The rolling state and temperature of ASME SA572 Grade 65/ SA572 Gr. 65 V-Nb HSLA steel plates

ASME SA572 Grade 65/ SA572 Gr. 65 HSLA steel plates are applied in bridges, buildings, electric power industry structure, etc. aspects of our life. As a leading ASME SA572 Grade 65/ SA572 Gr. 65 V-Nb HSLA steel plates supplier in China, BBN steel is willing to share more knowledge with you.

ASME SA572 Grade 65/ SA572 Gr. 65 V-Nb HSLA steel plates are usually delivered in hot rolling or controlled rolling state. In order to ensure good low temperature impact toughness of SA572 Gr. 65 steel, BBN steel adopts strict two stage control rolling process to produce SA572 Gr. 65 V-Nb HSLA steel plates.

The two stage control rolling process of ASME SA572 Grade 65/ SA572 Gr. 65 V-Nb HSLA steel plates includes rough rolling and finishing rolling. The rough rolling adopts high temperature fast rolling and large pressure reduction, the first two pass reduction >25mm, ensuring the rolling penetration, the repeated deformation of austenite grain, and to make the grain size refined. For finishing rolling, the rolling temperature <950 DEG C, reducing the effect of mixed crystal on the mechanical properties of ASME SA572 Gr. 65 steel plates. The finishing rolling temperature of ASME SA572 Grade 65/ SA572 Gr. 65 V-Nb HSLA steel plates less than 16mm is 830~860 DEG C, and that of ASME SA572 Gr. 65 steel plates within 16mm to 32mm is 840~870 DEG C.