High Grade Bloom Continuous Casting Technology by Nippon Steel & Sumikin Engineering

oleh Satoshi Senoo, Hirofumi Higashi, Setsuo Kittaka, Yasuaki Miura

Penerbit - NIPPON STEEL & SUMIKIN ENGINEERING CO.,LTD, Japan

Kategori - Novel Am

Special alloy steel is widely used for the bearings and structural parts for the automobile and home electronics. We started up first continuous caster for the special alloy steel in 1977. Since then, we have been highly appreciated by special steel industry and have supplied the bloom continuous casters which applied innovative technology to the special steel manufacturer all over the world. In 1982, we developed and supplied the large radius type large section bloom caster which can produce the special alloy steel and can improve the productivity, the bloom quality and the production yield. Our large radius type large section bloom caster has many advantages on bloom quality improvements. 1) Reduction of the surface and internal cracks and internal inclusion thanks to Optimum Roll Profile Engineering. 2) Reduction of the surface cracks thanks to high accuracy mold Oscillation and uniform secondary cooling. 3) Improvement of the center segregation thanks to Tundish Plasma Heater and Optimum Soft Reduction. 4) Reduction of the surface inclusions and pinholes thanks to Optimum In-mold electromagnetic stirrer(M-EMS). All the above technology can be applied to new or existing bloom casters supplied not only by NIPPON STEEL & SUMIKIN ENGINEERING but also by other caster suppliers.

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