Key smelting points to ensure the successful production of LR DH32 marine grade low alloy shipbuildi

BBN steel is the world's leading supplier of LR DH32 marine grade low alloy shipbuilding steel plate in China. The melting points of BBN steel LR DH32 shipbuilding steel plate are as follows:
(1) hot metal desulphurization.
(2) the final carbon of converter is controlled between 0.06%~0.10%.
(3) slag, ladle and synthetic slag.
(4) deoxidization alloying of ladle.
The content of acid soluble aluminum in steel before refining is 0.004% ~ 0.005%.
(5) The acid-soluble aluminium content in steel is stable between 0.02% and 0.04%, and the w[Ca]/w[A1] ratio of calcium production line is 0.1.
(6) ensure the stirring time of weak argon blowing, so as to promote the full floating of inclusions.
(7) full casting protection for continuous casting process.
Note: residue of LR DH32 marine grade low alloy shipbuilding steel plate: w[Cu] = 0.35%;
W[Cr]= 0.20%;
W (Ni) = 0.40%;
W (Mo) = 0.08%.

The above melting points of BBN steel has laid a solid foundation for high quality LR DH32 marine grade low alloy shipbuilding steel plates. This is one of the reasons why BBN LR DH32 steel plate is so popular in the world's shipbuilding industry.