應用於鋼液純化之多元氧化物熔體的高溫物理性質量測技術

High-Temperature Measurement Techniques for the Physical Properties of Multi-Component Oxide Melts Applied in Steel Refining

多元氧化物熔體的高溫物理性質在鋼鐵冶煉、銲接製程與連鑄製程等高溫場域，扮演至關重要的角色。舉例來說在電弧爐(Electric Arc Furnace, EAF)冶煉製程中，如何製造優越發泡渣是一項很重要的課題，起因於可以有效降低電力輸出量，而多元氧化物熔體的高溫物理性質，如黏度、表面張力、密度等，將直接顯著影響發泡渣特性優劣。本文將針對黏度、表面張力與密度等高溫量測裝置進行介紹，並透過已知特性之熔體進行精準度評估，最後以電弧爐造渣劑為例呈現出高溫物理性質間的關聯性。

The high-temperature physical properties of multi-component oxide melts play a crucial role in high-temperature fields such as steelmaking, welding processes, and continuous casting processes. For example, in the Electric Arc Furnace (EAF) steelmaking process, the production of superior foaming slag is a critical issue due to its ability to effectively reduce power consumption. The high-temperature physical properties of multi-component oxide melts, such as viscosity, surface tension, and density, directly and significantly influence the quality and characteristics of foaming slag. This study introduces high-temperature measurement devices for viscosity, surface tension, and density, followed by an accuracy evaluation using melts with known properties. Finally, the interrelationships among high-temperature physical properties are demonstrated using slagging agents for the Electric Arc Furnace as an example.