Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (48권3호 93-99)

The Joining Quality of High Strength Bolt, Nut and Washer Set (S10T & 10.9HRC) under the Surface Treatment Conditions

표면처리별 S10T, 10.9HRC 고장력 볼트 세트의 체결 품질 연구

최윤오;석한길;홍현선;
Choi, Youn-O;Suk, Han-Gil;Hong, Hyeon-Sun;

KPF(주) 품질보증부;강원대학교 재료금속공학과;성신여자대학교 청정융합과학과;
Quality Assurance Team, Korea Parts & Fasteners (KPF) Co., Ltd.;Department of Materials and Metallurgical Engineering, Kangwon National University;Department of Interdisciplinary ECO Science, Sungshin Women`s University;

DOI : 10.5695/JKISE.2015.48.3.93

Abstract

This test focuses on the correlations between joining axial force at non-room temperature and at room temperature according to the surface treatment (Geomet, Dacro, Green Kote, Armore Galv.). The quality characteristics 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 continually be enforced, and the fastening and storage in the field should be maintained at room temperature. Managing stabilization 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 axial force at room temperature conditions should be maintained below the maximum 4.47%. The decline rate of axial force should be maintained under 2.15% maximum, and the standard deviation of the room temperature condition should be maintained below 0.5.

Keywords

High tension bolt;Joining;Axile Force;Surface Treatment;