Comparison studies of machinability for aluminium, mild steel and heat treated mild steel

摘要

In recent years, industry spend almost quarter amount of the actual annualudspend only for performing the metal removal operation. In order to cut this amount,udit is necessary to understand the machining process that shall be done and theudmachinability of the material. While machining is the process designed to change theudsize, shape, and surface of a material through removal of materials, machinabilityudcame as important as the ease with which it can be machined. However,udmachinability is not a property of a material but an attribute. With this attribute, thereudare four major factors which are surface roughness, chip formation, tool life andudcutting force. Material made of aluminum and mild steel is widely use since they areudthe cheapest material compare to the other steel that not require very high strength.udTherefore, to manufacture components economically, engineers are challenged toudfind ways to improve machinability without harming performance. Machinabilityudcan be difficult to predict because machining is such a complex process. In short, audgood material with good machinability is the one that require low powerudconsumption, low tool life and have high surface finish rate without surface damage.