scholarly journals Effect of Overflow Geometry and Injection Speed on the Casting Product during the Magnesium Alloy Die-casting Process for Thin-walled Electronic Housing Components

2017 ◽  
Vol 55 (7) ◽  
pp. 515-522
Keyword(s):  
Magnesium Alloy ◽  
Die Casting ◽  
Casting Process ◽  
Injection Speed ◽  
Thin Walled ◽  
Die Casting Process ◽  
Electronic Housing

Development of 2-Cavity Die Casting Process for AM50 Mg Steering Column Lock Housing Module

2006 ◽  
Vol 510-511 ◽  
pp. 334-337
Author(s):  
Shae K. Kim
Keyword(s):  
Magnesium Alloy ◽  
Aluminum Alloys ◽  
Magnesium Alloys ◽  
Weight Reduction ◽  
Die Casting ◽  
Casting Process ◽  
Research Strategy ◽  
Good Choice ◽  
Weight Basis ◽  
Die Casting Process

It is obvious that automotive industry worldwide is predicting significant growth in the use of magnesium alloys for weight reduction to decrease fuel consumption and emission. About a half decade ago, the price of magnesium alloys was more than twice that of aluminum alloys on a weight basis. Currently, magnesium alloys cost about one and a half times that of aluminum alloys on a weight basis, and thus the price of magnesium alloys is the same as or lower than that of aluminum alloys on a per volume basis. However, in considering the performance of magnesium components (not their specific mechanical properties) and recycling aspect of magnesium alloys, it is required to realize niche applications of magnesium alloys, which meet the cost requirement on performance basis and/or offer more than weight reduction. There are many other factors that make magnesium a good choice: component consolidation, improved safety for driver and passengers, and improved noise vibration and harshness (NVH), to name a few. As one of these efforts to adopt magnesium alloys in automotive component, this paper describes the research strategy of cold chamber type 2-cavity die casting of AM50 magnesium alloy for developing the steering column lock housing module with emphasis on cost driving factors and necessities for cost reduction, explaining why AM50 magnesium alloy is chosen with design and die casting process optimization.

Semisolid Die-Casting Process of Mg-20Al-0.8Zn Magnesium Alloy

2011 ◽  
Vol 306-307 ◽  
pp. 539-543
Author(s):  
Feng Yun Yan ◽  
Xiao Feng Huang ◽  
Bo Li ◽  
Ying Ma
Keyword(s):  
Tensile Strength ◽  
Die Casting ◽  
Injection Pressure ◽  
Casting Process ◽  
Elongation Rate ◽  
Isothermal Heat Treatment ◽  
Technological Parameters ◽  
Injection Speed ◽  
Die Casting Process ◽  
Spherical Grains

Based on microstructure evolution of Mg-20Al-0.8Zn magnesium alloys realized by semisolid isothermal heat-treatment (SSIT), we obtained the non-dendrite or spherical grains microstructure under the suitable technological parameters that isothermal temperature is 495 °C and holding time is 120 min. With the help of special experimental equipment, the semisolid die-casting process has been studied and the specimens have been analyzed. The effects of different parameters as injection speed and pressure on tensile strength, elongation rate, hardness, etc have been investigated. The results indicate that tensile strength was improved along with increasing injection speed and pressure. However, excessive speed will involve gas, which formed defects and reduced the mechanical properties. When the injection pressure is 40MPa and injection speed is 4m/s, the tensile strength and elongation rate can reach maximal 220MPa and 5.63% respectively. Its fracture mechanism was intercrystalline cracking.

Study on Pressure Variations in the Mold of Magnesium Alloy Die Castings

2007 ◽  
Vol 353-358 ◽  
pp. 1614-1616
Author(s):  
Yan Gai Liu ◽  
Zhao Hui Huang ◽  
Hao Ding ◽  
Ming Hao Fang ◽  
Shou Mei Xiong
Keyword(s):  
Magnesium Alloy ◽  
Real Time ◽  
Time Pressure ◽  
Die Casting ◽  
Solidification Process ◽  
Casting Process ◽  
Mold Filling ◽  
Die Casting Process ◽  
Die Castings ◽  
Filling And Solidification

High pressure die casting is the most common method in making magnesium alloys for both auto parts and 3C products. Pressure variations in the mold during mold filling and solidification process have direct influences on the quality and properties of die castings. In this paper, a cylinder head cover was produced to experimentally study pressure variations in the mold during magnesium alloy die-casting process in real time for the first time. Pressure varies at different positions in the mold during die casting process. This study indicates that mold filling and solidification process of magnesium alloy die castings can be described by pressure curves obtained by pressure measurement at different test positions in the cavity in real time.

Sign in / Sign up

Export Citation Format

Share Document