在铸铁件和铸钢件上应用气压冒口和易割冒口,对于提高铸件质量,降低金属消耗,减轻体力劳动,节约氧气消耗等方面,都获得显著的成绩.1.气压冒口:制造弹壳是用耐火土60%、粘土10%、耐火砖粉30%的混合物,搅拌均匀,再加沸水混成硬坭状,用铁模冲成各种不同尺寸的弹壳,经过自然干燥12~24小时后,在800~1100℃温度中烧结. The application of pneumatic risers and easy cut risers on cast iron and steel castings has yielded significant results in improving the quality of castings, reducing metal consumption, reducing manual labor, and saving oxygen consumption.1 Air-pressure risers: manufacturing Shell is 60% refractory soil, clay 10%, 30% of refractory brick powder mixture, stir well, add boiling water mixed hard 坭 like, with iron mold into a variety of different sizes of shells, after 12 to 24 hours of natural drying After sintering at 800 ~ 1100 ℃ temperature.