日本钢管公司(NKK)最近开发出具有高强度和良好焊接性能的高张力厚钢板,可用于建造大型集装箱船。集装箱船的日趋大型化,对船体钢板的厚度和强度提出了越来越高的要求。厚钢板在焊接时,需要大量的热量,但是热量过高又反过来会对钢板的组织造成影响,损害其强度。为此,日 NKK recently developed a high-tensile thick steel plate with high strength and good weldability that can be used to build large container ships. The ever-increasing size of container ships has imposed increasingly higher requirements on the thickness and strength of hull steel plates. When the thick steel plate is welded, a large amount of heat is required, but too high heat will adversely affect the structure of the steel plate and impair its strength. For this, the day