scholarly journals Strength Prediction for Pearlitic Lamellar Graphite Iron: Model Validation

Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 684 ◽  
Author(s):  
Vasilios Fourlakidis ◽  
Ilia Belov ◽  
Attila Diószegi
Keyword(s):  
Computational Models ◽  
Casting Process ◽  
Simulation Software ◽  
Strength Prediction ◽  
Simulation Tools ◽  
Iron Castings ◽  
Wide Range ◽  
Lamellar Graphite ◽  
Casting Simulation Software ◽  
Casting Process Simulation

The present work provides validation of the ultimate tensile strength computational models, based on full-scale lamellar graphite iron casting process simulation, against previously obtained experimental data. Microstructure models have been combined with modified Griffith and Hall–Petch equations, and incorporated into casting simulation software, to enable the strength prediction for four pearlitic lamellar cast iron alloys with various carbon contents. The results show that the developed models can be successfully applied within the strength prediction methodology along with the simulation tools, for a wide range of carbon contents and for different solidification rates typical for both thin- and thick-walled complex-shaped iron castings.

Casting Process Solutions Optimization of LFC Forklift Box

2014 ◽  
Vol 571-572 ◽  
pp. 1091-1096
Author(s):  
Guang Sheng Zhang ◽  
Fei Zhang
Keyword(s):  
Orthogonal Experiment ◽  
Casting Process ◽  
Shrinkage Porosity ◽  
Simulation Software ◽  
Technology Program ◽  
Original Process ◽  
Porosity Defects ◽  
Process Solutions ◽  
Technology Solution ◽  
Casting Simulation Software

There are many advantages in producing forklift box through the LFC. However, we found shrinkage porosity defects in the interior of castings through simulating the original process by ProCAST casting simulation software. Therefore, we analyzed the defects and improved the technology program. firstly, increased riser in position of shrinkage, Secondly, changed the filling’s way, lastly, selected the best temperature and vacuum by the orthogonal experiment and determined the best technology solution. we found the shrinkage porosity defects have been removed by the improved process. We found the production consistent with the simulation results through verification. Therefore we verify the accuracy of the ProCAST.

scholarly journals Theoretic and Experimental Studies on the Casting of Large Die-Type Parts Made of Lamellar Graphite Grey Pig Irons by Using the Technology of Polystyrene Moulds Casting from Two Sprue Cups

2012 ◽  
Vol 2012 ◽  
pp. 1-7
Author(s):  
Constantin Marta ◽  
Ioan Ruja ◽  
Cinca Ionel Lupinca ◽  
Monica Rosu
Keyword(s):  
Heat Treatment ◽  
Comparative Analysis ◽  
Research Method ◽  
Experimental Studies ◽  
Casting Process ◽  
Simulation Software ◽  
Casting Defects ◽  
Pig Iron ◽  
Cast Part ◽  
Lamellar Graphite

This paper presents a comparative analysis between the practical results of pig iron die-type part casting and the results reached by simulation. The insert was made of polystyrene, and the casting was downward vertical. As after the part casting and heat treatment cracks were observed in the part, it became necessary to locate and identify these fissures and to establish some measures for eliminating the casting defects and for locating them. The research method was the comparisons of defects identified through verifications, measurements, and metallographic analyses applied to the cast part with the results of some criteria specific to simulation after simulating the casting process. In order to verify the compatibility between reality and simulation, we then simulated the part casting respecting the real conditions in which it was cast. By visualising certain sections of the cast part during solidification, relevant details occur about the possible evolution of defects. The simulation software was AnyCasting, the measurements were done through nondestructive methods.

