Study on the Volatilization Condensation Law of Pure Metallic Zinc and Lead During Vacuum DistillationMetallurgical and Materials Transactions B - Tập 54 - Trang 3143-3154 - 2023
Jing Yang, Yuban Lei, Run Huang, Xuan He, Xiaodong Lv, Xue Deng, Renlin Zhu, Miao Li, Xianze Long
In this paper, pure metallic zinc was distilled under vacuum at different temperatures, and pure metallic lead was distilled under vacuum at different temperatures and holding times, the condensation law and microscopic morphology of the condensates were studied in a specially designed multi-stage condenser. The special multi-stage condenser also proved to be a better instrument. Theoretical analy...... hiện toàn bộ
Model for temperature profile estimation in the refractory of a metallurgical ladleMetallurgical and Materials Transactions B - Tập 29 - Trang 651-659 - 1998
T. P. Fredman, H. Saxén
Modeling of the transient thermal state of metallurgical ladels is motivated by the need for estimating the drop in temperature of the liquid metal in the ladle. On-line estimation of the state is required, since the same ladle is used in a number of casting cycles with rapid changes in boundary conditions for the temperature field, and the conditions in the current as well as previous cycles affe...... hiện toàn bộ
Coke Size Degradation and Its Reactivity Across the Tuyere Regions in a Large-Scale Blast Furnace of Hyundai SteelMetallurgical and Materials Transactions B - Tập 51 - Trang 1282-1288 - 2020
Tae Jun Park, Kwang Hyun Ko, Jong Hyup Lee, Sushil Gupta, Veena Sahajwalla, Byong Chul Kim
It has been well recognized that coke samples can be effectively taken out of working blast furnaces using a drilling machine at the tuyere level. The core represents samples with different temperature profiles at various tuyere regions of a large blast furnace. The average coke size at the tuyere level is known to be about 50 pct smaller than the charged cokes. Using fixed bed reactor and XRD tec...... hiện toàn bộ
Effect of heat treatments on In-Situ Al2O3/TiAl3 composites produced from squeeze casting of TiO2/A356 compositesMetallurgical and Materials Transactions B - Tập 33 Số 1 - Trang 31-40 - 2002
Hsu, Chia-Wen, Chao, Chuen-Guang
In-situ Al2O3/TiAl3 intermetallic matrix composites were fabricated via squeeze casting of TiO2/A356 composites heated in the temperature range from 700 °C to 780 °C for 2 hours. The phase transformation in TiO2/A356 composites employing various heat-treatment temperatures (700 °C to 780 °C) was studied by means of differential thermal analysis (DTA), microhardness, scanning electron microscopy (S...... hiện toàn bộ
X-ray Radioscopic Visualization of Bubbly Flows Injected Through a Top Submerged Lance into a Liquid MetalMetallurgical and Materials Transactions B - Tập 51 - Trang 124-139 - 2019
Megumi Akashi, Olga Keplinger, Natalia Shevchenko, Sten Anders, Markus A. Reuter, Sven Eckert
We present an experimental study on the formation and behavior of a liquid metal bubbly flow arising from a downward gas injection through a top submerged lance (TSL). A visualization of the bubble dynamics was achieved by the X-ray radiography combined with high-speed imaging. The experiments were carried out in a parallelepiped container (144 × 144 × 12 mm3) using GaInSn, a ternary alloy that is...... hiện toàn bộ
Study of the Viscosity of Mold Flux Based on the Vogel–Fulcher–Tammann (VFT) ModelMetallurgical and Materials Transactions B - Tập 48 - Trang 220-226 - 2016
Lejun Zhou, Wanlin Wang
Viscosity is one of the most important properties of mold flux and affects the process of continuous casting significantly. In order to describe the variation of viscosity of mold flux accurately in a wide range of temperature occurring in the casting mold, a non-Arrhenius Vogel–Fulcher–Tammann (VFT) model was adopted in this study. The results showed that the adjusted coefficient of determination...... hiện toàn bộ