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使用保温冒口是为了控制热损失,延缓冒口内金属凝固的时间,强化铸件的补缩。由于保温冒口的应用和冒口形貌的合理化,不仅使冒口下面组织致密,且冒口缩孔也得以集中;冒口缩孔呈U形,底平、壁薄,从而提高冒口的补缩效率,进而提高工艺出品率和铸件质量。 我国近年来在保温冒口的研究和应用上取得了较大进展。各种类型的保温冒口相继出
The use of thermal riser is to control the heat loss, delay riser metal solidification time, strengthening the casting of shrinkage. Due to the application of thermal riser and riser topography rationalization, not only underneath riser tissue dense, and riser shrinkage can also be centralized; riser shrinkage was U-shaped, flat bottom, thin wall, thereby increasing riser Replenishment efficiency, thereby improving the production rate and casting quality. In recent years, China has made great progress in the research and application of thermal insulation riser. Various types of thermal risers have been out