Intensive Emission of Droplets during Melting of Metal Samples in a High-Frequency Inductor

IF 1 4区 物理与天体物理 Q4 PHYSICS, APPLIED
T. I. Borodina, V. V. Glazkov, Yu. P. Ivochkin, K. G. Kubrikov, O. A. Sinkevich, I. O. Teplyakov, S. M. Yudin
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引用次数: 0

Abstract

The results of experimental and computational studies of the processes accompanying the melting of metal samples heated in air using induced currents are presented. The materials used for the experimental models—spheres and cylinders with a characteristic size of 10 mm—were pure iron, nonferrous metals, and various grades of steel. An unusual physical effect observed in experiments with iron and steels and associated with the intense release of sparks from the samples was studied: small brightly glowing metal droplets. A possible thermomechanical mechanism for the emission of droplets is proposed, based on the occurrence of excess melt pressure during metal melting inside the volume of the sample, limited by the resulting solid shell consisting of iron oxides. Numerical calculations were carried out, the results of which generally confirm the hypothesis presented.

Abstract Image

金属样品在高频感应器中熔化过程中液滴的密集发射
摘要 本文介绍了利用感应电流在空气中加热金属样品熔化过程的实验和计算研究结果。用于实验模型的材料--特征尺寸为 10 毫米的球体和圆柱体--有纯铁、有色金属和各种等级的钢。研究人员在铁和钢的实验中观察到了一种不寻常的物理效应,这种效应与样品释放出的强烈火花有关:发光的金属小液滴。根据金属在试样内部熔化时产生的过大熔体压力,以及由此产生的由铁氧化物组成的固体外壳的限制,提出了小液滴发射的可能热力学机制。我们进行了数值计算,结果基本证实了上述假设。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
High Temperature
High Temperature 物理-物理:应用
CiteScore
1.50
自引率
40.00%
发文量
0
审稿时长
4-8 weeks
期刊介绍: High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.
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