scholarly journals Notes on the low pressure metal mold casting

1962 ◽  
Vol 12 (1) ◽  
pp. 1-2
Author(s):  
Takuichi MORINAGA
Keyword(s):  
2018 ◽  
Vol 61 (05) ◽  
pp. 201-203
Author(s):  
Denis Alexandrovich Chemezov ◽  
◽  
Timur Dmitrievich Osipov ◽  
Andrey Vasilyevich Pesenko ◽  
Tatyana Nikolaevna Komarova ◽  
...  
Keyword(s):  

POROS ◽  
2017 ◽  
Vol 14 (1) ◽  
pp. 72 ◽  
Author(s):  
Chris Marvin ◽  
Eddy S Siradj ◽  
Sobron Yamin Lubis

Abstract: Material developments in Indonesia is already very advanced rapidly certainly need high level of violence but has a mass of light. Aluminum should be developed because it possesses a lightweight and available in the land of our country that is rich in agricultural products. As an alternative to strengthen aluminum alloy that is with Si and Mg, as well as the rapid cooling process when smelting. This study was conducted to observe the microstructure and mechanical properties of the raw material of aluminum alloy series 6063. Tests conducted with metal mold, furan resin sand mold, commossa sand mold, the cooling rate of each mold will affect the hardness of the material which can be seen microstructure with microstructural observations. The survey results revealed that the aluminum with a metal mold casting has a hardness of 54 HRB, furan resin sand has a hardness of 40 HRB, sand commossa has a hardness of 33 HRB. Metal mold has a shock force of 0,316 J/mm2, particularly a furan resin sand shock force of 0,265 J/mm2, commossa sand has a shock force of 0.206 J/mm2. Metal mold has a high hardness compared with furan resin sand rated second, while the sand was rated commossa end but increasingly harsh mean tenacity of a material value will increase. According to the test micro structure, the aluminum is brittle, the distance or the distribution of grain will be a meeting or a lot. 


1992 ◽  
Vol 49 (4) ◽  
pp. 182-184
Author(s):  
V. N. Yashin ◽  
M. I. Dol'nikov ◽  
E. F. Solinov ◽  
V. I. Gornostaev ◽  
Yu. V. Orlovskii ◽  
...  

2018 ◽  
Vol 61 (05) ◽  
pp. 132-141
Author(s):  
Denis Alexandrovich Chemezov ◽  
◽  
Lyudmila Vladimirovna Smirnova ◽  
Elena Valentinovna Bogomolova ◽  
◽  
...  
Keyword(s):  

2021 ◽  
Vol 97 ◽  
pp. 19-23
Author(s):  
Hai Nguyen Thanh ◽  
◽  
Tri Pham Huu ◽  
Tung Le Thanh ◽  
Thien Vo Tan ◽  
...  

Metal mold casting is widely used in industry because of higher accuracy than sand casting and lower cost than diecasting. Metal mold casting can yield products with complex shapes and adjustable cooling rate. In this work, designing and fabrication of 20 kHz ultrasonic assisted mold casting using 20Cr steel are studied. Some major components such as motor, heater power, melting chamber are selected and calculated. Model for heating and pouring the ADC 12 alloy is designed. Samples with and without ultrasonic vibration are investigated using 3D laser scan.


2014 ◽  
Vol 217-218 ◽  
pp. 159-165 ◽  
Author(s):  
John L. Jorstad ◽  
Andreas N. Alexandrou ◽  
Evan Mitsoulis

The objective of this presentation is to show and explain why semisolid slurries can fill thin sections at seemingly unlimited flow velocity; the suitability of SSM parts with very thin sections is a characteristic of the process that is often overlooked by the industry. This fact provides a unique opportunity for new advanced applications of the process, not possible by any of the existing metal-mold casting methods.


2012 ◽  
Vol 201-202 ◽  
pp. 1151-1154
Author(s):  
Ji Qiang Li ◽  
Zhong Zhao ◽  
Zhi Xin Jia ◽  
Yun Wei Xu ◽  
Zhi Yuan Liu

Cavity defects of low-pressure lost foam casting (LP-LFC) for magnesium alloy were investigated by using ladder samples and claviform samples.The physical feature of typical cavity defects of LP-LFC for magnesium castings had been tested by optical microscopy and scanning electron microscopy. And the chemical constitution of cavity surface was also tseted by energy spectrometer. The result indicated that the cluster cavity defects were formed with the application of higher vacuum at the metal-mold interface, which caused the liquid-EPS residue in the castings. Some irregular shape cavity defects were caused by slag entrapment or coating slough. These cavity defects could be avoided through reducing pouring temperature, filling velocity and vacuum level, improving the permeability of coating.


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