Computer modelling, simulation of sand mold casting of tooth point for JCB excavator and verification

2021 ◽  
Author(s):  
Muthyam Sagar ◽  
G. S. Reddy ◽  
Md. Hafeez
Keyword(s):  
Computer Modelling ◽  
Sand Mold ◽  
Mold Casting ◽  
Modelling Simulation

Warpage simulation and the experimental verification of an L-plate sand mold casting by using the thermo-elastoplastic FEM code

2010 ◽  
Author(s):  
Kenichi Ohura ◽  
Akitake Makinouchi ◽  
Cristian Teodosiu ◽  
Yutaka Nagai ◽  
Jyuichi Nagse ◽  
...  
Keyword(s):  
Experimental Verification ◽  
Sand Mold ◽  
Mold Casting

scholarly journals STRUKTUR MIKRO DAN SIFAT MEKANIS ALUMINIUM PADUAN SERI 6063 HASIL COR DARI CETAKAN LOGAM, PASIR RESIN FURAN DAN PASIR KOMOSSA

POROS ◽  
2017 ◽  
Vol 14 (1) ◽  
pp. 72 ◽  
Author(s):  
Chris Marvin ◽  
Eddy S Siradj ◽  
Sobron Yamin Lubis
Keyword(s):  
Aluminum Alloy ◽  
High Hardness ◽  
Raw Material ◽  
Sand Mold ◽  
Metal Mold ◽  
Alloy Series ◽  
Mold Casting ◽  
Furan Resin ◽  
Survey Results ◽  
High Level

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. 

Effect of Different Gating Systems and Sand Mold Binder on the Cast-Quality of Bicycle Frame Produced through Sand Casting Method

2020 ◽  
Vol 402 ◽  
pp. 100-107
Author(s):  
Akhyar ◽  
Husaini ◽  
Masri Ali ◽  
Nurdin Ali ◽  
Farhan Ahmad
Keyword(s):  
Water Glass ◽  
Casting Process ◽  
Sand Mold ◽  
Casting Defects ◽  
Casting Method ◽  
Mold Casting ◽  
Furan Resin ◽  
Bicycle Frame ◽  
The Impact

The bicycle frame produced through the metal casting process by recycling aluminum alloys can be an environmentally friendly alternative solution. Mold types and gating systems used generally affects the quality of the casting product. In this experiment, the effect of gating number and riser type variations (for sand binder) observed on casting defects, hardness, and impact value. Subsequently, chemical composition and microstructure of recycled aluminum metal from bicycle frames produced through sand mold casting are also evaluated. Three types of risers are bentonite, water glass, and furan resin. The results indicate that mold with two gating system has a low porosity as casting defects. The cast-bike frame produced using furan resin reaches the highest hardness value of 46 HRB compared to water glass and bentonite as the binder of sand-molds. The impact test observes 3.9 J carried out by the ASTM E23 sample at room temperature.

Microstructure Observation of AM60 Magnesium Alloy Solidified by Rapidly Quench

2011 ◽  
Vol 409 ◽  
pp. 339-342 ◽  
Author(s):  
Tatsuya Maekawa ◽  
Mitsuaki Furui ◽  
Susumu Ikeno ◽  
Tomoyasu Yamaguchi ◽  
Seiji Saikawa
Keyword(s):  
Cooling Rate ◽  
Volume Fraction ◽  
Solidus Temperature ◽  
Sand Mold ◽  
Slow Cooling ◽  
Microstructure Observation ◽  
Β Phase ◽  
Mold Casting ◽  
Contradictory Behavior ◽  
Permanent Mold Castings

In solidification theory, with a slow cooling rate such as sand mold casting, it is easy to segregate the solute aluminum near the grain boundary of primary α-Mg phase under the solidification in Mg-Al system alloys. Thus, volume fraction of none-equilibrium crystallized β-Mg17Al12 phase showed the higher value compared with metal mold casting with faster cooling rate. However, in our microstructure observation results, the volume fraction of β phase in permanent mold castings was larger than that of sand mold castings. In the present study, these contradictory behavior was investigated by observation of as-solidified microstructure obtained from rapid cooling castings at the just below the solidus temperature of 723, 773 and 823K.

