Transactions of Materials and Heat Treatment

Title：Reach on process of closed extruding fine-blanking and material flowing rule

Authors： DENG Ming ZHANG Hui-jie LV Lin WANG Zheng-li (Chongqing University of Technology Chongqing 400054 China)

Unit：

KeyWords： fine blanking stamping die forming

ClassificationCode：TG386

year,vol(issue):pagenumber：2009,34(6):39-41

Abstract：

As for the existed problem that inductile parts with high thickness were hard to deform by fine-blanking,the concept and process of closed extruding fine-blanking were proposed,and the principles and characteristics of the process's course were described. The experiment die of closed extruding fine-blanking was designed. Using this process,cylindrical parts of 15 mm in diameter and 13 mm in height with highly dimensional precision and low degree of roughness were deformed on the basis of inductile material YL12. Finally,the flowing law and product quality of materials in deformation zone,and the relationship between the die and billets were analysed. The results show that for the exterior surface of fine-blanking parts,the higher packing rate,the larger light-zone; the inner surface is easier to form whole light-zone than the exterior surface; and the size of the surface's light-zone is also largely related to the stock thickness and the match of the main and supplementary die's pitting depth

Funds：

重庆市科技攻关资助项目(CSTC,2007AC3032)

Reference：

[1]涂光祺.精冲技术[M].北京:机械工业出版社,1990.
[2]彭群,李荣洪.厚板精冲技术的工艺研究[J].材料科学与工艺,2008,15(4):342-344.
[3]邓明,孙成亮.低塑性厚板的精密轮廓对向凹模冲裁技术及应用[J].中国机械工程,2006,17(20):2179-2182.
[4]邓明,夏庆发,杜丽伟.基于变形区显微状态分析的精冲成形机理研究[J].塑性工程学报,2005,12(6):71-73.

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