ANALISIS PARAMETER PEMOTONGAN TERHADAP DAYA PEMESINAN PADA PROSES FACE MILLIN…

The increasing electrical power consumption in the manufacturing industry necessitates the optimization of machining parameters to achieve higher efficiency and sustainability. Milling Process is one of the machining operations that requires relatively high power, in which cutting parameters directly influence the machining power consumption. This study aims to analyze the effects of cutting sp…

PREPARASI DAN KARAKTERISASI KOMPOSIT CUAL-LDH/HYDROCHAR DARI PENNISETUM SETAS…

A CuAl-layered double hydroxide/hydrochar (CuAl-LDH/HC) composite derived from Pennisetum setaceum was synthesized and evaluated for Congo Red (CR) removal from aqueous solutions. Hydrochar was prepared via hydrothermal carbonization and subsequently integrated with CuAl-LDH using a coprecipitation method. Structural and surface properties were characterized by XRD, FT-IR, SEM-EDX, and BET anal…

PENGARUH VARIASI KETEBALAN PELAT SS400 TERHADAP DISTORSI PADA T-JOINT MENGGUN…

Distortion is one of the main problems in welding processes that can lead to dimensional inaccuracies and reduced joint quality. Distortion occurs due to non-uniform heat distribution and the development of residual stresses during welding. This study aims to analyze the effect of SS400 low carbon steel plate thickness variation on distortion in T-joint welds using the Shielded Metal Arc Weldin…

ANALISIS KEKASARAN PERMUKAAN BAJA AISI 1045 PADA PROSES FREIS MENGGUNAKAN MAC…

Sustainability in the manufacturing industry demands the optimization of machining processes to be both environmentally friendly and cost-effective. This research aims to analyze and predict surface roughness (Ra) in the milling process of AISI 1045 steel by integrating the Minimum Quantity Lubrication (MQL) method using vegetable oil-based nanofluids and Al2O3 nanoparticles. The use of vegetab…

SPESIASI ION LOGAM CR(III) DAN CR(VI) PADA TANAMAN ECENG GONDOK (EICHHORNIA C…

Water hyacinth is a bioindicator plant that has high tolerance to metal pollutans concentration of Cr(III) and Cr(VI) metal ions species in Ogan river. Measurement of Cr(III) and Cr(VI) metal ions species has done using the concentration cell potentiometric method. This study aims to validated the method (linearity, precision, accuracy, LoD & LoQ). Applying the concentration cell potentiometric…

PENGARUH PERLAKUAN PANAS ANNEALING DENGAN TEMPERATUR 600℃ SELAMA 5 JAM TERH…

Brass (Cu–Zn) is a non-ferrous alloy widely used in engineering applications due to its workability, ductility, and corrosion resistance. However, under cyclic loading, the material is susceptible to fatigue failure. Heat treatment through annealing is commonly applied to refine the microstructure and improve ductility, yet its influence on torsional fatigue behavior remains insufficiently un…

REKAYASA MIKROSTRUKTUR BAJA 42CrMo4 MELALUI AUSTEMPER DUA TAHAP UNTUK MENINGK…

Baja 42CrMo4 mengandung karbon ~0,4 wt.% dan tergolong baja komersil paduan rendah yang banyak diaplikasikan pada komponen mesin yang mengalami regangan besar seperti gandar, batang penghubung, roda gigi, spindel, poros Perlakuan panas yang diberikan pada baja 42CrMo4 yaitu austemper dua tahap yang mana dapat digunakan untuk meningkatkan kekuatan, ketangguhan, dan fatiknya. Pengujian tarik, imp…

BIOSORPSI LOGAM BERAT (FE) PADA AIR KOLONG PASCA TAMBANG TIMAH DI PADANG BARU…

Aktivitas pertambangan timah di pulau Bangka telah lama berlangsung dan menjadi masalah utama karena menyebabkan terbentuknya kolong atau lubang-lubang besar dan merusak sifat kimia tanah berupa tingginya kandungan logam. Tingginya kadar logam perlu dinetralisir agar tidak mengganggu ekosistem, salah satunya logam berat besi (Fe). Logam berat besi (Fe) akan berbahaya jika terkonsumsi di atas ju…

KANDUNGAN LOGAM BERAT (Cd, Cu, Pb dan Hg) DAN EFEKTIVITAS PENURUNAN LOGAM BER…

Penelitian ini dilaksanakan pada bulan Desember 2007 sampai dengan bulan Mei 2008 di Laboratorium Bioproses Teknik Kimia Universitas Sriwijaya Inderalaya. Penelitian ini bertujuan untuk mengetahui kandungan logam berat pada kerang darah yang ada di perairan Sungsang serta mengetahui efektifitas perendaman cuka 25% dan pemberokan terhadap penurunan logam berat pada kerang darah. Metode ini mengg…

