Boracic wear-resisting alloy steel and preparation method thereof

A wear-resistant technology of alloy steel and boron, which is applied in the field of iron and steel materials to achieve the effects of increasing yield, improving impact toughness, and stabilizing recovery

Inactive Publication Date: 2016-03-09
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 boron-containing wear-resistant alloy steel are: 0.20%C, 2%Cr, 0.5%Si, 3.90%Mn, 0.8%B, 0.8%Cu, 0.2%Ti, 0.10%Ca, 0.13% ReSiMg, 0.07%N, 0.15%Nb, 0.03%Al, 0.06%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0049] The 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 the modified element ReSiMg, mix them evenly according to the mass percentage of 0.8%B, 0.2%Ti, 0.10%Ca, 0.13%ReSiMg, 0.07%N, 0.15%Nb, 0.03%Al, 0.06%K, and use a thickness of 0.12 to 0.25 mm low-carbon steel strip packaging, rolled into a metal cored wire with a diameter of 8-15mm, or directly packed into a low-carbon steel pipe;

[0052] (2) ...

Embodiment 2

[0067] The chemical composition and mass percentage of a boron-containing wear-resistant alloy steel are: 0.35%C, 4%Cr, 0.8%Si, 4.5%Mn, 1.5%B, 0.9%Cu, 0.4%Ti, 0.20%Ca, 0.20% ReSiMg, 0.12%N, 0.20%Nb, 0.06%Al, 0.10%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0068] The manufacturing process steps are:

[0069] (1) Manufacture of boron agent and metamorphic inoculant:

[0070] 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 element ReSiMg, mix them evenly according to the mass percentage of 1.5%B, 0.4%Ti, 0.20%Ca, 0.20%ReSiMg, 0.12%N, 0.20%Nb, 0.06%Al, 0.10%K, and use a thickness of 0.12 to 0.25 mm low-carbon steel strip packaging, rolled into a metal cored wire with a diameter of 8-15mm, or directly packed into a low-carbon steel pipe;

[0071] (2) S...

Embodiment 3

[0086] The chemical composition and mass percentage of a boron-containing wear-resistant alloy steel are: 0.5%C, 6%Cr, 1.0%Si, 5.0%Mn, 2.5%B, 1.2%Cu, 0.6%Ti, 0.25%Ca, 0.3% ReSiMg, 0.18%N, 0.3%Nb, 0.08%Al, 0.13%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0087] The manufacturing process steps are:

[0088] (1) Manufacture of boron agent and metamorphic inoculant:

[0089] 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 element ReSiMg, mix them evenly according to the mass percentage of 2.5%B, 0.6%Ti, 0.25%Ca, 0.3%ReSiMg, 0.18%N, 0.3%Nb, 0.08%Al, 0.13%K, and use a thickness of 0.12 to 0.25 mm low-carbon steel strip packaging, rolled into a metal cored wire with a diameter of 8-15mm, or directly packed into a low-carbon steel pipe;

[0090] (2) Smelti...

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Abstract

The invention discloses boracic wear-resisting alloy steel and a preparation method thereof. The boracic wear-resisting alloy steel is prepared from, by mass percent, 0.20%-0.5% of C, 2%-6% of Cr, 0.4%-1.0% of Si, 3.0%-5.0% of Mn, 0.3%-2.5% of B, 0.2%-1.2% of Cu, 0.2%-0.6% of Ti, 0.05%-0.25% of Ca, 0.03%-0.3% of ReSiMg, 0.02%-0.18% of N, 0.05%-0.3% of Nb, 0.03%-0.08% of Al, 0.04%-0.13% of K, smaller than 0.03% of S, smaller than 0.04% of P and the balance Fe. Melting is carried out through an intermediate frequency furnace until the temperature ranges from 1,560 DEG C to 1,620 DEG C, ferrovanadium, ferrotitanium, potassium oxide, a silicon-calcium-barium alloy and nitrogen containing ferrochromium which are 60 meshes to 100 meshes, BC, BN, B2O3, Si3N4, Al and ReSiMg are matched according to the mass percent and then rolled into a metal cored wire with the diameter ranging from 8 mm to 15 mm through low-carbon steel with the thickness ranging from 0.12 mm to 0.25 mm, the metal cored wire is added into smelted molten steel as a boron supplying agent for boron supplying and metamorphic inoculation treatment, and the casting temperature of the molten steel ranges from 1,400 DEG C to 1,450 DEG C; and a casting is subjected to heat preservation for 2-4 hours at the temperature ranging from 920 DEG C to 1,150 DEG C, and air cooling is carried out to room temperature. The boracic wear-resisting alloy steel is good in strength, hardness, toughness, heat fatigue resistance and wear 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 boron-containing wear-resistant alloy steel 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 cast iron-based wear-res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/04C22C38/16C22C38/14C22C38/12C22C38/02C22C38/06C22C33/06B22D19/16B22D13/00C21D6/00
CPCC22C38/18B22D13/00B22D19/16C21D6/002C21D6/005C21D2211/001C21D2211/008C22C33/06C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C22C38/16C22C38/32
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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