Research on Springback Compensation of Aluminium Alloy Automobile Body Panel

2013 ◽  
Vol 791-793 ◽  
pp. 390-393
Author(s):  
Lei Hu ◽  
Hui Xie ◽  
Xing Xing Hu ◽  
Zhi Hong Pan ◽  
Hao Ming Jiang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Aluminum Alloy ◽  
Aluminium Alloy ◽  
Curved Surface ◽  
Practical Application ◽  
Springback Compensation ◽  
Cycle Simulation ◽  
Automobile Body ◽  
Compensation Principle ◽  
Working Procedure

The performance of the aluminum alloy makes it the most popular lightweight materials for the automobile manufacturers. However, due to the disparity on the crystal structure,it has the higher springback values compared with steel. In order to solve the problem, we put forward a new springback compensation method based on displacement compensation principle and the principle of curved surface fairing design methods. Though full cycle simulation and calculate springback value for each working procedure, then generate the springback compensation surface. The methods practical application effect is good.

Study on the Formability of Aluminium Alloy Sheets at Room and Elevated Temperatures

2016 ◽  
Vol 877 ◽  
pp. 393-399
Author(s):  
Jia Zhou ◽  
Jun Ping Zhang ◽  
Ming Tu Ma
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Elevated Temperature ◽  
Aluminium Alloy ◽  
Aluminium Alloys ◽  
Elevated Temperatures ◽  
Hot Stamping ◽  
Natural Aging ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet

This paper presents the main achievements of a research project aimed at investigating the applicability of the hot stamping technology to non heat treatable aluminium alloys of the 5052 H32 and heat treatable aluminium alloys of the 6016 T4P after six months natural aging. The formability and mechanical properties of 5052 H32 and 6016 T4P aluminum alloy sheets after six months natural aging under different temperature conditions were studied, the processing characteristics and potential of the two aluminium alloy at room and elevated temperature were investigated. The results indicated that the 6016 aluminum alloy sheet exhibit better mechanical properties at room temperature. 5052 H32 aluminum alloy sheet shows better formability at elevated temperature, and it has higher potential to increase formability by raising the temperature.

scholarly journals EXPERIENCE IN THE DEVELOPMENT AND USE OF ALUMINUM ALLOY CASING FOR CONDITIONS OF HIGH CONTENT OF ACID GASES IN FORMATION FLUIDS

2019 ◽  
Vol 121 ◽  
pp. 04013
Author(s):  
Vladimir Sledkov ◽  
Mikhail Gelfgat ◽  
Dmitry Basovich
Keyword(s):  
Aluminum Alloy ◽  
Aluminium Alloy ◽  
Weight Ratio ◽  
High Strength ◽  
Acid Gases ◽  
Construction Costs ◽  
Corrosion Resistant

When selecting a casing material for fields with a high content of H2S and CO2, it is recommended to use specialized corrosion-resistant tubulars with high content of chrome of the Sanicro 29 type. The high cost of the material can be critical for the project economy. A promising approach for these problems elimination could be the application of aluminium alloy casing pipes. They are remain inert to corrosion even if the formation environment is fully saturated with H2S and/or CO2. They are also lightweight, have high strength-to-weight ratio, and thus decrease the existing tensions in the string and reduce well construction costs.

The Research of PWM Controlling Capacitance SVC Based on RB-IGBT

2010 ◽  
Vol 44-47 ◽  
pp. 3970-3975
Author(s):  
Ke Wang ◽  
Bin Chen ◽  
Wen Han Chen ◽  
Hua Xu ◽  
Jia Xin Yuan
Keyword(s):  
Reactive Power ◽  
Electronic Devices ◽  
Reactive Power Compensation ◽  
Power Electronic ◽  
Practical Application ◽  
Advantages And Disadvantages ◽  
Compensation Principle ◽  
New Type

At first, this paper compared the present some advantages and disadvantages of reactive power compensation devices, and analysis the disadvantages of these devices in practical application deficiencies, then put forward a new kind of reactive power compensation principle. With the development of power electronic devices, this paper put forward a new type of reactive power compensation which based on RB-IGBT of SVC mode, synthesize the advantages of domestic reactive power compensation devices at present, and the prospect of application is very good.

scholarly journals Modeling and Optimization of Bidirectional Clamping Forces in Drilling of Stacked Aluminum Alloy Plates

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2866
Author(s):  
Jintong Liu ◽  
Anan Zhao ◽  
Piao Wan ◽  
Huiyue Dong ◽  
Yunbo Bi
Keyword(s):  
Mathematical Model ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Clamping Force ◽  
Practical Application ◽  
Element Simulation ◽  
Theory Of Plates ◽  
Plates And Shells ◽  
The Mathematical Model ◽  
The Relationship

Interlayer burrs formation during drilling of stacked plates is a common problem in the field of aircraft assembly. Burrs elimination requires extra deburring operations which is time-consuming and costly. An effective way to inhibit interlayer burrs is to reduce the interlayer gap by preloading clamping force. In this paper, based on the theory of plates and shells, a mathematical model of interlayer gap with bidirectional clamping forces was established. The relationship between the upper and lower clamping forces was investigated when the interlayer gap reaches zero. The optimization of the bidirectional clamping forces was performed to reduce the degree and non-uniformity of the deflections of the stacked plates. Then, the finite element simulation was conducted to verify the mathematical model. Finally, drilling experiments were carried out on 2024-T3 aluminum alloy stacked plates based on the dual-machine-based automatic drilling and riveting system. The experimental results show that the optimized bidirectional clamping forces can significantly reduce the burr heights. The work in this paper enables us to understand the effect of bidirectional clamping forces on the interlayer gap and paves the way for the practical application.

