Technological developments in near-net-shape casting for mini-steelmills
✍ Scribed by L.L. Teoh
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 545 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0924-0136
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✦ Synopsis
New continuous casting techniques from liquid steel into sections closer to the final profile of the fiat products --sheets or strip --are being developed. This near-net-shape casting technology could have an enormous economic impact on many small-scale steelworks (or mini-steelmills) and allows them to compete effectively against large integrated steelmills to produce flat rolled products. This paper focus on problems and solutions of heat extraction rate to meet the productivity requirements, feeding molten steel uniformly into a near net shape channel, lateral containment, solidification behaviour of steel shell growth, and process control so as to achieve adequate as-cast surface quality necessary to allow subsequent direct roiling to produce high quality sheets or strip. Various processes are compared and their potential merits and drawbacks of these processes are discussed.