Research on technology and modeling of pipe bending in a pipe bender

Abstract

Polisan I., Hubskyi S., Kolisnyk K., Chukhlib V., Khodyriev H. Research on technology and modeling of pipe bending in a pipe bender

The article studies the technology of pipe bending and the influence of different shaft diameters on the formation of corrugations of the internal cross-section of the pipe. In the course of the work, an analysis of different pipe materials and their physical and mechanical properties was carried out, since the choice of material significantly affects bending. The calculation of the technological process of bending was performed for different bending angles and wall thicknesses. The Fusion 360 software package was used to visualize and analyze the process. Modeling has shown that the main factor that affects the bending capacity of the pipe during mandrel bending is the relationship between the bending radius and the diameter of the pipe. As a result of the investigation, it was established that when the bending radius changes to 50 mm, corrugation and ovalization critically increases. To remove clear spots of small radius, it is necessary to use a special mandrel to ensure a change in corrugation and ovalization of the finished product.The modeling was carried out in the specialized QForm program. This allowed obtaining graphical dependences of average stresses and stress intensity. The dependence of bending quality on the geometric parameters of the equipment was established and the need to use mandrel mechanisms for small bending radii was substantiated.