The Influence of Different Wall Thicknesses of the Casting in the Direct Squeeze Casting

• Autorzy: Pastirčák R. , Brůna M. , Bolibruchová D.

Identyfikatory

DOI

10.24425/afe.2018.125185

• Języki publikacji: EN

Abstrakty

EN

The paper deals with squeeze casting technology. For this research a direct squeeze casting method has been chosen. As an experimental material, the AlSi12 and AlSi7Mg0.3 alloys were used. The influence of process parameters variation (pouring temperature, mold temperature) on mechanical properties and structure will be observed. For the AlSi7Mg0.3 alloy, a pressure of 30 MPa was used and for the AlSi12 alloy 50 MPa. The thicknesses of the individual walls were selected based on the use of preferred numbers and series of preferred numbers (STN ISO 17) with the sequence of 3.15 mm, 4 mm, 5 mm, 6.3 mm and 8 mm. The width of each wall was 22 mm and length 100 mm. The mechanical properties (Rm, A5) for individual casting parameters and their individual areas of different thicknesses were evaluated. For the AlSi7Mg0.3 alloy, the percentage increase of the tensile strength was up to 37% and the elongation by 400% (at the 8 mm thickness of the casting). For the AlSi12 alloy, the strength increased from 8 to 20% and the tensile strength increased from 5 to 85%. The minimum thickness of the wall to influence the casting properties by pressure was set to 5 mm (based on the used casting parameters). Due to the effect of the pressure during crystallization, a considerable refinement and uniformity of the casting structure occured, also a reduction in the size of the eutectic silicate-eliminated needles was observed.

Słowa kluczowe

EN

squeeze casting; wall thickness; mechanical properties; structure; aluminium alloy

PL

odlew; grubość ścianki; właściwości mechaniczne; struktura; stop aluminium

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 1
• Strony: 19--24
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Pastirčák R.

• Department of Technological Engineering, University of Zilina, Zilina, Slovakia

autor

Brůna M.

• Department of Technological Engineering, University of Zilina, Zilina, Slovakia

autor

Bolibruchová D.

• Department of Technological Engineering, University of Zilina, Zilina, Slovakia

Bibliografia

• [1] Krajewski, W.K., Lelito, J., Suchy, J.S. & Schumacher, P. (2009). Computed Tomography – a New Tool in Structural Examinations of Castings. Archives of Metallurgy and Materials. 54(2), 335-338. ISSN 1733-3490.
• [2] Aweda, J.O., Adeyemi, M.B. (2012). Experimental Determination of Heat Transfer Coefficients During Squeeze Casting of Aluminium. An Overview of Heat Transfer Phenomena. Dr M. Salim Newaz Kazi (Ed.). ISBN 978-953-51-0827-6. InTech. DOI: 10.5772/52038.
• [3] Pastirčák, R., Ščury, J., Brůna, M. & Bolibruchová, D. (2017). Effect of Technological Parameters on the AlSi12 Alloy Microstructure During Crystallization Under Pressure. Archives of Foundry Engineering. 17(2), 75-78. ISSN 1897-3310.
• [4] Koňar, R. & Mičian, M. (2017). Ultrasonic inspection techniques possibilities for centrifugal cast copper. Archives of Foundry Engineering. 17(2), 35-38. ISSN 1897-3310.
• [5] Lee, J.H., Kim, H.S., Won, C.W. & Cantor, B. (2002). Effect of the gap distance on the cooling behavior and the microstructure of indirect squeeze cast and gravity die cast 5083 wrought Al alloy. Materials Science & Engineering A. 338(1-2), 182-190. Elsevier.
• [6] Mičian, M. & Koňar, R. (2017). Repairs of damaged castings made of graphitic cast iron by means of brazing. Archives of Foundry Engineering. 17(3), 91-96. ISSN 1897-3310.
• [7] Pecháč, P. & Sága, M. (2016). Controlling of local search methods´ parameters in memetic algorithms using the principles of simulated annealing. Procedia Engineering, 136, 70-76. ISSN 1877-7058.
• [8] Vasková, I., Hrubovčáková, M., Malik, J. & Eperješi, Š. (2014). Influence of technological parameters of furane-mixtures on shrinkage creation in ductile cast iron castings. Archives of Metallurgy and Materials. 59(3), 1037-1040. ISSN: 1733-3490. DOI: 10.2478/amm-2014-0174.
• [9] Uludağ, M., Uyaner, M., Yilmaz, F. & Dişpinar, D. (2015). Mechanical Properties and Melt Quality Relationship of Sr-modified Al-12Si Alloy. Archives of Foundry Engineering. 15(4), 134-140. ISSN 1897-3310.
• [10] Uludağ, M. & Dişpinar, D. (2017). Assessment of Mechanism of Pore Formation in Directionally Solidified A356 Alloy. Archives of Foundry Engineering. 17(1), 157-162. ISSN 1897-3310.
• [11] Muhammad Asad Ali, Mirza Jahanzaib, Muhammad Ahsan Ul Haq. (2017). Analyzing the Effect of Squeeze Casting Process Parameters on Mechanical Properties of Overcast Al-Alloy Joint using RSM. Journal of Engineering and Applied Sciences (JEAS). 36(2), 23-33. ISSN 1023-862X.
• [12] Yang, L.J. (2003). The effect of casting temperature on the properties of squeeze cast aluminium and zinc alloys. Journal of Materials Processing Technology. 140(1-3), 391-396. ISSN 0924-0136.

Uwagi

PL

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