Impact-resistant high-boron medium-chromium abrasion-resistant alloy and preparing method thereof

A wear-resistant alloy and impact-resistant technology, applied in the field of steel materials, to achieve the effect of reducing oxidation, stable recovery rate and small loss

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 an impact-resistant high-boron medium-chromium wear-resistant alloy: 0.20%C, 8.0%Cr, 0.60%Si, 4.0%Mn, 0.7%B, 0.70%Cu, 0.50%Ti, 0.10%Ca , 0.10% Ce, 0.10% N, 0.15% Nb, 0.06% K, S <0.03%, P <0.04%, the balance is Fe and inevitable impurity elements.

[0049] The manufacturing process steps are:

[0050] (1) For the manufacture of boron agent and degeneration inoculant:

[0051] Crush ferro-vanadium, ferro-titanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochromium into powder of 60-100 mesh, and BC, BN, B of 60-100 mesh 2 O 3 , Si 3 N 4 And metamorphic elements rare earth Ce, B 2 O 3 Together with the mass percentage of 0.7% B, 0.50% Ti, 0.10% Ca, 0.10% Ce, 0.10% N, 0.15% Nb, and 0.06% K, the mixture is uniformly mixed, and it is packaged with a low carbon steel strip with a thickness of 0.12~0.25mm. Rolled into a metal cored wire with a diameter of 8-15mm, or directly put into a low...

Embodiment 2

[0069] The chemical composition and mass percentage of an impact-resistant high-boron medium-chromium wear-resistant alloy: 0.40%C, 10.0%Cr, 0.8%Si, 5.0%Mn, 2.0%B, 1.0%Cu, 0.70%Ti, 0.15%Ca , 0.20% Ce, 0.12% N, 0.20% Nb, 0.10% K, S <0.03%, P <0.04%, the balance is Fe and inevitable impurity elements.

[0070] The manufacturing process steps are:

[0071] (1) For the manufacture of boron agent and degeneration inoculant:

[0072] Crush ferro-vanadium, ferro-titanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochromium into powder of 60-100 mesh, and BC, BN, B of 60-100 mesh 2 O 3 , Si 3 N 4 And metamorphic elements rare earth Ce, B 2 O 3 Together with the mass percentage 2.0%B, 0.70%Ti, 0.15%Ca, 0.20%Ce, 0.12%N, 0.20%Nb, 0.10%K, the mixture is uniformly mixed, and it is packaged with a low carbon steel strip with a thickness of 0.12~0.25mm. Rolled into a metal cored wire with a diameter of 8-15mm, or directly put into a low-carbon steel p...

Embodiment 3

[0090] The chemical composition and mass percentage of an impact-resistant high-boron medium-chromium wear-resistant alloy: 0.60%C, 12.0%Cr, 1.0%Si, 5.5%Mn, 2.4%B, 1.50%Cu, 0.90%Ti, 0.25%Ca , 0.3% Ce, 0.18% N, 0.4% Nb, 0.13% K, S <0.03%, P <0.04%, the balance is Fe and inevitable impurity elements.

[0091] The manufacturing process steps are:

[0092] (1) For the manufacture of boron agent and degeneration inoculant:

[0093] Crush ferro-vanadium, ferro-titanium, ferroniobium, potassium oxide, silicon-calcium-barium alloy, and nitrogen-containing ferrochromium into powder of 60-100 mesh, and BC, BN, B of 60-100 mesh 2 O 3 , Si 3 N 4 And metamorphic elements rare earth Ce, B 2 O 3 Together in accordance with the mass percentage 2.4%B, 0.90%Ti, 0.25%Ca, 0.3%Ce, 0.18%N, 0.4%Nb, 0.13%K, mixed evenly after the proportioning, and packed with a low carbon steel strip with a thickness of 0.12~0.25mm , Rolled into a metal cored wire with a diameter of 8-15mm, or directly put into a low-carb...

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Abstract

The invention discloses impact-resistant high-boron medium-chromium abrasion-resistant alloy. The impact-resistant high-boron medium-chromium abrasion-resistant alloy is prepared from, by mass, 0.10%-0.60% of C, 6.0%-13.0% of Cr, 0.4%-1.0% of Si, 3.2%-5.8% of Mn, 0.4%-3.0% of B, 0.3%-1.70% of Cu, 0.20%-0.90% of Ti, 0.05%-0.25% of Ca, 0.03%-0.3% of Ce, 0.02%-0.18% of N, 0.07%-0.4% of Nb, 0.04%-0.13% of K, smaller than 0.03% of S, smaller than 0.04% of P and the balance Fe. The mixture is melted to 1,560-1,620 DEG C through an intermediate frequency furnace; after ferrovanadium with the particle size of 60-100 meshes, ferrotitanium with the particle size of 60-100 meshes, potassium oxide with the particle size of 60-100 meshes, silicon-calcium-barium alloy with the particle size of 60-100 meshes, nitrogen-containing ferrochromium with the particle size of 60-100 meshes, BC, BN, B2O3, Si3N4 and Ce are matched according to the mass percent, the mixture is rolled into metal cored wires with the diameter of 8-15 mm through low-carbon steel with the thickness of 0.12-0.25 mm to serve as boron supplying agents to be added into smelted liquid steel for boron adding and metamorphic inoculation processing, and the liquid-steel pouring temperature is 1,400-1,450 DEG C; and castings are kept at the temperature of 920-1,150 DEG C for 2-4 hours and are cooled with air to the indoor temperature. The impact-resistant high-boron medium-chromium abrasion-resistant alloy has the beneficial effects of being good in strength, hardness, toughness, heat fatigue resistance and abrasive 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 an impact-resistant high-boron medium-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 ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/32C22C38/20C22C38/28C22C38/26C22C33/06C21D6/00
CPCC22C38/38C21D6/002C21D2211/001C21D2211/008C22C33/06C22C38/001C22C38/002C22C38/005C22C38/20C22C38/26C22C38/28C22C38/32
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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