Self-lubricating rolling bearing and preparation method therefor
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United States of America Patent
Stats
-
Aug 10, 2021
Grant Date -
Jun 27, 2019
app pub date -
Aug 31, 2017
filing date -
Aug 31, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A self-lubricating rolling bearing is provided. The chemical compositions in the inner rings and the outer rings of bearing are 3.4-3.7% C, 2.7-2.9% Si, 0.3-0.5% Mn, 0.3-0.5% Cr, ≤0.05% S, ≤0.05% P, 0.03-0.045% Residual Mg, and the remainder Fe. The total percent of the chemical compositions is 100%. The material for the inner and outer rings of the rolling bearing introduced in the invention is austempered ductile iron (ADI). In the microstructure of ADI, the diameter of the graphite nodules is less than 0.02 mm, the number of graphite spheres per square millimeter is more than 400, and the microstructure of the metal matrix in the ADI can be showed clearly only when it is observed on the microscope with a magnification more than 500. Eventually, the self-lubricating rolling bearings are made from the ADI.
First Claim
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International Classification(s)
- 2017 Application Filing Year
- F16C Class
- 1545 Applications Filed
- 1132 Patents Issued To-Date
- 73.27 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16C Class
- 0 % this patent is cited more than
- 4 Age
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