大直径SUS304管毛刺过程有限元分析

IF 4.9 Q2 NANOSCIENCE & NANOTECHNOLOGY
J. Ichikawa, S. Nishida, Yuta Kashitani, Kentaro Tsunoda, Yuto Horigome, Naoki Ikeda, Y. Sato
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引用次数: 0

摘要

本文介绍了大直径SUS304管冷刺过程的有限元分析方法。如216.3 mm的大直径管道用于工厂作为气体和液体的流动通道。管道的毛刺加工通常是为了形成分支。毛刺成型是分支管的典型成型工艺之一。毛刺过程是通过从准备好的孔中拉出模具来实现的。支管一般采用焊接连接。然而,这一过程存在一些问题。首先,毛刺过程取决于管材的成形极限。其次,成形分支边缘的壁厚和应变分布不均匀。这些问题都是由孔前形状引起的。一般来说,确定最佳预孔形状比较困难。许多尝试和错误是需要的。在本研究中,我们提出了用有限元法分析估算母管最佳预孔形状的方法。母管公称直径为200A。支管目标公称通径为100A。直径114.3 mm,壁厚3.0 mm。目标毛刺壁高为10mm,边缘壁高均匀。10毫米的高度意味着在毛刺加工后不需要加工,并且易于焊接将支管连接到母管。分析模型的初始预孔形状为简单的圆形。通过有限元分析,测量毛刺位置的高度。然后对纵向和周向直径进行了调整。在确定了两个方向的最优直径后,利用点跟踪函数对45°方向的直径进行分析,估计初始最优直径。最终形成的毛刺形状具有均匀的10mm高度。验证了最佳预孔估算方法的有效性。Junshi Ichikawa等,Res. Rev. J Mat. Sci. 2018, vol . 6 DOI: 10.4172/2321-6212-C3-020
本文章由计算机程序翻译,如有差异,请以英文原文为准。
FEM Analysis for Burring Process of Large Diameter SUS304 Tube
T paper describes a finite element method (FEM) analysis for cold burring process of large diameter SUS304 pipe. The large diameter pipes such as 216.3 mm are used for a plant as a flow channel of gas and liquid. A burring process of pipe is generally for forming the branch. Burring molding is one of the typical molding techniques for branch pipes. The burring process is achieved by drawing of die from prepared hole. And the branch pipes are generally joined by welding. However this process has some problem. First, the burring process is depending on the forming limit of pipe. Second, the wall thickness and strain distribution of formed branch edge is unequal. These problem is caused the pre-hole shape. It generally has difficulty to determine the optimum pre-hole shape. Many try and error is needed. In this study, we proposed that the method of estimation for optimum pre-hole shape of mother pipe by finite element method analysis. The nominal diameter of mother pipe is 200A. And the target nominal diameter of branch pipe is 100A. The diameter is 114.3 mm, and the wall thickness is 3.0 mm. And target burring wall height is 10 mm with uniformly wall height around the edge. The height 10 mm means that is not needed the machining after burring process and is easy to weld to join the branch pipe to mother pipe. Initial pre-hole shape of analysis model is simple circle. After FEM analysis, the height of burring position was measured. Then the diameters of longitudinal direction and circumferential direction was adjusted. After optimum diameter of both direction diameter was determined, the diameter of 45 °direction was analyzed by using point tracking function to estimate of initial optimum diameter. Eventually, the burring formed shape had an uniform 10 mm height. It was clarified that the method of estimation for optimum pre-hole was effective. Junshi Ichikawa et al., Res. Rev. J Mat. Sci. 2018, Volume 6 DOI: 10.4172/2321-6212-C3-020
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来源期刊
Nanotechnology, Science and Applications
Nanotechnology, Science and Applications NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
11.70
自引率
0.00%
发文量
3
审稿时长
16 weeks
期刊介绍: Nanotechnology, Science and Applications is an international, peer-reviewed, Open Access journal that focuses on the science of nanotechnology in a wide range of industrial and academic applications. The journal is characterized by the rapid reporting of reviews, original research, and application studies across all sectors, including engineering, optics, bio-medicine, cosmetics, textiles, resource sustainability and science. Applied research into nano-materials, particles, nano-structures and fabrication, diagnostics and analytics, drug delivery and toxicology constitute the primary direction of the journal.
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