针对外壁具有多台阶的筒形结构锻造毛坯的形状特点，提出一种引伸-辊挤复合成形技术，通过带有变内径辊轮的挤压作用实现该种构件的塑性成形，解决热冲拔工艺存在的材料利用率低、锻造毛坯质量差等问题。介绍引伸-辊挤复合成形的原理，对稳定变形条件进行分析，并完成引伸-辊挤成形装置的设计，较好地实现辊轮的同步运动，解决了飞边问题。验证结果表明，采用该工艺能够实现该类构件的精确成形，大幅度提高材料利用率，降低综合生产成本，实现节能降耗，达到了预期研究目标。
According to the forging blank’s cylindrical shape features with multi?step ektexine,the compound forming of drawing and rolling?extrusion was put forward to realize the plastic forming of the component by the extrusion of roll wheel with the variable internal diameter,which solves the problems of low utilization ratio of metal materials and poor quality of forging blanks during the hot?punching and drawing process. The principle of the compound forming of drawing and rolling?extrusion was introduced,the steady deformation conditions were analyzed,and the design of the forming device was presented. The synchronous motion of roller was realized and burring was avoided. The experiment verifies that the precision forming of the component can be achieved by this technology,which greatly improves the material utilization,reduces the production costs and saves energy,and anticipated goal of this research is achieved.
参考文献
| [1] | 张志明,黄少东,刘川林,陈军,庄新村,符韵,赵志翔,王艳彬.弹体成形工艺数字化设计系统的开发与实践[J].精密成形工程,2010(06):55-59. |
| [2] | 伍太宾.超高强度钢薄壁深盲孔弹体的精密成形技术[J].兵工学报,2005(04):515-518. |
| [3] | Z. Pater;A. Gontarz;W. Weronski .Cross-wedge rolling by means of one flat wedge and two shaped rolls[J].Journal of Materials Processing Technology,2006(1/3):550-554. |
| [4] | S. Urankar;M. Lovell;C. Morrow .Development of a critical friction model for cross wedge rolling hollow shafts[J].Journal of Materials Processing Technology,2006(1/3):539-544. |
| [5] | S. Urankar;M. Lovell;C. Morrow .Establishment of failure conditions for the cross-wedge rolling of hollow shafts[J].Journal of Materials Processing Technology,2006(1/3):545-549. |
| [6] | 崔波,梁继才,张昕,刘国平.空心件楔横轧成形过程的应力应变分析[J].农业机械学报,2001(01):102-104. |
| [7] | 张康生,王宝雨,刘晋平,胡正寰.楔横轧空心件壁厚变化规律实验研究[J].锻压技术,2000(02):34-36. |
| [8] | 张康生,刘晋平,王宝雨,胡正寰.楔横轧空心件稳定轧制条件分析[J].北京科技大学学报,2001(02):155-157. |
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