磁型铸造时,浇注的液态金属将气化模烧毁,从而取代了模型的位置,凝固成铸件。根据这一特点,磁型铸造对气化模的主要要求是:气化模遇到液态金属时能按照所要求的速度及强度气化;发气量要低;残留物应最少。那种材料适合上述要求呢?可以考虑的材料是某些泡沫塑料,例如泡沫环氧、泡沫酚醛、泡 Magnet casting, the liquid metal casting will be vaporized mode burned, which replaced the model’s position, solidified into castings. According to this feature, the main requirement of magnetic casting for gasification molds is that the gasification mold can be gasified at the required speed and strength when it encounters liquid metal; the gas evolution is low and the residue should be minimal. Which of these materials is suitable for the above requirements? Materials that can be considered are certain foams, such as foam epoxy, foam phenolic,