Development of Ultrasonic Technique for Surface Crack Detection of Semi-HSS and HSS Rolls

Palit Sagar, S and Murthy, G V S and Das, T K and Prakash, Amit (2011) Development of Ultrasonic Technique for Surface Crack Detection of Semi-HSS and HSS Rolls. Collaborative (CLP). CSIR -NML Jamshedpur, Jamshedpur. (Submitted)

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Abstract

The high speed steel (HSS) rolls have high hardness and good wear resistance at high temp. This type of roll is used in finishing applications for increased campaign times and better surface finish. As the hardness of HSS reaches 80/85 shore, it becomes very much crack-sensitive. Hence it is highly recommended to eliminate all kinds of surface cracks, whenever these rolls are reground, other-wise typical `cats'-tongue band type spalls may occur that lead to abnormal failure. Surface waves ultrasonic tech-nique has been used to detect the surface cracks and to establish the optimal grinding condition for obtaining correct surface contour required for the next rolling process.

Item Type:Project Reports (Collaborative (CLP))
Official URL/DOI:http://eprints.nmlindia.org/3831
Uncontrolled Keywords:'Cats'-tongue, Crack-sensitive
Divisions:Material Science and Technology
ID Code:3831
Deposited By:Sahu A K
Deposited On:29 Aug 2011 10:26
Last Modified:21 Nov 2011 17:29
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