Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of cyclic deformation heat treatment method of high-speed steel wire rod

A deformation heat treatment and high-speed steel technology, which is used in the fields of increasing the number and dispersion of carbide particles, improving the quality and mechanical properties of wire rods, and can solve the problems of uneven distribution, small number, and large carbide size, and achieve a large number of , small size and high quality of organization

Active Publication Date: 2021-06-01
SOUTHEAST UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The purpose of this invention is to provide a method for cyclic deformation heat treatment of high-speed steel wire, which can increase the number and dispersion of carbide particles, improve the quality and mechanical properties of wire rod, and effectively improve the carbide of high-speed steel wire rod produced by traditional methods. Organizational defects such as large size, small quantity, and uneven distribution

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The M42 high-speed steel wire rod is processed as follows:

[0026] (1) Heat the M42 high-speed steel wire to 760°C and keep it warm for 1h;

[0027] (2) Cold processing of M42 high-speed steel wire, the strain is 0.1;

[0028] (3) Heat the above-mentioned cold processed M42 wire rod to 400°C and keep it warm for 3h;

[0029] (4) heating the above-mentioned carbon segregation treated M42 high-speed steel wire rod to 850°C, holding it for 4h, and annealing in furnace;

[0030] (5) Continue cold working to the M42 high-speed steel wire rod of recrystallization annealing, and the strain amount is 0.15;

[0031] (6) Heat the above-mentioned cold processed M42 wire rod to 450°C and keep it warm for 2.5h;

[0032] (7) heating the above-mentioned carbon segregation-treated M42 high-speed steel wire rod to 860° C., holding it for 3 hours, and annealing in furnace;

[0033] (8) After the M42 wire is cooled to 500°C, it is air-cooled after it is released from the furnace.

Embodiment 2

[0035] The M42 high-speed steel wire rod is processed as follows:

[0036] (1) Heat the M42 high-speed steel wire to 820°C and keep it warm for 10 minutes;

[0037] (2) Cold processing of M42 high-speed steel wire with a strain of 0.3;

[0038] (3) Heat the above-mentioned cold-processed M42 wire rod to 700°C and keep it warm for 30 minutes;

[0039] (4) Heating the above-mentioned carbon segregation-treated M42 high-speed steel wire rod to 900°C, holding it for 1h, and annealing in furnace;

[0040] (5) Continue cold working to the M42 high-speed steel wire rod of recrystallization annealing, and the strain amount is 0.2;

[0041] (6) Heat the above-mentioned cold processed M42 wire rod to 550°C and keep it warm for 2h;

[0042] (7) heating the above-mentioned carbon segregation-treated M42 high-speed steel wire rod to 880° C., holding it for 2 hours, and annealing in furnace;

[0043] (8) After the M42 wire is cooled to 500°C, it is air-cooled after it is released from t...

Embodiment 3

[0045] The M42 high-speed steel wire rod is processed as follows:

[0046] (1) Heat the M42 high-speed steel wire to 780°C and keep it warm for 20 minutes;

[0047] (2) Cold processing of M42 high-speed steel wire rod, the strain amount is 0.2;

[0048] (3) Heat the above-mentioned cold processed M42 wire rod to 550°C and keep it warm for 2h;

[0049] (4) Heating the above-mentioned carbon segregation-treated M42 high-speed steel wire rod to 880° C., holding it for 2 hours, and annealing in a furnace;

[0050] (5) Continue cold working to the M42 high-speed steel wire rod of recrystallization annealing, and the strain amount is 0.3;

[0051] (6) Heat the above-mentioned cold processed M42 wire rod to 650°C and keep it warm for 1h;

[0052] (7) heating the above-mentioned carbon segregation treated M42 high-speed steel wire rod to 900°C, holding it for 1h, and annealing in furnace;

[0053] (8) Continue cold working to the M42 high-speed steel wire rod of recrystallization ...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a cyclic deformation heat treatment method for a high-speed steel wire rod, which can increase the dispersion of fine carbide particles, improve the microstructure quality, and improve the processing and use performance of the high-speed steel wire rod. The main feature of the invention is that cold deformation processing, carbon segregation treatment and recrystallization annealing are cyclically performed on the equiaxed high-speed steel wire rod. 0.1~0.3, then heated to 400~700℃ for 30min~3h for carbon segregation treatment, and then heated at 850~900℃ for 1~4h for recrystallization annealing; for every 0.05 increase in cold deformation processing strain, the carbon segregation treatment temperature The temperature is increased by 50-100°C, and the recrystallization annealing temperature is increased by 10-20°C; the number of cycles of cold deformation processing, carbon segregation treatment and recrystallization annealing is not less than 2 times. The high-speed steel wire rod produced by the method has the advantages of large number of fine carbide particles, high microstructure quality, and good processing performance and service performance.

Description

technical field [0001] The invention relates to a method for cyclic deformation heat treatment of a high-speed steel wire rod, in particular to a method for increasing the number and dispersion of carbide particles and improving the tissue quality and mechanical properties of the wire rod. Background technique [0002] Due to its high hardness, high wear resistance, good red hardness and other advantages, high-speed steel is widely used in the manufacture of various high-efficiency precision machining tools such as milling cutters, gear planers, turning tools, twist drills, bimetal saw blades, etc. It is a modern high-end An important basic material for the equipment manufacturing industry. Carbide particles are an important strengthening phase of high-speed steel, and their quantity, size, shape, and distribution have a great influence on the performance of high-speed steel. [0003] High-speed steel tools are made of high-speed steel rods and wires. The preparation proces...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C21D7/02C21D1/26C21D1/78C21D8/06C21D9/52C21D11/00
CPCC21D1/26C21D1/78C21D7/02C21D8/065C21D9/525C21D11/005C21D2211/004
Inventor 周雪峰郑志霞张伟超蒋建清
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com