Simultaneous Diameter and Thickness Control in Tube Extrusion

1991 ◽  
Vol 6 (3) ◽  
pp. 188-194 ◽  
Author(s):  
G. Defaye ◽  
L. Caralp ◽  
B. Delfanne ◽  
J. J. Labaig
Keyword(s):  
Thickness Control ◽  
Tube Extrusion

External Calibration in PA12 Tube Extrusion

2006 ◽  
Vol 21 (1) ◽  
pp. 70-80 ◽  
Author(s):  
A. Carin ◽  
J.-M. Haudin ◽  
M. Vincent ◽  
B. Monasse ◽  
G. Bellet ◽  
...  
Keyword(s):  
External Calibration ◽  
Tube Extrusion

External Calibration in PA12 Tube Extrusion

2006 ◽  
Vol 21 (1) ◽  
pp. 70-80
Author(s):  
A. Carin ◽  
J.-M. Haudin ◽  
M. Vincent ◽  
B. Monasse ◽  
G. Bellet ◽  
...  
Keyword(s):  
External Calibration ◽  
Tube Extrusion

TEM Sample Prep Tool Matching—DualBeam FIB Cut Look and Measure Monitoring for Process Control and Development in a 300 mm IC Fab

2016 ◽  
Author(s):  
Jangbae Jeon
Keyword(s):  
Process Control ◽  
Sample Preparation ◽  
Continuous Improvement ◽  
Process Time ◽  
Operational Monitoring ◽  
Thickness Control ◽  
Running Time ◽  
End Products ◽  
Novel Method

Abstract This work presents a novel method of continuous improvement for faster, better and cheaper TEM sample preparation using Cut Look and Measure (CLM). The improvement of the process is executed by operational monitoring of daily beam conditions, end products, bulk thickness control, recipe usage and tool running time. This process produces a consequent decrease in rework rate and process time. In addition, it also increases throughput with better quality TEM samples.

Response modulation of PdNi nano-film hydrogen sensors by thickness control

2021 ◽  
pp. 150064
Author(s):  
Jiawei Tian ◽  
Hongchuan Jiang ◽  
Xinwu Deng ◽  
Xiaohui Zhao ◽  
Jiayue Tian ◽  
...  
Keyword(s):  
Response Modulation ◽  
Hydrogen Sensors ◽  
Thickness Control

High-Accuracy Plate Thickness Control

1981 ◽  
Vol 14 (2) ◽  
pp. 2507-2514
Author(s):  
M. Saito ◽  
S. Tanimoto ◽  
H. Tsukamoto ◽  
Y. Naba
Keyword(s):  
Plate Thickness ◽  
High Accuracy ◽  
Thickness Control

Influence of Heating Models on Necking Deformation during Tube Extrusion Process

2011 ◽  
Vol 189-193 ◽  
pp. 1778-1781 ◽  
Author(s):  
Gui Hua Liu ◽  
Yong Qiang Guo ◽  
Zhi Jiang
Keyword(s):  
Temperature Gradient ◽  
Material Flow ◽  
Extrusion Process ◽  
Work Piece ◽  
Tube Extrusion ◽  
Deformation Parameters ◽  
Flow Features ◽  
Extrusion Forming ◽  
3D Software ◽  
Deform 3D

By using Deform-3D software, the necking extrusion forming processes of integer trailer axle with two different heating means which are Uniform Heating (UH) method and Partly Heating (PH) method with temperature gradient are simulated. The influence of deformation parameters such as friction factor, necking coefficient, different temperature distribution of work-piece on the material flow features, stress and strain field, loading force and deformation process are analyzed in detail. According to the numerical simulation results, using PH method with temperature gradient can improve necking deformation during tube extrusion process.

Numerical Analysis on the Extruded Volume and Length Ratios of Backward Tube to Forward Rod in Combined Extrusion Processes

2006 ◽  
Vol 519-521 ◽  
pp. 919-924 ◽  
Author(s):  
B.S. Ham ◽  
J.H. Ok ◽  
Jung Min Seo ◽  
Beong Bok Hwang ◽  
K.H. Min ◽  
...  
Keyword(s):  
Process Parameters ◽  
Material Flow ◽  
Volume Ratio ◽  
Forward Direction ◽  
Extrusion Process ◽  
Forming Load ◽  
Tube Extrusion ◽  
Corner Radius ◽  
Combined Operation ◽  
Simulation Results

This paper is concerned with forward rod extrusion combined simultaneously with backward tube extrusion process in both steady and transient states. The analysis has been conducted in numerical manner by employing a rigid-plastic finite element method. AA 2024 aluminum alloy was selected as a model material for analysis. Among many process parameters, major design factors chosen for analysis include frictional condition, thickness of tube in backward direction, punch corner radius, and die corner radius. The main goal of this study is to investigate the material flow characteristics in combined extrusion process, i.e. forward rod extrusion combined simultaneously with backward tube extrusion process. Simulation results have been summarized in term of relationships between process parameters and extruded length and volume ratios, and between process parameters and force requirements, respectively. The extruded length ratio is defined as the ratio of tube length extruded in backward direction to rod length extruded in forward direction, and the volume ratio as that of extruded volume in backward direction to that in forward direction, respectively. It has been revealed from the simulation results that material flow into both backward and forward directions are mostly influenced by the backward tube thickness, and other process parameters such as die corner radius etc. have little influence on the volume ratio particularly in steady state of combined extrusion process. The pressure distributions along the tool-workpiece interface have been also analyzed such that the pressure exerted on die is not so significant in this particular process such as combined operation process. Comparisons between multi-stage forming process in sequence operation and one stage combined operation have been also made in terms of forming load and pressure exerted on die. The simulation results shows that the combined extrusion process has the greatest advantage of lower forming load comparing to that in sequence operation.

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