Radium-controlled hardening of bearing rings in a quenching press
- Stiftung Institut fuer Werkstofftechnik, Bremen (Germany)
This paper deals with the development of an {open_quotes}intelligent{close_quotes} quenching press for bearing rings. In contrast to a conventional press the diameters of the rings were measured during the quenching process. In a first step of the project radius sensors have been developed and were implemented into a computer controlled quenching press. A data acquisition system records the average inner diameter of rings continuously during the whole quenching process and compares these values with control points. Resulting differences between measured radii and desired values are corrected by radius-controlled straightening operations. The quality of this concept was verified by experiments. The rings investigated were made of SAE 52100 in two sizes with two different desired values for the inner diameter (138.5 mm and 185 mm). The varying parameter was the inner start diameter with deviations from the desired value, up to 1.4 mm. The investigations showed that this new concept results in very good ring-shapes and only small deviations from the desired value of inner diameter after quenching were observed. Independent from the start deviation the authors received final deviations of maximum {+-} 0.03 mm.
- OSTI ID:
- 484282
- Report Number(s):
- CONF-961140-; TRN: 97:000168-0044
- Resource Relation:
- Conference: 2. international conference on quenching and the control of distortion, Cleveland, OH (United States), 4-7 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of 2nd International conference on quenching and the control of distortion; Totten, G.E.; Howes, M.A.H.; Sjoestrom, S.J.; Funatani, Kiyoshi [eds.]; PB: 652 p.
- Country of Publication:
- United States
- Language:
- English
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