Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
권호 표지

Characterization of Dacrotized Bolts

다크로 방식 처리된 볼트의 특성 평가

  • Yang, Chi-Hoon (Center for Product Reliability, Daewoo Heavy Industries & Machinery LTD.) ;
  • Ko, Jeong (Center for Product Reliability, Daewoo Heavy Industries & Machinery LTD.) ;
  • Kim, Dae-Yong (Center for Product Reliability, Daewoo Heavy Industries & Machinery LTD.)
  • 양치훈 (대우종합기계(주) 신뢰성평가센터) ;
  • 고정 (대우종합기계(주) 신뢰성평가센터) ;
  • 김대용 (대우종합기계(주) 신뢰성평가센터)
  • Published : 2001.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

To enhance the corrosion resistance of a bolt by surface treatment, dacrotization was considered as a substitute for phosphate coating which is widely used for general applications. In this study, comparisons were made among 5 different kinds of surface treatments including dacrotization and phosphate coating with respect to corrosion resistance, adhesion property with painting, and preload when tightened. The result shows that the dacrotized and surface-stabilized bolt is much superior in every aspects studied herein to others. An excellent corrosion resistance and a fairly good adhesion property with painting were achieved in the dacrotized and surface-stabilized bolt. When tightened at the same torque, the amount of preload and its deviation of dacrotized and surface-stabilized bolt were comparable with those of phosphate coated bolt.

Keywords