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High-speed steel and heat treatment technique thereof

A high-speed steel and a new type of technology, applied in the field of new high-speed steel and its heat treatment process, can solve the problems of low production cost and high manufacturing cost, and achieve the effects of increasing hardenability, reducing production cost and saving the amount of molybdenum used.

Inactive Publication Date: 2006-08-30
周向儒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the high manufacturing cost of the existing general-purpose W6Mo5Cr4V2 high-speed steel and maintain sufficient wear resistance and toughness of the steel, the purpose of the present invention is to provide a substitute for W6Mo5Cr4V2, which has sufficient toughness and wear resistance, and can be used as a die and cutting tool , knives, and new high-speed steel with low production cost

Method used

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  • High-speed steel and heat treatment technique thereof

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Experimental program
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Effect test

Embodiment 1

[0037]A new type of high-speed steel, the high-speed steel includes: carbon C0.95%, silicon Si0.3%, manganese Mn0.3%, chromium Cr10%, tungsten W4%, molybdenum Mo1.0%, vanadium V1. 0%, nickel Ni0.2%, cobalt Co1%, niobium Nb1.2%, titanium Ti0.3%, rare earth elements 0.05%, sulfur S≤0.015%, phosphorus P≤0.02%, and the rest is iron Fe.

[0038] The heat treatment process of the above-mentioned novel chromium steel series high-speed steel comprises the following steps:

[0039] (1), the first preheating, the temperature is 600 ℃, and the preheating time is 60 minutes;

[0040] (2), the second preheating, the temperature is 900 ℃, and the preheating time is 45 minutes;

[0041] (3) Quenching heating, the quenching heating temperature is 1100°C-1140°C, the quenching time is: (25+material thickness / 2) minutes, and then oil-cooled to 200°C-250°C;

[0042] (4) For the first tempering, the tempering temperature is 520°C to 540°C, the tempering time is 120 minutes, and then air-cooled t...

Embodiment 2

[0046] A new type of high-speed steel, the high-speed steel includes: carbon C0.9%, silicon Si0.2%, manganese Mn0.2%, chromium Cr9.5%, tungsten W3.5%, molybdenum Mo0.6% by weight percentage , Vanadium V0.4%, Nickel Ni0.1%, Cobalt Co0.5%, Niobium Nb0.8%, Titanium Ti0.3%, Rare Earth Elements 0.05%, Sulfur S≤0.015%, Phosphorus P≤0.02%, the rest For iron Fe.

[0047] The heat treatment process of the above-mentioned novel chromium steel series high-speed steel comprises the following steps:

[0048] (1), the first preheating, the temperature is 600 ℃, and the preheating time is 60 minutes;

[0049] (2), the second preheating, the temperature is 900 ℃, and the preheating time is 45 minutes;

[0050] (3) Quenching heating, the quenching heating temperature is 1100℃~1140℃, the quenching time is: (25+material thickness / 2) minutes, then cooling in salt bath, grading heat preservation at 600℃, and then salt bath to 200℃~250℃ ;

[0051] (4) For the first tempering, the tempering temp...

Embodiment 3

[0055] A new type of high-speed steel, the high-speed steel includes: carbon C1.0%, silicon Si0.4%, manganese Mn0.4%, chromium Cr10.5%, tungsten W4.5%, molybdenum Mo1.5% by weight percentage , Vanadium V1.0%, Nickel Ni0.3%, Cobalt Co1.5%, Niobium Nb1.8%, Titanium Ti0.3%, Rare Earth Elements 0.05%, Sulfur S≤0.015%, Phosphorus P≤0.02%, the rest For iron Fe.

[0056] The heat treatment process of the above-mentioned novel chromium steel series high-speed steel comprises the following steps:

[0057] (1), the first preheating, the temperature is 600 ℃, and the preheating time is 60 minutes;

[0058] (2), the second preheating, the temperature is 900 ℃, and the preheating time is 45 minutes;

[0059] (3) Quenching heating, the quenching heating temperature is 1100°C-1140°C, the quenching time is: (25+material thickness / 2) minutes, and then air-cooled to 200°C-250°C;

[0060] (4) For the first tempering, the tempering temperature is 520°C to 540°C, the tempering time is 120 minut...

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Abstract

This invention relates to new style alloy high-speed steel, especially relates to new style chrome steel system high-speed steel and its heat treatment technique. The weight percentage of the elements is that carbon 0.85-1.05%, silicon 0.2-0.4%, manganese 0.2-0.4%, chrome 9.0-11.0%, tungsten3.5-4.5%, molybdenum 0.6-2.0%, vanadium 0.4-2.0%, nickel 0.1-0.3%, cobalt 0.3-5.0%, niobium 0.8-1.8%, sulfur not more than 0.015%, phosphor not more than 0.02%, the rest is iron. Compared to home made die steel, the toughness and wear resistance of the high-speed steel in this invention is enough, it can be used to make all kinds of cold die, cutting tool, cutlery, and the production cost is low. This invention also provides the heat treating technique of the high-speed steel.

Description

technical field [0001] The invention relates to a novel alloy high-speed steel, in particular to a novel high-speed steel and its heat treatment process. Background technique [0002] The existing high-speed steel materials used for cold stamping dies, cutting tools and knives are generally made of domestic high-speed steel W6Mo5Cr4V2. The chemical composition of the alloy is (weight%): C0.80%~0.90%, Si≤0.45%, Mn≤0.40%, W5.50%~6.75%, Mo4.50%~5.50%, Cr3.80%~4.40%, V1.75%~2.20%, S≤0.03%, P≤0.03%, and the rest is Fe. The high-speed steel contains a relatively high content of Mo. Due to the lack of Mo in the international market, the price is relatively expensive, and the content of tungsten and vanadium in the high-speed steel is also high, so the cost of producing the alloy is also greatly increased. [0003] Chinese invention patent (notification number is CN1014081) discloses low-alloy high-performance high-speed steel, which is characterized in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/52C21D11/00C21D1/18C21D1/56
Inventor 周向儒赵春华廖德秀宋利秋
Owner 周向儒
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