Polybasic abrasion-resistant high-boron alloy steel and preparation method thereof

An alloy steel and high boron technology is applied in the multi-element wear-resistant high-boron alloy steel and its preparation, casting wear-resistant die steel and its preparation fields, to achieve high strength, toughness, high impact and wear resistance, low loss and cost reduction. Effect

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

[0049] The chemical composition and mass percentage of a multi-element wear-resistant high-boron alloy steel are; %Cu, 0.2%Ti, 0.10%Ca, 0.09%Ce, 0.12%Y, 0.08%N, 0.07%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0050] Its manufacturing process steps are:

[0051] (1) Manufacture of boron agent and metamorphic inoculant:

[0052] Crush ferrovanadium, ferrotitanium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powders, and crush 60-100 mesh BC, BN, B 2 o 3 、Si 3 N 4 Together with the metamorphic element rare earth Ce and the reducing agent rare earth ferrosilicon, mix them evenly according to the mass percentage of 0.60%B, 0.3%Ti, 0.10%V, 0.10%Ca, 0.08%Ce, 0.06%N, and 0.07%K. Packed in 0.15mm low carbon steel strip, rolled into metal cored wire with a diameter of 10mm, or directly packed into low carbon steel pipe;

[0053] (2) Smelting

[0054] Melt scrap steel and ferrochrome in an ele...

Embodiment 2

[0070] The chemical composition and mass percentage of a multi-component wear-resistant high-boron alloy steel are; %Cu, 0.5%Ti, 0.20%Ca, 0.15%Ce, 0.15%Y, 0.12%N, 0.10%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0071] Its manufacturing process steps are:

[0072] (1) Manufacture of boron agent and metamorphic inoculant:

[0073] Crush ferrovanadium, ferrotitanium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powders, and crush 60-100 mesh BC, BN, B 2 o 3 、Si 3 N 4 Together with the metamorphic element rare earth Ce and the reducing agent rare earth ferrosilicon, mix them uniformly according to the mass percentage of 1.20%B, 0.5%Ti, 0.20%V, 0.20%Ca, 0.15%Ce, 0.12%N, and 0.10%K. Packed in 0.18mm low carbon steel strip, rolled into metal cored wire with a diameter of 13mm, or directly packed into low carbon steel pipe;

[0074] (2) Smelting

[0075] Melt scrap steel and ferrochrome in a...

Embodiment 3

[0091] The chemical composition and mass percentage of a multi-component wear-resistant high-boron alloy steel are; %Cu, 0.8%Ti, 0.25%Ca, 0.3%Ce, 0.2%Y, 0.18%N, 0.13%K, S<0.03%, P<0.04%, the balance is Fe and unavoidable impurity elements.

[0092] Its manufacturing process steps are:

[0093] (1) Manufacture of boron agent and metamorphic inoculant:

[0094] Crush ferrovanadium, ferrotitanium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochrome into 60-100 mesh powders, and crush 60-100 mesh BC, BN, B 2 o 3 、Si 3 N 4 Together with the metamorphic element rare earth Ce and the reducing agent rare earth ferrosilicon, mix them evenly according to the mass percentage of 2.0%B, 0.8%Ti, 0.30%V, 0.25%Ca, 0.3%Ce, 0.18%N, and 0.13%K. Packed in 0.25mm low carbon steel strip, rolled into metal cored wire with a diameter of 15mm, or directly packed into low carbon steel pipe;

[0095] (2) Smelting

[0096] Melt scrap steel and ferrochrome in an elect...

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Abstract

The invention discloses polybasic abrasion-resistant high-boron alloy steel and a preparation method thereof. The polybasic abrasion-resistant high-boron alloy steel comprises, by mass, 0.20%-0.4% of C, 20%-26% of Cr, 0.7%-1.10% of Si, 3.6%-5.4% of Mn, 0.5%-2.0% of B, 0.3%-1.8% of Cu, 0.2%-0.8% of Ti, 0.10%-0.30% of V, 0.10%-0.25% of Ca, 0.05%-0.3% of Ce, 0.05%-0.2% of Y, 0.02%-0.18% of N, 0.04%-0.13% of K, less than 0.03% of S, less than 0.04% of P, and the balance Fe. The above components are smelted to be at the temperature of 1560 DEG C to 1620 DEG C by using an intermediate frequency furnace, after ferrovanadium in 60 meshes to 100 meshes, potassium oxide, silicon-calcium-barium alloy, ferrochromium containing nitrogen, BC, BN, B2O3, Si3N4 and modifying element rear earth Ce and Y are proportioned together according to the mass percent, the mixture is rolled into metal cored wires of which the diameter is from 8 mm to 15 mm through the adoption of low-carbon steel of which the thickness is from 0.12 mm to 0.25 mm, the metal cored wires, serving as 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 polybasic abrasion-resistant high-boron alloy steel has the advantages of being good in strength, hardness, tenacity, thermal-fatigue resistance and abrasion resistance, low in production cost and the like.

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 multi-element wear-resistant high-boron 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C33/04
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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