磨煤机辊套双金属卧式离心复合铸造充型及凝固规律
发布时间：2018-10-15 14:15
【摘要】：运用ProCAST铸造模拟软件对磨煤机辊套的双金属卧式离心复合铸造工艺的充型和凝固过程进行模拟。外层金属是卧式离心铸造,三维建模时不建立浇注系统,浇道位置选在辊套外层内表面,旋转轴设定为与重力方向垂直;内层金属为重力铸造,浇道设置在铸型小径端。结果表明,外层金属浇注时,金属液进入铸型后首先以与铸型运动相反的方向到达铸型直径大的一端,然后分流量不同的两股充填铸型的大端,两股金属液汇合后以螺旋线形式充填铸型。不同时刻磨煤机辊套外层金属凝固过程的温度变化均从外向内依次降低。内层金属充填时金属液以与重力相同的方向充填到铸型的大径端,然后分为两股流量相同的金属充填大径端,两股金属液汇合后铸件液面稳定上升并充满整个型腔。
[Abstract]:The mold filling and solidification process of bimetallic horizontal centrifugal compound casting process of roller sleeve of coal mill were simulated by ProCAST software. The outer metal is horizontal centrifugal casting, the gating system is not established in 3D modeling, the runner is located on the outer surface of the roller sleeve, the rotation axis is set to be perpendicular to the gravity direction, the inner layer metal is gravity casting, and the sprue is arranged at the end of the mold path. The results show that when the outer metal is poured into the mold, the liquid metal first reaches the end of the mold with large diameter in the opposite direction from the movement of the mold, and then divides the two strands of the mold with different flux to fill the big end of the mold. The two strands of molten metal converge and fill the mold in the form of spiral lines. The temperature change of the outer metal solidification process of the roller sleeve decreases from outside to inside at different times. When the inner layer is filled with metal, the liquid metal is filled in the same direction as gravity to the big diameter end of the mold, then it is divided into two large diameter ends of metal filling with the same flow rate. The liquid surface of the casting rises steadily and fills the whole cavity after the two metal liquids converge.
【作者单位】： 河南工业大学机电工程学院;河南平高电气股份有限公司;哈尔滨工业大学材料科学与工程学院;
【基金】：河南工业大学高层次人才基金项目(2013BS050) 河南省高等学校重点科研项目(16A430014)
【分类号】：TD453;TG24
[Abstract]:The mold filling and solidification process of bimetallic horizontal centrifugal compound casting process of roller sleeve of coal mill were simulated by ProCAST software. The outer metal is horizontal centrifugal casting, the gating system is not established in 3D modeling, the runner is located on the outer surface of the roller sleeve, the rotation axis is set to be perpendicular to the gravity direction, the inner layer metal is gravity casting, and the sprue is arranged at the end of the mold path. The results show that when the outer metal is poured into the mold, the liquid metal first reaches the end of the mold with large diameter in the opposite direction from the movement of the mold, and then divides the two strands of the mold with different flux to fill the big end of the mold. The two strands of molten metal converge and fill the mold in the form of spiral lines. The temperature change of the outer metal solidification process of the roller sleeve decreases from outside to inside at different times. When the inner layer is filled with metal, the liquid metal is filled in the same direction as gravity to the big diameter end of the mold, then it is divided into two large diameter ends of metal filling with the same flow rate. The liquid surface of the casting rises steadily and fills the whole cavity after the two metal liquids converge.
【作者单位】： 河南工业大学机电工程学院;河南平高电气股份有限公司;哈尔滨工业大学材料科学与工程学院;
【基金】：河南工业大学高层次人才基金项目(2013BS050) 河南省高等学校重点科研项目(16A430014)
【分类号】：TD453;TG24
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