OPTIMASI PROSES HEAT TREATMENT BUSHING TRACKPLATE BUCKET WHEEL EXCAVATOR

Penelitian ini menyelidiki peningkatan kekerasan material bushing trackplate Bucket Wheel Excavator (BWE) berbahan AISI 4340 melalui optimasi proses perlakuan panas (heat treatment) menggunakan pendekatan metode Taguchi. Mengingat bahwa bushing trackplate dalam aplikasi penambangan memerlukan kekerasan yang optimal untuk memenuhi spesifikasi kinerja dalam menahan beban dinamis dan gesekan, pene…

ANALISIS KANDUNGAN LOGAM BERAT KADMIUM DAN TIMBAL PADA DAUN KELAPA SAWIT DI T…

MIRANTI ADILIA PERMATA. Analysis of the Heavy Metal Content of Cadmium and Lead in Palm Oil Leaves in Peat and Mineral Soil in Palm Oil Plantations, Pampangan District, Ogan Komering Ilir Regency, South Sumatra Province (Supervised by DEDIK BUDIANTA) Indonesia is the largest palm oil producing country in Asia. Palm Oil Plantations always use Fertilizer in the maintenance process so thatFFB prod…

EVALUASI HASIL FITOREMEDIASI LOGAM BESI (Fe) DAN MANGAN (Mn) MENGGUNAKAN TANA…

Coal mining activities have had both positive and negative impacts on the surrounding environment. Acid mine drainage (AMD) is a negative impact of the mining process. Acid mine drainage contains heavy metals Fe and Mn which can disrupt aquatic ecosystems. The AMD treatment is carried out by PT Bukit Asam through a Sludge Settling Pond (KPL). The treatment of AMD is divided into two methods, na…

MODELLING AND OPTIMISATION OF MILLING PROCESS ON THIN-WALLED TI64 UNDER CARBO…

This dissertation presents an in-depth investigation into the cryogenic machining performance of thin-walled Ti6Al4V (Ti64) alloy using carbon dioxide (CO₂) as a sustainable cooling medium. The research aims to improve surface quality while minimizing environmental impact by replacing conventional cutting fluids with cryogenic CO₂. Both uncoated and AlCrN-coated carbide end mills were used …

KONSENTRASI LOGAM BERAT MERKURI (Hg) PADA IKAN GULAMAH (Otolithoides pama) YA…

Sungsang’s Waters area is located in Sungsang, Banyuasin II, Banyuasin Regency, South Sumatra is an estuarine waters where most of the people work as fishermen. The many activities of the population cause the influx of heavy metal waste that can accumulate and harm aquatic biota and consumers. Mercury (Hg) that accumulates in fish eaten by humans can cause health problems and can be detected …

ANALISIS KANDUNGAN LOGAM BERAT TIMBAL (Pb) DI LAPIS OLAH TANAH ANDISOL TANAMA…

One of the factors of Andisol soil pollution in tea plantations is the presence of heavy metals (Pb) in the soil. Lead is one type of heavy metal that is not needed by plants because it can disrupt the nutrient cycle in the soil. The purpose ofthis study was to determine the content of heavy metal lead contained in Andisol soil and some soil chemical properties. This research was conducted in J…

PENGARUH INHIBITOR ALAMI DARI KULIT BUAH COKLAT TERHADAP LAJU KOROSI BAJA KAR…

Corrosion in low-carbon steels such as ST42 is a serious problem in structural applications, especially in acidic environments. The use of natural inhibitors such as brown fruit peel (Theobroma cacao L.) offers an environmentally friendly solution. This research uses a pure experimental method. ST42 steel specimens are heated to 750°C and soaked in a solution of brown fruit peel extract for 24…

PENGARUH KOMPOSISI BAHAN PADUAN ALUMINIUM, TEMBAGA, DAN SENG TERHADAP KEKERAS…

Alloyed metals play a crucial role in industry due to their superior mechanical properties compared to pure metals. One commonly used industrial metal is tin (Sn), which, despite its corrosion resistance and low melting point, exhibits relatively low hardness. To enhance its mechanical properties—particularly hardness—alloying with other metals such as aluminum (Al), copper (Cu), and zinc (…

RESISTENSI BAKTERI ENDOFIT AKAR KIAMBANG (Salvinia molesta Mitchell.) TERHADA…

Penambangan batubara merupakan komponen berpengaruh dalam menunjang ketersediaan energi yang umumnya dilakukan secara terbuka (open pit) sehingga terbentuknya air asam tambang. Logam berat yang terkandung di dalam air asam tambang salah satunya berupa unsur besi (Fe). Unsur logam Fe yang melebihi standar baku mutu akan mengancam kebersihan lingkungan dapat membahayakan manusia. Metode alternati…

KANDUNGAN KROMIUM (Cr) PADA TANAH ANDISOL DI PERKEBUNAN TEH (Camellia sinnens…

Pollution by heavy metals is one of the X important causes of decreased soil function and productivity. Cr toxicity affects plant growth and inhibits important metabolic processes. Typically Cr toxicity reduces plant growth by inducing ultrastructural modifications of cell membranes and chloroplasts, causing chlorosis in leaves. damaging cell roots reducing pigment content, disrupting the relat…

