Quality Evaluation of Remelted A356 Scraps
| Autor: | Derya Dispinar, Çağlar Yüksel, O. Tamer, Özgür Yavuz Topçuoğlu, E. Cubuklusu, Uğur Aybarç, Mustafa Cigdem, Eray Erzi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
media_common.quotation_subject Scrap Metallurgy Metals and Alloys Mechanical properties 02 engineering and technology 010501 environmental sciences 01 natural sciences Industrial and Manufacturing Engineering 020501 mining & metallurgy 0205 materials engineering lcsh:TA401-492 Melt quality lcsh:Materials of engineering and construction. Mechanics of materials Quality (business) Bifilm index Recycle 0105 earth and related environmental sciences media_common |
| Zdroj: | Archives of Foundry Engineering, Vol 16, Iss 3, Pp 151-156 (2016) |
| ISSN: | 2299-2944 |
| DOI: | 10.1515/afe-2016-0069 |
| Popis: | A356 is one of the widely used aluminium casting alloy that has been used in both sand and die casting processes. Large amounts of scrap metal can be generated from the runner systems and feeders. In addition, chips are generated in the machined parts. The surface area with regard to weight of chips is so high that it makes these scraps difficult to melt. Although there are several techniques evolved to remedy this problem, yet the problem lies in the quality of the recycled raw material. Since recycling of these scrap is quite important due to the advantages like energy saving and cost reduction in the final product, in this work, the recycling efficiency and casting quality were investigated. Three types of charges were prepared for casting: %100 primary ingot, %100 scrap aluminium and fifty-fifty scrap aluminium and primary ingot mixture were used. Melt quality was determined by calculating bifilm index by using reduced pressure test. Tensile test samples were produced by casting both from sand and die moulds. Relationship between bifilm index and tensile strength were determined as an indication of correlation of melt quality. It was found that untreated chips decrease the casting quality significantly. Therefore, prior to charging the chips into the furnace for melting, a series of cleaning processes has to be used in order to achieve good quality products. |
| Databáze: | OpenAIRE |
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