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Novel chrome steel high speed steel and heat treatment process thereof

A technology of high-speed steel and chromium steel, which is applied in the field of new chromium steel high-speed steel and its heat treatment process, can solve the problems of low production cost and high production cost, increase hardenability, reduce production cost, and save molybdenum usage Effect

Inactive Publication Date: 2006-09-06
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 a new type of chromium steel high-speed steel with low production cost

Method used

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  • Novel chrome steel high speed steel and heat treatment process thereof

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Experimental program
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Effect test

Embodiment 1

[0037]New chromium steel high-speed steel, the high-speed steel by weight percentage includes: carbon C0.95%, silicon Si0.3%, manganese Mn0.3%, chromium Cr10%, tungsten W5.5%, molybdenum Mo1.0%, Vanadium V1.0%, Nickel Ni0.2%, Cobalt Co0.5%, Niobium Nb1.2%, Titanium Ti0.3%, Rare Earth Elements 0.05%, Sulfur S≤0.015%, Phosphorus P≤0.02%, and the balance 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 500 ℃, 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 1120°C-1160°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 1...

Embodiment 2

[0046] A new type of chromium steel high-speed steel, the high-speed steel includes: carbon C0.9%, silicon Si0.2%, manganese Mn0.2%, chromium Cr9.5%, tungsten W5.0%, molybdenum Mo0.6 %, Vanadium V0.6%, Nickel Ni0.1%, Cobalt Co0.3%, Niobium Nb0.8%, Titanium Ti0.3%, Rare Earth Elements 0.05%, Sulfur S≤0.015%, Phosphorus P≤0.02%, and the rest The amount is 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 500 ℃, 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 1120℃~1160℃, 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 temper...

Embodiment 3

[0055] A new type of chromium steel high-speed steel, the high-speed steel by weight percentage includes: carbon C1.0%, silicon Si0.4%, manganese Mn0.4%, chromium Cr10.5%, tungsten W6.0%, molybdenum Mo1.5 %, vanadium V1.5%, nickel Ni0.3%, cobalt Co0.8%, niobium Nb1.8%, titanium Ti0.3%, rare earth 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 500 ℃, 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 1120°C-1160°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...

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Abstract

The invention relates to a novel high-speed alloys steel, in particular a novel chromium series high speed steel and its heat treatment process. The steel comprises the components (by weight percent) of C 0.85%-1.05%, Si 0.2-0.4%, Mn 0.2-0.4%, Cr 9.0-11.0%, W 4.5-6.5%, Mo 0.6-2.0%, V 0.6-2.0%, Ni 0.1-0.3%, Co 0.3-5.0%, Nb 0.8%-1.8%, S <=0.015%, P<=0.02%, and balancing Fe. The high speed steel has enough tenacity and abrasion-resistance, its thermal treatment process is also disclosed.

Description

technical field [0001] The invention relates to a novel alloy high-speed steel, in particular to a novel chromium-steel-based 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 i...

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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