ANALISIS TEKNO SOSIO EKONOMI PENGGUNAAN BRIKET BATUBARA PADA SEKTOR INDUSTRI …

Energy source to melt the metal in the metal casting industry typically small kerosene and diesel is now more expensive price. As a resnlt most small foundry industry was forced to be closed because it is required by other energy sources and research of this thesis try to assess other fiiels cheaper for production costs cati be reduced and cati save more energy. Energy costs become quite cheap …

PENGARUH SIFAT MEKANIK DAN STRUKTUR MIKRO PADA LOGAM YANG MENGALAMI NORMALIZI…

IIeat treatment is a process in which a metal experiencecl a warming that aims to harden or soften the metal. The heat treatment process consists of normalizing, quenching, anealing and tampering. The heat treatment process used to obtain better material than the material before being subjected to heat. The heat treatment process used in this research is the use of heat treatment process of nor…

PROYEKSI PRODUKSI LOGAM DAN INVENTORI TAHUN 2013 DI PELEBURAN PT. TAMBANG TIM…

Proses pertambangan timah secara umum terdiri dari penambangan, pengolahan mineral (mineral processing), peleburan, dan pemurnian. Salah satufaktor yang mendukung keberhasilan dalam memproduksi logam timah adalah peleburan. Oleh karena itu penting untuk mengetahui proyeksi mengenai produksi logam di tahun 2013 dengan memperhitungkan material balance dan proyeksi produksi bijih timah pada tahun …

ANALISIS KANDUNGAN LOGAM KROMIUM (Cr) PADA TANAH SAWAH IRIGASI TEKNIS DI DESA…

The contamination of rice fields can be caused by several factors, including the presence of heavy metals such as chromium (Cr) in the soil. Chromium (Cr) is one of the heavy metals that can lead to environmental pollution. The objectives of this research are (1) to determine the chromium metal content in rice field soil that exceeds the threshold limit, and (2) to examine several chemical prop…

ANALISIS LOGAM BERAT MANGAN PADA AIR DI SUNGAI GASING MENGGUNAKAN METODE SPEK…

River water can contain various heavy metals, one of which is Mn. This research aims to determine the distribution and concentration levels of Mn in Gasing River water using the Atomic Absorption Spectrophotometry (AAS) method. Additionally, it aims to assess the impact of several parameters, namely temperature, depth, flow rate, pH, and dissolved oxygen (DO). The study commenced with water sam…

Pengetahuan Bahan dalam Pengerjaan Logam

Edition

Revisi

ISBN/ISSN

978-979-665-803-9

Collation

vi, 365 hlm.; 25 cm

Series Title

-

Call Number

620.16 Sch p

KANDUNGAN LOGAM BERAT TIMBAL (PB) DAN TEMBAGA (CU) PADA IKAN GLODOK (PERIOTHA…

Sungsang Coastal Waters, South Sumatra is the estuary of the Musi River which has potential for capture fisheries production. The many daily activities that people tend to carry out around the Sungsang Coast of Banyuasin, South Sumatra have the potential to reduce water quality and increase the concentration of heavy metals Pb and Cu. The purpose of this research is to analyze the concentration…

MODIFIKASI ALUMINA SILIKA DENGAN TEMPLATE EDTA SEBAGAI PENGEMBAN LOGAM Ni-Mo …

The preparation of Ni-Mo/Al2O3-SiO2 catalyst can be carried out by using Al2O3-SiO2 as the support that is modified with a variety of templates. The purpose of preparation of Ni-Mo/Al2O3-SiO2 catalyst template EDTA and Al2O3-SiO2 template EDTA to be applied to the hydrocracking process. The catalysts were characterized using XRD, PSA, FTIR, SAA, SEM-EDX, TPD-NH3, as well as analyzing the hydroc…

ANALISIS SEBARAN LOGAM BERAT KROMIUM PADA SEDIMEN SUNGAI GASING MENGGUNAKAN M…

River sediments may contain various heavy metals, one of which is Chromium (Cr). This study aims to determine the distribution by determining the concentration of Chromium (Cr) in gasing river sediments using the Atomic Absorption Spectophotometry (SSA) method and compared with the quality standard of heavy metal Chromium (Cr) in river sediments. Field analysis was conducted on physical paramet…

Teknik Pengecoran dan Perlakuan Panas untuk SMK/ MAK Kelas XII

Edition

-

ISBN/ISSN

978-979-29-6246-8

Collation

x, 182 hlm. ; 25 cm

Series Title

-

Call Number

671 Sur t

PELAPISAN LOGAM

Edition

-

ISBN/ISSN

979-587-199-4

Collation

xvi, 78 hlm. ; 24 cm.

Series Title

-

Call Number

549 Dar p