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Design and Experiment of the High Speed Wire drawing with Ultrasound

Chinese Journal of Mechanical Engineering 2009年第4期22卷 580-586页

作者： QI Haiqun SHAN Xiaobiao XIE Tao School of Meehatronics Engineering Harbin Institute of Technology Harbin 150001 China Department of Material and Chemical Engineering Heilongiiang Institute of Technology Harbin 150050 China

The previous experiments of wire drawing with ultrasonic vibration were mostly carried out on self-made machine or drawing test machine and the drawing speed didn＇t conform to practical production. In order to promote the practical application of the technology, the ultrasonic vibration system was designed and manufactured by using the classical dynamics method. The dynamic characteristic of the ultrasonic vibration system was analyzed. The performance parameters of the system were measured on the resistance analyzer. The oxygen-free brass wire drawing with ultrasonic vibration at the approximate speed of practice was carried out on the LH-200/17 drawing machine. By comparing the wire drawing through ultrasonic vibration and the conventional wire drawing, the experimental results show that the drawing process with ultrasound was steady at the high drawing speed of 1 126 mm/s, while the broken wire often occurs at the speed of 980 mm/s during the conventional wire drawing; the ultrasonic vibration reduced the drawing force by 7 %; and the ultrasound also reduced the uneven deformation of the wire and greatly improved the surface quality of the wire. The research results provide theoretical and experimental support for the practice and application of the wire drawing by ultrasonic vibration.

关键词： ultrasonic vibration wire drawing drawing experiment drawing force surface quality

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Wear conditions of Al2O3-TiC/Al2O3-TiC-CaF2laminated ceramic drawing dieused for 45#steeldrawing process

Wear conditions of Al2O3-TiC/Al2O3-TiC-CaF2laminated ceramic...

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第八届中国功能材料及其应用学术会议

作者： SONG Pei-long YANG Xue-feng WANG Shou-ren YANG Li-ying School of Mechanical Engineering University of Ji’nan

ISBN: (纸本)9783037859698

AlO-TiC/AlO-TiC-CaF laminated ceramic drawing die used for drawing experiment was prepared by vacuum hot pressing *** finite element models of 45# steel and wire drawing die were built by SolidWorks and simulation analysis of drawing process were done by FEM simulation *** axial stress,strain distribution and drawing force during deformation were *** microstructure of the worn drawing die was observed by scanning electron microscopy(SEM) and the composition was investigated by energy dispersive X-Ray spectroscopy(EDS).Results show that the wear conditions of AlO-TiC-CaF material layers were serious than *** because of the ’dragging effect’,solid lubricating films formed in AlO-TiC-CaF material layers covered on AlO-TiC material *** drawing die owes self lubricating *** considering friction effective on invariable zone of the drawing die,the simulation result of drawing force was smaller than the measurement value.

关键词： drawing progress drawing force Finite element analysis Laminated ceramic drawing die Wear

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THE EFFECT OF FRICTION AT SIZING SURFACE ON DRA WING force

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Transactions of Nonferrous Metals Society of China 1992年第1期2卷 84-88页

作者： Chen Jiamin Bao Junfeng Chang Fumian Northeast University of Technology Shengyang 110006 China Shenyang Non-ferrous Metal Works Shengyang 110102 China

Regarding the sizing surface zone as a quasi-plasticity one and using yielding criterion,a new drawing force calculating formula in which the sizing surface friction was taken into account is *** calculated and experimental results show that for rod drawing and tube sinking,it is permissible to neglect the effect of the friction at the sizing surface,but for tube drawing with a stationary mandrel,especially for thin-wall tube drawing this friction should not be neglected.

关键词： sizing surface Friction effect drawing force

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