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一、前言金属芯盒的机械加工制造比较复杂,周期长,成本高,在机械加工力量薄弱的工厂是一项复杂而艰巨的工作。为了解决这个矛盾,经过学习和试验,我们采用了石膏——树脂砂组合造型法精密铸造铁质的金属芯盒,应用在热射芯和壳芯机上。实践证明,这种方法生产出来的芯盒经少许机械加工或不经机械加工即可获得理想的、内形复杂、精度和表面光洁度较高的芯盒。其精度达±0.5毫米/1000毫米之内,表面光洁度达▽4～▽5。这种工艺简单,不
I. Introduction Metal core box machining complex manufacturing, long cycle, high cost, weak in the mechanical processing plant is a complex and arduous task. In order to solve this contradiction, after studying and experimenting, we use the gypsum-resin sand molding method to cast iron core metal box precision casting, used in thermal core and shell core machine. Practice has proved that this method to produce the core box with little or no mechanical processing to get the ideal, complex shape, precision and surface finish higher core box. The accuracy of ± 0.5 mm / 1000 mm within the surface finish of ▽ 4 ~ ▽ 5. This process is simple, no