采用KONTC00L工艺(一种将控制轧制和加速冷却结合起来的新方法)研制出屈服强度36公斤力/毫米~2的低碳当量船体结构钢板。本工艺的形变热处理作用可以减少钢板的碳当量,并改善基体金属的韧性。KONTCOOL钢板可在不预热的情况下焊接,即使在500千焦耳/厘米这样的大线能量下焊接,焊接接头热影响区仍有令人满意的韧性。 A low-carbon equivalent hull structural steel plate with a yield strength of 36 kgf / mm2 was developed using the KONTC00L process, a new method of combining controlled rolling and accelerated cooling. The process of deformation heat treatment can reduce the carbon equivalent of steel, and improve the toughness of the base metal. KONTCOOL steel plates can be welded without preheating, and the HAZ of the welded joints is still satisfactorily tough, even at large wire energies of 500 kJ / cm.