scholarly journals Reduction of Gas Porosity in Die Casting by Applying Compression

2007 ◽  
Vol 71 (4) ◽  
pp. 402-406
Author(s):  
Yoshihiko Hangai ◽  
Soichiro Kitahara ◽  
Shigeyasu Amada
Keyword(s):  
2016 ◽  
Vol 54 (2) ◽  
pp. 145-153 ◽  
Author(s):  
Ik Min Park ◽  
Ho Jeong Kang ◽  
Jin Young Park ◽  
Eok Soo Kim ◽  
Pil Hwan Yun
Keyword(s):  

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1805
Author(s):  
Ho-Jung Kang ◽  
Ho-Sung Jang ◽  
Seong-Hyo Oh ◽  
Pil-Hwan Yoon ◽  
Gyu-Heun Lee ◽  
...  

With the rise in the demand for eco-friendly and electric vehicles, welding and heat treatment are becoming very important to meet the necessary weight reduction, complexity, and high functionality of die castings. Pore-free (PF) die casting is an effective process that enables heat treatment and welding due to low gas porosities. Indeed, this process affords castings of low gas porosity, similar to those attained by high-vacuum die casting. In this study, we compared the gas porosities of different castings fabricated by PF die casting using varied injected oxygen amounts. The castings were all subjected to T6 heat treatment and analyzed by computed tomography (CT) to compare their microstructure and mechanical properties before and after T6 heat treatment. The results revealed that with the increasing injected oxygen amount, the gas porosity of the specimens decreased while their mechanical properties increased. In particular, the gas porosity was the lowest at 1.26 L. Moreover, the 1.26 L specimen displayed the best tensile strength, yield strength, and elongation results. Finally, Weibull distribution analysis revealed that the tensile strength and elongation repeatability and reproducibility increased with increasing injected oxygen amount.


Alloy Digest ◽  
1959 ◽  
Vol 8 (1) ◽  

Abstract APEX 39 is an aluminum die casting alloy ingot containing copper and silicon. It has excellent castability and improved machinability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as casting and machining. Filing Code: Al-75. Producer or source: Apex Smelting Company.


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.


Alloy Digest ◽  
1979 ◽  
Vol 28 (12) ◽  

Abstract Copper Alloy No. 878 is a copper-zinc-silicon alloy for die castings. Among the brass die-casting alloys, it has the highest strength, hardness and wear resistance; however, it is the most difficult to machine. It is used where very high requirements must be met for strength and wear resistance. Its many applications include tools, pump impellers, gears and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-386. Producer or source: Copper alloy producers.


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