| 摘要 |
PROBLEM TO BE SOLVED: To prevent the initial peeling of a fixed ring in a roll bearing used under the conditions of high vibration, a high load and high temperature and to remarkably prolong the life of the bearing. SOLUTION: An outer ring as a fixed ring is formed into a prescribed shape, e.g. by SUJ2. By quenching and tempering, the content of solid solution carbon in the matrix is controlled to 0.10 to 0.40 weight%. The content of solid solution carbon in the matrix [C]M can be expressed by the following formula: [C]M=(100×[C]t-[θ]×[C]θ)/(100-[θ]). In this formula, [C]t denotes the carbon content (weight%) in the steel material to be used, [θ] denotes the content (weight%) of cementite contained in the fixed ring after quenching and tempering, and [C]θdenotes the carbon content (weight%) in cementite.
|
