Packaging simple review of the development of the steel strip continuous casting technology

Packaging steel strip continuous casting technology for the development of a simple review of the purpose is to reduce the packaging steel strip continuous casting caster output slab thickness, in order to minimize the number of hot rolling mill frame, implementation in the shortest production process to produce hot Zagreb plate belt, has low investment, low cost, fast rhythm way of production and economic benefits. Packaging steel strip continuous casting technology, therefore, the early stage of development, process line Settings to completely cancel the roughing mill and casting machine directly connect with finishing mill for the purpose. Therefore, packaging steel strip continuous caster also produced the thickness of the slab under 70 mm ( Generally think that 70 is cancelled roughing mill, casting directly into the upper limit of finishing mill) 。 Such as SMS built the first in the nucor CSP production line, the slab thickness of 45 mm; DE mark and CVRD, joint development of ISP production line, the slab thickness of 50 mm. Sumitomo in the mid - 1980 - also made the thickness of 40 mm packaging steel strip technology development work. At the beginning of the packaging steel strip continuous casting technology development formed two kinds of packaging steel strip continuous casting crystallizer forms: funnel type mold ( As mark west of design) Peace andante crystallizer ( Good for mark, represented by sumitomo design with the steady accumulation of production experience, the practice has proved that under such a slab thickness production packaging steel strip, funnel type mold is more practical, and the parallel plate mould is difficult to control well the slab surface quality, and puts forward high requirements for immersion type nozzle, casting production is not economical. As a result, German mark will improve for parallel plate mould & other; Throws LAN type & throughout; Mould form, while sumitomo stop packaging steel strip parallel plate mold research and development, in turn in the early 1990 s for medium thickness ( 90 - 150毫米) The development of slab continuous casting technology, and considerable achievements.