Steering arm shaft induction heating tempering technology

A technology of induction heating and technology, applied in heat treatment furnaces, heat treatment equipment, heat treatment process control and other directions, can solve problems such as thread breakage, quenching cracks, delayed cracks, etc., and achieve the effects of high production efficiency, simple structure and short process time.

Inactive Publication Date: 2009-11-04
CHINA FIRST AUTOMOBILE
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carburizing process will cause quenching cracks and delayed cracks at the thread and rounded corners, resulting in fracture at the thread during use

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
  • Steering arm shaft induction heating tempering technology
  • Steering arm shaft induction heating tempering technology
  • Steering arm shaft induction heating tempering technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is further described: a kind of steering arm shaft induction heating tempering technology, it is characterized in that: its technological process is as follows: (A) the contact plate 1 of inductor is fastened on the quenching transformer of quenching lathe together; under the condition that the cooling water and quenching water channel are guaranteed to be unobstructed, put the threaded end to be tempered upwards and clamp it between the upper and lower centers of the quenching machine tool; (B) press the start button, the workpiece starts to rotate, and the sensor quickly Descend to the position where the part needs to be heated and start heating. At this time, the alternating current passes through the two plates of the quenching transformer and the inductor to form a circulating current. The frequency of the induction heating power supply is 8-35kHz, and a magnetic field is generated near the effecti...

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

The invention relates to steering arm shaft induction heating tempering technology. The technology is characterized in that a screw end to be tempered is upward placed between upper tip and lower tip of a quenching machine to be clamped tightly; a start button is pressed, and the work piece starts to rotate and to be heated; in the whole process of heating, an axial protective spray case constantly sprays water, and water spraying is stopped when delay time is up; rotation is stopped, a sensor rises to the original position; the component is fetched to complete tempering. The technology fulfils the induction heating tempering quality and application performance of the component; the sensor has simple structure, short process time, high production efficiency, energy conservation and low process cost; the tempering temperature on a C point round angle can achieve the process requirement with hardness being reduced below 45HRC and other positions being over 20HRC, by adopting an intermittent heating mode through the effect of heat conduction.

Description

Technical field: [0001] The invention relates to a steering arm shaft induction heating tempering technology. Background technique: [0002] The steering arm shaft is an important part of the steering system of a commercial vehicle. It is used to transmit the steering torque. According to its working conditions and service conditions, carburizing treatment is required to solve the problem of pitting or broken teeth on the tooth surface. The carburizing process will cause quenching cracks and delayed cracks at the thread and rounded corners, resulting in fracture at the thread during use. In the manufacturing process, it is required to carry out tempering treatment at the tail of the thread in time to eliminate delayed cracks and ensure the quality of parts. [0003] Induction tempering technical requirements [0004] Material: 27NiCrMo [0005] Pre-heat treatment status: carburizing treatment greater than 58HRC [0006] Range of tempering zone: Excessive rounded corners ...

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): C21D1/42C21D1/18C21D11/00C21D9/28
CPCY02P10/25
Inventor 姜波崔凯王宏李航宇
Owner CHINA FIRST AUTOMOBILE
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