ANALISIS LAJU KOROSI PIPA BAJA KARBON ST 30 DAN PIPA STAINLESS STEEL TERHADAP ASAM LIMBAH AEROBIC

SEPTIAN ADE CHANDRA, SEPTIAN ADE CHANDRA (2019) ANALISIS LAJU KOROSI PIPA BAJA KARBON ST 30 DAN PIPA STAINLESS STEEL TERHADAP ASAM LIMBAH AEROBIC. Bachelor thesis, UNIVERSITAS ISLAM MAJAPAHIT MOJOKERTO.

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Abstract

ABSTRAK Septian, Septian Ade Chandra, 2018. Analisis Laju Korosi Baja Karbon St 30 Dan Stainless steel Terhadap Asam limbah aerobic. tugas akhir, Program Studi Teknik Mesin, Fakultas Teknik Mesin, Universitas Islam Majapahit (UNIM). Pembimbing I : Achmad Rijanto, ST.,MT Pembimbing II : Dicki Nizar Z, ST., MT. Korosi merupakan kerusakan material logam yang disebabkan reaksi antara logam dengan lingkungannya yang menghasilkan oksida logam, sulfida logam atau hasil reaksi lainnya yang lebih dikenal sebagai pengkaratan. Baja adalah logam paduan dengan besi sebagai unsur dasar dan karbon sebagai unsur paduan utamanya. Kandungan karbon dalam baja berkisar antara 0.2% hingga 2.1% berat sesuai ukurannya. Penelitian ini menggunakan metode eksperimen. Objek penelitian menggunakan pipa baja karbon st 30 dengan ukuran spesimen 2,5 cm x 1,8 cm x 0,4 cm dan pipa stainless steel dengan ukuran spesimen 2,8 cm x 1,8 cm x 0,4 cm. Spesimen yang diujikan dalam penelitian ini ada 6 spesimen yang akan mendapatkan perlakuan berbeda yaitu berbeda variasi waktu. Menggunakan metode perendaman spesimen dalam wadah uji dengan volume 150 ml dari setiap wadah uji. Dilakukan uji fisik untuk mengetahui perbedaan dari baja karbon yang belum terkorosi dengan baja karbon yang terkorosi dan stainles steel yang belum terkorosi dengan stainless steel yang terkorosi, dan uji berat untuk mengetahui perbandingan berat spesimen awal dan spesimen akhir. Untuk perendaman pipa baja karbon st 30 dalam cairan limbah dengan pH 4 laju korosi terbesarnya adalah 3,6 mmpy. Sedangkan untuk perendaman pipa stianless steel dalam cairan limbah dengan pH 4 laju korosi terbesarnya adalah 0,07 mmpy. Waktu dan pH berpengaruh terhadap laju korosi. Laju korosi terbesar terjadi pada pH asam. Kata kunci : Korosi, Baja ST 30,Stainless steel, cairan limbah. ABSTRACT Septian, Septian Ade Chandra, 2018. Analysis of Corrosion Rates of St 60 Carbon Steels and tainless steel Against waste of aerobic. final project, Mechanical Engineering Study Program, Faculty of Mechanical Engineering, Majapahit Islamic University (UNIM). Counselor I : Achmad Rijanto, ST.,MT Counselor II : Dicki Nizar Z, ST., MT. Corrosion is the damage of metal material caused by a reaction between metal and its environment which produces metal oxides, metal sulfides or other reactions which are better known as rusting. Steel is a metal alloy with iron as a basic element and carbon as its main alloying element. The carbon content in steel ranges from 0.2% to 2.1% by weight according to size. This research is using experimental method. The object of the research was using carbon steel pipe st 30 with specimen size 2.5 cm x 1.8 cm x 0.4 cm and stainless steel pipe with specimen size 2.8 cm x 1.8 cm x 0.4 cm. The specimens tested in this study were 6 specimens that would get different treatments, namely different time variations. Using the specimen immersion method in a test container with a volume of 150 ml from each test container. Physical tests were carried out to determine the differences of carbon steel which had not been corroded with corroded carbon steel and stainless steel which had not been corroded with corroded stainless steel, and a weight test to determine the weight ratio of the initial specimens and final specimens. For soaking the st 30 carbon steel pipe in liquid waste with pH 4 the biggest corrosion rate is 3.6 mmpy. Where as for soaking the stianless steel pipe in liquid waste with pH 4 the biggest corrosion rate is 0.07 mmpy . Time and pH affect the corrosion rate. The greatest corrosion rate occurs at acidic pH. Keywords: Corrosion, Steel ST 30, Stainless steel, liquid waste.

Item Type: Skripsi/Thesis (Bachelor)
Uncontrolled Keywords: Korosi, Baja ST 30,Stainless steel, cairan limbah
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Mechanical Engineering
Depositing User: Perpus Unim
Date Deposited: 05 Mar 2019 06:45
Last Modified: 04 Apr 2019 02:20
URI: http://repository.unim.ac.id/id/eprint/209

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