摘要
为保证莱钢Q275D热轧H型钢极限规格的-20℃冲击功值满足GB/T 700-2006要求,采用Nb微合金化结合再结晶控轧工艺试制了极限规格H400mm×200mm×8mm×13mm的Q275D热轧H型钢。结果表明：试制产品的上屈服强度为360～368 MPa,抗拉强度为480～500 MPa,伸长率为32.5%～33.0%,平均冲击功为154～233J,各项性能指标满足标准要求。
In order to guarantee the impact value（-20 ℃）of Q275 D hot rolled Hshaped steel with limiting specification to satisfy the requirements of GB/T 700-2006,Q275 D with limiting specification H400 mm×200 mm×8 mm×13 mm was trialproduced by adopting niobium microalloying and recrystallization controlled rolling process.The results showed that the upper yield strength of the trial product was 360-368 MPa,the tensile strength was 480-500 MPa,the elongation was 32.5 %-33.0 %,the average of impact value was 154-233 J,Each performance index of the trial product met the requirements of GB/T 700-2006.
出处
《钢铁研究》
CAS
2015年第1期12-15,共4页
Research on Iron and Steel
关键词
热轧H型钢
再结晶控制轧制
NB微合金化
hot rolled H-shaped steel
recrystallization controlled rolling
niobium microalloying
