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The Research and Experiment of the Blade Gap’s of Adjusting for Rolling Shear

Author: FanFei
Tutor: LiYuGui
School: Taiyuan University of Science and Technology
Course: Materials Processing Engineering
Keywords: Rolling Shear Blade clearance Finite Element Shear force
CLC: TG333.21
Type: Master's thesis
Year: 2011
Downloads: 27
Quote: 1
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Abstract


Cut is one of the important processes in the sheet metal processing. Shear deformation is a very complex process, the deformation is large and concentrated in a small area of ??the blade clearance near, not only involving the elasticity of plasticity, metal physics and damage and fracture, calculation methods and other disciplines and belongs to multiple nonlinear problems of the material, geometry, and boundary conditions. Therefore, the study of the deformation mechanism is very important and very difficult. Because the improper blade gap cut out of a steel plate collapse, burrs too high, secondary shear surface shear defects in the production process, it is often not only affects the quality of the sheared surface, and also affect the life of the blade seriously affected the normal production of sheet metal processing. Currently, steel processing enterprises mainly uses experience points to adjust the blade clearance, this method applies only to a single or several kinds of steel, a narrow range, and adjust accuracy is not high, brought a lot of trouble to the actual production, also increases production costs. Therefore study of the adjustment and shear zone in the lateral clearance of the cutting edge plate the stress-strain law, the parameters on the process parameters and material properties of the sheet deformation and sectional studied has important significance. The subject of research, not only has a high theoretical value, practice proper design and use of equipment, establishing reasonable shearing process and correct design shear equipment to improve the efficiency and quality of shear, reduce production costs and even environmental protection and other all have important significance. Research projects in Shanxi Province have returned to relying on theoretical analysis, the combination of the three methods of finite element simulation and process experimental way of rolling shear the plate internal stress in the shearing process strain distribution and several major The parameters of the sheared surface quality research and discussion. Establish a Rolling Shear Shear Blade gap mathematical model from a theoretical point of view, through theoretical arrive at a Rolling Shear blade clearance formula, and by a large steel mills experimental data corrected formula. At the same time by means of ANSYS finite element analysis software to establish the finite element analysis model, and explicit dynamic finite element algorithms simulate the rear leaf roll cut shearing process, resulting in the change of the plate stress - strain shear shear force variation in the width direction of the plastic strain distribution and the shearing process, analysis of various shear parameters of the shear force. Finally, the shear experiment to verify the correctness of the finite element simulation analysis of the results of the blade clearance formula. Text for the technology development status of the Rolling Shear shear theory study and derive a formula blade clearance, for the the Rolling Shear equipment localization and sheared surface quality low shearing process provides help .

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