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Novel high-speed steel

A high-speed steel and a new type of technology, applied in the field of new alloy high-speed steel, can solve the problems of high manufacturing cost and low production cost, and achieve the effect of reducing production cost, increasing hardenability and good purity

Inactive Publication Date: 2016-10-05
重庆展申机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A new type of high-speed steel, the high-speed steel includes: carbon C0.9%-1.2%, silicon Si0.21%-0.5%, manganese Mn0.18%-0.3%, chromium Cr9.5%-12.0% , tungsten W4%~4.8%, molybdenum Mo0.55%~2.2%, vanadium V0.5%~2.2%, nickel Ni0.05%~0.2%, cobalt Co0.25%~4.0%, niobium Nb0.7~2 %, sulfur S≤0.01%, phosphorus P≤0.01%, and the balance is iron Fe.

[0021] The heat treatment process of the above-mentioned novel chromium steel series high-speed steel comprises the following steps:

[0022] (1), the first preheating, the temperature is 600 ℃, and the preheating time is 60 minutes;

[0023] (2), the second preheating, the temperature is 900 ℃, and the preheating time is 45 minutes;

[0024] (3) Quenching heating, the quenching heating temperature is 1200°C-1240°C, the quenching time is: (25+material thickness / 2) minutes, and then oil-cooled to 250°C-270°C;

[0025] (4) For the first tempering, the tempering temperature is 500°C to 550°C, the tempering time is 110 minutes, and t...

Embodiment 2

[0029] A new type of high-speed steel, the high-speed steel includes: carbon C0.95% ~ 1.0%, silicon Si0.25% ~ 0.35%, manganese Mn0.22% ~ 0.3%, chromium Cr10% ~ 11%, tungsten W4%~4.3%, molybdenum Mo0.6%~1%, vanadium V0.6%~1.5%, nickel Ni0.1%~0.15%, cobalt Co1%~1.4%, niobium Nb0.9~1.5%, sulfur S ≤0.005%, phosphorus P≤0.005%, and the balance is iron Fe.

[0030] The heat treatment process of the above-mentioned novel chromium steel series high-speed steel comprises the following steps:

[0031] (1), the first preheating, the temperature is 600 ℃, and the preheating time is 60 minutes;

[0032] (2), the second preheating, the temperature is 900 ℃, and the preheating time is 45 minutes;

[0033] (3) Quenching heating, the quenching heating temperature is 1200℃~1240℃, the quenching time is: (25+material thickness / 2) minutes, then cooling in salt bath, grading heat preservation at 650℃, and then salt bath to 250℃~270℃ ;

[0034] (4) For the first tempering, the tempering temperat...

Embodiment 3

[0038] A new type of high-speed steel, the high-speed steel includes: carbon C0.95%, silicon Si0.35%, manganese Mn0.3%, chromium Cr11%, tungsten W4.5%, molybdenum Mo1.0%, vanadium V1.5%, nickel Ni0.15%, cobalt Co1.4%, niobium Nb1.2%, sulfur S≤0.003%, phosphorus P≤0.01%, and the balance is iron Fe.

[0039] The heat treatment process of the above-mentioned novel chromium steel series high-speed steel comprises the following steps:

[0040] (1), the first preheating, the temperature is 600 ℃, and the preheating time is 60 minutes;

[0041] (2), the second preheating, the temperature is 900 ℃, and the preheating time is 45 minutes;

[0042] (3) Quenching heating, the quenching heating temperature is 1200°C-1240°C, the quenching time is: (25+material thickness / 2) minutes, and then air-cooled to 250°C-270°C;

[0043](4) For the first tempering, the tempering temperature is 500°C to 550°C, the tempering time is 110 minutes, and then air-cooled to room temperature.

[0044] (5) Te...

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Abstract

The invention relates to a novel high-speed steel. The novel high-speed steel comprises, by weight, 0.9 to 1.2% of C, 0.21 to 0.5% of Si, 0.18 to 0.3% of Mn, 9.5 to 12.0% of Cr, 4 to 4.8% of W, 0.55 to 2.2% of Mo, 0.5 to 2.2% of V, 0.05 to 0.2% of Ni, 0.25 to 4.0% of Co, 0.7 to 2% of Nb, no more than 0.01% of S and no more than 0.01% of P, with the balance being Fe. The novel high-speed steel provided by the invention has sufficient toughness and wear resistance, is applicable to preparation of a variety of cold-punching moulds, cutting elements and cutters and is low in production cost.

Description

technical field [0001] The invention relates to a novel high-speed alloy steel. 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. Chinese invention patent (notification number is CN1014081) discloses low-alloy high-performance high-speed steel, which is characterized in that the specific chemical composition of the steel is (weight %) C0.85% ~ 1.05%, W3.0% ~ 5.0%, Mo2 .0%~3.5%, ...

Claims

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Application Information

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IPC IPC(8): C22C38/52
Inventor 赵伟
Owner 重庆展申机械厂
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