03-10-2014, 12:56 PM
Abstracts: This investigation shows the effect of machining parameters such as speed, feed and depth of cut on hard turning of EN-31 hardened to 176 BHN using cemented carbide inserts of PVD(Plastic vapour deposition) coated. Cutting oil is one of the important factor which helps to increase tool life, so if we use suitable cutting oil for given material then it helps to improve production rate in machining of given material. so in over project suggested suitable cutting oil for alloy steel (eg. EN-31) is the mixture of sulphur based oil and crude oil. In this cutting oil percentage of sulphur based oil is 75% and percentage of crude is 25%.