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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >High-speed continuous casting of peritectic carbon steels
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High-speed continuous casting of peritectic carbon steels

机译：包晶碳钢的高速连铸

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摘要

Productivity of an integrated steel plant is improved by high-speed casting of hypo-peritectic steels that makes the productivity of caster meet basic oxygen furnace. In high-speed casting, however, strands of the steels tending to form cracks on the shell in the mold, require off-line conditioning that limits the plant productivity and premium yield. Hypo-peritectic transformation occurring on solidification in mold results in irregular shell-surface roughness that causes non-uniform heat transfer to the mold, causing local lifting of the shell from the mold, recalescence, and surface cracks. Influential factors are summarized on the development of the surface roughness, the non-uniform heat transfer and the decline of mechanical properties of the shell upon recalesce. Effective means are presented to reduce the non-uniformity and the cracks at high casting speeds by controlling the properties of mold flux film infiltrating into the solidifying shell/mold boundary.
机译：通过高速铸造次包晶钢来提高综合铸钢厂的生产率，使铸机的生产率达到基本的氧气炉。然而，在高速铸造中，倾向于在模具中的壳体上形成裂纹的钢绞线需要离线调节，这限制了工厂的生产率和优质的产量。在模具中凝固时发生的亚包晶转变导致不规则的外壳表面粗糙度，从而导致热量不均匀地传递到模具中，从而导致外壳从模具中局部抬起，重新发光和表面裂纹。归因于表面粗糙度的发展，传热不均匀以及外壳再机械时机械性能下降的影响因素。通过控制渗入凝固壳/模具边界的保护渣膜的特性，提出了有效的方法来减少高浇铸速度下的不均匀性和裂纹。

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