Computer Simulation of Solidification of Nodular Cast Iron

1984 ◽  
Vol 34 ◽  
Author(s):  
Kou-Chang Su ◽  
Itsuo Ohnaka ◽  
Isamu Yamauchi ◽  
Tatsuichi Fukusako
Keyword(s):  
Computer Simulation ◽  
Cast Iron ◽  
Size Distribution ◽  
Growth Model ◽  
Nodular Cast Iron ◽  
Cooling Curves ◽  
Iron Casting ◽  
Nodular Iron ◽  
Diffusion Controlled ◽  
And Diffusion

ABSTRACTSolidification of a nodular iron casting was simulated by an undercooling nucleation and diffusion controlled growth model. Simulated cooling curves were similar to measured ones but estimating nodular size distribution requires improving the model.

A Study of the Shrinkage and Dilatation during Solidification of Nodular Cast Iron - its Relation to the Morphology of Crystallisation

1984 ◽  
Vol 34 ◽  
Author(s):  
R. Hummer
Keyword(s):  
Cast Iron ◽  
Nodular Cast Iron ◽  
Operating Conditions ◽  
Cooling Curves ◽  
The Real ◽  
Solidification Behaviour ◽  
Feeding Technique ◽  
Nodular Graphite

ABSTRACTThis study deals with the solidification behaviour of cast iron with nodular graphite. By measurement of the “apparent shrinkage” the real feeding requirement can be determined under operating conditions. By means of cooling curves and measurements of dilatation the mode of solidification is established. The results are in accordance with today's knowledge of the morphology of crystallisation and offer an operating hypothesis for feeding technique in practice.

scholarly journals Analysis of Cooling Curves of Nodular Cast Iron

2018 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Marianna Bartošová ◽  
Alena Pribulová ◽  
Štefan Eperješi ◽  
Peter Futáš
Keyword(s):  
Cast Iron ◽  
Nodular Cast Iron ◽  
Cooling Curves

Study on the Low Cycle Fatigue Damage of Nodular Cast Iron Based on Elastic Modulus

2006 ◽  
Vol 324-325 ◽  
pp. 851-854
Author(s):  
Jin Hai Liu ◽  
Xiao Yan Hao ◽  
Guo Lu Li ◽  
Xue Bo Zhao ◽  
Gen Sheng Liu
Keyword(s):  
Cast Iron ◽  
Elastic Modulus ◽  
Fatigue Damage ◽  
Low Cycle Fatigue ◽  
Nodular Cast Iron ◽  
Damage Variable ◽  
Cycle Fatigue ◽  
Sensitive Parameter ◽  
Nodular Iron ◽  
Iron Based

The influence of fatigue ratio on the low cycle fatigue damage of nodular cast iron was investigated by measuring the elastic modulus. The results indicated that the elastic modulus of nodular cast iron is a sensitive parameter to the fatigue damage at low cycle. The fatigue damage variable of nodular cast iron increases with cycle ratio. At the beginning and end period of cycling, the damage of nodular iron increases sharply, and in the range of 0.2- 0.8 cycle ratio, the fatigue damage grows gradually.

scholarly journals Ultrasonic Scattering Attenuation in Nodular Cast Iron: Experimental and Simulation Studies

2021 ◽  
Vol 67 (5) ◽  
pp. 245-255
Author(s):  
Mário João Santos ◽  
Jaime Batista Santos
Keyword(s):  
Cast Iron ◽  
Size Distribution ◽  
Nodular Cast Iron ◽  
Analytical Models ◽  
Simulation Studies ◽  
Ultrasonic Scattering ◽  
Scattering Attenuation ◽  
The One ◽  
Scatterer Size

This work evaluates the ultrasonic scattering attenuation of structures with complex scatterer distributions via experimental and simulation studies. The proposed approach uses experimental attenuation knowledge to infer the scatterer size and its concentration in the studied structures, which are important for the effective construction of simulated models. The MATLAB k-Wave toolbox has been used to implement the simulator. Several cast-iron samples have been used to demonstrate the importance of simulation in the characterization of such structures. First, the scattering attenuation was evaluated using the Truell and Papadakis models, and then the results were compared with experimental ones. Emphasis was given to the Papadakis approach because it takes into account the scatterer size distribution. It is demonstrated that both analytical models provide results that are far from the experimental ones. The developed simulator for the studied samples led to a predictive model, in which the attenuation was proportional to the fifth power of the scatterer size, and the corresponding formulation is close to the one proposed by the analytical models.

scholarly journals Low Frictional MoS2/WS2/FineLPN Hybrid Layers on Nodular Iron

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 293 ◽  
Author(s):  
Pior Kula ◽  
Robert Pietrasik ◽  
Sylwester Pawęta ◽  
Adam Rzepkowski
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Composite Coatings ◽  
Nodular Cast Iron ◽  
Iron Nitrides ◽  
High Wear Resistance ◽  
Low Friction ◽  
Nodular Iron ◽  
Hybrid Layers ◽  
Interesting Alternative

The paper presents the new concept of low frictional hybrid composite coatings on nodular cast iron. The structure of it is multilayer and consists of MoS2 and/or WS2 nanoinclusions embedded in the iron nitrides’ zone and relatively deep hard diffusion zone. It offers a low friction coefficient as well as high wear resistance of coated parts. The details of technology as well as the mechanism of layer’s growth have been presented and discussed. The presented technology may be an interesting alternative for chromium-based galvanic coatings of piston rings made of nodular iron using Cr6+.

Computer Simulation of the Structure Formed During Solidification of Cast Iron

1984 ◽  
Vol 34 ◽  
Author(s):  
Hasse Fredriksson ◽  
Ingvar L. Svensson
Keyword(s):  
Computer Simulation ◽  
Cast Iron ◽  
White Cast Iron ◽  
Solidification Process ◽  
Nodular Cast Iron ◽  
Heat Extraction ◽  
Kinetic Growth ◽  
Growth Laws ◽  
Different Thickness

ABSTRACTBy combining heat extraction laws with kinetic growth laws, the solidification process of nodular, grey and white cast iron have been calculated. The risk for formation of white structure during solidification of grey and nodular cast iron was calculated. The calculations was done for different thickness of the casting as well as, as a function of the number of growing units. The fraction of white structure was also calculated.

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