锻压技术

含突变曲线异形环件轧制工艺

英文标题：Rolling process for profiled rings with abrupt curve

分类号：TG335

出版年,卷(期):页码：2019,44(7):101-105

摘要：

针对截面由矩形和突变曲线复合而成的异形环件，以异形耐磨圈为例，提出了一种异形环件轧制方法。以环件锻件图为依据，确定了整体式驱动辊和圆柱式芯辊的组合；基于刚性平移原理计算得到环轧毛坯的变形程度和形状尺寸，避免了轧制过程中由于毛坯设计不合理而造成的充不满、鱼尾、尺寸超差等缺陷；经与自由锻制坯方法对比后，设计了制坯所用胎模，确定了制坯工艺，并对制坯工艺流程进行了优化，提高了毛坯尺寸精度和制坯效率，最后通过实际生产验证了该工艺方法的稳定性和可靠性。该工艺方法生产成本低，生产效率高，材料利用率高，所得异形环件内部质量好、精度高。

For the wear-resistant profiled ring whose cross section was composed of rectangle and abrupt curves, its rolling technology was proposed. Based on the ring forging drawing, the combination of integral driving roller and cylindrical core roller was determined, and the deformation degree, shape and size of ring rolled blank were calculated based on the rigid translation theory to avoid the defects such as filling dissatisfaction, fish tail and size deviation caused by the unreasonable blank design during the rolling process. Then, the loose toolings used for blanking were designed, and the blanking process was determined after comparing with the free forging method. Furthermore, the blanking process was optimized to guarantee the dimension accuracy and efficiency of blanking process. Finally, the method as mentioned was proved to be stable and reliable by the practical production. Thus, the proposed method is low cost, excellent efficiency and high material utilization rate, and the obtained profiled rings are of good internal quality and high precision.

基金项目：

蒋起臣（1973-），男，学士，高级工程师，E-mail：whyjqc@sina.com

参考文献：

[1]华林.环件轧制理论和技术[M].北京：机械工业出版社, 2001.

Hua L. Theory and Technology of Ring Rolling[M].Beijing: China Machine Press, 2001.

[2]Allwood J M, Kopp R, Mechels D, et al. The technical and commercial potential of an incremental ring rolling process[J]. CIRP Annals-Manufacturing Technology, 2005, 54(1):233-236.

[3]欧阳斌,徐东,范茂艳, 等. GH4169大型异形环件胎模制坯及环轧过程数值模拟[J].模具工业, 2017, 43(10): 13-19，27.

Ouyang B, Xu D, Fan M Y, et al. Numerical simulation of rolling and loose tool per-forming of large scale profiled ring for GH4169 [J]. Die & Mould Industry, 2017，43(10): 13-19,27.

[4]Szabo Z J, Dittrich E. Manufacturing systems for the production of seamless-rolled ring[J]. Journey of Materials Processing Technology, 1996, 60(1-4): 67-72.

[5]华林, 钱东升, 邓加东, 等. 超大型环件轧制理论与技术[J]. 锻压技术, 2018, 43(7): 17-31.

Hua L，Qian D S，Deng J D，et al. Theory and technology of super-large ring rolling [J]. Forging & Stamping Technology, 2018, 43(7): 17-31.

[6]陈孝庆, 孟瑞斌, 唐甲浪, 等. 内台阶型环件径轴向辗轧技术[J]. 锻压技术, 2018, 43(4): 94-99.

Chen X Q，Meng R B，Tang J L，et al. Radial-axial rolling technology for ring with inner steps [J]. Forging & Stamping Technology, 2018, 43(4): 94-99.

[7]Davey K, Ward M J. The practicalities of ring rolling simulation for profiled rings[J]. Journal of Materials Processing Technology, 2002, 125(1): 619-625.

[8]顾森东, 张立文, 张驰, 等. L形截面环件径轴向轧制过程数值模拟与工艺优化[J]. 锻压技术, 2017, 42(5): 48-51.

Gu S D, Zhang L W, Zhang C, et al. Numerical simulation and process optimization on radial-axial rolling process for L-shaped cross-sectional ring[J]. Forging & Stamping Technology, 2017, 42(5): 48-51.

[9]Park M, Lee C, Lee J, et al. Development of L-sectioned ring for construction machines by profile ring rolling process[J]. International Journal of Precision Engineering & Manufacturing, 2016, 17(2):233-240.

[10]王志军, 齐会萍, 付建华. 基于锻坯的大型内台阶环件双件轧制[J]. 锻压技术, 2017, 42(2):82-86.

Wang Z J, Qi H P, Fu J H. Study on two-piece rolling for large inner step based on forging stock[J]. Forging & Stamping Technology, 2017, 42(2): 82-86.

[11]华林, 吴敏, 贾耿伟, 等. GCr15环件冷轧-淬火中的组织演化[J]. 武汉理工大学学报, 2010, 32(15):35-38.

Hua L,Wu M,Jia G W, et al. Microstructure evolution law of steel GCr15 in process of cold ring rolling-queenching[J]. Journal of Wuhan University of Technology, 2010, 32(15):35-38.

[12]戴玉同,马琦.大型复杂环件轧制工艺发展现状与对策[J].锻造与冲压, 2013, (15): 50-53.

Dai Y T, Ma Q. Development status and countermeasure of large and complex ring rolling technology[J]. Forging & Metalforming, 2013, (15): 50-53.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】