What is it about?
In this paper, single roll melt spinning technique is used as a sustainable manufacturing process to reduce waste, time, energy, and cost. The non-conventional forming machine is manufacturing to produce very thin ribbon 5052 and 5083 Al-Mg alloys in the range of micrometer. It is a tool for modifying the microstructure of alloy and improved their properties. The process has a direct impact for saving materials, machine, method, men, and money (5 M) compared with conventional forming technology due to their ability to produce very thin ribbons directly from liquid state. The properties of the produced ribbons were investigated and the result indicating that there is a possibility to produce ribbons with micro thickness of 20 to 330 μm and width of 0.97 to 7.4 mm. Moreover, the hardness was improved to be more than twice of the original hardness of alloy. The corrosion resistance of alloy was improved and their rate was reduced.
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Why is it important?
Sngle roll melt spinning process has one of the highest melt cooling rates among all continuous casting process because the solidification time and movement of the melt and substrate are very short. The major advantage of single roll melt spinning is the possibility of continuous production of rapidly solidified materials in the form of thin ribbons, even on a large industrial scale [15]. It can be classified into free jet melt spinning and planer flow melt spinning depending on the distance between ladle nozzle and substrate roll. For free jet melt spinning , the distance more than one millimeter and for planer flow melt spinning, the distance is less than one millimeter. Therefore, in the present research, single roll melt spinning machine with free jet is used to study the possibility to produce very thin ribbons from two types of Al-Mg alloys
Perspectives
The results shows that there is a possibility to produce ribbons with very thin thickness of 20 μm using single roll melt spinning process as a sustainable manufacturing process.The process was reduced the steps of producing thin sheet to be one pass and one roll instead of multi pass and multi roll as in traditional rolling process (tandem roll). On the other hand, there is no need to use reheating furnace, which led to reduce the energy and pollution. Moreover, the properties of rapid solidification alloys were improved.The hardness and tensile strength were improved to be more than twice of the original values before rapid solidification process and the microstructure was modified too.It was increased to be 200% and 300% for 5052 and 5083, respectively.Corrosion rate of rapid solidified ribbons was improved to be lower than the rate of original alloys before rapid solidification. They were become 1.643 instead of 10.02 mpy for 5052 and 1.954 instead of 6.911 mpy for 5083 alloys
Prof. Dr Eng. Ali Sabea Hammood
University of Kufa -Faculty of Engineering -Materials Engineering Department
Read the Original
This page is a summary of: Single Roll Melt Spinning Technique Applied as a Sustainable Forming Process to Produce Very Thin Ribbons of 5052 and 5083 Al-Mg Alloys Directly from Liquid State, Procedia CIRP, January 2016, Elsevier,
DOI: 10.1016/j.procir.2016.01.079.
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