Simulation of the ice accretion process on a transmission line cable with differential twisting

2007 ◽  
Vol 34 (2) ◽  
pp. 147-155 ◽  
Author(s):  
Ping Fu ◽  
Masoud Farzaneh
Keyword(s):  
Transmission Line ◽  
Computer Modelling ◽  
Air Pressure ◽  
Ice Accretion ◽  
Validity And Reliability ◽  
Overhead Transmission Line ◽  
Accretion Process ◽  
Ice Loads ◽  
Modelling Methods ◽  
Modelling Simulation

Cable rotation caused by ice accretion was specifically modelled and simulated for this paper. Both ice loads and wind-on-ice loads were taken into account during the modelling, and the quantity for the wind-on-ice loads was obtained by integrating air pressure and air shear along the airflow boundary. Air pressure and air shear were both evaluated through time-dependent airflow computations. Two types of overhead transmission line cables, namely, the Bersimis cable and an overhead ground wire, were examined using the new model, and a number of conclusions were drawn. The validity and reliability of the modelling methods were confirmed by comparing the simulation results with those obtained from experimental measurements.Key words: airflow computation, cable rotation, ice accretion, computer modelling, simulation.

NDT Qualification Achievements for WWER Type RPV and Piping Systems

2009 ◽  
Author(s):  
Ladislav Horacek
Keyword(s):  
Phased Array ◽  
Computer Modelling ◽  
Circumferential Welds ◽  
Lessons Learnt ◽  
Piping Systems ◽  
Surge Line ◽  
Simulation Results ◽  
Pulse Echo ◽  
Longitudinal Welds ◽  
Modelling Simulation

The technical publication contains the latest NDT qualification achievements in the following inspection areas of WWER type RPVs and piping systems: 1. TOFD examination of WWER 440 and WWER 1000 type RPV butt welds, 2. Pulse-echo examinations of longitudinal austenitic welds of elbows and 3. Phased array examinations of circumferential welds and longitudinal elbow welds of different piping systems. The progress in the TOFD RPV application is especially in high level involvement of computer modelling simulation by CIVA s/w (CEA, France). The level of compliance of TOFD examination and TOFD simulation results was confirmed for many defects in the 1:1 large scale test assemblies [1]. The progress and lessons learnt from pulse-echo examinations of longitudinal austenitic welds of elbows is related to Leak Before Break Concept Application for Primary piping and Pressurizer surge line piping at ANPP in Metsamor (Armenia) where there were increased requirements on in-service inspection including NDT qualification of pressurizer surge line longitudinal welds on elbows and primary piping longitudinal welds on elbows under the Main Circulation Pump. The progress in phased array applications on circumferential welds and longitudinal elbow welds of different piping systems is also accompanied by extended computer modelling simulation by CIVA s/w. Several examples of compliance of phased array (PA) examination and PA simulation results are given for many defects in the 1:1 piping weld test assemblies [2]. The paper contains also briefly the scope of the training of Armenian UT inspectors at NRI based on the contract sponsored by IAEA Vienna. Lessons learnt obtained within the UT training of Armenian inspectors coming from NDT qualification training, open and blind trials on available test assemblies are shortly presented, as well.

Microstructure and mechanical properties of Mg–3.0Y–2.5Nd–1.0Gd–xZn–0.5Zr alloys produced by metallic and sand mold casting

2017 ◽  
Vol 32 (16) ◽  
pp. 3191-3201 ◽  
Author(s):  
Haohao Zhang ◽  
Liang Zhang ◽  
Guohua Wu ◽  
Antao Chen ◽  
Wendong Cui ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sand Mold ◽  
Microstructure And Mechanical Properties ◽  
Mold Casting ◽  
Image Position

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