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1992
Conference Paper
Titel
Härtezonenüberwachung an Planetenrandbolzen
Alternative
Hardness control on planet wheel pins
Abstract
Pins of planetary wheels are inductive hardended in the middle part whereas two millimeters of each end must remain in a non hardened soft microstructure state. Because 180 pins/min are produced only automatic testing system can be used to assure a 100% production control. The Barkhausen noise amplitude which is snesitive to annealed and hardened microstructure of the steel grade 100 Cr 6 is used. The probe system consists of four air coils and a Hall-probe. By evaluating the Barkhausen noise amplitudes a nondestructive in time hardness measurement can be performed.
Language
German