2018 - Sustainable Industrial Processing Summit & Exhibition
4-7 November 2018, Rio Othon Palace, Rio De Janeiro, Brazil
| Electron Beam Surface Hardening of AISI H13 Tool Steel Sandeep Thakare1; 1BHARAT FORGE LIMITED, pune, India; PAPER: 147/Composite/Regular (Oral) SCHEDULED: 12:35/Tue./Grego (50/3rd) ABSTRACT: AISI H13 is an excellent hot work tool steel commonly used for manufacturing dies. These dies are subjected to working conditions with continuous cyclic thermo-mechanical loading, which results into surface failure of dies. So in order to enhance the service life of the die, surface hardening by electron beam is proposed. In this paper, effect of electron beam scanning speed on the hardening case depth of an AISI H13 sample was studied. Microstructure of EB hardened layer has been characterized by optical microscope. The tribological performance of hardening was investigated by pin on disk wear testing. It is found that effective case depth increases with decrease in the scanning speed. References: [1] M. Newishy, Microstructure and mechanical properties of AISI H13 tool steel processed by laser surface melting. [2] J. Toshiki Hirogaki, In-situ heat treatment system for die steels using YAG laser with a machining center, Precision Engineering, 25, 212-217, 2001. [3] A.I. Katsamas, Surface hardening of low-alloy 15CrNi6 steel by CO2 laser beam. Surface and Coatings Technology 115, 249-255, 1999. [4] T.I. Khan, The effect on wear behaviour of H13 tool steel surfaces modified using a tungsten arc heat source Wear 244, 154-164, 2000. [5] John C. Bergeron, Failure Analysis of H13 Gear Blank Forging Dies, Department of Materials Science and Engineering, Michigan Technological University, May 22, 2004 [6] Tauqir A, Zaigham H, Hashmi FH, Khan AQ. J Mater Sci 1997;32:465. [7] Electron beam hardening , Katsuyuki Matsui, Shiroh Uchida, Takayuki Hirata, Masahiko Kumano Int. J. of Materials and Product Technology, 1990 Vol.5, No.3, pp.220-230 |
