Can-Eng Furnaces International Ltd. announced the successful start-up of two rotary screw hearth bar quench and temper furnace lines. The first project – installed in Detroit, Mich. – processes steel bars in the range of 1 to 12 inches x 25 feet long at a maximum production rate of 25,000 pounds/hour. Each plant layout is a compact U-shape design that utilizes regenerative burner technology on the rotary screw hearth hardening furnace discharging a single bar at a time into the water spray quench system, followed by rotary screw hearth tempering.
The second project – installed in the greater Chicago metro area – processes small-diameter bar in the .750- to 4.00-inch range x 25-foot lengths at a maximum production rate of 13,500 pounds/hour. Both systems are capable of producing commercially straight bars without the need for post-heat-treatment straightening and employ Level-II automation systems (SCADA). They both came complete with fully automated material-handling, debundling and loading systems. The contracts were executed for different customers and came on stream in the third quarter of 2012 and first quarter of 2013, respectively.