چكيده به لاتين
Abstract:
Nowadays need for manufacturing parts with the highest quality in shortest time leads to decrease of manufacturing costs, demands for manufacturing supplies with high efficiency is increased. A significant part of manufacturing time in parts fabrication is related to machining. High speed Machining is known as one of the most important fabrication technologies for high efficiency and is one of the advanced method for machining which leads to higher removal rate, less cutting force and less energy consuming.
One of the most important subject in machining is cooling. Cooling in machining process is one of the effective factor on quality and machinability, and choosing suitable strategy for cooling is one of the important factor in machining process. On the other hand, environmental problems and harms on operators, limit usage of mineral lubrication. One of the new method which is used for cooling and lubricating in machining is lubrication with the Minimum Quantity of Lubrication. In this method, cutting fluid after combination with air, spraying the powder by a nozzle on machining zone.
One of the consuming aluminum in which is applied in marine industry and shipbuilding is aluminum alloy 5083. This type of aluminium with alloy element Mn, good weldability, good corrosion resistance and average stability, due to this properties in marine industries and welding strategies is applied.
Aim of this project is investigation of different cooling strategies in high speed milling aluminum alloy 5083, in order to define the effect of cooling method on surface quality and toll performance. In this purpose the main machining parameters include cutting speed, feed rate and lubrication type and by doing different experiment effect of these parameters is investigated.
Results show that, MQL conditions has less damage for environment and in aspect of economy, using this method is cost-effective.
Device abrasion decreased and increasing lifetime, MQL has the good conditions in compare to the other cooling method such as wet machining.