Influence of coolant motion on structure of hardened steel element

• Autorzy: Kulawik A. , Skrzypczak T. , Węgrzyn-Skrzypczak E.
• Języki publikacji: EN

Abstrakty

EN

Presented paper is focused on volumetric hardening process using liquid low melting point metal as a coolant. Effect of convective motion of the coolant on material structure after hardening is investigated. Comparison with results obtained for model neglecting motion of liquid is executed. Mathematical and numerical model based on Finite Element Metod is described. Characteristic Based Split (CBS) method is used to uncouple velocities and pressure and finally to solve Navier-Stokes equation. Petrov-Galerkin formulation is employed to stabilize convective term in heat transport equation. Phase transformations model is created on the basis of Johnson-Mehl and Avrami laws. Continuous cooling diagram (CTPc) for C45 steel is exploited in presented model of phase transformations. Temporary temperatures, phases participation, thermal and structural strains in hardening element and coolant velocities are shown and discussed.

Słowa kluczowe

EN

heat treatment; phase transformations; natural convection; finite element method

PL

obróbka cieplna; przemiany fazowe; konwekcja naturalna; metoda elementów skończonych

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3s
• Strony: 39--44
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Kulawik A.

• Technical University of Częstochowa, Institute of Mechanics and Machine Design, st. Dąbrowskiego 73, 42-200 Częstochowa, Poland

autor

Skrzypczak T.

• Technical University of Częstochowa, Institute of Mechanics and Machine Design, st. Dąbrowskiego 73, 42-200 Częstochowa, Poland

autor

Węgrzyn-Skrzypczak E.

• University of Częstochowa, Institute of Mathematics and Computer Science, st. Dąbrowskiego 73, 42-200 Częstochowa, Poland

Bibliografia

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