표면처리별 S10T, 10.9HRC 고장력 볼트 세트의 체결 품질 연구

Abstract

Department of Interdisciplinary ECO Science, Sungshin Women's University, Seoul 142-732, Korea(Received May 12, 2015 ; revised June 15, 2015 ; accepted June 18, 2015)AbstractThis test focuses on the correlations between joining axial force at non-room temperature and at roomtemperature according to the surface treatment (Geomet, Dacro, Green Kote, Armore Galv.). The quality char-acteristics of the fastening axial force required by the KSB 2819 and EN14399-10 standards were discussed.Surface treatment was implemented to S10T and 10.9HRC sets of bolts under the same environmental factors.Development for the stabilization of the fastening axial force required by each standard should continuallybe enforced, and the fastening and storage in the field should be maintained at room temperature. Managingstabilization of torque enumerated data is required after application of surface treatment. It is concluded that,by conducting the test of applying surface treatment to effectively manage, each lot-specific rate of axialforce at room temperature conditions should be maintained below the maximum 4.47%. The decline rateof axial force should be maintained under 2.15% maximum, and the standard deviation of the room temperaturecondition should be maintained below 0.5.