Analisis Pengaruh Material Abrasif dan Variasi Tekanan Sand Blasting Pada Baja ASTM A36 Terhadap Daya Lekat Coating

Candrasasi, Arvira Gusti (2018) Analisis Pengaruh Material Abrasif dan Variasi Tekanan Sand Blasting Pada Baja ASTM A36 Terhadap Daya Lekat Coating. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kegagalan utama pada material disebabkan adanya korosi. Korosi merupakan kerusakan material yang disebabkan oleh pengaruh lingkungannya, sehingga perlu dilakukan perlindungan terhadap material tersebut. Coating merupakan pelindung material yang sangat efektif dan ekonomis. Metode coating tak lepas dari berbagai hal yang mempengaruhi kualitas dan efektivitas. . Lapisan coating mengandalkan daya lekatnya untuk melindungi permukaan material. Hal yang mempengaruhi hasil coating adalah proses sand blasting. Tak hanya pemilihan material abrasif, menentukan tekanan kompresor dalam proses blasting sangat penting karena sangat berpengaruh pada tingkat kekasaran permukaan dan daya lekat coating. Penelitian ini dilakukan untuk menganalisis pengaruh variasi material abrasif dan tekanan sand blasting pada baja ASTM A36 terhadap daya lekat coating. Material baja di blasting dengan material abrasif steel grit, garnet , dan silika. Dengan masing-masing tekanan penyemprotan 3,5 bar, 4,5 bar, dan 5,5 bar. Lalu diukur nilai kekasaran permukaannya dan dilanjutkan dengan proses coating. Pada penelitian ini didapatkan hasil bahwa semakin besar tekanan yang diberikan maka permukaan akan mengalami kekasaran yang tinggi. Semakin tinggi kekasaran permukaan maka semakin tinggi pula daya lekat coating. Material abrasif steel grit dengan tekanan 5,5 bar memiliki tingkat kekasaran tertinggi mencapai 85,3 µm. Hasil pengujian daya lekat coating terbaik yaitu spesimen yang di blasting menggunakan material abrasif steel grit dengan tekanan 5,5 bar yaitu memiliki nilai sebesar 20,6 Mpa. ========== The main failure of the material is due to corrosion. Corrosion is a material damage caused by the influence of its environment, so it is necessary to protect the material. Coating method is more dominant used in industry because it is easier and more economical. But this method also can not be separated from various things that affect the quality and effectiveness. Coating layers rely on adhesion to protect the surface of the material. The thing that affects the coating result is the sand blasting process. Not only the selection of abrasive materials, determining compressor pressure in the blasting process is very important because it is very influential on the level of surface roughness and coating adhesion. This research was conducted to analyze the variation of abrasive and sand blasting pressure on ASTM A36 to the coating adhesive. The basic material of ASTM A36 plates is blasted with abrasive steel grit, garnet, and silica. With each spraying pressure, 3,5 bar, 4,5 bar, and 5,5 bar. Then measured the value of surface roughness and continued with the coating process. The results obtained that the greater the pressure that the surface will be subjected to high roughness. From the tests conducted, the results obtained that the adhesiveness increases with increasing surface roughness. Steel grit abrasive material with pressure 5,5 bar is best for ASTM A36 plates with an average surface roughness value of 85.3 µm and an average adhesion power of 20,6 MPa.

Item Type: Thesis (Undergraduate)
Additional Information: ACCESS CLOSED BY AUTHOR
Uncontrolled Keywords: Coating; Sand Blasting; Material Abrasif; Tekanan Sand Blasting; Abrasive Material; Sand Blasting Pressure
Subjects: T Technology > T Technology (General) > T55 Industrial Safety
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Candrasasi Arvira Gusti
Date Deposited: 25 Jan 2018 03:55
Last Modified: 13 Apr 2020 08:07
URI: http://repository.its.ac.id/id/eprint/50351

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