22-10-2014, 03:36 PM
First samples were heat treated at different temperature ( 1000 deg c -1200 deg c) for different soaking time depending upon thickness .Then it was pickled and mounting was done by making use of cold setting powder and cold setting liquid.Then microstructure were observed by making use of etchant glyceria and some samples were etched by 10 gm oxallic axid ,100 ml water electrolytically at 6 v. ROCKWELL B hardness and YS and UTS were taken and analysed . During internship ,I also visited different workshops .