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首页> 外文期刊>Steel Research International >Transient Thermal-Stress Analysis of Steel Slag Pots: Impact of the Solidifying-Slag Layer on Heat Transfer and Wear
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Transient Thermal-Stress Analysis of Steel Slag Pots: Impact of the Solidifying-Slag Layer on Heat Transfer and Wear

机译：钢渣罐的瞬态热应力分析：凝固渣层对传热和磨损的影响

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摘要

The containers used for steel slag transportation to the recycling depot undergo high-temperature gradients and often deform plastically. Also, parts of the thereby solidified slag adhere to the pot walls, causing demolding problems and wear. A thorough finite-element analysis of the heat transfer, initiated by filling the pots and essentially driven by radiation, and the thermal stresses is performed. Due to periodic fill-in and discharge, these are assumed to admit a quasi-stationary state referring to the pot temperature before their emptying. The so obtained results aid optimizing the pot shape and the transport process in terms of minimizing maintenance and anti-adhesive cladding. A layer of solidified slag is found to exist throughout the transport process. Although the phase change occurs almost instantaneously at a liquid-solid interface, the "mushy zone" is considered in the accompanying analytical study of the associated Stefan-type problem. Good correlations of the predicted temperatures to the measured ones and the resultant surface damaging are obtained.
机译：用于将钢渣运输到回收站的容器会经历高温梯度，并且经常会发生塑性变形。而且，由此固化的炉渣的一部分粘附在罐壁上，引起脱模问题和磨损。对热量的传递进行了彻底的有限元分析，该分析是通过装满罐子并基本由辐射驱动的，并进行了热应力的分析。由于周期性的填充和放电，假定它们在排空之前参照罐的温度进入准静态状态。如此获得的结果有助于在最小化维护和防粘覆层方面优化锅的形状和运输过程。发现在整个运输过程中都存在一层固化炉渣。尽管相变几乎是在液-固界面处瞬间发生的，但在伴随的斯蒂芬型问题的分析研究中却考虑了“糊状区”。获得了预测温度与测得温度的良好相关性，以及由此产生的表面损伤。

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