Effect of the Machined Surfaces of AISI 4337 Steel to Cutting Conditions on Dry Machining Lathe

The objective of the research is to obtain a cutting condition which has a good chance of realizing dry machining concept on AISI 4337 steel material by studying surface roughness, microstructure and hardness of machining surface. The data generated from the experiment were then processed and analyzed using the standard Taguchi method L9 (3(4)) orthogonal array. Testing of dry and wet machining used surface test and microhardness test for each of 27 test specimens. The machining results of the experiments showed that average surface roughness (Raavg) was obtained at optimum cutting conditions when VB 0.1 mm, 0.3 mm and 0.6 mm respectively 1.467 mu m, 2.133 mu m and 2,800 mu m for dry machining while which was carried out by wet machining the results obtained were 1,833 mu m, 2,667 mu m and 3,000 mu m. It can be concluded that dry machining provides better surface quality of machinery results than wet machining. Therefore, dry machining is a good choice that may be realized in the manufacturing and automotive industries.