scholarly journals Research on Multipass Hot Spinning Process Technology of AZ80 Magnesium Alloy Shell

2019 ◽  
Vol 2019 ◽  
pp. 1-16
Author(s):  
Wei Liang ◽  
Lin Guan ◽  
Qiongying Lv ◽  
Zhigang Xing
Keyword(s):  
Magnesium Alloy ◽  
Process Parameters ◽  
Simulation Analysis ◽  
Preliminary Test ◽  
Process Technology ◽  
Az80 Magnesium Alloy ◽  
Spinning Process ◽  
Temperature Parameter ◽  
Technical Specifications ◽  
Hot Spinning Process

Combined with finite element numerical simulation analysis, the hot-spin forming technology of cylindrical AZ80 magnesium alloy parts was studied in the paper. The multipass hot-spin forming of magnesium alloy shell parts was simulated by the ABAQUS software to analyze the stress and strain distribution and change during spinning for the preliminary test process parameters in the magnesium alloy spinning test. Then, the process parameters were optimized during the hot spinning test, especially the matching relationship between temperature parameter and thinning rate parameter, and the hot spinning magnesium alloy shell parts with the expected technical specifications were finished.

scholarly journals Study on optimization of thermal spinning process of accumulator shell

2020 ◽  
Vol 21 (4) ◽  
pp. 402
Author(s):  
Bin Li ◽  
Yunan Li ◽  
Peihao Zhu ◽  
Wenpeng Ma ◽  
Yinhong Xiao ◽  
...  
Keyword(s):  
Response Surface Model ◽  
Spindle Speed ◽  
Surface Model ◽  
Multi Objective Optimization ◽  
Process Technology ◽  
Element Simulation ◽  
Maximum Wall Thickness ◽  
Spinning Process ◽  
Hot Spinning Process ◽  
Central Composite

In view of the shortcomings of the existing hot spinning process technology of the accumulator shell, a method for optimizing the multi-spinning process parameters is proposed. The Johnson-Cook constitutive model of the accumulator shell material – 34CrMo4 alloy steel − was established with its parameters obtained experimentally. The finite element simulation was carried out for the hot spinning and closing process. Based on which, three parameters with the greatest influence on the spinning formation were studied: spinning temperature, spindle speed and friction coefficient. Combined with the central composite test, the response surface model and the mapping relationship between the three parameters and the maximum mises stress as well as the maximum wall thickness increment of the shell were established. The Pareto optimized solution set was obtained through multi-objective optimization. Under the condition of not affecting product quality, the optimized solution with low spinning temperature and high spindle speed is selected to reduce energy loss and improve work efficiency. The results indicate that the optimized process is experimentally verified to reduce the process temperature by nearly 30 °C, and the efficiency is increased by 25%.

The Analysis of Tube Spinning Process Parameters on Workpiece Defects

2011 ◽  
Vol 295-297 ◽  
pp. 1656-1659 ◽  
Author(s):  
Han Dong Zhao ◽  
Hua Zhang ◽  
Chong Yang Zhao
Keyword(s):  
Process Parameters ◽  
Metal Forming ◽  
Maximum Stress ◽  
Simulation Analysis ◽  
Maximum Temperature ◽  
Tube Spinning ◽  
Stress Maximum ◽  
Spinning Process

The metal forming software Simufact is used to simulate tube spinning process. Different process parametes are received as result of simulation analysis, such as the maximum stress, maximum temperature, the amount of uplift and aperture expansion, and the method has been proposed to eliminate the defects.

Mechanical Properties of Bars Produced by Hot Extrusion of Magnesium Shavings

2019 ◽  
Vol 822 ◽  
pp. 185-192
Author(s):  
Maxim Yu. Zamozdra ◽  
Julija S. Karzina ◽  
Anna Perminova
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Process Parameters ◽  
Hot Extrusion ◽  
Practical Application ◽  
Compressive Properties ◽  
Deformation Degree ◽  
Influence Of Process Parameters ◽  
Az80 Magnesium Alloy

This article describes the practical application of hot extrusion for compaction of magnesium shavings in semi-finished products and the study of the influence of process parameters on the mechanical properties of the obtained MA5 (AZ80) magnesium alloy bars. Production of bars was carried out at different heating temperatures and plastic deformation degree to find technology provide the best combination of tensile and compressive properties. The resulting bars are somewhat higher in strength characteristics than the strength of deformed cast bars made from MA5 alloy, however, they are significantly lower in ductility.

A Preliminary Study of Anodization and Electroless Ni–P Plating on AZ80 Magnesium Alloy

2011 ◽  
Vol 299-300 ◽  
pp. 663-666 ◽  
Author(s):  
Ping Shi ◽  
Xue Dong Han
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Weight Ratio ◽  
High Strength ◽  
Surface Modifications ◽  
Atomic Ratio ◽  
Az80 Magnesium Alloy ◽  
Micro Arc Oxidation ◽  
Preliminary Study ◽  
Electroless Ni

Magnesium alloys are being used as structural components in industry because of their high strength to weight ratio. But their high electrochemical activity and poor corrosion resistance limited their applications. Therefore, surface modifications are needed for protection purpose. This paper studied the anodic micro-arc oxidation and electroless Ni-P plating surface modifications on AZ80 magnesium alloy. The SEM, XRD and EDS were used to characterize the surface coating. It shows that a micro-porous MgO layer with the pores size 5 – 20 μm was fabricated on the bare magnesium alloy. The nodule Ni-P deposition could be prepared on the out layer of MgO with Ni/P atomic ratio being 1.4. The pores in MgO layer could be sealed by the following Ni-P deposition. Therefore the corrosion resistance of the magnesium alloy could be further improved.

scholarly journals Microstructure Evolution of AZ80 Magnesium Alloy during Multi-Directional Forging Process

2014 ◽  
Vol 55 (2) ◽  
pp. 270-274 ◽  
Author(s):  
Qingfeng Zhu ◽  
Lei Li ◽  
Zhiqiang Zhang ◽  
Zhihao Zhao ◽  
Yubo Zuo ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Forging Process ◽  
Az80 Magnesium Alloy
Sign in / Sign up

Export Citation Format

Share Document