S355J2G3钢疏松缺陷控制

Porosity Control of S355J2G3 Steel

S355J2G3钢锻件低倍质量要求很严,通过提高钢水纯净度,改进绝热板质量,控制过热度、注速,以及锻造加热温度及保温时间等措施,大幅度降低了疏松缺陷的发生。

For S355J2G3 steel, requirements for the macrostructure is very strict. By means of increasing the purity degree of mohen steel, improving heat-insulating plate quality, controlling overheat degree, pouring speed, heat temperature and hold time for forging etc., the porosity is reduced greatly.