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A Study on Characteristics of Repair Welding for Cast Iron Part of Diesel Engine for Ship  

Kim Jin-Gyeong (Korea Institute Maritime and Fisheries Technology)
Kang Myung-Shin (Graduate Shoot, Korea Maritime University)
Kim Young-Sik (Korea Maritime University)
Publication Information
Journal of Ocean Engineering and Technology / v.20, no.2, 2006 , pp. 41-45 More about this Journal
Abstract
Arc welding is sometimes used to repair damaged cast iron parts in diesel engine for driving n ship. In this case cold arc welding is good for saving the time and results in good repairing. But if some difference in hardness on welding zones made with AWS E Ni-CI and NiFe-CI happen, repaired parts would be cracked in a short. In order to overcome this default, the study is performed on varying preheating temperature of welding parts, selecting welding rod and welding work way. The result will be used on ship's working shop.
Keywords
Ni-electrode; NiFe-electrode; Heat affected zone(HAZ); Hardness; Blow hole;
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  • Reference
1 AWS Committee on Welding Iron Castings (1989). 'Guide for Welding Iron Castings,' AWS. Miami. pp 4-6
2 Nikuma and Soejima (1980). 'Point of Cast Steel and Cast iron welding,' Gendaiyosetsugijutsudaikeidaikei(No. 25), Sanpo publishing Co. Ltd. Tokyo, pp 108-109