Steel Company Continuous Casting Process Controls

Birmingham, Alabama

This mini-mill produces commodity steel, primarily in the form of structural items such as I-beams, channels, and angles, from recycled scrap carbon steel. The plant was originally built before WW II and has undergone numerous ownership changes and facility upgrades in the years since. Major components of the plant include an NKK United DC arc furnace with 70-ton tap weight, a ladle metallurgy station, a 14-stand rolling mill, and a continuous billet caster, built by Demag and placed into service in 1991. It was this continuous caster that Revere was asked to upgrade in 1996.

The Casting Process

Molten steel flows from a ladle to a tundish vessel, and from there to four water-cooled oscillating molds. From the bottom of each mold, a red-hot strand of steel emerges vertically. Each strand has a rectangular cross section that ranges from 4 x 4 inches to 7 x 12 inches, depending on the mold used. Support rollers reorient the strands to the horizontal, and another set of rollers straighten them. Torches cut off billets to lengths varying from 8 to 25 feet, and the billets are conveyed to a cooling bed area before being weighed and stacked.

 

Cutting torches have flexible connections to allow each one to ride its freshly cast strand while cutting off a billet.

Billets of steel travel lengthwise from the cutting torches (at rear) past the operator's pulpit at left, through a weighing station, and to a lateral conveyor at the front.

 

Viewing the cutting torches from the operator's pulpit, with the control screen at left of the other system controls.

     

 



Home | About Us | Services | Products | Case Studies | News | Municipal | Pump Controls | Power Controls | OEM | Contact Us | Members | Privacy Policy

2240 Rocky Ridge Rd.; Birmingham, AL 35216
800.536.2525; 205.824.0004; fax 205.824.0439