The influence that a zirconium additive has on the strength and electrical resistance of cold-rolled aluminum sheets

2009 ◽  
Vol 50 (4) ◽  
pp. 357-362 ◽  
Author(s):  
N. A. Belov ◽  
A. N. Alabin ◽  
A. Yu. Prokhorov
Keyword(s):  
Electrical Resistance ◽  
Aluminum Sheets ◽  
Rolled Aluminum ◽  
Cold Rolled ◽  
Zirconium Additive

scholarly journals Local Annealing of Cold Rolled Aluminum Sheets by LASER Treatment

2019 ◽  
Vol 4 (1) ◽  
pp. 21-26
Author(s):  
Tamás Bubonyi ◽  
Zsuzsanna Bánóczy ◽  
Péter Barkóczy ◽  
Gábor Buza
Keyword(s):  
Material Processing ◽  
Laser Treatment ◽  
Laser Annealing ◽  
Recrystallization Process ◽  
Typical Application ◽  
Processing Technologies ◽  
Aluminum Sheets ◽  
Rolled Aluminum ◽  
Cold Rolled ◽  
Further Development

LASER treatment widely used in material processing technologies. The annealing is not the typical application of the LASER treatment, but this is possible to apply in case of cold deformed metals. In the article a cold rolled EN AW 8006 aluminum sheet is annealed by LASER treatment. The microstructure of the annealed sheets is observed by optical microscopy. An existing cellular automata simulation of recrystallization process is modified to study the LASER annealing. The observed microstructure and the simulated results are compared to determine the further development of the developed automaton.

Design and Implementation of the Cold-Rolled Aluminum Plate Surface On-Line Defect Detection System

2013 ◽  
Vol 712-715 ◽  
pp. 2323-2326
Author(s):  
Xing Guang Qi ◽  
Hai Lun Zhang ◽  
Xiao Ting Li
Keyword(s):  
High Speed ◽  
Surface Defects ◽  
Detection System ◽  
Aluminum Plate ◽  
Gigabit Ethernet ◽  
Accurate Detection ◽  
High Processing Speed ◽  
Rolled Aluminum ◽  
On Line ◽  
Cold Rolled

This paper presents an on-line surface defects detection system based on machine vision, which has high speed architecture and can perform high accurate detection for cold-rolled aluminum plate. The system consists of high speed camera and industrial personal computer (IPC) array which connected through Gigabit Ethernet, achieved seamless detection by redundant control. In order to acquire high processing speed, single IPC as processor receives from and deals with only one or two cameras' image. Experimental results show that the system with high accurate detection capability can satisfy the requirement of real time detection and find out the defects on the production line effectively.

Residual Stress Distribution through Thickness in Cold-Rolled Aluminum Sheet

2014 ◽  
Vol 622-623 ◽  
pp. 1000-1007 ◽  
Author(s):  
Nobuyuki Hattori ◽  
Ryo Matsumoto ◽  
Hiroshi Utsunomiya
Keyword(s):  
Residual Stress ◽  
Friction Coefficient ◽  
Stress Distribution ◽  
Aspect Ratio ◽  
Rolling Direction ◽  
Contact Length ◽  
Residual Stress Distribution ◽  
Aluminum Sheet ◽  
Rolled Aluminum ◽  
Cold Rolled

Distribution of residual stress through the thickness of a cold-rolled aluminum sheet is analyzed by the elastic-plastic finite element method under plane strain condition. Single-pass rolling of 2mm-thick aluminum sheet is considered. Influences of roll diameterD, reduction in thicknessr, and friction coefficientμare investigated. When the friction is low (μ= 0.1 and 0.2), and the case with smaller rolls (D= 130 mm) and low reduction (r= 5%), the residual stress in the rolling direction is compressive at surface and tensile around the layer quarter deep from the surface. While in the case with larger rolls (D= 310 mm) and high reduction (r= 30%), the stress is tensile at surface and the stress decreases to compressive with increasing depth from surface. In other words, with low friction, the residual stress distribution strongly depends on the aspect ratio (contact length / mean thickness) of the roll bite. On the other hand, when the friction coefficient is high (μ= 0.4), the residual stress is compressive at surface regardless of roll diameter and reduction. It means that the friction makes the residual stress at surface more compressive. It is found that the relationship between the residual stress at surface and the aspect ratio is almost linear, and that the slope depends on the friction coefficient.

Analysis of Stripe Defects on the Cold Rolled Aluminum Strip Surface

2018 ◽  
pp. 667-672
Author(s):  
Yan Li ◽  
Lei Xia ◽  
Yiqing Chen ◽  
Peng Gao ◽  
Bin Zhong ◽  
...  
Keyword(s):  
Strip Surface ◽  
Aluminum Strip ◽  
Rolled Aluminum ◽  
Cold Rolled

Static Recrystallization in Aluminum/Graphene Composites

2021 ◽  
Vol 1016 ◽  
pp. 1636-1641
Author(s):  
Xiao Dong Wu ◽  
Xiao Li Liu ◽  
Ling Fei Cao ◽  
Guang Jie Huang
Keyword(s):  
Annealing Temperature ◽  
Static Recrystallization ◽  
Recrystallization Behavior ◽  
High Annealing Temperature ◽  
Graphene Composite ◽  
Pinning Effect ◽  
High Annealing ◽  
Rolled Aluminum ◽  
Strong Pinning ◽  
Cold Rolled

The aim of this work was to analyze the recrystallization behavior of cold rolled Aluminum/graphene composites during annealing. The Aluminum/graphene composite was cold rolled firstly, and then annealed at different temperature (250°C, 300°C, 350°C, 400°C) and for various time (1 h, 2 h, 8 h, 32 h). Full recrystallization did not occur until the annealing temperature was above 300 °C. With annealing temperature increasing from 250 to 300°C, the hardness of the composites decreased from 49.6 to 27.6 HV. Grain growth were not observed at high annealing temperature and longer annealing time, which suggested that Graphene has strong pinning effect on the grain boundary of Aluminum.

scholarly journals Effects of iron silicon on ears in deep drawing of rolled aluminum sheets

1968 ◽  
Vol 18 (2) ◽  
pp. 106-113 ◽  
Author(s):  
Tsuneo TAKAHASHI ◽  
Osamu NAKAMURA ◽  
Masaoki HASHIMOTO
Keyword(s):  
Deep Drawing ◽  
Iron Silicon ◽  
Aluminum Sheets ◽  
Rolled Aluminum

Research on Key Technology of Cold-Rolled Aluminum Plate Surface Defect Detection System

2013 ◽  
Vol 433-435 ◽  
pp. 915-918 ◽  
Author(s):  
Hai Lun Zhang ◽  
Xing Guang Qi ◽  
Xiao Ting Li
Keyword(s):  
Defect Detection ◽  
Surface Defect ◽  
Detection System ◽  
Aluminum Plate ◽  
Aluminum Surface ◽  
Image Processing Algorithm ◽  
Key Technologies ◽  
Rolled Aluminum ◽  
Surface Defect Detection ◽  
Cold Rolled

This paper presents the research of several key technologies during the implementation of cold-rolling aluminum surface defect detection system, including the difficulty of achieving these key technologies and the improvement of image processing algorithm. Through the installation and commissioning on actual production line, summarize and analyze the requirements of the hardware and software design for highly reflective aluminum plate, to achieve the control of product quality at present.

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