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High-tenacity boron-containing high-chromium abrasion-resistant alloy and preparation method thereof

A technology of wear-resistant alloy and high toughness, which is applied in the field of iron and steel materials to achieve the effects of small loss, increased recovery rate and stable recovery rate

Inactive Publication Date: 2016-02-10
DANYANG JIAWEI WEAR RESISTANT MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under impact wear conditions, the wear resistance of martensitic matrix materials is not as good as that of austenitic matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The chemical composition and mass percentage of a high-toughness boron-containing high-chromium wear-resistant alloy are: 0.20%C, 15%Cr, 0.4%Mo, 0.5%Si, 3.80%Mn, 0.80%B, 0.60%Cu, 0.30%Ti ,0.30%V, 0.08%Nb, 0.06%Al, 0.10%Ca, 0.07%Y, 0.08%Ce, 0.06%N, 0.075%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0049] Its manufacturing process steps are:

[0050] (1) Manufacture of boron agent and metamorphic inoculant:

[0051] Crushing ferrovanadium, ferrotitanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powder, and crushing 60-100 mesh Al, BC, BN, B 2 o 3 、Si 3 N 4 Together with modified elements rare earth Ce and Y, according to mass percentage 0.80%B, 0.30%Ti, 0.30%V, 0.08%Nb, 0.06%Al, 0.10%Ca, 0.07%Y, 0.08%Ce, 0.06%N, 0.075%K , mixed evenly after proportioning, packaged with low-carbon steel strips with a thickness of 0.12-0.25mm, rolled into metal cored wires with a d...

Embodiment 2

[0069] The chemical composition and mass percentage of a high-toughness boron-containing high-chromium wear-resistant alloy are: 0.40%C, 18%Cr, 0.6%Mo, 0.9%Si, 4.0%Mn, 1.3%B, 0.9%Cu, 0.8%Ti ,0.80%V, 0.15%Nb, 0.08%Al, 0.15%Ca, 0.15%Y, 0.15%Ce, 0.10%N, 0.10%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0070] Its manufacturing process steps are:

[0071] (1) Manufacture of boron agent and metamorphic inoculant:

[0072] Crushing ferrovanadium, ferrotitanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powder, and crushing 60-100 mesh Al, BC, BN, B 2 o 3 、Si 3 N 4 Together with the modified elements rare earth Ce and Y, the mass percentage is 1.3%B, 0.8%Ti, 0.80%V, 0.15%Nb, 0.08%Al, 0.15%Ca, 0.15%Y, 0.15%Ce, 0.10%N, 0.10%K Mix evenly after proportioning, use low-carbon steel strips with a thickness of 0.12-0.25mm to pack, roll into metal cored wires with a diameter of 8-15mm,...

Embodiment 3

[0090] The chemical composition and mass percentage of a high-toughness boron-containing high-chromium wear-resistant alloy are: 0.6%C, 20%Cr, 0.8%Mo, 1.10%Si, 6.0%Mn, 2.0%B, 1.5%Cu, 1.0%Ti ,1.0%V, 0.3%Nb, 0.10%Al, 0.25%Ca, 0.2%Y, 0.3%Ce, 0.20%N, 0.15%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0091] Its manufacturing process steps are:

[0092] (1) Manufacture of boron agent and metamorphic inoculant:

[0093] Crushing ferrovanadium, ferrotitanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powder, and crushing 60-100 mesh Al, BC, BN, B 2 o 3 、Si 3 N 4 Together with the modified elements rare earth Ce and Y, the mass percentage is 2.0%B, 1.5%Cu, 1.0%Ti, 1.0%V, 0.3%Nb, 0.10%Al, 0.25%Ca, 0.2%Y, 0.3%Ce, 0.20%N , 0.15% K ratio and mixed evenly, packaged with low-carbon steel strips with a thickness of 0.12-0.25mm, rolled into metal cored wires with a diameter of 8-15mm, o...

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Abstract

The invention discloses a high-tenacity boron-containing high-chromium abrasion-resistant alloy and a preparation method thereof. The high-tenacity boron-containing high-chromium abrasion-resistant alloy comprises, by mass, 0.20%-0.6% of C, 15%-20% of Cr, 0.5%-1.10% of Si, 3.5%-6.0% of Mn, 0.4%-2.3% of B, 0.4%-1.5% of Cu, 0.3%-1.2% of Ti, 0.10%-1.0% of V, 0.05%-0.3% of Nb, 0.05%-0.10% of Al, 0.10%-0.25% of Ca, 0.05%-0.2% of Y, 0.05%-0.3% of Ce, 0.04%-0.20% of N, 0.05%-0.15% of K, 0-0.03% of S, 0-0.04% P, and the balance Fe. Scrap steel and ferrochromium are smelted to the temperature of 1560 DEG C to 1620 DEG C by using an intermediate frequency furnace, after ferrovanadium, ferrotitanium, potassium oxide, silicon-calcium-barium alloy, ferrochromium containing nitrogen, Al, BC, BN, B2O3, Si3N4, Ce and Y in 60 meshes to 100 meshes are proportioned together according to the mass percent, the mixture is rolled into metal cored wires of which the diameters range from 8 mm to 15 mm through the adoption of low-carbon steel of which the thickness ranges from 0.12 mm to 0.25 mm, the metal cored wires serving as a boron supplying agent are added into smelted molten steel, then boron is added, and modifying inoculation is conducted. The molten steel pouring temperature is 1400 DEG C to 1450 DEG C, heat preservation is conducted on a casting for 2 h to 4 h at the temperature of 920 DEG C to 1150 DEG C, and then the casting is subjected to air cooling to the room temperature. The high-tenacity boron-containing high-chromium abrasion-resistant alloy has the advantages of being good in strength, hardness, tenacity, thermal-fatigue resistance and abrasion resistance and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of iron and steel materials, and relates to a casting wear-resistant mold steel and a preparation method thereof, in particular to a high-toughness boron-containing high-chromium wear-resistant alloy and a preparation method thereof. Background technique [0002] The development of modern science and technology has higher and higher requirements for materials. Wear and tear is common in mining, metallurgy, machinery, electric power, coal, petroleum, building materials, transportation and other industrial sectors and has become an important cause of equipment damage or material failure and energy consumption. , It is also one of the three main failure modes of mechanical parts. Research and development of a new generation of wear-resistant materials to reduce metal wear is of great significance to the national economy. At present, the metal wear-resistant materials widely used mainly include alloy steel and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/34C22C33/06
Inventor 丁家伟皇志富丁刚耿德英鹿微微鹿策施孟达
Owner DANYANG JIAWEI WEAR RESISTANT MATERIAL TECH CO LTD
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