For DNV AH32 steel plate, not only is it required to have sufficient strength and toughness (including a good toughness value at a certain low temperature), but also when processed in a shipyard, DNV AH32 steel plate has good process performance, welding performance and certain corrosion resistance, the performance of these properties depends not only on the chemical composition of DNV AH32 steel plate, but more importantly, on a series of process measures taken by the steel plant from smelting to rolling.
In the smelting of DNV AH32 steel plate, the steel plant strictly controls the sulfur and phosphorus content of the molten iron used in steelmaking. In the later refining outside the furnace, vacuum degassing and argon blowing are used to stir to remove more impurities in the molten steel. Ensure the uniformity of molten steel temperature and composition, and improve the purity of molten steel.
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