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New type of groove used to improve friction in roll forging

New type of groove used to improve friction in roll forging
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摘要 A FEM model for a failed industrial example of roll forging was established to analyze the generation mechanisms of the mismatch of size and shape of two spring board.To demonstrate the formulation of these defects,the bites condition and contact status between rectangular groove and workpiece during rolling the first and second spring boards were analyzed.Then,a new oval-diamond groove combining oval groove and diamond groove was presented to eliminate these defects.By analyzing field variables under the same deformation degree,the larger friction can be obtained on the contact surface of workpiece and the oval-diamond groove.The physical experiment validates that the oval-diamond groove can eliminate these defects effectively,and the size of part is in good agreement with design requirement. A FEM model for a failed industrial example of roll forging was established to analyze the generation mechanisms of the mismatch of size and shape of two spring board.To demonstrate the formulation of these defects,the bites condition and contact status between rectangular groove and workpiece during rolling the first and second spring boards were analyzed.Then,a new oval-diamond groove combining oval groove and diamond groove was presented to eliminate these defects.By analyzing field variables under the same deformation degree,the larger friction can be obtained on the contact surface of workpiece and the oval-diamond groove.The physical experiment validates that the oval-diamond groove can eliminate these defects effectively,and the size of part is in good agreement with design requirement.
作者 贾智 周杰 姬金金
机构地区 School of Materials Science and Engineering
出处 《Journal of Central South University》 SCIE EI CAS 2014年第2期493-499,共7页 中南大学学报（英文版）
基金 Project(51275543)supported by the National Natural Science Foundation of China Project(cstc2009aa3012-1)supported by the Key Program of Chongqing Science and Technology Foundation,China
关键词 roll forging spring board oval-diamond groove rectangular groove automobile front axles 摩擦 辊锻 型槽 有限元模型 金刚石 接触状态 变形程度 物理实验
分类号 TG316 [金属学及工艺—金属压力加工] TH117.1 [机械工程—机械设计及理论]
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参考文献15

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二级参考文献10

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共引文献12

Journal of Central South University
2014年 第2期

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