37Mn5油井管坯钢冶炼工艺操作要点.doc

37Mn5油井管坯钢冶炼工艺操作要点执行标准：HGJX-06-003 工艺路线：EAF+LF+CCM一、化学成份：1、标准要求：C：0.33-0.41% Si:0.17-0.35% Mn:1.25-1.55% P0.025% S0.025%Ni0.25% Cr0.15% Cu0.20%ALs0.020% Ti:0.015-0.035% 2、内控要求：C：0.34-0.38% Si:0.20-0.25% Mn:1.30-1.35% P0.015% S0.010%Ni0.20% Cu0.20%ALs0.010-0.018% Ti:0.025-0.035% 3、目标值：C：0.36% Si:0.25% Mn:1.35% P0.012% S0.008% ALs0.015% Ti:0.025% 4、气体含量要求：020ppmm H2.5ppmm N70ppmm 二、冶炼特点：1、管坯用钢，要