Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of high-strength spring steel wire

A spring steel wire and high-strength technology, which is applied in the field of spring steel wire production, can solve the problems of excessive residual austenite in the core, affecting the fatigue life of the spring, and inability to fully harden the material, so as to eliminate the existence of residual austenite and improve Strength and hardness, the effect of reducing surface oxidation

Active Publication Date: 2020-06-09
泰州荣鼎弹簧钢线有限公司
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing process has several disadvantages: 1. The raw material is pickled to remove iron scale, the material has the risk of hydrogen embrittlement and will cause serious environmental pollution; 2. The material has not been tested by surface flaw detection, which will affect the fatigue life of the spring made of the material; 3. Oil quenching is used for quenching, which cannot fully harden the material, resulting in more residual austenite in the core, and cannot obtain the high strength and high plasticity required by new materials

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
  • Preparation method of high-strength spring steel wire
  • Preparation method of high-strength spring steel wire
  • Preparation method of high-strength spring steel wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] A kind of preparation method of high-strength spring steel wire of the present invention is characterized in that: comprises the following steps:

[0028] 1) Drawing: After inspecting the steel wire raw materials, mechanical shot blasting is used for drawing with a wire drawing die. The length of the sizing belt of the wire drawing die is 2.5mm and the out-of-roundness of the drawn semi-finished product is ≤0.03mm;

[0029] 2) Induction heating: The steel wire is preheated to above 750°C through a 200KW / 7KHz intermediate frequency power supply, and the induction coil uses 4 coils with a length of 0.55m as the heating device; the steel wire is heated to 860°C~900°C through a high frequency power supply In the high-frequency power supply, 160KW / 50KHz power supply is used for front heating and 100KW / 100KHz power s...

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
lengthaaaaaaaaaa
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a high-strength spring steel wire. The method comprises the steps of drawing, induction heating, steam quenching, water quenching, induction heating tempering, eddy current inspection, finished product manufacturing and the like. The method has the advantages that the steam and water base quenching liquid combined cooling technology is adopted, and the induction heating technology is adopted.

Description

technical field [0001] The invention relates to the field of spring steel wire production, in particular to a preparation method of high-strength spring steel wire. Background technique [0002] Spring steel wire for automobiles is a high-tech, high-value-added downstream deep-processing product of wire rods. It is mainly used to manufacture shock-absorbing coil springs for automobiles and motorcycles, and has high market, technology and brand synergy value. As the automobile industry continues to develop in the direction of lightweight and high strength, the performance requirements for automobile springs are also increasing. At present, springs in the automotive field are gradually changing from high-strength grades (tensile strength σb1950MPa to 2050MPa, reduction of area ψ≥ 40%, surface defect depth ≤ 0.07mm) new materials to replace the existing 1750MPa ~ 1850MPa grade products. [0003] The existing production process of spring steel wire is: raw material inspection-p...

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 Applications(China)
IPC IPC(8): C21D9/02C21D8/06B21C1/02C21D1/18C21D1/42C21D1/60C21D1/613
CPCB21C1/02C21D1/18C21D1/42C21D1/60C21D1/613C21D8/06C21D9/02Y02P10/25
Inventor 黄玮颉杨振涛
Owner 泰州荣鼎弹簧钢线有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com