybdenum and ferrochromium Place them separately for use; then put the above configured scrap steel, ferro-tungsten, ferromanganese, ferrochrome, and ferromolybdenum ingredients into the furnace for heating, add ferro-tungsten and ferro-boron in the later stage of smelting, and perform isothermal treatment after melting. , The smelting temperature is 1650℃, the isothermal treatment temperature is 1600℃, and the isothermal treatment time is 5min; then add aluminum particles with a mass fraction of molten steel 0.1% for pre-deoxidation, after pre-deoxidation, add ferro-titanium into the furnace, and add 0.15 aft...

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Abstract

The invention relates to the field of wear resistant cast steel, in particular to manganese-tungsten-titanium alloy steel and a processing process thereof. The wear resistant cast steel consists of the following components in percentage by mass: 0.20 to 0.35 percent of C, 1.0 to 2.0 percent of W, 0.5 to 1.5 percent of Si, 0.8 to 1.5 percent of Mn, 1.0 to 2.0 percent of Cr, 1.0 to 2.0 percent of Ti, 1.0 to 1.5 percent of B, 0.1 to 0.3 percent of Mo, less than or equal to 0.04 percent of S, less than or equal to 0.04 percent of P, and the balance of iron. When the manganese-tungsten-titanium alloy steel is prepared, tungsten atoms exist in molten steel and can partially substitute the positions of iron atoms in a carbide to form (W,Fe)3C; the microhardness of a common cementite is about 800 Hv; the microhardness can be improved by adding the tungsten atoms, and can reach about 1,600 to 1,800 Hv, so that the harness of the cast steel can be improved; meanwhile, the Ti element is also added, so that the molten liquid can form enough nucleation sites TiC, and the number of particles of the molten liquid can be 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 alloy steel and its processing technology. Background technique [0002] At present, in the field of wear-resistant materials, most of the wear-resistant materials with martensite or bainite matrix are used, or the third-generation wear-resistant materials with particle reinforcement phase in addition to martensite and bainite and retained austenite matrix Material-High chromium cast steel develops wear-resistant parts. Because there is also a high-hardness reinforcement phase Cr7C3 in high chromium cast steel, its carbide microhardness reaches HV1300~1600, so it is better than the previous two generations of wear-resistant materials- The properties of white cast steel and high manganese steel have been greatly improved, and the hardness can reach HRC60~65. However, because the carbides are usually elongated and relatively coarse, their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/12C22C38/02C22C38/04C22C38/18C22C38/14C22C33/04C21D1/18
CPCC21D1/18C22C33/04C22C38/02C22C38/04C22C38/12C22C38/14C22C38/18C22C38/32
Inventor 黎超英吴沛荣
Owner LIUZHOU KAITONG NEW MATERIAL TECH CO LTD
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