Hot rolled technique CCS grade D hull shipbuilding plate China origin

Normalizing is a heat treatment that improves the toughness of steel. After the steel components are heated to 30-50°C above the Ac3 temperature, they are kept for a period of time and then air cooled. The main feature is that the cooling rate is faster than annealing but lower than quenching. During normalizing, the crystal grains of the steel CCS grade D hull shipbuilding plate can be refined in a slightly faster cooling. Not only can satisfactory strength be obtained, but also the toughness (AKV value) can be significantly improved and reduced The tendency of the component to crack.

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Both the cross rolling method and the extrusion method must first heat the tube blank or ingot, and the steel tube produced is called hot rolling tube. Steel pipes produced by hot working can sometimes be cold worked as required. There are two methods of cold working: one is cold drawing, that is, drawing the CCS grade D hull shipbuilding plate steel pipe through the drawing die to make the steel pipe gradually thin and elongate; the other is cold rolling, which is the method of applying the hot rolling mill invented by the menesmann brothers to cold working. The cold working of CCS grade D hull shipbuilding plate seamless steel pipe can improve the size accuracy and finish of steel pipe, and improve the mechanical properties of materials.

CCS Grade B hot rolled steel is a ordinary strength marine steel plate. Our plates and sheets thickness are supplied up to 150mm. We have stock of CCS grade D hull shipbuilding plate, CCS Grade B hot rolled steel: 5.5*2790*10680, 27*1700*4350, 18*2000*10000, 9*2310*7060, 27*1700*4350, 45*2200*10000, 12*2000*10000, 16*2000*10000, 50*1770*7730, 14*1800*10000, 14*2000*10000, 11*1650*9000, 75*1050*9140, 40*2200*10000, 18*2000*9820, 14*2000*10000, 30*1500*6000, 75*1430*9140, 40*2000*8000, 80*1800*7000.