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Kompensation von Rundheitsabweichungen durch gezielte Wärmebehandlung von Wälzlagerringen
Author(s) -
Lütjens J.,
Surm H.,
Hunkel M.,
Gafsi H.,
Renken V.,
Schüttenberg S.
Publication year - 2012
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201100887
Subject(s) - quenching (fluorescence) , nozzle , roundness (object) , materials science , residual stress , composite material , compensation (psychology) , distortion (music) , bearing (navigation) , mechanical engineering , optics , engineering , physics , fluorescence , psychology , amplifier , optoelectronics , cmos , astronomy , psychoanalysis
The compensation of distortion of 100Cr6 (SAE 52100) bearing rings can be achieved within each of the production chain steps turning, austenitisation, and quenching. This work evaluates the compensation potential during heat treatment. For this purpose, rings are austenitised in a bottom‐loading furnace with six individually controlled heating elements. Temperature distributions in the rings during heating and soaking are used to influence the local solute carbon content. After austenitisation, the rings are quenched in a gas nozzle field with 13 individually controlled quenching zones, one on the inner surface and 12 on the outer surface of the ring. The roundness deviation just before quenching is measured using tactile sensors. The heat treated parts are examined with regard to distortion but also to the requirements of hardness, microstructure, and residual stresses. Limits of roundness deviation compensation in different Fourier orders are evaluated.