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Artificial Neural Network to the Control of the Parameters of the Heat Treatment Process of Casting

Wróbel J., Kulawik A., Bokota A.

Archives of Foundry Engineering

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2015

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Vol. 15, iss. 1

119--124

EN

In the paper the use of the artificial neural network to the control of the work of heat treating equipment for the long axisymmetric steel elements with variable diameters is presented. It is assumed that the velocity of the heat source is modified in the process and is in real time updated according to the current diameter. The measurement of the diameter is performed at a constant distance from the heat source (Δz = 0). The main task of the model is control the assumed values of temperature at constant parameters of the heat source such as radius and power. Therefore the parameter of the process controlled by the artificial neural network is the velocity of the heat source. The input data of the network are the values of temperature and the radius of the heated element. The learning, testing and validation sets were determined by using the equation of steady heat transfer process with a convective term. To verify the possibilities of the presented algorithm, based on the solve of the unsteady heat conduction with finite element method, a numerical simulation is performed. The calculations confirm the effectiveness of use of the presented solution, in order to obtain for example the constant depth of the heat affected zone for the geometrically variable hardened axisymmetric objects.

2

Uproszczone pole temperatury dla analizy procesu spawania laserowego

Zowczak W.

Przegląd Elektrotechniczny

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2011

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R. 87, nr 7

76-78

PL

Przedstawiono model dwufazowy wykorzystujący analityczne rozwiązania równań przewodnictwa cieplnego. W fazie stałej pole temperatury opisane jest za pomocą rozwiązania dla liniowego ruchomego źródła ciepła, zaś w fazie ciekłej wykorzystano rozwiązanie dla ruchomego źródła walcowego. Pokazano przykład liczbowy. Opisane rozwiązanie może być użyteczne przy analizie procesów głębokiego spawania.

EN

Two-phase model of temperature field has been presented. The temperature field within the solid phase is described by the solution for the moving line source, while in the liquid phase the solution for the moving cylindrical source has been used. A numerical example has been shown. The presented temperature field may be useful for the analysis of laser keyhole welding.

3

Pole temperatury staliwnego ogniwa czerpaka koparki napawanego oscylacyjnie

Winczek J.

Archiwum Odlewnictwa

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2003

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R. 3, nr 10

267--272

PL

W pracy przedstawiono analityczny opis pola temperatury podczas napawania staliwnego ogniwa czerpaka koparki. Dla przyjętego schematu nakładania napoin określono pole temperatury wywołane elektrodą poruszającą się ruchem oscylacyjnym względem osi napoiny. W analizie uwzględniono zmiany temperatury wywołane nakładaniem kolejnych napoin (przyrosty temperatury z kolejnymi ruchami elektrody i stygnięcia już napawanych obszarów).

EN

In paper the three-dimensional analytical temperature field during multiple rebuilding of side link of stripper shovel bucket is described. For accepted sequence of padding the temperature field subjected to oscilating moving weld heat source with respect to axle of weld is calculated. The solution considers the summing of increments of temperature during succeding transitions of welding electrode with simultaneous cooling padded weldes and zones, which were heated earlier.