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Fem Analysis of the Two-Roller Straightening Process of Tube

Author: ChenLei
Tutor: LiuZhiLiang
School: Yanshan University
Course: Mechanical Design and Theory
Keywords: Pipe Two Roll Straightener Roller type MARC Finite Element Analysis
CLC: TG333.23
Type: Master's thesis
Year: 2010
Downloads: 64
Quote: 0
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Abstract


Into the 21st century, with the development of production and technological progress of the machinery industry and national economic sectors , the quality of steel products have become increasingly demanding . Pipe in the process of manufacturing, processing and transportation , due to various factors , there is often a variety of curved defects . Steel pipe finishing is an important step to solve a variety of defects in steel pipe , the Tube Straightening is an important process in the steel pipe finishing process . Two Roll Straightener with high precision, and good quality , as a finishing technology , has always occupied an important position in the straightening areas . At present, at home and abroad for the two-roll straightening machine , mainly concentrated in the the straightening roll -shaped curve design , and the bar straightening process , the deformation process of the two-roll straightening pipe is not enough . Pipe roller straightening process variables variation study has important theoretical and practical significance . In this paper, elastic-plastic pipe bending theory , this paper analyzes the working principle of the two-roll straightening predecessor shape of rolls of two-roll straightening machine design theory , the use of theoretical formulas according to the specific instance of Application of Matlab in the curvature of the six two-roll straightening roller curve , draw a diagram of the corresponding roller . 3D elastoplastic model of the pipe two-roll straightening based on finite element MARC platform , according to the specific instance and straightening process simulation , analysis of changes in various parameters of the pipe in the straightening process . Comparative analysis of the pipe in the the straightening process under the hyperbolic roller and six curvature of the roller type , verification the six curvature of the roller type pipe straightening has a good straightening effect . Straightening speed reduction and roller inclination of the pipe straightening quality , to provide theoretical guidance for the actual production .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling mill machinery equipment > Rolling auxiliary equipment > Straightening machine
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