Publication detail

Simulation of Quenching of Ball Bearing Rings Made from 100Cr6 Steel

MORAVČÍK, I. BREZNIČAN, M.

English title

Simulation of Quenching of Ball Bearing Rings Made from 100Cr6 Steel

Type

Lecture

Language

en

Original abstract

Thermal regime simulation with varying hardening temterature of three modes of oil quenching of ball bearing rings made of 100Cr6 steel was caried out in Sysweld program, based on finite element analysis. 3D model was prepared acording to manufacturing documentations of rough machined external rings. Hardening temperatures used 830, 850 and 870 degree celzius. As result complete graphical description of temperature, phase composition and hardness depending on time of quenching has been obtained. The results were compared with experimental heat treatment caried out with the same parameters. Comparison showed slight differences in hardness after quenching. In range of hardening temperatures applied, the observed microstructure consists of undisolved secondary cementite the volume fraction of which is depending on a number of parameters like heating speed, hardening temperature, holding time etc. This parameters have direct impact on microstructure and hardness after quenching. Sysweld software which was originaly created for simulation of welding of usual hypoeutectoid steels, is unable to predict secoundary cementite dissolution kinetics and therefore is not well suited for hardness and microstructure predictions for hypereutectoid steels in general. Nevertheless the time-temperature predictions and mechanical stress analysis can be very usefull for precise technological adjustments in industrial applications to prevent cracking or excessive deformation.

Keywords in English

Quenching, heat treatment, ball bearing,

Released

2014-07-25

Book

Junior Euromat

BIBTEX


@misc{BUT108881,
  author="Igor {Moravčík} and Martin {Brezničan}",
  title="Simulation of Quenching of Ball Bearing Rings Made from 100Cr6 Steel",
  booktitle="Junior Euromat",
  year="2014",
  edition="1",
  url="http://webdb.dgm.de/dgm_lit/prg/FMPro?-db=w_review&-recID=32945&-format=prog_kurzfassung.htm&-lay=Standard&-find"
}