The Influence of Home Scrap on Porosity of MgAl9Zn1 Alloy Pressure Castings

• Autorzy: Konopka Z. , Chojnacki A. , Łągiewka M. , Zyska A.

Identyfikatory

DOI

10.1515/afe-2017-0018

• Języki publikacji: EN

Abstrakty

EN

The work presents the results of examinations concerning the influence of various amounts of home scrap additions on the porosity of castings made of MgAl9Zn1 alloy. The fraction of home scrap in the metal charge ranged from 0 to 100%. Castings were pressure cast by means of the hot-chamber pressure die casting machine under the industrial conditions in one of the domestic foundries. Additionally, for the purpose of comparison, the porosity of specimens cut out directly of the MgAl9Zn1 ingot alloy was also determined. The examinations consisted in the qualitative assessment of porosity by means of the optical microscopy and its quantitative determination by the method of weighting specimens in air and in water. It was found during the examination that the porosity of castings decreases with an increase in the home scrap fraction in the metal charge. The qualitative examinations confirmed the beneficial influence of the increased home scrap fraction on the porosity of castings. It was concluded that the reusing of home scrap in a foundry can be a good way of reduction of costs related to the production of pressure castings.

Słowa kluczowe

EN

innovative foundry technologies; innovative foundry materials; automation in foundry; robotics in foundry; environmental protection; porosity; magnesium alloys

PL

innowacyjne technologie odlewnicze; innowacyjne materiały odlewnicze; automatyzacja odlewnictwa; robotyka w odlewni; ochrona środowiska; porowatość; stopy magnezu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 1
• Strony: 99--102
• Opis fizyczny: Bibliogr. 15 poz., il., tab., wykr.

Twórcy

autor

Konopka Z.

• Department of Foundry, Czestochowa University of technology, al. Armii Krajowej 19, 42-200 Częstochowa

autor

Chojnacki A.

• Department of Foundry, Czestochowa University of technology, al. Armii Krajowej 19, 42-200 Częstochowa

autor

Łągiewka M.

• Department of Foundry, Czestochowa University of technology, al. Armii Krajowej 19, 42-200 Częstochowa

autor

Zyska A.

• Department of Foundry, Czestochowa University of technology, al. Armii Krajowej 19, 42-200 Częstochowa

Bibliografia

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• [5] Avedesian, M.M., Baker, H. (1999). Magnesium and Magnesium Alloys. ASM International.
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• [7] Dahle A.K., StJohn D.N. (1999) The Origin of Banded Defects in High Pressure Die Cast Magnesium Alloys. In Proceedings of 20th International Die Casting Congress, World of Die Casting. Cleveland T99-062.
• [8] Oniszczuk, A., Rzadkosz, S. (2005). Analysis of quality of magnesium alloy castings. In 19th Scientific Conference of the Faculty of Foundry Engineering of AGH UST, November 2005 (pp.193-198). Cracow. (in Polish).
• [9] Street, A.C. (1986). The die casting book. (Second edition). Redhill: Portcullis Press.
• [10] Fitze, R. (2003). Improve the competitiveness of magnesium die casting by inline recycling of ten runner system. In 11th Magnesium Automotive and End User Seminar, 25-26 September 2003, Aalen.
• [11] Kainer, K.U. (2000). Magnesium Alloys and their Application. In Sb. Int. Congress Magnesium Alloys and their Application. Mnichov. (pp. 534-608).
• [12] Moscovitch, N., Gertsberg, G., Nagar, N., Gur, D., Bronfin, B., Aghion, E. (2000). The use of die casting technology in the process of developing new magnesium alloys. 9th Magnesium and User Seminar. Aallen. Germany.
• [13] Sannes, S., Gjestland, H., Westengen, H., Laukli, H.I. (2003). Magnesium alloys and applic. DGM, Wolfsburg. Germany. 725-731.
• [14] Chojnacki, A., Konopka, Z. (2010). Casting of the AZ91 alloy below atmospheric pressure. In 11th International Scientific Conference ‘New technologies and achievements in metallurgy and material science’, 20-21 May 2010 (pp. 563-566). Częstochowa: Ed. WIPMiFS. (in Polish).
• [15] Konopka, Z. & Chojnacki, A. (2011). Structure of the AZ91 alloy pressure castings fabricated of home-scrap containing charge. Archives of Foundry Engineering. 11(2), 61-64.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).