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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Nalar Pendidikan Jurnal Rekayasa Mesin International Journal of Applied Biology INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Ilmu Alam dan Lingkungan JURNAL PENDIDIKAN TAMBUSAI International Journal of Educational Dynamics (IJEDS) Jurnal Teknik Kimia Jurnal Teknik Mesin Journal of Applied Engineering and Technological Science (JAETS) Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Jurnal Inovasi dan Teknologi Pembelajaran (JINOTEP) Kajian dan Riset Dalam Teknologi Pembelajaran MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat BERNAS: Jurnal Pengabdian Kepada Masyarakat Teknomekanik Jurnal Aerasi PESAGI (Jurnal Pendidikan dan Penelitian Sejarah) Jurnal Vokasi Mekanika Journal Transformation of Mandalika Journal of Applied Agricultural Science and Technology OMEGA: Jurnal Keilmuan Pendidikan Matematika Ranah Research : Journal of Multidisciplinary Research and Development Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer JPFT (Jurnal Pendidikan Fisika Tadulako Online) Parabela: Jurnal Ilmu Pemerintahan & Politik Lokal
Mulianti
Universitas Negeri Padang
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Journal : Teknomekanik

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The Effect of Preheating and Non-Preheating in Cast Iron Welding Toward Mechanical Properties Sauri, Fauzan; Mulianti, Mulianti
Teknomekanik Vol. 3 No. 2 (2020): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.409 KB) | DOI: 10.24036/teknomekanik.v3i2.7272

Abstract

Cast iron material is a material that has brittle properties and is less able to withstand stress due to the welding cycle caused by flake graphite in cast iron. Because of these problems, in connecting cast iron materials using the SMAW welding method, it is necessary to have heat treatment (preheating) to avoid the welding problems on the properties of cast iron. The purpose of this study is to determine the effect of heating and non-heating on the cast iron before the welding process. Therefore, this research will play a crucial contribution as a reference for cast iron welding researchers and cast iron welding process. The method of the research was experimental research, where the measurement results were obtained directly from the specimens. The welding was using an open V seam. The specimen used was cast iron with a thickness of 8 mm. One cast iron was given heat treatment at a temperature of 260ºC and the others did not receive heat treatment before being welded. The welding process used SMAW with CIN - 2 electrodes with a diameter of 3 mm. The test used the bending test on the face specimens according to the American Welding Society D1.1 standard. The results showed that there was an effect of the preheating treatment on cast iron, which that the non-preheating specimens were easier to fracture than the preheating specimens. Thus, it can be concluded that welding with preheating is better than welding without preheating.
The effectiveness of the multi-soil-layering system in reducing pollutant parameters of crumb rubber industrial wastewater Primandari, Sri Rizki Putri; Mulianti, Mulianti; Sushanti, Gusni; Gabbasa, Mohamed; Ba-Abbad, Muneer M.
Teknomekanik Vol. 6 No. 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v6i2.27672