Orientation distribution analysis in deformed grains

2001 ◽  
Vol 34 (3) ◽  
pp. 280-288 ◽  
Author(s):  
Jean Christophe Glez ◽  
Julian Driver
Keyword(s):  
Statistical Analysis ◽  
Aluminium Alloy ◽  
Orientation Distribution ◽  
Distribution Functions ◽  
Distribution Analysis ◽  
Practical Application ◽  
Orientation Data ◽  
Alloy Crystal ◽  
Orientation Distribution Functions ◽  
Individual Grains

Some improvements are proposed for the statistical analysis of orientation data within individual grains, in particular by allowing for crystallographic symmetries. A method based on quaternions is then presented to characterize orientation spreads including anisotropic effects. Based on this approach, some analyses of disorientation distributions (orientation distribution functions, disorientation noise and the description of sub-boundary disorientation) are reconsidered. The analysis is illustrated by a practical application to the microtextures of a hot deformed aluminium alloy crystal.

scholarly journals Investigation on Double Wire Metal Inert Gas Welding of A7N01-T4 Aluminum Alloy in High-Speed Welding

2019 ◽  
Vol 38 (2019) ◽  
pp. 317-325 ◽  
Author(s):  
Zhicheng Wei ◽  
Rongzheng Xu ◽  
Hui Li ◽  
Yanxi Hou ◽  
Xuming Guo
Keyword(s):  
Crystal Structure ◽  
Aluminum Alloy ◽  
High Speed ◽  
Weld Zone ◽  
Dendritic Structure ◽  
Inert Gas ◽  
Tensile Fracture ◽  
Hardness Profile ◽  
Columnar Crystal ◽  
Metal Inert Gas Welding

AbstractFour-millimeter thick A7N01-T4 aluminum alloy plates were welded by double wire metal inert gas welding (DWMW) in high welding speeds, ranging from 1100 to 1250 mm/min. The results show that a sound joint could be obtained at a high speed of 1200 mm/min using DWMW. The weld zone (WZ) in the joint showed a dendritic structure of equiaxed grains, and in the fusion zone (FZ), the microstructure existed as a fine equiaxed crystal structure about 100 µm in thickness. In the WZ adjacent to the FZ, elongated columnar crystal structure distributed along to the interface, and coarse microstructure in the heat affected zone (HAZ) were found, showing a typical rolling texture. The main precipitates in the WZ were assumed to be Fe-enriched phases, and Mg- and Zn-enriched phases. Tensile fracture generally occurred in the WZ adjacent to the FZ with a decrease in ductility, and it was consistent with the results of the microstructure analysis and hardness profile. The mean ultimate tensile strength and elongation of specimens were 302 MPa and 4.5 %, respectively.

Study on the Ageing Process of the 6xxx Series Aluminum Alloy Wires for Overhead Conductors

2016 ◽  
Vol 877 ◽  
pp. 347-355 ◽  
Author(s):  
Zhi Hao Zhao ◽  
Qing Qiang Chen ◽  
Qing Feng Zhu ◽  
Wen Qiang Liu ◽  
Gao Song Wang
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Continuous Casting ◽  
Aluminium Alloy ◽  
Ageing Time ◽  
Ageing Temperature ◽  
Series Aluminum Alloy ◽  
The Wire ◽  
6Xxx Series ◽  
Lower Tensile Strength

The 6xxx series aluminium alloy wires (with the diameters of 2.84 mm) produced by the continuous drawing and rotary-wheel continuous casting, were directly aged in different conditions. The results show that, when ageing temperature is at 150°C, the tensile strength of the wire firstly decreased from 283 MPa to 265 MPa as the ageing time extended from 0 to 4 hours, and then increased from 265 MPa to 270 MPa as the ageing time extended from 4 to 12 hours, and finally decreased from 270 MPa 263 MPa as the ageing time extended from 12 to 24 hours. The electrical resistively of the wires continued decreases with the ageing time extend from 0 to 24 hours. When the ageing temperature is at 160, 170, 180 and 190 °C, both the tensile strength and the electrical resistively of the wire continuously decreased with the ageing time extended from 0 to 24 hours. When the ageing time was identical, the wires with higher ageing temperature possessed lower tensile strength and electrical resistively.

scholarly journals Effect of Electromagnetic Treatment on Fatigue Resistance of 2011 Aluminum Alloy

2016 ◽  
Vol 07 (03) ◽  
pp. 1650004 ◽  
Author(s):  
M. A. Mohin ◽  
H. Toofanny ◽  
A. Babutskyi ◽  
A. Lewis ◽  
Y. G. Xu
Keyword(s):  
Crystal Structure ◽  
Experimental Study ◽  
Electromagnetic Field ◽  
Aluminum Alloy ◽  
Fatigue Resistance ◽  
Life Extension ◽  
Beneficial Effects ◽  
Electromagnetic Treatment ◽  
Engineering Alloys ◽  
Pulsed Electromagnetic

Beneficial effects of the electromagnetic treatment on fatigue resistance were reported on several engineering alloys. These could be linked to the dislocation activity and the rearrangement of the crystal structure of the material under the electromagnetic field (EMF), resulting in delayed crack initiation. This paper presents an experimental study on the effect of pulsed electromagnetic treatment on the fatigue resistance of 2011 aluminum alloy. Circular cantilever specimens with loads at their ends were tested on rotating fatigue machine SM1090. Fatigue lives of treated and untreated specimens were analyzed and compared systematically. It has been found that the effect of the pulsed electromagnetic treatment on the fatigue resistance is dependent on the intensity of the pulsed EMF and the number of the treatment applied. Clear beneficial effect of the pulsed electromagnetic treatment on the fatigue resistance of the aluminum alloys has been observed, demonstrating a potential new technique to industries for fatigue life extension.

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