Abstract
The work reports the failure investigations of HSS M35 grade steel that is used as a punch tool during cold forging process. The test samples were prepared from the heat-treated tool material and studied for composition, hardness, retained austenite, and microstructure. The punch tool operates at 800 MT during cold forging. It had produced 800 nos. of forged components before its failure. It is observed from the results that composition, hardness, and microstructure are conforming to the standard HSS M35 grade tool steel. The retained austenite (RA) percentage of the tool is within the acceptable limits. Fractographic studies were conducted on the failed sample using scanning electron microscope (SEM) to examine the fractured features. The cause of failure has been arrived at based on the fractographic analysis as well as macro-visual inspection of the fixture that is employed to clamp the punch tool. It is observed that, at the inner portion of the fixture, the presence of small pits and rubbing marks/ridges has caused stress concentration zone, leading to breakage/failure.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Gupta HN, Gupta KC, Mittal A (2009) Book on manufacturing processes, 2nd edn. New Age International Publisher
Pandey PM. Metal forming process. http://paniit.iitd.ac.in/pmpandey
Ngaile G et al (ed) (2005) Cold and hot forging, fundamentals and applications. ASM International, Materials Park, OH, USA
Raghavan V (2010) Physical metallurgy; principles and practice. PHI Learning (P) Ltd., New Delhi, pp 153–158
Randedius M (2008) Influence of microstructure on fatigue and ductility properties of tool steel. Department of Materials Science, Royal Institute of Technology, Sweden
Failure Analysis and Prevention, ASM Handbook, vol 11. ASM International, Materials Park, OH, USA, 2002
Acknowledgements
The authors would like to thank the management of Sambhram Institute of Technology, Essae Digitronics Pvt. Ltd., and Central Power Research Institute for having accorded permissions to present the paper.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Desai, S. et al. (2018). Failure Analysis of HSS Punch Tool: A Case Study. In: Seetharamu, S., Rao, K., Khare, R. (eds) Proceedings of Fatigue, Durability and Fracture Mechanics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-6002-1_8
Download citation
DOI: https://doi.org/10.1007/978-981-10-6002-1_8
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-6001-4
Online ISBN: 978-981-10-6002-1
eBook Packages: EngineeringEngineering (R0)