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The maximum thickness of DNV FH32 marine steel plate

The maximum allowable thickness of F32 ship plate in DNV specification is 150mm, and the highest quality grade is F (-60°C). There is still a certain distance from the maximum thickness and highest grade of 32 kg ship plate in DNV specification.

From the perspective of meeting the market demand for large-thickness, high-strength and toughness ship plates, realizing variety benefits, and improving the overall competitiveness of the enterprise, BBN started with the research and development of large-thickness DNV FH32 marine steel plate, and began to develop large-thickness and high-quality ship plates Trial production and certification work. At present, the development of 110 mm thick DNV FH32 marine steel plate has been successfully completed, and it is planned to further develop the research and development of ship plate with higher quality and greater thickness.

According to the development direction and actual situation of DNV ship plate steel, the trial production goals and ideas of high toughness DNV FH32 marine steel plate are determined:
(1) Large thickness (>100 mm);
(2) Low cost (reduce the amount of precious alloy);
(3) Good strength and toughness matching;
(4) Excellent solderability

In order to achieve the above goals, the design ideas must be clarified: firstly, a reasonable component design is required, and secondly, an appropriate production process must be matched with it. Composition design is the foundation, reasonable composition design and good internal quality provide guarantee for the development of technological level; production process is the means, suitable production process can give full play to the potential of alloying elements and meet the technical requirements of DNV FH32 marine steel plate.