Analysis of Interaction between Position of Gate and Selected Properties of Low-Weight Casts on the Silumin Basis

• Autorzy: Majernik J. , Gaspar S.

Identyfikatory

DOI

10.24425/afe.2019.129619

• Języki publikacji: EN

Abstrakty

EN

Final quality of casts produced in a die casting process represents a correlation of setting of technological parameters of die casting cycle, properties of alloy, construction of a die and structure of gating and of bleeding systems. Suitable structure of a gating system with an appertaining bleeding system of the die can significantly influence mechanical and structural properties of a cast. The submitted paper focuses on influence of position of outfall of an gate into the cast on its selected quality properties. Layout of the test casts in the die was designed to provide filling of a shaping cavity by the melt with diverse character of flowing. Setting of input technological parameters during experiment remained on a constant level. The only variable was the position of the gate. Homogeneity represented by porosity f and ultimate strength Rm were selected to be the assessed representative quality properties of the cast. The tests of the influence upon monitored parameters were realized in two stages. The test gating system was primarily subjected to numerical tests with the utilization of a simulation program NovaFlow&Solid. Consequently, the results were verified by the experimental tests carried out with the physical casts produced during operation. It was proved that diverse placement of the gate in relation to the cast influences the mode of the melt flowing through the shaping cavity which is reflected in the porosity of the casts. The experimental test proved correlation of porosity f of the cast with its ultimate strength Rm. At the end of the paper, the interaction dependencies between the gate position, the mode of filling the die cavity, porosity f and ultimate strength Rm.

Słowa kluczowe

EN

high pressure die casting; product development; mechanical properties

PL

odlewanie wysokociśnieniowe; rozwój produktów; właściwości mechaniczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 3
• Strony: 106--110
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr

Twórcy

autor

Majernik J.

• Institute of Technology and Business in České Budějovice, České Budějovice, Czech Republic

autor

Gaspar S.

• Technical University of Košice, Faculty of Manufacturing Technologies with the Seat, Prešov, Slovakia

Bibliografia

• [1] Ružbarsky, J. et al. (2014). Techniques of Die Casting. Lüdenscheid: RAM – Verlag.
• [2] Paško, J., Gašpár, Š. (2014). Technological Factors of Die Casting. Lüdenscheid: RAM – Verlag.
• [3] Iwata, Y. et al.. (2012). Compression behavior of entrapped gas in high pressure diecasting. Materials Transactions. 53(3), 483-488. DOI: 10.2320/matertrans.F-M2011858.
• [4] Gašpár, Š. et al. (2017) Influence of Structure Adjustment of Gating System of Casting Mould upon the Quality of Die Cast. 1st ed. Lüdenscheid: RAM - Verlag, 82 p. ISBN 978-3-942303-47-7.
• [5] Majerník, J. et al.. (2017). Analysis of Influence Dimensions of the Gate on the Homogeneity of the Low Weight Castings Made of Silumin. Manufacturing Technology. 17(4), 499-502. ISSN 1213–2489.
• [6] Cao, H. et al.. (2019). Direct observation of filling process and porosity prediction in high pressure die casting. Materials. 12(7), Article number 1099. DOI: 10.3390/ma12071099.
• [7] Trytek, A. et al.. (2016) The Effect of a Thin-Wall Casting Mould Cavity Filling Conditions on the Casting Surface Quality. Archives of Foundry Engineering. 16(4), 222-226. DOI: 10.1515/afe-2016-0113.
• [8] ČSN 420315. Testing of metals. Cylindrical test rods with smooth cylindrical heads for tensile testing. Prague: Office of Standards and Measurements. 1980. 4 p.
• [9] ČSN EN 1706. Aluminum and aluminum alloys - Castings - Chemical composition and mechanical properties Prague: Office for Technical Standardization, Metrology and State Testing 2010. 28 p.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).