<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The use of cast aluminium has still increased, so have the mechanical property requirements. By casting and also in other metallurgical processes, the inclusions enter to the molten aluminium alloy and it exhibits poor ductility or toughness. It can cause a variety of problems in the manufacture of aluminium alloy castings. Therefore, the purification of the molten aluminium alloy is one of the most important processes for improving the quality of Al-products. Filters have been used for many years in order to improve the quality of castings. The inclusions in molten secondary AlSi7Mg0.3 cast were removed using depth filtration by ceramic foam filters of 20 ppi porosity. Were used 4 types of ceramic filters in 2 thicknesses (15 and 22 mm); Brinell hardness and porosity were measured. Quality of microstructure (occurrence of oxidic particles and larger non-metallic inclusions) was observed. Experimental results show that the insertion of ceramic filters into the inlet system has contributed primarily to a decrease in porosity. On the microstructure, the inclusion of filters was not significantly reflected.</p></abstract>

The use of cast aluminium has still increased, so have the mechanical property requirements. By casting and also in other metallurgical processes, the inclusions enter to the molten aluminium alloy and it exhibits poor ductility or toughness. It can cause a variety of problems in the manufacture of aluminium alloy castings. Therefore, the purification of the molten aluminium alloy is one of the most important processes for improving the quality of Al-products. Filters have been used for many years in order to improve the quality of castings. The inclusions in molten secondary AlSi7Mg0.3 cast were removed using depth filtration by ceramic foam filters of 20 ppi porosity. Were used 4 types of ceramic filters in 2 thicknesses (15 and 22 mm); Brinell hardness and porosity were measured. Quality of microstructure (occurrence of oxidic particles and larger non-metallic inclusions) was observed. Experimental results show that the insertion of ceramic filters into the inlet system has contributed primarily to a decrease in porosity. On the microstructure, the inclusion of filters was not significantly reflected.

Improving the quality of Al-Si castings by using ceramic filters

Department of Materials Engineering, Faculty of Mechanical Engineering

Production Engineering Archives

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Improving the quality of Al-Si castings by using ceramic filters"}

The use of cast aluminium has still increased, so have the mechanical property requirements. By casting and also in other metallurgical processes, the...

Improving the quality of Al-Si castings by using ceramic filters

Publié en ligne: 13 avr. 2020

Pages: 19 - 24

Reçu: 08 janv. 2020

Accepté: 31 mars 2020

DOI: https://doi.org/10.30657/pea.2020.26.05

Mots clés
aluminium alloy, ceramic filters, hardness, porosity

© 2020 Ivana Švecová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Improving the quality of Al-Si castings by using ceramic filters

Publié en ligne: 13 avr. 2020

Pages: 19 - 24

Reçu: 08 janv. 2020

Accepté: 31 mars 2020

DOI: https://doi.org/10.30657/pea.2020.26.05

Mots clésaluminium alloy, ceramic filters, hardness, porosity

© 2020 Ivana Švecová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
aluminium alloy, ceramic filters, hardness, porosity