동력기계공학회지 (Journal of Power System Engineering)
- 제10권4호
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- Pages.111-118
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- 2006
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- 2713-8429(pISSN)
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- 2713-8437(eISSN)
선체용 압연 강판의 습식 수중 아크 용접부의 부식특성에 관한 연구
A Study on the Corrosion Properties of Underwater Wet Arc Welds using the SM 41
- 발행 : 2006.11.30
초록
Underwater wet arc welds were experimentally performed on 11mm thick KR-RA steel plate using six different types of flux coated electrodes of 4.0mm diameter, KSKR, KSKT, USBL, JPUW, UWEA and UWEB. From analysis of bead appearance, detachability of weld slag, spatter occurrence and arc stability, JPUW gives the best result, and UWEB is superior to KSKR and KSKT. By experimental result of hardness distribution on the weld bonds, UWEB weld has the narrowest bond structure which is probable condition to get the best mechanical properties of weld. UWEB and JPUW welds have more even hardness distribution across weld deposit and base metal. Upon polarization test to measure the respondency of corrosion, the electrode of UWEB shows the most excellent degree due to the low open circuit potential difference.