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首页> 外文期刊>ISIJ international >Research on the Bimetallic Composite Roll Produced by an Improved Electroslag Cladding Method: Mathematical Simulation of the Power Supply Circuits
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Research on the Bimetallic Composite Roll Produced by an Improved Electroslag Cladding Method: Mathematical Simulation of the Power Supply Circuits

机译：改进的电渣熔覆法制备双金属复合轧辊的研究：电源电路的数学模拟

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摘要

Bimetallic composite roll has been given more and more attentions because of its superiority in playing the advantages performance of the internal and external materials at the same time. In the present study, a 2D quasi-steady state mathematical model of the electroslag cladding technology for producing bimetallic composite roll was developed by the Fluent software with the UDS and UDF function. Characteristics of the electromagnetic field, flow field and temperature field of the composite roll system have been numerically simulated and the laboratory scale experiments with the different power supply circuits were also developed to provide a verification of the mathematical models. The results indicate that: simulation results of the temperature distribution in the composite roll were well verified by the corresponding experiments. With the using of current supplying mold (CSM~(?)), the improved conductive circuit is more beneficial to improve the distributions of current density and Joule heat in the slag pool and keep the high temperature zone away from the roll core surface than the conventional conductive circuit. On one hand, it makes the roll core be no longer as a pole of the electroslag process and the temperature adjustment of the slag pool become more flexible. On the other hand, it leads to a partial micro-melting of the roll core surface which is beneficial to form a metallurgical bonding and effectively avoid the mechanical mixing of the liquid metal between the roll core and composite layer, so, it can improve the comprehensive performance of bimetallic composite roll.
机译：双金属复合辊由于其在同时发挥内，外材料优势性能方面的优越性而受到越来越多的关注。在本研究中，利用具有UDS和UDF功能的Fluent软件，开发了用于生产双金属复合轧辊的电渣熔覆技术的二维准稳态数学模型。对复合辊系统的电磁场，流场和温度场的特性进行了数值模拟，并开发了使用不同电源电路的实验室规模的实验，以验证数学模型。结果表明：通过相应的实验很好地验证了复合辊中温度分布的模拟结果。通过使用电流供应模具（CSM〜（？）），改进后的导电电路比在炉渣池中更有利于改善电流密度和焦耳热的分布，并使高温区域远离辊芯表面。传统的导电电路。一方面，它使辊芯不再像电渣工艺的极点，而且渣池的温度调节变得更加灵活。另一方面，这导致辊芯表面的部分微熔，这有利于形成冶金结合，并有效地避免了液态金属在辊芯与复合层之间的机械混合，因此，可以改善双金属复合辊的综合性能。

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