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大锻件由钢锭直接锻造成形,内部不可避免存在孔洞、裂纹等缺陷,严重影响锻件的质量,需通过合理的锻造工艺来改善或消除这些缺陷。磨辊轴锻件的拔长需要多工步锻造,每一工步之间相互影响,如果参数控制不当,缺陷就无法被改善。运用有限元软件DEFORM-3D对平砧拔长时磨辊轴内部孔洞的闭合过程进行了数值模拟,研究了不同的工艺参数对锻件内部孔洞闭合效果的影响,得到了较佳的砧宽比、压下率,为实际生产提供理论依据。
Large forgings directly forged by the ingot forming, the inevitable internal holes, cracks and other defects, seriously affecting the quality of forgings, the need for a reasonable forging process to improve or eliminate these defects. Grinding roller shaft forging the need for multiple step forging, each step between the interaction, if the parameters are not properly controlled, the defect can not be improved. The finite element software DEFORM-3D was used to simulate the closing process of the holes inside the grinding roller when the anvil was extended. The effects of different process parameters on the closing effect of the holes in the forging were studied, Pressing rate, to provide a theoretical basis for the actual production.