| dc.description.abstract | Applying cutting fluid is a common case in machining, as it can prolong
the tool life. However, excessive using it may cause a bad affect on the
operator and environment. Alternatively, applying minimum quantity
lubrication (MQL) to reduce the bad effects yet gain a maximum advance
of using cutting fluid. This study aims to determine the most optimal
parameters in the AISI 4340 steel turning process with a minimum
quantity lubrication method to produce the best chips formation. The best
chips were measured by their possibility to break by the term degree of
serration (DOS). The experiment design used was the Taguchi orthogonal
array L9 〖(3〗^4). method. The varied parameters were the depth of cut,
cutting speed, method of giving cutting fluid, and feed rate. Based on the
mean response value, it can be concluded that to get the most optimal
results of discontinuous chips would be achieved by combining
parameters: depth of cut 2.2 mm, cutting speed 200 m/min, flood type
cutting fluid application, and feed rate 0.107 mm/rev. Each parameter
contributed to the degree of serration in order are the method to apply
cutting fluid, depth of cut, cutting speed, and feed rate by 82.87%, 7.38%,
5.41% 4.14% respectively | en_US |
