Rancang Bangun Anti Rust Electric Control pada Mesin CNC

Abstract

The use of a machine with Computer Numerical Control (CNC) technology is one of the
alternatives in a manufacturing process. In the process of machining using Computer Numerical
Controlled (CNC), it is necessary to check the condition of the machine, because in machining
process requires good machine quality, tools using, cooling components, material in use and
appropriate feeding procedure, so it can produce desired product. The common obstacles in CNC
machine is to overcome the corrosion that usually occurs in telescopic cover in CNC machine, so on
the method of forced flow (ICCP) with microcontroller system is applied. This method was chosen
because it is easy to control the protection current that given to the system, this research using anode
that made from graphite material and cathode which is stainlees steel 304, with temperature variable
40℃ and giving protection current 0,25 mA and 0,50 mA corresponds to the protection surface area
of 27.7172 cm2which requires a 0.066 mA current. Corrosion testing using the weight loss method is
measuring the corrosion rate by measuring weight loss. From the previous test result using
immersion test for 2 days corrosion rate that happened at 6,2008 mm / year then with rust electric
control test for 2 days resulted corrosion rate 2,5293 mm / year at current 0,25 mA whereas 0, 50 mA
produced a corrosion rate of 1.8580 mm / year. It can be concluded that the increase in the current
input can slow down the rate of corrosion that occurs in SS 304 material.