Automatic Gauge Control under Laterally Asymmetric Rolling Conditions Combined with Feedforward

2017 ◽  
Vol 53 (3) ◽  
pp. 2560-2568 ◽  
Author(s):  
Katharina Prinz ◽  
Andreas Steinboeck ◽  
Martin Muller ◽  
Andreas Ettl ◽  
Andreas Kugi
Keyword(s):  
Asymmetric Rolling ◽  
Automatic Gauge Control

Automatic gauge control under laterally asymmetric rolling conditions combined with feedforward

2016 ◽  
Author(s):  
Katharina Prinz ◽  
Andreas Steinboeck ◽  
Martin Muller ◽  
Andreas Ettl ◽  
Andreas Kugi
Keyword(s):  
Asymmetric Rolling ◽  
Automatic Gauge Control

6xxx Series Al Alloy Sheets with High Formability Produced by Twin-roll Strip Casting and Asymmetric Rolling

2012 ◽  
Vol 50 (7) ◽  
pp. 503-509 ◽  
Author(s):  
Jae-Chul Lee ◽  
Hong-Kyu Kim ◽  
Jae-Hyung Cho ◽  
Hyoung-Wook Kim
Keyword(s):  
Strip Casting ◽  
Al Alloy ◽  
Asymmetric Rolling ◽  
6Xxx Series ◽  
Twin Roll

scholarly journals Parameter identification method of hydraulic automatic gauge control system based on chaotic wolf pack optimization algorithm

AIP Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 055302
Author(s):  
Yong Zhu ◽  
Guangpeng Li ◽  
Shengnan Tang ◽  
Wanlu Jiang ◽  
Zhijian Zheng
Keyword(s):  
Control System ◽  
Parameter Identification ◽  
Optimization Algorithm ◽  
Identification Method ◽  
Automatic Gauge Control

scholarly journals PcrA Helicase and the Mechanism of Asymmetric Rolling Circle DNA Replication

2014 ◽  
Vol 106 (2) ◽  
pp. 72a
Author(s):  
Lesley Southerden ◽  
Claudia Arbore ◽  
Martin Webb
Keyword(s):  
Dna Replication ◽  
Asymmetric Rolling ◽  
Rolling Circle

Asymmetric rolling of thin AA-5182 sheets: Modelling and experiments

2014 ◽  
Vol 603 ◽  
pp. 150-159 ◽  
Author(s):  
Saeed Tamimi ◽  
João P. Correia ◽  
Augusto B. Lopes ◽  
Said Ahzi ◽  
Frederic Barlat ◽  
...  
Keyword(s):  
Asymmetric Rolling

Texture Control of Aluminum and Magnesium Alloys by the Symmetric/Asymmetric Combination Rolling Process

2011 ◽  
Vol 702-703 ◽  
pp. 68-75 ◽  
Author(s):  
Hirofumi Inoue
Keyword(s):  
Rolling Direction ◽  
Solution Treatment ◽  
Rolling Process ◽  
Warm Rolling ◽  
Fiber Texture ◽  
Drawing Ratio ◽  
Asymmetric Rolling ◽  
Automotive Body ◽  
Solution Treated ◽  
Aluminum And Magnesium Alloys

In order to develop favorable textures for deep drawing of Al-Mg-Si and Mg-Al-Zn alloys that are promising as automotive body panels, we have adopted the symmetric/asymmetric combination rolling (SACR) process consisting of conventional symmetric rolling and subsequent asymmetric rolling at relatively low reduction. The combination of symmetric cold rolling and asymmetric warm rolling for AA6022 sheets leads to the formation of “TD-rotated β-fiber texture”, resulting in the evolution of {111} recrystallization texture after solution treatment at a high temperature. The SACR processed and solution-treated sheets show a high average r-value with small in-plane anisotropy, and consequently the limiting drawing ratio increases significantly, compared to that of the cold-rolled and solution-treated sheets. In the case of AZ31 magnesium alloy, the SACR process by hot rolling causes the formation of a unique texture, which shows two (0001) poles with tilt angles of 0 and −40 degrees from the normal direction (ND) toward the rolling direction (RD). In addition, subsequent annealing weakens intensity of the double-peak texture, so that the drawability is greatly improved in comparison with that of the conventional warm-rolled sheets with a strong basal texture. At the same time, yield strength decreases to some extent, but the SACR processed and annealed sheets exhibit a good balance of strength and formability due to a mixed texture with basal and tilt components.

scholarly journals The Influence of the Asymmetric Arb Process on the Properties of Al-Mg-Al Multi-Layer Sheets / Wpływ Asymetrii W Procesie Arb Na Właściwości Wielowarstwowych Blach Al-Mg-Al

2015 ◽  
Vol 60 (4) ◽  
pp. 2821-2826 ◽  
Author(s):  
A. Wierzba ◽  
S. Mróz ◽  
P. Szota ◽  
A. Stefanik ◽  
R. Mola
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Tensile Strength ◽  
Rolling Process ◽  
Asymmetry Factor ◽  
Relative Reduction ◽  
Test Results ◽  
Initial Thickness ◽  
Asymmetric Rolling ◽  
Aluminium Layer

The paper presents the results of the experimental study of the three-layer Al-Mg-Al sheets rolling process by the ARB method. The tests carried out were limited to single-pass symmetric and asymmetric rolling processes. An Al-Mg-Al package with an initial thickness of 4 mm (1-2-1 mm) was subjected to the process of rolling with a relative reduction of 50%. To activate the shear band in the strip being deformed, an asymmetry factor of av=2 was applied. From the test results, an increase in the tensile strength of the multi-layer Al-Mg-Al sheets obtained from the asymmetric process was observed. Microhardness tests did not show any significant differences in aluminium layer between respective layers of sheets obtained from the symmetric and the asymmetric process. By contrast, for the magnesium layer, an increase in microhardness from 72 HV to 79 HV could be observed for the asymmetric rolling. The analysis of the produced Al-Mg-Al sheets shows that the good bond between individual layers and grain refinement in the magnesium layer contributed to the obtaining of higher mechanical properties in the multi-layer sheets produced in the asymmetric process compared to the sheets obtained from the symmetric process.

The Development of Short Stress Path Experimental Asymmetric Multifunctional Rolling Mill

2010 ◽  
Vol 145 ◽  
pp. 171-176
Author(s):  
Ze Jun Chen ◽  
Guang Jie Huang ◽  
Jian Jun Min ◽  
Boa Hua Qian
Keyword(s):  
Principal Components ◽  
Rolling Mill ◽  
Stress Path ◽  
Nonferrous Metals ◽  
Asymmetric Rolling ◽  
Roll Speed ◽  
Teaching And Research ◽  
Design And Manufacture ◽  
Design Ideas ◽  
Conventional Rolling

This paper describes the development and design of a novel short stress path rolling mill which is used for teaching and research. The rolling mill can implement the asymmetric rolling by the way of the adjustment of upper roll speed, and also working as conventional rolling when the roll speeds of two rolls are equal. The rolling mill can produce not only the plate and sheet, but also profiles by the roll of different grooves. The rolling mill is appropriate for the rolling of the steels and nonferrous metals. In this paper, the design ideas and main parameters of principal components are presented with respect to the new rolling mill. It can provide references for the design and manufacture of rolling mill of similar functions and structures.

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