GEAR RIM AND GEARS PRODUCED THEREFROM

摘要

Disclosed herein is a multi-segmented fabricated gear rim and gear formed therefrom. Each gear rim segment (11, 12) in the gear is formed from a single unsegmented steel plate. The steel plate has an upper surface (16) from which gear teeth are cut and a lower surface (15) on which the gear sub-structure is welded. Relative to each other, the upper surface (16) of the steel plate possesses high hardenability and poor weldability and the lower surface (15) possesses low hardenability and good weldability. The steel plate is preferably formed using a decarburization process.