
In the second step of hot rolling process, different finished mills are used to roll billets or continuous casting billets into finished steel of proper shape and size. This DH40 hull structure steel production process is called finished product production, which is generally divided into two stages of rough rolling and finish rolling. In the roughing stage, a large amount of reduction (reduction per pass) is adopted to reduce the number of passes and improve the output; after roughing, the finishing stage is entered, and the finishing is carried out with a small amount of reduction to achieve a good surface and accurate DH40 hull structure steel size.
BBNsteel DH40 hull structure steel medium plate product discount: 17.5*2850*8450, 18.5*1940*12100, 18*2770*4000, 19.5*2980*12050, 20*3000*8570, 19.5*1970*4000, 18.5*1640*8450, 19.5*1490*8500, 19*2580*4700, 20*3200*9000, 20*1600*7740, 18.5*1850*14050, 19.5*1910*6300, 21*1630*6000, 22*1300*10000, 19*2640*7810, 21*2650*7500, 21*1920*8220, 22*1380*7650, 21*1920*9270, 20.5*1590*6000, 21*2980*6460.
Sulfur is a very harmful element in DH40 hull structure steel steel. The presence of sulfur will increase the hot brittleness of steel, reduce the various mechanical properties of DH40 hull structure steel steel, and reduce the weldability, impact toughness, fatigue resistance and corrosion resistance of steel.
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