Application of JM®-Test in 3D simulation of quenching

• Autorzy: Smoljan B. , Tomašić N. , Iljkić D. , Felde I. , Reti T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Simulation of hardness distribution in quenched steel specimen has been investigated using 3D numerical formulation. Structural mesh has been used in numerical simulation. Numerical calculations of hardness distribution in specimen made of high hardenability steel have been performed in order to define appropriate steel for manufacturing of machine part. Possibility of application of numerical model based on experimental results in steel quenching has been investigated. Design/methodology/approach: Numerical simulation of the steel quenching is consisted of computation of cooling curve during the quenching and prediction of hardness at specimen points after the quenching. Hardness at specimen points is estimated by the conversion of cooling time results to hardness. Conversion is provided by the relation between cooling time and distance from the quenched end of Jominy-specimen. In this way the numerical simulation has been combined with experimental Jominy-test. Findings: Structure transformation and hardness distribution can be successfully estimated based on time, relevant to structure transformation. Relevant time for quenching results for most structural steels is cooling time from 800 to 500 ̊C (t8/5). Research limitations/implications: Since high hardenability of investigated steel there are limits in application of original Jominy-specimen in simulation of quenching of steels. The modified Jominy-test enables cooling time, t8/5 higher than Jominy-test. Practical implications: The simulation of quenching based on modified Jominy-test can be applied for steels with higher hardenability. This method of simulation is especially suitable for tools and dies steels. 3D numerical simulation of quenching is more confident in practical implementation and provides more information than 2D formulation. Originality/value: Using the results of simple experimental test, i.e., modified Jominy-test in numerical modeling of steel quenching it is possible to achieve better results of hardness simulation.

Słowa kluczowe

EN

numerical techniques; 3D modelling; steel quenching

PL

techniki numeryczne; modelowanie 3D; hartowanie stali

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 281--284
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Smoljan B.

• Department of Materials Science and Engineering, Faculty of Engineering, University of Rijeka, Vukovarska 58, HR-51000 Rijeka, Croatia

autor

Tomašić N.

• Department of Materials Science and Engineering, Faculty of Engineering, University of Rijeka, Vukovarska 58, HR-51000 Rijeka, Croatia

autor

Iljkić D.

• Department of Materials Science and Engineering, Faculty of Engineering, University of Rijeka, Vukovarska 58, HR-51000 Rijeka, Croatia

autor

Felde I.

• Bay Zoltan Institute for Materials Science and Technology, Budapest, Hungary

autor

Reti T.

• Szechenyi Istvan University, Gyor, Hungary

Bibliografia

• [1] B. Smoljan, Mathematical Modelling of Steel Quenching, Proceedings of the 9th International Scientific Conference AMME 2000., Gliwice-Sopot-Gdansk, 495-498.
• [2] B. Smoljan, The Calibration of the Mathematical Model of Steel Quenching, Proceedings of 5th World Seminar on Heat Treatment and Surface Engineering, Isfahan, Eds. M. Salehi, ISSST and IFHT, Vol.1, 1995, 709-715.
• [3] B. Liščić, G. Totten, Controllable Delayed Quenching, Proceedings of International Heat Treating Conference, Schaumburg, 1994, 253-262.
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• [5] B. Liščić et al., Heat Treatment – Practicum, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 1992.
• [6] S. Patankar, Numerical Heat Transfer and Fluid Flow, McGraw Hill Book Company, New York, 1980.
• [7] B. Smoljan, Numerical Simulation of As-Quenched Hardness in a Steel Specimen of Complex Form, Communications in Numerical Methods in Engineering, 14, 1998, 277-285.
• [8] B. Smoljan, N. Tomašić, S. Smokvina Hanza, Simulation of Hardness Distribution in Quenched Steel Specimen, Proceedings of 13th International Scientific Conference AMME 2005, Gliwice-Wisla, 597-600.
• [9] B. Smoljan, D. Rubeša, N. Tomašić, S. Smokvina Hanza, D. Iljkić, An Application of Modified Jominy-Test in Computer Simulation of Quenching of Cold Work Tool Steels, 1st International Conference on Heat Treatment and Surface Engineering of Tool and Dies, Pula, 2005, 443-448.
• [10] N.V.S.N Murty, A Hardenability Test Proposal, Proceedings of the 2nd International Conference on Quenching and the Control of Distortion, 4-7 November, 1996, Cleveland, Ohio.
• [11] B. Smoljan, D. Iljkic, N. Tomasic, I. Felde, G.E. Totten, T. Reti, Evaluation of Steel Hardenability by JM®-Test, Hungarian Conference and Exfibition on Materials Science, Testing and Informatics, 2005, Balatonfured, Hungary.
• [12] B. Smoljan, D. Iljkic, N. Tomasic, G.E. Totten, An application of JM®-specimen in prediction of steel quenching results, The 11th International Scientific Conference CAM3S, 2005, Gliwice-Zakopane.
• [13] B. Smoljan, Mathematical Modelling of Austenite Decomposition during the Quenching, Proceedings of 13th International Scientific Conference AMME 2005, Gliwice-Visva, 593-596.
• [14] B. Smoljan, Computer Simulation of Mechanical Properties Stresses and Strains of Quenched Steel Specimen, 8th International Scientific Conference, AMME 1999, Gliwice-Rydzyna.
• [15] B. Smoljan, Contribution to Numerical Estimating the Hardness Penetration Depth on Steel Specimen, Mechanical Engineering (in croatian), Vol. 36, No. ¾, 1994., 151-155.