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Title |
An Evaluation of Slip Coefficient in High Strength Bolt Joint using Zn/Al Metal Spray Corrosion Resistance Method
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Authors |
김태수 ; 이한승 ; 태성호 ; 안현진 ; 오상훈 |
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Keywords |
Zn/Al 금속용사 ; 방식공법 ; 표면 거칠기 ; 미끄럼 계수 ; Zn/Al metal spray ; Corrosion resistance method ; Surface roughness ; Slip coefficient |
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Abstract |
In high strength bolted joints, the corrosion of base material causes the reduction of slip resistance of the joints. In this study, tensile tests on slip-critical joints utilizing Zn/Al metal spraying corrosion resistance method were carried out in order to prevent the corrosion and meet the required mechanical characteristics of joints. In addition, slip coefficient and surface roughness were calculated. The key parameters were surface finishing condition and thickness of coating with the identical geometry in all specimens. From the results, it is found that the slip coefficient of the joints with coated finish after sand blast treatment as well as those of non-coated joints with only sand blast treatment were similar or superior to 0.45, which is a specification criteria of slip coefficient in friction-typed joints.
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