Abstract

Multi-soil-layering (MSL) is well-known as an emerging technology for wastewater treatment. However, limited studies have been conducted on the crumb rubber industry. Thus, this study aims to reduce the crumb rubber industrial wastewater using MSL system. Four models of MSL conducted it. They are (1) constructed by body size of gravel with a mixture of andosol soil and fine charcoal; (2) body size of gravel with a mixture of andosol soil, fine charcoal, sawdust, and iron particles; (3) tube size of gravel with a mixture of andosol soil and fine charcoal; and (4) tube size of gravel with a mixture of andosol soil, fine charcoal and sawdust. The construction models were installed in the variance of the box and each of them was flowed by the Hydraulic Loading Rate of wastewater. Aeration treatment is given to the maximum hydraulic loading rate. The result showed that MSL systems significantly minimize the crumb rubber industrial wastewater under requirements that cover Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), Total Nitrogen (T-N) and Total ammonia (T-NH3). It also significantly neutralizes the power of Hydrogen (pH) up to 6. The highest reduction was obtained by the MSL 3 system (tube size of gravel with a mixture of andosol soil and fine charcoal). The aeration significantly decreased the BOD, COD, TSS, and ammonia from 85% to 99%. Although the aeration process enhanced the performance of MSL system, however, MSL without aeration successfully treated the wastewater to meet the required standard. This study provides new insight into the effectiveness of MSL system in reducing pollutant parameters of crum rubber industrial wastewater.
Co-Authors - Primawati A. Mushawwir Taiyeb, A. Mushawwir Abd. Aziz Abdu Idham Abdul Aziz Abdul Harlan, La Ode Abdul Rahman Ade Dwi Putra Janata Agung Agatha Damanik Ahmad Fudholi Alfian Azhar Algery, Fauzan Ali Imron Ali Imron Ambiyar, Ambiyar Amdah, Misdar Andi Zulkifli Nusri Andre Kurniawan Andre Kurniawan Andre Kurniawan Arafat, Andril Arwizet Arwizet, Arwizet Asman Asman Asy Syifa Rahmah Ba-Abbad, Muneer M. BAKHRANI RAUF Bayu Bayu Berril Habibil Rizka Billyano Eko Pratama Bima Afrindo Putra Budi Santoso Budi Syahri Bulkia Rahim Delima Yanti Sari Dimas Riadi Dori Yuvenda Eko Indrawan Ema Wulansari, Rizky Faisal Mahfud Fajri Ramadhan Fathur Rahman Fauzi Frimananda Febri Prasetya Fiki Efendi Fitra Adhitya Gabbasa, Mohamed Gusni Sushanti Gusni Sushanti, Gusni Gusta Nanda Gustina Gustina Habibie, Farhan Hafiz Alfadri Ramadhan Hari Irwandi Haris Haris, Haris Harumi Veny Hasanuddin Hasanuddin Hasja, Aulia Diar Hasna Rifdah Khairunnisa Haznan Abimanyu Hendri Nurdin Hernimawati Hernimawati Heru Indra I Nyoman Murdiana Indra, Heru Irzal Irzal Irzal Irzal Jasman Jasman Joko Suprianto Julian Berlin Roland Tobing Junil Ardi Kassymova, Gulzhaina Kuralbayevna Khairani, Miranti Khairuni Delfi Anisa Krismadinata Krismadinata, Krismadinata Lesman, Indra M. Giatman Ma'rif Hidayat Miftahrur Bin Afan Muhammad Anshar Muhammad Djoni Bustan Muhammad Elfin Muhammad Ichsan Muhammad Riko Saputra Murdiana, Nyoman Nabawi, Rahmat Azis Nasrul , Nasrul Nasrul Nasrul Nizwardi Jalinus Nofri Helmi Novendri Chairul Nur, Medar M Nurdin Hendri Nurfadilah Nurfadilah NURUL HIDAYAH Nuryadin, Muhammad Taufan Oki Darwis Prima Putra Primawati Primawati, Primawati Purwantono Purwantono purwantono purwantono Qaiyimah, Dinil Rahma Musyawarah, Rahma Rahmat Rahmat Ramadhan, Anugrah Agung Ramadhan, Arya Famas Ramfit Novari Randa Avito Yasri Randy Rifnaldy Refdinal Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Resqy Dwicandra Rifai Adlani, M. Rifelino Rifelino Rifnaldy, Randy Rihan Salim, Muhamad Rodesri Mulyadi Rosmini Maru Rusdi Sahara Sahade Sahrul Saehana Salmat Salmat Salwa Chairani Sauri, Fauzan Seprianto, Ekon Sigit Dwi Lesmana Sri Haryati Sri Rizki Putri Primandari Sukri Nyompa Surya Dailiati Syahputra, Yogi Syahril Syahril Syawaldi Eka Syahputra Tamara, Yolanda Tarig Elshaarani Ta’ali, Ta’ali Titiek Deasy Saptaryani Tripaldi, Agus Venny Ventriolla Wakidi Wakidi Wakidi Wakidi Wan Nurlaila Mat Desa Waskito Waskito Waskito Waskito Waskito, Waskito Wibowo, Ariel Willyardo Putra Ramon Yolli Fernanda Yovi Ardhan Yufrizal A Yufrizal Yufrizal Yufrizal Yufrizal Yuli Nurasri Yus Donald Chaniago Yusminah Hala Zainal Abadi