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RISS 인기검색어
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- 저자 : 한효섭(Hyoseup Han) (검색결과 2 건)
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김상근(Sangkeun Kim),한효섭(Hyoseup Han),한종대(Jongdae Han) 한국트라이볼로지학회 2005 한국트라이볼로지학회 학술대회 Vol.2005 No.6
Polymer lubricant composed of porous structure resin retaining oil or grease provides oil lubrication, but it acts as solid. For synthesis of polymer lubricant, thermo plastics like polyethylene are normally used. Polymer lubricants are synthesized to be adjusted in composition from pure polymer to 60 percent content of oil. And then the internal space of bearing has been filled with polymer lubricant. Under severe operating conditions, bearings are usually damaged by grease deterioration, leakage and insufficient lubrication caused by insertion of water or foreign matters. In these conditions, polymer lubricating bearings which are packed with polymeric lubricant have been widely applied for satisfying maintenance cost and obtaining longer service life. In this work, two polymer lubricants optimized by SSRED (Six Sigma Robust Engineering Design) program using oil separation and OIT (oxidation induction time) values respectively. Then the performance of polymer lubricants for high temperature application was tested and evaluated. The optimized polymer lubricant by means of OIT value showed longer grease life than the optimized polymer lubricant by using oil separation.
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최적화 후의 깊은홈 볼 베어링용 그리이스의 특성과 수명연구
김상근(Sangkeun Kim),한효섭(Hyoseup Han),한종대(Jongdae Han) 한국트라이볼로지학회 2005 한국트라이볼로지학회 학술대회 Vol.2005 No.11
Rolling bearings are assorted one of the most important machine elements. High performance characteristics such as long life, low torque, small temperature rise, low noise, low wear and high corrosion resistance are required for rolling bearings. The grease life will effectively limit the bearing life. Therefore higher performance of rolling bearing greases is required to improve bearing lubrication. Large differences in the grease performance depending on the composition were observed. In this study, five optimum greases with different composition were selected using the powerful Robust Engineering Orthogonal Array and SSRED (Six Sigma Robust Engineering Design) program. Then the performance of these optimum greases was tested. Large differences in the grease performance depending on the composition were observed. A strong correlation was found between grease life and OIT value The life time of optimum grease using OIT value was longer than that of the optimum grease using dropping point.
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