Chromium steel series high speed steel and heat treatment technique 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 high manufacturing cost and low production cost, and achieve the effects of reducing production cost, increasing hardenability and high toughness

Inactive Publication Date: 2006-08-30
周向儒
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chromium steel series high speed steel and heat treatment technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]A new type of chromium steel high-speed steel, the high-speed steel includes: carbon C0.95%, silicon Si0.3%, manganese Mn0.3%, chromium Cr10%, tungsten W3.0%, molybdenum Mo1.0 %, Vanadium V1.0%, Nickel Ni0.2%, Cobalt Co0.3%, Niobium Nb1.2%, Titanium Ti0.3%, Rare Earth Elements 0.05%, Sulfur S≤0.015%, Phosphorus P≤0.02%, and the rest The amount 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...

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 W2.5%, molybdenum Mo0 .6%, Vanadium V0.4%, Nickel Ni0.1%, Cobalt Co0.2%, Niobium Nb0.8%, Titanium Ti0.3%, Rare Earth Elements 0.05%, Sulfur S≤0.015%, Phosphorus P≤0.02% , and the rest 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 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 temper...

Embodiment 3

[0055] A new type of chromium steel high-speed steel, the high-speed steel includes: carbon C1.0%, silicon Si0.4%, manganese Mn0.4%, chromium Cr10.5%, tungsten W3.5%, molybdenum Mo1 .5%, Vanadium V1.0%, Nickel Ni0.3%, Cobalt Co0.5%, 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.

[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 minutes...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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%, tungsten2.5-3.5%, molybdenum 0.6-1.2%, vanadium 0.4-2.0%, nickel 0.1-0.3%, cobalt 0.2-5.0%, niobium 0.8-1.2%, 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 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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C38/52C21D1/18C21D11/00
Inventor 周向儒赵春华廖德秀宋利秋
Owner 周向儒
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap