PENGARUH DEPTH OF CUT PADA PROSES FACE MILLING MENGGUNAKAN METODE MINIMUM QUANTITY LUBRICATION DENGAN PELUMAS MINYAK JAGUNG TERHADAP LAJU KOROSI STAINLESS STEEL AISI 316L

Rahadian Setiawan, Yustiza (2021) PENGARUH DEPTH OF CUT PADA PROSES FACE MILLING MENGGUNAKAN METODE MINIMUM QUANTITY LUBRICATION DENGAN PELUMAS MINYAK JAGUNG TERHADAP LAJU KOROSI STAINLESS STEEL AISI 316L. Sarjana thesis, Universitas Brawijaya.

Abstract

Lingkungan pesisir pantai yang bersifat korosif akan mengakibatkan tingginya laju korosi yang akan dihasilkan oleh logam yang berada disekitarnya, salah satunya merupakan komponen dari wells turbine dari pembangkit listrik tenaga gelombang laut yaitu guide vane dimana apabila laju korosi yang dimiliki komponen tersebut tinggi maka umur penggunaan komponen tersebut menjadi lebih rendah dan rawan terjadi korosi. Salah satu cara untuk mengurangi laju korosi dapat dilakukan dengan memperhatikan parameter yang digunakan pada saat proses pembuatan komponen tersebut salah satunya yaitu proses permesinan dan spesifiknya merupakan face milling. Ada berbagai macam parameter permesinan pada proses face milling, salah satunya adalah parameter depth of cut. Dengan menggabungkan metode pelumasan minimum quantity lubrication disini penulis mencoba melakukan permesinan dengan melakukan variasi pada perubahan depth of cut atau kedalaman pemakanan dengan spesimen stainless steel AISI 316L menggunakan mesin CNC HAAS VF – 2 dengan metode minimum quantity lubrication dan memanfaatkan minyak jagung sebagai minyak nabati terbarukan yang bersifat biodegradable dan lebih ramah lingkungan apabila dibandingkan dengan cutting fluid konvensional. Proses permesinan dilakukan dengan variasi depth of cut dar nilai 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, dan 0.6 mm yang nantinya akan menghasilkan kekasaran permukaan yang bervariasi. Tingginya kekasaran permukaan akan mengakibatkan meningkatnya nilai laju korosi yang akan dihasilkan. Hasil penelitian menunjukan bahwa semakin tinggi penggunaan nilai depth of cut maka akan semakin tinggi pula nilai kekasaran permukaan yang akan dihasilkan, dengan meningkatnya kekasaran permukaan maka luasan permukaan pada spesimen meningkat sehingga laju korosi akan ikut meningkat.

English Abstract

The development of increasingly sophisticated technology makes the demand for material components more diverse and complex. One of the materials that is often used is metal because metal has many types and can be made according to their needs. AISI 316L stainless steel is one type of metal that is often used in the industrial world and is included in the type of stainless steel metal that has a high level of corrosion resistance. One of the applications is that 316L stainless steel is commonly used in blades and guide vanes on turbines specificly in wells turbines. Wells turbine is an energy conversion tool that converts kinetic energy from the up and down motion of sea waves into electrical energy, its application in direct contact with sea water will reduce its working life in the event of corrosion because sea water contains Cl- anions which can make corrosion worse and fast. In the machining process, stainless steel can be carried out by a face milling process which will eventually result in surface roughness. Because the surface roughness value is directly proportional to the corrosion rate, the parameters used during the face milling process will greatly affect the corrosion rate value that will be produced. One process that can minimize the increase in surface roughness is the use of the minimum quantity lubrication method as a lubricant method, this method is a lubrication method with cutting fluid which is usually based on vegetable oil using a fairly low flow rate of 50-500 ml/hour and using compressed air. so that it will produce small particles that make the lubrication more even and will later produce a lower surface roughness value. On this experiments writer using corn oil as a cutting fluid, using the minimum quantity lubrication method as a lubrication method and parameters of depth of cut 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, and 0.6 mm as independent variable. Machinery with a fixed spindle speed of 2000 rpm and a feed rate of 80 mm/min. The machining process uses a CNC HAAS VF – 2 machine which will produce a surface roughness value and will be tested with a surface roughness tester SJ – 210. Corrosion rate testing uses palm sense, which in the process uses 3 electrodes, working electrode, counter electrode, and reference electrodes. SEM photos and macro photos before and after the corrosion test were used as supporting data. The results of the study show that the depth of cut value is directly proportional to the surface roughness value, where the higher the depth of cut value, the higher the surface roughness value. Likewise with the value of the corrosion rate because the value of the corrosion rate is directly proportional to the surface roughness value. And the results of SEM photos and macro observations have supported the results of the research conducted.

Other obstract

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Item Type:	Thesis (Sarjana)
Identification Number:	621.8
Uncontrolled Keywords:	Depth of Cut, Laju Korosi, Minimum Quantity Lubrication, Minyak Jagung--Stainless Steel AISI 316L, Face Milling, Depth of Cut, Minimum Quantity Lubrication, Corrosion Rate, Corn Oil.
Subjects:	600 Technology (Applied sciences) > 621 Applied physics > 621.8 Machine engineering
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	Unnamed user with email gaby
Date Deposited:	23 Oct 2021 04:26
Last Modified:	11 Oct 2024 01:18
URI:	http://repository.ub.ac.id/id/eprint/185323

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