Theoretical and experimental research of hammer forging process of RIM from AZ31 magnesium alloy
7
Citation
2
Reference
20
Related Paper
Citation Trend
Keywords:
Hammer
Cite
Abstract The paper presents the results of a theoretical analysis of a new process of hammer forging of a connecting rod and the technology currently used. In the industry at present connecting rods are forged from extruded rods. The new forging technology assumes the use of a workpiece in the form of a cast preform. For the calculations, it has been assumed that the billet material will be a Ø30 × 148 mm rod and a cast preform. Two variants of preforms have been modeled, from which products of the assumed geometry with different degree of strain are obtained. Calculations were made using the finite element method (FEM) in the Deform 3D program. The input material was 2017A aluminum alloy in the form of rods and sand cast preforms. On the basis of the conducted research, it was found that the use of cast preforms reduces material waste by about 80% in relation to the technology of forging from the bar and reduces the energy consumption of the process by about 75%. Both geometrical variants of the forging preforms ensure obtaining a forging with the assumed shape and dimensions, although forging from the forging preform with a smaller degree of strain seems to be a safer variant in terms of the possibility of cracking of the material. This is supported by the lower strain and normalized Cockcroft–Latham integral values.
Hammer
Rod
Cite
Citations (10)
Numerical simulation and experimental studies on metal flow were carried out during the forging process of AZ80 magnesium alloy wheel to evaluate the formahility and to determine the tool radius. Tool radius of R15mm, R20mm and R30mm were used during forging the front lip. Using the properties established based hot compression tests result, the finite element simulations were conducted at various tool radiuses to determine forming behavior of magnesium alloy. The simulation results show that the heavy folding defect resulted from the smaller tool radius of 15mm and 20mm. Improved formability was achieved when tool radius is 30mm. The forging trials were performed at design improvement using designed experimental equipment. The AZ80 magnesium alloy wheel was forged successfully at suitable process parameters. The experimental results were in reasonable agreement with the numerical simulation.
Material Flow
Cite
Citations (3)
Three-dimensional processing maps including strain were built according to the flow stress curves of magnesium alloy AZ31B.The three-dimensional processing maps demonstrate the variations of the efficiency of power dissipation and flow instability domains with temperature,strain rate and strain,through which the most favorite deformation domain-the temperature range of 250~325 ℃ and the strain rate range of 0.1~1 s-1 was obtained.On the basis of these results,the two-stage isothermal forming process(preforming operation without gear shape and finish forging operation) of magnesium alloy spur bevel gear was determined.The hot forging process was simulated by the commercial finite element analysis software MSC.Marc.According to the numerical simulation results,the hot forging experiments of magnesium alloy AZ31B spur bevel gear were successfully conducted.
Bevel gear
Flow stress
Isothermal process
Material Flow
Cite
Citations (0)
The high specific strength of the magnesium alloy makes it a valuable choice for automotive, aerospace and sporting industries, where the weight reduction is a critical consideration in design. However, wrought magnesium alloys offer a poor formability at room temperature and a hot working condition is required for the forming process. This paper studies the application of finite element methods for the simulation of the forging of magnesium alloys. Numerical analysis of the forging process of an automotive magnesium wheel is conducted based on the tested flow curve of AZ80. The effect of friction on the final deformation of the upsetting of magnesium billets is also discussed.
Material Flow
Cite
Citations (0)
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Debin Shan, Nanhai Hao, Yan Lu; Research On Isothermal Precision Forging Processes Of A Magnesium‐Alloy Upper Housing. AIP Conf. Proc. 10 June 2004; 712 (1): 636–641. https://doi.org/10.1063/1.1766598 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Isothermal process
Cite
Citations (2)
According to the forging blank requirements of a magnesium alloy shell,the parameters such as forging temperature,furnace holding time,clamping board temperature of the forging machine,forging time and so on of MB2 magnesium alloy forged on the general forging machine are determined by experiments.They provide some experiences for forging technology planning of this alloy.
Blank
Cite
Citations (0)
A new metal-forming technology of liquid forging for auto wheel of AZ91D magnesium alloy has been proposed in the text. The analysis of forming process has been introduced with the die structure and liquid forging process given. The heat-treatment process has been put forward in order to achieve property requirements of the wheel.
Cite
Citations (0)
The die-forging process and hot forging die design for LY11 Al-alloy brake shell was introduced,and the forging process characteristic of LY11 was investigated;the forging force of the material was analyzed,its heat treatment after forging was described.These are helpful to the forging process and heat treatment of the similar materials.
Cite
Citations (0)
Cite
Citations (4)