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首页> 外文期刊>ISIJ international >Infiltration Phenomena of Molten Powder in Continuous Casting Derived from Analysis Using Reynolds Equation Part 2: Unsteady Analysis
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Infiltration Phenomena of Molten Powder in Continuous Casting Derived from Analysis Using Reynolds Equation Part 2: Unsteady Analysis

机译：雷诺兹方程分析得出的连续铸造熔液渗透现象第二部分：非定常分析

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摘要

A new type of model for the powder infiltration in continuous casting of steel is developed. Succeeding the previous report on a steady state analysis, this paper presents an unsteady model that uses Reynolds equation and the equation of the motion of the solidified shell as fundamental equations. The analysis clarifies in details the cyclic movement of a solidified shell during mold oscillation. Mold powder can be infiltrated because the cyclic movement of the shell lags behind the mold oscillation. This provides a period when the mold/cast metal gap opens, during the downward motion of the mold. In this period, molten powder is infiltrated down into the channel. The model also clarifies that the powder infiltration is greatly influenced by two factors; the peak distance between solidified shell and mold wall during the oscillation, and the phase shift of the movement of solidified shell from the mold oscillation. Furthermore, the tendency of the powder consumption to decrease with increasing the powder viscosity can be easily understood through the mechanism of the powder infiltration derived from the analysis. Those results indicate that the model essentially reveals the unsteady behavior of powder infiltration during the mold oscillation.
机译：开发了一种新型的钢连铸粉末浸渗模型。继先前的稳态分析报告之后，本文提出了一个非稳态模型，该模型使用雷诺方程和凝固壳运动方程作为基本方程。该分析详细阐明了结晶器振荡期间凝固壳的循环运动。由于壳的循环运动滞后于结晶器振动，因此结晶器粉末可以渗透。这提供了在模具向下运动期间打开模具/铸件金属间隙的时间。在此期间，熔融粉末向下渗透到通道中。该模型还阐明，粉末渗透受两个因素的影响很大。振荡过程中凝固壳与模具壁之间的峰值距离，以及结晶器振荡导致凝固壳运动的相移。此外，通过从分析得出的粉末渗透的机理，可以容易地理解随着粉末粘度的增加粉末消耗减少的趋势。这些结果表明，该模型实质上揭示了模具振动过程中粉末渗透的非稳态行为。

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