The Numerical Simulation and Optimization in Squeeze Casting of the Air Conditioning Compressor Front Cover

2013 ◽  
Vol 803 ◽  
pp. 317-320
Author(s):  
Hai Bo Yang ◽  
Guang Liang Wang ◽  
Xue Wen Chen ◽  
De Ying Xu
Keyword(s):  
Air Conditioning ◽  
Squeeze Casting ◽  
Solidification Process ◽  
Casting Process ◽  
Simulation Software ◽  
Front Cover ◽  
Simulation And Optimization ◽  
Shrinkage Defects ◽  
Squeeze Casting Process ◽  
Casting Simulation Software

Using the ProCast casting simulation software to make squeeze casting process simulation and analysis of the solidification process of the air conditioning compressor front cover and predict the location of gas volumes and shrinkage defects in the filling process. When adjusted the process parameters, volumes gas defects were eliminated, but there was still shrinkage occurs in the center. When imposed a secondary pressure on the central part, shrinkage was eliminated.

scholarly journals runBioSimulations: an extensible web application that simulates a wide range of computational modeling frameworks, algorithms, and formats

2021 ◽  
Author(s):  
Bilal Shaikh ◽  
Gnaneswara Marupilla ◽  
Mike Wilson ◽  
Michael L Blinov ◽  
Ion I Moraru ◽  
...  
Keyword(s):  
Computational Modeling ◽  
Predictive Models ◽  
Web Application ◽  
Computational Models ◽  
Multiple Scales ◽  
Community Resources ◽  
Simulation Tools ◽  
Significant Potential ◽  
Wide Range ◽  
Sheer Number

Comprehensive, predictive computational models have significant potential for science, bioengineering, and medicine. One promising way to achieve more predictive models is to combine submodels of multiple subsystems. To capture the multiple scales of biology, these submodels will likely require multiple modeling frameworks and simulation algorithms. Several community resources are already available for working with many of these frameworks and algorithms. However, the variety and sheer number of these resources make it challenging to find and use appropriate tools for each model, especially for novice modelers and experimentalists. To make these resources easier to use, we developed runBioSimulations (https://run.biosimulations.org), a single web application for executing a broad range of models. runBioSimulations leverages community resources, including BioSimulators, a new open registry of simulation tools. These resources currently enable runBioSimulations to execute nine frameworks and 44 algorithms, and they make runBioSimulations extensible to additional frameworks and algorithms. runBioSimulations also provides features for sharing simulations and interactively visualizing their results. We anticipate that runBioSimulations will foster reproducibility, stimulate collaboration, and ultimately facilitate the creation of more predictive models.

Forecast of Shrinkage Porosity of Aluminum Wheel Liquid Die Forging in Solidification Process and Process Optimization

2013 ◽  
Vol 690-693 ◽  
pp. 2236-2239
Author(s):  
Hai Bo Yang ◽  
Xing Sheng Zhao ◽  
Wei Zhong Fan ◽  
Xue Wen Chen ◽  
De Ying Xu
Keyword(s):  
Aluminum Alloy ◽  
Process Optimization ◽  
Solidification Process ◽  
Casting Process ◽  
Shrinkage Porosity ◽  
Simulation Software ◽  
Orthogonal Test ◽  
Casting Simulation ◽  
Casting Technology ◽  
Casting Simulation Software

Using ProCast casting simulation software, the solidification process of the Aluminum Alloy steel casting was simulated according to its scene casting process, and the shrinkage porosity defect was forecasted. Based on the simulation, the casting technology was improved using the orthogonal test. An optimized plan was obtained, which provided a reference for the actual production of the casting.

Foundry Technique Designing of the Nodular Cast Iron Casting

2014 ◽  
Vol 1004-1005 ◽  
pp. 1162-1165
Author(s):  
Bin Feng He
Keyword(s):  
Solidification Process ◽  
Casting Process ◽  
Nodular Cast Iron ◽  
Simulation Software ◽  
Casting Simulation ◽  
Filling Process ◽  
Original Technique ◽  
Correct Determination ◽  
Filling And Solidification ◽  
Casting Simulation Software

The traditional method has been used to the foundry technique for the melt block mobile plate. The pouring position,the parting face and some of the casting parameters were determined, such as the allowance for finish, stripping taper, the rate of shrinkage and soon on. The commercial casting simulation software was introduced into the casting process, the filling and solidification process were calculated by it. The results shown that there are some shrinkage exists in the original technique and the filling process were inordinate. The gating system was optimized and according to the simulation results, the shrinkages in the original technique were eliminated and the filling process is smoothly which could help the designer to make a correct determination.

