22FTM14. Investigations on the Tooth Root Bending Strength of Larger-Sized Induction Hardened Gears

ABSTRACT

Especially for larger-sized gears surface hardening is an economical and technological alternative to case hardening. Due to the necessary high case hardening depths required for larger case hardened gears and due to technological boundaries (e.g., heat treatment furnace size and heat treatment duration) typical surface hardening processes such as flame or induction hardening can exhibit their benefits for these parts. In the framework of this paper, the influence of induction hardening on the tooth root bending strength of larger-sized gears is investigated. Therefore, different variants of larger gears which were induction hardened gap-by-gap are compared. In order to gain a deep understanding, a systematical variation of the surface hardening depth, gear size (m_n = 14 mm and 20 mm), and surface condition was carried out.

Authors: Holger Cermak, Thomas Tobie, Karsten Stahl

ISBN: 978-1-64353-134-2