Transcription of Gear Hardness Technology
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Gear Hardness Technology
Gear TechnicallGro1up,SanDiego. CAIntroduction:In avery general sense, increasingthehardnessof asteel gear increases the strength of the ,foreach process thereis backgroundinformationon each of the processes covered. Tneach section discussed. Typical processes are presented alongwith commentson variableswhich affect theresult. By reviewing the capabilities and processes,it is possibletodetermine the limits to each this article several Hardness scalesare mentioned. The abbreviationsfor these scalesare as follows:BHN -Brinell Hardness numberKHN - Knoop Hardness numberHRC - Rockwell "C" scaleHV - Vickers Hardness numberPreliminary Heat Treatment ProcessesThere are several heat treatmentsperformedduring the manufacnsriugprocess which are in-tended to condition the metal for these are essential processes they willbedescribed isa process in is heated and then slowly cooled in the furnaceto 600 F (316 C).
between AfSI 4140, a leanalloy steel withpoor hardenability, and AI;S~4340. a rich alloy steel. In order to compare the hardenability of a material. end quench (Jominy) values are widely used as an indicator of a steel's hardenability, Since the quench is so critical to the resulting microstructure, it is necessary to verify the results with an ...
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