Unlock instant, AI-driven research and patent intelligence for your innovation.

Fault detection method of roller body chamfering

A roll body and chamfering technology, which is applied in the analysis of solid and material magnetic variables using sonic/ultrasonic/infrasonic waves, can solve problems such as defect detection on the chamfered surface of the roll body, and achieve the effect of improving the accuracy of flaw detection.

Active Publication Date: 2008-05-21
BAOSTEEL ROLL SCI & TECH
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the manufacture of rolls, the defects on the roll body are all detected, and there is no report on the detection of defects on the chamfered surface of the roll body.

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
  • Fault detection method of roller body chamfering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] As shown in Figure 1, the surface wave probe used in the present invention is a 90° probe, and its detection frequency is 2MHz. The coupling agent used is engine oil. The smoothness of the chamfered surface of the roll body is δ6.3, that is, there should be no oil or water on the chamfered surface, and there should be no obvious processing defects, but it is allowed to leave machined and smooth car marks, and the innermost end of the chamfering is 5 to the outermost. The length L of the end 4 is 100 mm, and the value of the chamfer angle θ is 30°.

[0010] The flaw detection steps are as follows: ① Put the surface ultrasonic probe 1 connected to the ultrasonic flaw detector directly in contact with the roll body surface 2 through engine oil, the direction of the ultrasonic wave emitted by the surface ultrasonic probe 1 is toward the chamfered surface 3 of the roll body, and the surface ultrasonic probe 1 is away from the roll body. The distance H between the outermost ...

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 discloses a flaw detection method for roll body chamfering. 20~30mm; ②Start the machine, make the surface ultrasonic probe scan the chamfering surface of the roller body in a circumferential direction; Standard waves, according to whether there are other reflected echoes between these two standard waves, determine whether there is a defect. If a defect is detected on the chamfered surface, then the type of the defect is determined by the magnetic particle flaw detection method. The method of the present invention can detect various defects on the chamfer surface of the roll body that cannot be observed by naked eyes, thereby preventing the expansion of the defects on the chamfer surface in the subsequent processing such as quenching and causing unqualified products.

Description

technical field [0001] The invention relates to a roll flaw detection method, in particular to a roll body chamfer flaw detection method. Background technique [0002] The roll is one of the important parts of the steel rolling equipment. The roll is processed by the roll blank. The main process is: rough turning, quenching and tempering, quenching, cold treatment, tempering and finishing of the roll blank to obtain the finished roll. In the manufacturing process of roll blanks and rolls, some defects will inevitably occur inside and on the surface of the roll body. At present, the internal defects of the roll body can be detected by ultrasonic flaw detection method and X-ray method, and the surface defects can be detected by ultrasonic flaw detection method, magnetic particle flaw detection method, eddy current flaw detection method and coloring flaw detection method. The detection of internal defects of the roll body is generally carried out after rough turning, and the d...

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): G01N29/04G01N27/84
Inventor 李剑明倪鸣韩礼江
Owner BAOSTEEL ROLL SCI & TECH
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