1. War in the Micro-World: Identification and Traceability of Endogenous vs. Exogenous Inclusions in Induction Melting
ركز: Utilizing metallographic atlases and SEM/EDS analysis to distinguish between oxides and sulfides formed during the melting process (داخلية) and inclusions introduced by refractory spalling or contaminated charge materials (خارجي).
This section provides precision targeting for root-cause troubleshooting.
الادراج الداخلية: Products of internal chemical reactions (على سبيل المثال, deoxidation products like $Al2O3$ or sulfides like MnS). Usually small and uniformly distributed.
الادراج الخارجية: “Foreign invaders” such as slag entrapment or refractory grains (على سبيل المثال, MgAl2O4 spinel from liners). Usually larger with complex, irregular morphologies.
2. More Than Just a Cover: Selection and Timing of Covering Agents (Insulating & Refining Fluxes)
ركز: An in-depth exploration of the chemical compositions and physical properties of various fluxes. We discuss the “when” و “how much” of additions, and how to select functional agents—for insulation, atmospheric isolation, or inclusion adsorption—based on the specific alloy (على سبيل المثال, High Manganese Steel مقابل. Tool Steel).
- Key Insight: Choosing the right basicity ($V$-ratio) and melting point to ensure the flux actively traps floating inclusions rather than just providing thermal insulation.
3. The Filtration Revolution: Application of Ceramic Foam Filters (CFF) in Induction Furnace Tapping Spouts
ركز: Introducing the integration of filtration units directly into the tapping system to physically intercept microscopic inclusions. We analyze the suitability of different materials (على سبيل المثال, Zirconia, كربيد السيليكون) and pore densities (PPI) for various molten metals, as well as their impact on pouring fluidity.
- آلية: Moving beyond simple physical screening to leverage “Deep Bed Filtration,” where fine inclusions are captured by inertial impaction and Cake Filtration.
