Thin section casting program: Volume 3, Vertical TSC (thin-section casting) approach: Final report

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5892575

A prototype vertical twin belt caster was designed, constructed and tested at Bethlehem Steel Corporation's Homer Research Laboratory for the development of a thin section casting process. In the prototype caster the moving mold was aligned vertically and each of the two endless steel belts was tensioned around an upper and a lower large pulley by means of a third smaller pulley. The mold consisted of a long parallel lower section and a shorter V-shaped top section into which liquid steel was fed from a tundish via a submerged refractory nozzle. Mold length, defined as the distance from the meniscus in the V-mouth to the tangent point of the lower pulleys, was about eleven feet. The length of the V-mouth was 27 in. The belts were continuously supported between the upper and lower pulleys by a unique back-up system. Downstream support consisted of two pairs of foot rolls and a vertical water-cooled steel structure that would permit a cast length of about nineteen feet. A chain driven bar was used to start a cast and support the slab. The aim was to cast 1 in. /times/ 17 in. sections at 250 in./min. The details of the prototype vertical caster, except the end walls, are given. The water modeling studies conducted at USSteel to establish tundish nozzle port sizes, inclinations and depth of submergence below the meniscus for optimum flow pattern in the V-mouth are included. The design analyses of the copper end walls and the 10-ton liquid steel trials conducted with the refractory end walls are presented. The fourteen liquid steel trials conducted with the vertical caster and the concluding remarks on vertical feeding system development are discussed.

• Research Organization: USX Corp., Monroeville, PA (USA). USS Technical Center; Bethlehem Steel Corp., PA (USA). Homer Research Lab.
• DOE Contract Number: FC07-84ID12545
• OSTI ID: 5892575
• Report Number(s): DOE/ID/12545-1-Vol.3; ON: DE89009033
• Country of Publication: United States
• Language: English

Related Subjects

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& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
36 MATERIALS SCIENCE
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ALLOYS
CASTING
CONTROL
DESIGN
DOCUMENT TYPES
FABRICATION
FLOW MODELS
IRON ALLOYS
IRON BASE ALLOYS
MATHEMATICAL MODELS
NOZZLES
OPTIMIZATION
PROCESS CONTROL
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STEELS
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