Selected parameters of moulding sands for designing quality control systems
Journal Title: Archiwum Odlewnictwa - Year 2010, Vol 10, Issue 3
Abstract
One of the modern methods of production optimisation are artificial neural networks. Neural networks owe their popularity to the fact that they are convenient tools, which can be utilised in a wide scope of problems. They are capable of reflecting complex functions. Especially their non-linearity should be emphasised. They are gaining wider and wider application in the foundry industry, among others, to control melting processes in cupolas and arc furnaces, designing castings and supply systems, control of moulding sands treatments, prediction of properties of cast alloys as well as selecting die casting. An attempt of the application neural networks to the quality control of moulding sands with bentonite is presented in the paper. This is a method of assessing the suitability of moulding sands by finding correlations in between individual parameters, by means of artificial neural network systems. The presented investigations were performed with the application of the Statistica 8.0 program. The investigations were aimed at the selection of the proper kind of a neural network for prediction a sand moistness on the bases of certain moulding sand properties such as: permeability, compactibility and friability. These parameters – determined as sand moistness functions - were introduced as initial parameters. Application of the Statistica program allowed for an automatic selection of the most suitable network for the reflection of dependencies and interactions existing among the proposed parameters. The best results were obtained for unidirectional multi-layer perception network (MLP). The neural network sensitivity to individual moulding sand parameters was determined, which allowed to reject not important parameters when constructing the network.
Authors and Affiliations
J. Jakubski, St. M. Dobosz
Keywords
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