Rolling process of ASME SA572 GR.50 high strength steel

The rolling process of ASME SA572 GR.50 high strength  steel generally consists of the following steps: raw material preparation - heating - rolling - heat correction - cooling - ultrasonic testing - finishing.

ASME SA572 GR.50 high strength  steel billet is sent from the continuous casting machine or the initial rolling mill to the billet depot. The  billet is removed by crane and stored in the warehouse.The SA572 GR.50 steel billet is hoisted by crane to the track and then transported to the heating furnace. The good SA572 GR.50 steel billet is transported to the vertical scale machine by the output rail, and the first oxide skin is removed.Then the billet goes into the first and second rough rolling machine, and rolling back and forth three or five times, and then enter the third and fourth rough rolling machine for continuous rolling.

During rolling process, we use high-pressure water rinse oxide.  General ASME SA572 Gr.50 high strength  steel slabs thickness are rolled to 20 ~ 40mm. Follow the fourth roughing mill, SA572 Gr.50 high strength  steel plates needs thickness, width and temperature measurement. Thereafter, SA572 Gr.50 structure high strength  steel slabs are taken to the finishing train by the roller table, the head or tail is cut by the shearing. Then SA572 Gr.50 high strength  steel gets continuous rolling by a four-roll finishing mill. After continuous rolling, SA572 Gr.50 high strength  steel strip is laminar cooled and rolled into hot rolled SA572 Gr.50 high strength  steel coil.    The rolling process is completed.

The whole ASME SA572 Gr.50 high strength  steel rolling process has been completely automated. In other words, the whole SA572 Gr.50 high strength  steel production process is controlled by process control computer (SCC) and three automatic digital direct control computer (DDC), from feeding roller-heating furnace - rolling mill - laminar flow cooling - coiler reeling - to the fork point of the coil conveyor chain.