scholarly journals Al-Si and Al-Si-Mg Cast Alloys Shrinkage Porosity Estimation

2016 ◽  
Vol 16 (1) ◽  
pp. 61-68 ◽  
Author(s):  
S. Samavedam ◽  
S. Sundarrajan
Keyword(s):  
Process Simulation ◽  
Three Dimensional ◽  
Casting Process ◽  
Shrinkage Porosity ◽  
Simulation Software ◽  
Three Dimensional Model ◽  
Cast Alloys ◽  
And Control ◽  
Shrinkage Characteristic ◽  
Casting Process Simulation

Abstract US A356 and US 413 cast aluminium alloys shrinkage characteristic have been discussed in the present study. Specific volume reduction leads to shrinkage in castings and it can be envisaged as a casting defect. Finite difference based casting process simulation software has been used to study the shrinkage characteristic and it is quantified using mathematical formulae. The three dimensional model of the shrinkage defect has been constructed using CAD application software. Shrinkage characteristic has also been quantified through experimental validation studies and compared well with casting process simulation. Shrinkage characteristic study and control is essential for producing defect free castings. Influence of casting shape on the shrinkage characteristic has been studied in this paper.

Numerical Simulation of the Car Oil Pump Support Die Casting

2013 ◽  
Vol 753-755 ◽  
pp. 908-912
Author(s):  
Ran Wei ◽  
Yong Su ◽  
Yun Ji Zhang
Keyword(s):  
Aluminum Alloy ◽  
Die Casting ◽  
Solidification Process ◽  
Casting Process ◽  
Simulation Software ◽  
Solidification Shrinkage ◽  
Oil Pump ◽  
Mould Filling ◽  
Filling And Solidification ◽  
Casting Simulation Software

In this paper, the die-casting processing of aluminum alloy was simulated by casting simulation software. The mould filling and solidification process of aluminum alloy die-casting in different cast temperature and shot velocity were investigated. Aiming at achieving the best casting process, this research gave emphasis on analysis the influence of cast temperature and shot velocity to the process of mould filling, temperature field of casting part during filling and solidification, shrinkage and porosity. To improve the process, increase ingate area, carry on the simulation, and analyze the optimal casting parameters.

Improving Casting Integrity Through the Use of Simulation Software and Advanced Inspection Methods

2012 ◽  
Author(s):  
Ike Sowden ◽  
George Currier
Keyword(s):  
Metal Flow ◽  
Casting Process ◽  
Simulation Software ◽  
Destructive Testing ◽  
Material Density ◽  
Fraction Solid ◽  
Engineering Team ◽  
Trial And Error Method ◽  
Shrinkage Cavities ◽  
Inspection Techniques

Casting integrity is essential for providing components that meet design criteria for strength and fatigue performance. As the leading method of manufacturing metal components in the rail industry, maintaining quality and consistency is a continuing struggle for car owners and builders. Internal shrinkage and voids due to insufficient metal flow are issues commonly found in casting molds which are not designed or utilized properly. Using casting simulation software, potential issues can be discovered upfront and robust mold designs can be created that offer a tolerance for the variance or variations in casting conditions that are present in the real world. Strato, Inc. has extensively studied the effectiveness of these simulations in foundries through advanced inspection techniques. It is evident that casting simulations can not only locate, but also explain shrinkage cavities and voids through material density plots and inspection of directional solidification via critical fraction solid time plots. This approach is markedly more efficient than the traditional trial and error method, where mold makers rely on experience and destructive testing to develop acceptable mold designs. With recent advances in simulation software, the labor and time-intensive ways of the past have been supplanted by a more scientific approach to the problem. Understanding the fluid dynamics and thermodynamics of the casting process provides a means of creating a stable, repeatable final product. This higher quality final product can be delivered faster to the customer and at a far less expense by identifying problem areas prior to the tooling and sampling processes. Case-studies explored by the Strato engineering team suggest that using this software decreases the fallout rate.

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