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High-strength alloy tool steel

A high-strength alloy and tool steel technology, applied in the field of high-strength alloy tool steel, can solve the problems of reducing the strength of the material, damage to the wear resistance of the material, affecting the hardness of the material, etc. hard effect

Inactive Publication Date: 2003-06-11
SINOPEC OILFIELD EQUIP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material hardness of the existing alloy tool steel is usually up to about HRC56. If you want to increase the hardness, the toughness of the material will be reduced, thereby reducing the strength of the material, causing the material to be brittle, cracked, and collapsed; if the material is increased Toughness increases the strength of the material, which in turn affects the hardness of the material, and the wear resistance of the material is correspondingly damaged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: Component and content of Fe and alloy element are by weight:

[0014] C 0.48% Si 1.5

[0015] Mn 0.5%% Cr 5.5%

[0016] Mo 1.8% V 1.2%

[0017] P ≤ 0.03% S ≤ 0.03%

[0018] Fe balance.

[0019] The materials in the above examples have been subjected to high-temperature quenching and three tempering treatments, and the hardness reaches HRC58-62. The metallographic structure is tempered acicular martensite and fine, uniform carbides. The use performance under harsh working conditions, using this material to make the disc-shaped hob cutter ring of the tunnel construction shield machine, after comparative tests, its wear resistance and impact toughness are obviously better than the existing similar materials.

Embodiment 2

[0020] Embodiment 2: Component and content of Fe and alloy element are by weight:

[0021] C 0.4% Si 1.5

[0022] Mn 0.5% Cr 4.8%

[0023] Mo 1.5% V 1.0%

[0024] P ≤ 0.03% S ≤ 0.03%

[0025] Fe balance.

[0026] After high-temperature quenching and three tempering, the hardness reaches HRC56-58. The metallographic structure is tempered martensite and uniform carbide. The cutting tools made of this material can meet the performance of harsh working conditions.

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Abstract

The invention refers to a kind of high intensity alloy tool steel which is used in cutting knives, stone breaking knives and the model manufacturing field. It includes Fe and alloy elements, the shares and contents of Fe and alloy element is: C 0.4-0.6%, Cr3.5-6%, Mo0.5-2.5%, Si0.4-2.5%, V0.4-2.0%, Mn0.1-1.0% Fe is the residue. The alloy steel in the invention goes through 1100-1200 C degree high temperature quenching and 500-580 C degree backfire process three times, its highest rigidity can reach HRC58-62, gold phase tissue is quenching ma body and evenly, little carbide.

Description

technical field [0001] The invention relates to a high-strength alloy tool steel used in the technical field of cutting tools, rock-breaking tools and mold manufacturing, which further improves the performance of existing alloy tool steel materials. Background technique [0002] Alloy tool steel has been widely used in various fields of industrial production due to its high strength and hardness, including machinery manufacturing, oil drilling, mining, tunnels, etc. The material hardness of the existing alloy tool steel is usually up to about HRC56. If you want to increase the hardness, the toughness of the material will be reduced, thereby reducing the strength of the material, causing the material to be brittle, cracked, and collapsed; if the material is increased Toughness will increase the strength of the material, but it will also affect the hardness of the material, and the wear resistance of the material will be damaged accordingly. Contents of the invention [000...

Claims

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Application Information

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IPC IPC(8): C22C38/24C22C38/34
Inventor 周勇庆郭国忠帅柏春
Owner SINOPEC OILFIELD EQUIP CORP
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