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All Journal JURNAL SIMETRIK Turbo : Jurnal Program Studi Teknik Mesin INOVTEK POLBENG Abdimas Dewantara Journal of Applied Engineering and Technological Science (JAETS) JTRM (Jurnal Teknologi dan Rekayasa Manufaktur) INJECTION: Indonesian Journal of Vocational Mechanical Engineering Politeknosain

Asep Ruchiyat

Perawatan Dan Perbaikan Mesin, Politeknik Negeri Ketapang

Author-ID : 2470797

Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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Articles

PENGARUH FREKUENSI SISTEM TERHADAP KONSUMSI BAHAN BAKAR PADA BEBAN PUNCAK MESIN RUSTON 16 RKC Asep Ruchiyat
JURNAL SIMETRIK Vol 10, No 1 (2020)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Permintaan daya listrik meningkat dengan seiring bertambahnya penduduk dan penggunaan alat-alat elektronik sebagai kebutuhan primer. Pemakaian daya bertambah karena penggunaan alat elektronik seperti penanak nasi, AC, kipas angin, dan pompa air yang membuat berlebihnya daya pada beban puncak. Hal ini juga mempengaruhi pemakaian bahan bakar yang kurang efisien. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh frekuensi sistem terhadap penggunaan bahan bakar pada mesin Ruston 16 RKC pada saat beban puncak di PT. PLN (Persero) area di PL. Sukaharja Kabupaten Ketapang Kalimantan Barat. Persentase kenaikan sfc pada tanggal 25 Agustus 2018 mencapai 0,011 %/kWh. Rata-rata penggunaan pada bulan Agustus dengan jam operasi 24 jam pada mesin ruston adalah 0,271 ℓ/kWh. Rata-rata persentase penggunaan bahan bakar pada rata-rata penggunaan sfc bulan Agustus 2018 sebesar 0,0106 %/kWh. Jumlah Sfc pada tanggal 17 Juli 2018 adalah 0,322222 ℓ/kWh. Operasi pada beban puncak mengalami kenaikan pemakaian bahan bakar sebesar 0,0126 %/kWh. Selisih pada 17 Juli 2018 dan 25 Agustus 2018 sebesar 0,038928 ℓ/kWh. Rata-rata persentase kenaikan penggunaan bahan bakar pada bulan Juni yaitu 0,0113 %/kWh. Rata-rata persentase kenaikan penggunaan bahan bakar pada bulan Juli yaitu 0,0112 %/kWh. Frekuensi normal yang telah ditetapkan oleh Unit Pengatur Beban (UPB) yaitu 50.00 Hz. Namun terkadang UPB menaikkan frekuensi sistem hingga 50.20 Hz yang mempengaruhi pengoperasian mesin semakin banyak dan pemakaian bahan bakar yang banyak akibat adanya beban kejut. Apabila frekuensi sistem terlalu rendah maka akan merusak peralatan rumah tangga yang digunakan konsumen. Kondisi yang terjadi di Kabupaten Ketapang ini lebih tinggi daya nyata yang dibangkitkan daripada daya nyata yang dikonsumsi, sehingga seharusnya mesin dapat dimatikan satu atau dua unit tapi tetap beroperasi. Sehingga hal ini menjadi faktor pemborosan penggunaan bahan bakar, mesin harus tetap beroperasi walaupun tanpa beban maksimal hanya untuk mempertahankan frekuensi sistem.

Pengaruh jarak nozzle penyemprot terhadap kemampukerasan baja komersil dengan metode jominy test Yusuf Yusuf; Asep Ruchiyat; Muh Anhar
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 2 (2020): Jurnal Turbo Desember 2020
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v9i2.1304

Steel is the material most widely used in the industry. To avoid wear and tear on steel, it is necessary to do heat treatment to improve the mechanical properties of the steel according to its application in the field. The increase in hardenability in metals can be determined by doing a hardenability test, namely the Jominy test method. The Jominy test is a method to determine the hardness value of metal using ASTM standards. This research was conducted with varying the distance of the nozzle of the sprayer to the lower end of the specimen, namely 10 mm, 12.5 mm, and 14 mm with a long spraying time of 15 minutes. The heat treatment process at temperature of 780oC and 90 minutes holding time. The averagehardness value of specimen number one (10 mm spraying distance) is 45.43 kgf, specimen number two (12.5 mm spraying distance) is 45.68 kgf, and specimen number three (14 mm spraying distance) is 44.31 kgf. The highest hardness value was specimen number two, there was an increase of 1.87 kgf (4.02%), according to ASTM standards where the spraying distance was 12.5 mm.Keywords: Steel, spraying distance, Jominy test.

