China Aluminum Industry Net. 1. Energy Saving and Environmental Protection Trends: Modern melting furnaces are designed with advanced furnace structures and improved refractory masonry to enhance insulation, increase thermal efficiency, and maximize waste heat recovery, thereby reducing overall energy consumption. For example, regenerative automatic combustion systems, magnetic stirring, and segmented furnace doors are now commonly used. Electrolytic aluminum is directly used as a raw material, and desulfurization and dust removal technologies help minimize emissions. Energy efficiency and environmental protection are becoming essential trends in the casting industry.
2. The Trend Toward Pure Melting: The quality of the ingot is closely related to the purity of the molten metal. This means minimizing gas content, slag, and impurities, while achieving better grain refinement. Tilt-type holding furnaces reduce turbulence and secondary pollution caused by dropping molten aluminum. Advanced degassing systems, such as permeable bricks or rotating rotors, are used for melt purification. Online purification systems ensure stable and effective results, improving the quality of the final product.
3. Development in Casting Mold Technology: Low-level crystallizers combined with automated casting systems, especially gas-slip crystallizers using automatic lubrication or graphite rings, significantly improve the surface quality of ingots—especially for high-magnesium aluminum alloys. These systems enhance the straightness of the ingot surface, reduce shell thickness, and decrease machining operations like sawing, tailing, and milling, thus increasing casting yield. Pulsed water technology in automated casting helps produce hollow ingots without core squeezing, reducing cracks at the bottom of hard alloy ingots.
4. Cost Reduction Trends: Optimizing production processes increases efficiency and reduces metal loss. Techniques like rapid melting and isothermal smelting help minimize metal burning. Some aluminum alloys can now be produced using electrolytic aluminum as a raw material. Aluminum processing companies that purchase ingots and cast coils for rolling can lower costs effectively.
5. Advancements in Casting Technology: Large-scale ultra-high-strength alloy casting, electromagnetic casting, and intelligent casting are gaining popularity. Composite casting methods not only save energy but also boost productivity and yield. These innovations are reshaping the future of the aluminum industry, making it more efficient, sustainable, and competitive.
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