半磨擦轮是水泥矿山机械各种勾头重力提升机的重要部件,需要量大。铸件质量要求较高,不得有气孔,砂眼和任何方向的尺寸偏差。而铸钢行业生产半磨擦轮的传统工艺是实样砂模造型。生产实践证明,产品质量不稳定,如铸件表面粗糙及出现缩孔、砂眼和尺寸偏差。因此,废品率较高,为此 Semi-abrasive wheels are all kinds of cement mining machinery hook head gravity hoist an important component, the need for large. Castings of higher quality requirements, may not have stomatal, trachoma and size deviation in any direction. However, the traditional process of producing semi-abrasive wheel in the steel industry is real sand mold modeling. Production practice has proved that product quality is unstable, such as casting surface roughness and shrinkage, blisters and size deviation. Therefore, the rejection rate is higher for this reason