| 2013 №04 (10) | 2013 №04 (12) |
The Paton Welding Journal, 2013, #4, 56-60 pages
CORROSION RESISTANCE OF WELDED JOINTS OF SHIP HULL MATERIALS
E.V. KOLOMIJTSEV
Company «Iliich MMK», Mariupol, Ukraine
Abstract
Experience of operation of sea ferries is indicative of nonuniform general corrosion of hulls in the area of welded joints. The objective of this work was investigation of corrosion resistance of ship hull steels and their welded joints for the conditions of operation of «Sakhalin» series ferries of the second generation. Investigation procedure envisaged assessment of corrosion characteristics of ship hull materials under diverse conditions: determination of stationary electrode potentials and rate of general corrosion of low-alloyed hull steels, investigation of corrosion resistance of welded joints of these steels in rapid sea water. Obtained results allow recommending the following steels as base metal for hulls of «Sakhalin» series ferries of the second generation: for ice belt Е steels of 15GB and 10GNB grades, for outer shell of hull underwater part, inner bottom and partitions Е steels of A27 and D32 grades to TU-14-1-4264-87. Welding of steels 15GB, 10GNB and A27 should be performed both by nickel-containing and nickel-free consumables. Steel D32 can be welded by nickel-free consumables. 10 Ref., 6 Tables, 1 Figure.
Keywords: corrosion resistance, hull steels, welded joints, electrode potentials, sea water, testing duration
Received: 15.10.12
Published: 28.04.13
References
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