The Study Of Size Effect On Surface Finish When Hard Turning Aisi D2 Tool Steel

Mohd Aizat, A. Hamid (2008) The Study Of Size Effect On Surface Finish When Hard Turning Aisi D2 Tool Steel. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The introduction of hard turning has provided an alternative to the conventional processing technology used to manufacture parts made from hardened steels. Shorter product development time along with being more environmentally friendly are among the benefits offered by hard turning, which potentially results in lower manufacturing cost per part. However, common tool materials for hard turning applications are expensive. Due to the continuous developments in cutting tool materials and coating technology, inexpensive coated carbide cutting tools are being investigated to determine the potential of using them for use in extreme conditions as in hard turning. TiN coated carbide tool was selected to finish machine hardened steel. Performing hard turning at various workpiece size revealed that the surface finish values of 0.68 μm that meet the strict range of finish machining of workpiece diameter of 70 mm and 0.77 μm of finish machining of workpiece diameter of 100 mm were obtained when finish machining hardened steel of 45 HRC hardness. The results show that smooth surface finish was influenced by workpiece diameter.

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