1, shipbuilding steel
Construction of civil or military ships of iron and steel materials, are called shipbuilding steel. With steel plates,profiles, tubes, casting and forging. But the habit is shipbuilding steel refers only to ship shell plate, plate three categories of normal strength shipbuilding steel plate, high strength shipbuilding steel plate and the naval vesselshell.
Requirements for steel, shipbuilding technology 2
The hull form is complex, there are many types of single curve or a hyperboloid, to the cold, hot bending and straightening and other forming operation, the requirements for steel for shipbuilding process adaptability, also included in the welding and repair. The plasticity and toughness requirements sufficient to compensate the influence of work hardening and thermal cycling of various construction process of the operation of the material.The stem, the hull longitudinal bending stress, the largest part of the bottom and side prevent split boards and other important parts, crack resistance of high requirements, requirements under the condition of low temperatureand low delay a ductile brittle transition temperature and enough impact absorption work.
The corrosion resistance to seawater.
Steel demand 3, shipbuilding Steel demand 3, shipbuilding
Enter 90 age, the international shipping volume growth higher than the capacity increment, the new building andold ship ship market transactions, the first 5 years of the new ship trading up to 32000000 tonnage.
Our country only shipbuilding industry corporation system is building 6760000 tons, after 5 years can be recycled 350? 4000000 tons.
