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浮选机是供金属矿山选矿使用的主要设备之一,浮选机的叶轮搅动含有硬质颗粒的矿浆,处于低应力冲蚀磨损条件下工作;通常采用含有极高硬度组织的合金白口铸铁件。这种合金白口铸铁很难进行机加工;为了便于在它与轴相配合的部位上进行机械加工,这种叶轮常常采用两种材质的铸合件。图1为6AM浮选机叶轮的原铸件图(其它规格浮选机的叶轮皆与此相类似): 6AM叶轮毛重108公斤,铸件主体材质原为铬镍合金白口铸铁,其硬度值原为HR_c47—50,被铸合的预制环(以下简称预制环A)的
Flotation machine is one of the main equipment used for metal mine beneficiation, the flotation machine impeller agitated slurry containing hard particles, work in low stress erosion wear conditions; usually with extremely high hardness alloy white cast iron Pieces. This alloy white cast iron is difficult to machine; in order to facilitate its parts in the shaft with the machining, the impeller is often used two kinds of castings. Figure 1 is a 6AM flotation machine impeller castings (other specifications of the flotation machine impeller are similar to this): 6AM impeller weight 108 kg, the main body of the casting material is chrome-nickel alloy white cast iron, the hardness of the original HR_c47-50, cast precast ring (hereinafter referred to prefabricated ring A)