Investigation on the Increasing Material Hardness on Fineblanked Sprocket

2009 ◽  
Vol 83-86 ◽  
pp. 1099-1106 ◽  
Author(s):  
Sutasn Thipprakmas ◽  
C. Chanchay ◽  
N. Hanwach ◽  
W. Wongjan ◽  
K. Vichitjarusgul
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Equal Channel Angular Extrusion ◽  
Grain Structure ◽  
Forming Process ◽  
Element Analysis ◽  
Fine Blanking ◽  
Material Hardness ◽  
Blanking Process ◽  
Cut Surface

In cold working metal forming process, severe plastic deformation results in changes in the material properties. Earlier researches mainly investigated the rolling and equal channel angular extrusion (ECAE) processes. This study focuses on the fine-blanking process, specially the increasing material hardness on the fineblanked sprocket part. The microstructure around the cut surface is observed and the finite element analysis is done to clarify the mechanism of the increasing hardness as well. The microstructure revealed increasingly compressed and elongated grain structure of the contributed grain flow and orientation, as the blankholder and counterpunch forces increased. This resulted in the increased material hardness around the cut surface. Thus, these results theoretically clarified the mechanism of the increasing material hardness in the fine-blanking process regarding microstructural evolution, with the associated finite element analysis. Therefore, the special characteristic features in the fine-blanking process, result in the pronounced hardening around the fineblanked surface.

Design and optimization of a demagnetization device for fine blanking process by finite element analysis

2021 ◽  
Author(s):  
Juan Pablo Arreguin-Rodriguez ◽  
Sergio Antonio Campos Montiel ◽  
Juvenal Rodriguez-Resendiz ◽  
Gonzalo Macias Bobadilla ◽  
Jose Eli Eduardo Gonzalez-Duran
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Fine Blanking ◽  
Design And Optimization ◽  
Blanking Process

Research on Fine Blanking Process with Stepped-Edge Punch

2009 ◽  
Vol 16-19 ◽  
pp. 495-499 ◽  
Author(s):  
Si Ji Qin ◽  
Li Yang ◽  
Jia Geng Peng
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Hydrostatic Stress ◽  
Element Analysis ◽  
Fine Blanking ◽  
Q235 Steel ◽  
Negative Clearance ◽  
Blanking Process ◽  
Industrial Aluminum

The fine blanking process with a stepped-edge punch was researched by finite element method (FEM) and experiment investigation. Finite element analysis showed that the hydrostatic stress of the blank around the edges changes a little during fine blanking process using a stepped-edge punch with negative clearance. The burnish zone of sheared surface increases with the increase of the relative negative clearance. The reasonable forming parameters were presented by a lot of experiment investigations. Parts of three kinds of materials, Q235 steel, copper and industrial aluminum, were formed using fine blanking process with a stepped-edge punch. Full burnish zone were obsearved for all the parts.

Finite Element Analysis of the Fine Blanking Process for Seat Recliner Plate Holder of Recreation Vehicle

2014 ◽  
Vol 1025-1026 ◽  
pp. 391-394
Author(s):  
Jong Deok Kim ◽  
Young Moo Heo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Good Accuracy ◽  
Stress And Strain ◽  
Outer Contour ◽  
Element Analysis ◽  
Fine Blanking ◽  
Complex Part ◽  
The Finite Element Analysis ◽  
Blanking Process

In this paper, the finite element analysis (FEA) of the fine blanking process was conducted for the seat recliner plate holder of recreation vehicle. Because the plate holder was a complex part with the various dimple shapes, it was formed and blanked with a three-station progressive fine blanking tool. The fine blanking tool was optimally designed, manufactured and performed the fine blanking experiments. The shear surface of the outer contour, the stress and strain of the part, and the loads of the tool elements were estimated by the results of the fine blanking simulation. Because the plate holder samples from fine blanking experiments had the good accuracy of the dimples’ position and dimension, it would be noticed the fine blanking simulation was conducted without error.

Leveling Quality Prediction Algorithm

2015 ◽  
Vol 809-810 ◽  
pp. 235-240
Author(s):  
Catalina Maier ◽  
Robin Gauthier
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Model ◽  
Cumulative Effect ◽  
Prediction Algorithm ◽  
Forming Process ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Experimental Values ◽  
Different Characteristics

Roller leveling is a forming process which used to minimize flatness imperfection and residual stresses by repeated forming process of a sheet metal. The determination of the machine settings must be very accurate and ask a precise mechanical study. In order to determine an algorithm which can predict the leveling quality according to the machine settings we start by a theoretical model of stress evolution during the process. The plastification ratio is deducted from this one and the values obtained by this approach are compared whit experimental values. The finite element analysis is performed, in second step in order to assure a good accuracy of the prediction algorithm. Theoretical study determines a minimum of the plastification ratio according to the machine settings. The finite element analysis gives more accurate results due to the consideration of different characteristics of the process, neglected by the theoretical model: cumulative effect of bending/unbending with stretching of the sheet during the passing between each couple of rolls, boundary conditions at the limit of the material deformed by two adjoining couples of rolls, friction force.

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