scholarly journals Final report to USAMP on the use of EBPVD in the light metal die casting industry

1996 ◽  
Author(s):  
G.M. Heestand
Alloy Digest ◽  
1958 ◽  
Vol 7 (1) ◽  

Abstract MAGNESIUM AZ91B is a standard magnesium die casting alloy patterned for the needs of the commercial casting industry. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, machining, and surface treatment. Filing Code: Mg-36. Producer or source: Apex Smelting Company.


Author(s):  
S. Thulasiram ◽  
N. Suthanthira Vanitha ◽  
M. Rajendiran ◽  
N. Kavitha

2006 ◽  
Vol 7 (3) ◽  
pp. 236-248 ◽  
Author(s):  
J. Madan ◽  
P. V. M. Rao ◽  
T. K. Kundra

Determining parting direction and parting line for die-cast parts is a nontrivial task that not only depends upon shape and topology of the part, but also on many process related factors. Normally, a die-casting expert decides parting direction and parting line, intuitively taking into account a large number of factors, and this process can be time consuming and cumbersome in many cases. This study addresses automated determination of parting direction and parting line for a die-cast part from part CAD model. The proposed methodology takes STEP file of the part as input for extracting die-casting features, which consists of protrusion or depression regions of the part. These features are classified into those with single, double, or multiple withdrawal directions. Geometric reasoning is used for feature recognition, which includes nested and interacting features. Global visibility instead of local visibility is used for planning withdrawal direction, which makes the decision arrived by present system closer to industrial practice. Parting line is determined based on selected candidate parting direction considering process constraints and priorities. The contribution of this paper is in terms of development of an automated parting direction and parting line determination system, which is more comprehensive and overcomes limitations of the previous work. Results of this system have been validated with those arrived at by experts from the die-casting industry.


2015 ◽  
Vol 825-826 ◽  
pp. 441-448 ◽  
Author(s):  
David Joop ◽  
Simon Heupel ◽  
Christian Schnatterer ◽  
Daniela Zander ◽  
Andreas Bührig-Polaczek

In this study, aluminum sheet metal reinforced magnesium structures have been manufactured by high pressure die casting (HPDC). Selected interfaces of the hybrid structures were analyzed before and after exposure to corrosive environments. The characterization of the as cast bounding surfaces of aluminum sheets and magnesium cast alloys was carried out to quantify the appearance of crevices, which are significantly influencing the extent of the corrosive attack. Depending on the geometrical design of local bonding areas, the observed interface conditions varied from defect-free form closure to crevice widths beyond 35 μm. A minor percentage of the analyzed segments revealed areas of local metallic continuity, detected as intermetallic phases Al3Mg2and Al12Mg17. In order to evaluate acting corrosion mechanisms, hybrid samples featuring the material combinations EN AW 5083 + AZ91 HP and EN AW 6082 + AM50 HP were subjected to immersion tests using 0.1M NaCl solution at a pH of 7.5. The results showed a strong influence by the spread of the potential difference. Alternating corrosion tests (VDA 621-415) were applied to prove effectiveness of cathodic dip coatings (CDP) and wax sealing on standard profile structures, since the uncoated Al-Mg samples sustained severe corrosion damages immediately.


1998 ◽  
Author(s):  
S. Viswanathan ◽  
W. Ren ◽  
K. Luk ◽  
H.G. Brucher

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