scholarly journals EFFECT OF ALUMINUM CONTENT ON THE HARDNESS AND MACHINABILITY OF BRASS ALLOY USED IN OXYGEN CYLINDER VALVE

2021 ◽  
Vol 21 (3) ◽  
pp. 213-220
Author(s):  
Hassanein Ibraheem Khalaf
Keyword(s):  
Aluminum Content ◽  
Main Type ◽  
Die Casting ◽  
Brass Alloy ◽  
Casting Mold ◽  
High Consumption

There is high consumption of oxygen cylinder valves due to incorrect application of valves, therefore, this research will study the possibility to modify Brass alloy that used to produce cylinder valves and reduce their erosion that happens under the use of valve. The main type of brass that used to make cylinder valve is CW713R which contained aluminum with percentage of 1.3-2.3% with hardness of 174 HV. Therefore, the effect of aluminum element on the properties of brass alloy will study to find the best and the optimum percentages that can be added to improve the hardness and machinability of cylinder valve. Brass scrap was melted using oil fire furnace and aluminum element was added before it cast. Then, the melting liquid was poured on steel die casting mold. The result shows that the hardness Brass cylinder valve was increased by increasing the percentage of aluminum element. It is raised from 206 to 605 HV. But when the percentage of aluminum reached 10 % the Brass material becomes brittle and difficult to machine. The best percentage of aluminum that can be added to brass alloy lies in the range of 2.5 – 5%.

Computer Simulation of Filling Process and Temperature Distribution of Oil Pump Cover in Solidification Process

2013 ◽  
Vol 423-426 ◽  
pp. 1894-1897
Author(s):  
Han Wu Liu ◽  
Lian Dong Huang ◽  
Shun Qin Fan ◽  
Bo Hu
Keyword(s):  
Wall Thickness ◽  
Thermal Equilibrium ◽  
Cooling System ◽  
Die Casting ◽  
Solidification Process ◽  
Equilibrium Temperature ◽  
Forming Process ◽  
Element Analysis ◽  
Casting Mold ◽  
Oil Pump

Oil pump cover, as a part of the oil pump, is generally formed by adopting aluminum die casting molding, and required for good internal and external quality. In order to improve the oil pump cover forming quality, the paper first simulates the thermal equilibrium of die-casting mold in the forming process by finite element analysis, and obtains the temperature curves when mold works for 10 consecutive cycles, and determines that the thermal equilibrium temperature of die-casting mold is 260 °C. And then, based on the simulation results of filling and solidification in the forming process by ProCAST software, the shrinkage and cavity appear in the larger wall thickness of the casting. Meanwhile, by simulating the die-casting processes of the oil pump at different pouring temperatures, there are the least of shrinkage and cavity when the pouring temperature setting 640 °C. The results show that: it can take some methods to achieve the progressive solidification, and can reduce or eliminate the possible shrinkage and cavity, such as shortening the distance between sprue, runner and inner runner and die casting to reduce the casting heat loss, or adding cooling system to accelerate the cooling rate in the larger wall thickness of the casting. This analysis provides theoretical basis for the actual casting production of oil pump covers.

Automatic four-cavity die-casting mold for pressing smooth bushes

1964 ◽  
Vol 2 (3) ◽  
pp. 251-255
Author(s):  
S. G. Zbarazskii ◽  
I. D. Radomysei'skii
Keyword(s):  
Die Casting ◽  
Casting Mold

OS0605 In-situ Observation of Flow Phenomena Occurring in Die-Casting Mold

2016 ◽  
Vol 2016.22 (0) ◽  
pp. _OS0605-1_-_OS0605-2_
Author(s):  
Yuta SUNAMI ◽  
Masayuki OCHIAI ◽  
Hiromu HASHIMOTO
Keyword(s):  
Die Casting ◽  
In Situ Observation ◽  
Casting Mold ◽  
Flow Phenomena

scholarly journals Welding Rod for Rebuilding of Die Casting Mold ‘DHW’

Materia Japan ◽  
2015 ◽  
Vol 54 (2) ◽  
pp. 72-74
Author(s):  
Naoki Umemori ◽  
Tetsuya Masuda ◽  
Hirotsugu Horio
Keyword(s):  
Die Casting ◽  
Casting Mold

scholarly journals ^|^ldquo;DHW^|^rdquo; Welding Rod for Rebuilding of Die Casting Mold

Materia Japan ◽  
2014 ◽  
Vol 53 (12) ◽  
pp. 625-627
Author(s):  
Takayuki Shimizu ◽  
Naoki Umemori ◽  
Tetsuya Masuda ◽  
Hirotsugu Horio
Keyword(s):  
Die Casting ◽  
Casting Mold

scholarly journals Analysis of CMT weld Clads for High-pressure die Casting Mold Restoration

2019 ◽  
Vol 22 (4) ◽  
pp. 32-42
Author(s):  
Janette Brezinová ◽  
Miroslav Džupon ◽  
Marek Vojtko ◽  
Viktor Puchý ◽  
Ondrej Milkovič ◽  
...  
Keyword(s):  
High Pressure ◽  
Die Casting ◽  
Casting Mold ◽  
High Pressure Die Casting ◽  
Pressure Die Casting

scholarly journals THERMAL CONTROL OF A STEERING HOUSING DIE CASTING MOLD

2012 ◽  
Vol XXI (XI), 2012/2 (2) ◽  
Author(s):  
Solovastru Ioan-Cornel ◽  
Rusu Tiberiu ◽  
Peti Ferencz ◽  
Sárossy Attila
Keyword(s):  
Die Casting ◽  
Thermal Control ◽  
Casting Mold

ZA-8

Alloy Digest ◽  
1990 ◽  
Vol 39 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Aluminum Content ◽  
Die Casting ◽  
Casting Alloy ◽  
Die Cast ◽  
The Family ◽  
Aluminum Smelting ◽  
Content Alloy

Abstract ZA-8 is a hypereutectic zinc-aluminum,highperformance die casting alloy. It is one of a family of three ZA Alloys which can be economically die cast with properties surpassing conventional zinc or aluminum alloys. It is the lowest aluminum content alloy of the family and it has the lowest melting point and casting temperature range. 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 forming, machining, and surface treatment. Filing Code: Zn-48. Producer or source: Aluminum Smelting and Refining Company Inc.. See also Alloy Digest Zn-35, revised October 1991.

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