KAJIAN PEMANFAATAN TANDAN KOSONG KELAPA SAWIT (TANKOS) SEBAGAI KATALIS BASA PADA REAKSI TRANSESTERIFIKASI METIL ESTER Asep Ruchiyat
INOVTEK POLBENG Vol 8, No 1 (2018): INOVTEK VOL.8 NO 1 - 2018
Publisher : POLITEKNIK NEGERI BENGKALIS

The energy and fuel crisis has occurred since the late1970s. Therefore, in the early 1980, it was assumed that the fuel reserves of the non-renewable sources (petroleum-based fuels) could possibly run out and new alternative sources should be found out. Biodiesel is one alternative renewable and biodegradable energy source that is more eco-friendly compared to petroleum diesel. Statistically, based on the Anava test, the result is 5%. It is proved that the addition of concentrated ash from palm oil waste and the temperature of transesterification reaction significantly effects kinematic viscosity at 25 °C (cp), acid number (mg/gr), and sedimentary water content (%). Meanwhile, mass parameter (gr/cm3) statistically has no significant effect. The quality of methyl esters that is produces especially the parameter of acid has fulfilled the standard quality requirement of biodiesel according to SNI-04-7182-2006 althoughwater content parameter, viscosity or mass has not fulfilled SNI quality standard.

PENGARUH PENDINGINAN MEDIA AIR DAN OLI PADA HEATTREATMENT SAMBUNGAN LAS METODE SMAW TERHADAP KEKUATAN LOGAM YANG DIHASILKAN Asep AR Ruchiyat
INOVTEK POLBENG Vol 8, No 2 (2018): INOVTEK VOL.8 NO 2 - 2018
Publisher : POLITEKNIK NEGERI BENGKALIS

Abstract Welding is a method of metal extension that utilize the Penetration of heat produced. Heat and the freeze of a metal extension is a natural phenomenon, where that process works based on the difference of temperature. The cooling temperature that work so fast creating diverse structure as the result that the mechanical ability of a metal changes. This research purpose is to find out to what extent heat treatment with water and oil cooling media gives effect to the result of SMAW weld, considering processes changes in metal are very sensitive towards mechanical ability. Hardness testing in raw material that has been done gives result of 46.9 with an average hardness in the normal welding process of 48 HRB or increased by 2.34%. This value indicates that the welding process will have an impact on the increase in hardness of the weld metal. Then the weld metal heat treatment process at 850oCwith normal cooling of free air decreases the weld metal hardness by 43.5 HRB or 7.24% under raw material. While the quenching process carried out with water and oil cooler has an impact on increasing the hardness above heat treatment, normal cooling is 4.36% and 3.19% lower to the raw material. From this description it can be concluded that quench accelerates the rate of cooling and increase hardness by 4.36%. Key words: welding SMAW, heattreatment, cooling water and oil, hardness metal

Peningkatan Kompetensi Siswa SMK Negeri 2 Ketapang Jurusan Teknik Pemesinan Melalui Pelatihan Software AUTOCAD Betti Ses Eka Polonia; Yusuf Yusuf; Helanianto Helanianto; Asep Ruchiyat
ABDIMAS DEWANTARA Vol 4 No 1 (2021)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/ad.v4i1.8079

Kegiatan pengabdian masyarakat ini merupakan pengenalan dan pelatihan software AUTOCAD bagi siswa-siswi SMK Negeri 2 Ketapang. Kegiatan ini dilaksanakan oleh Prodi Perawatan dan Perbaikan Mesin Jurusan Teknik Mesin Politeknik Negeri Ketapang yang bertujuan untuk mengenalkan dan melatihkan cara penggunaan software AUTOCAD. Kegiatan ini dilakukan selama empat minggu pada bulan Oktober 2019. Kegiatan ini dilakukan melalui dua metode, yaitu, pelatihan dengan instruktur melalui tatap muka dan praktik kerja secara langsung menggunakan komputer yang telah disediakan. AUTOCAD merupakan perangkat lunak yang digunakan untuk mendesain gambar teknik, khususnya menggambar desain mesin, produk otomotif, arsitektur, peta geografis maupun konstruksi yang dioperasikan melalui perangkat komputer. Software AUTOCAD dapat membantu siswa-siswi dalam matapelajaran gambar teknik, dimana menggambar teknik sebagai salah satu kompetensi yang harus dimiliki siswa jurusan teknik pemesinan di SMK Negeri 2 Ketapang.

The Effect Of Heating Temperature On The Hardness, Microstructure And V-Bending Spring Back Results On Commercial Steel Plate Asep Ruchiyat; Muh Anhar; Yusuf Yusuf; Betti Ses Eka Polonia
Journal of Applied Engineering and Technological Science (JAETS) Vol. 1 No. 1 (2019): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

The need for low carbon steel plate sheets with relatively thin thickness measurements in Indonesia is currently quite high, especially in supporting the automotive industry, the electronics industry, the food industry, beverages, and household appliances. To fulfill this, raw materials for low carbon steel plate sheets that have high formability and are not easily cracked in critical areas of the desired model are required. For this reason, research on the effect of temperature variations in heat treatment on hardness, microstructure and spring back of V-bending results on steel plates with a plate thickness of 0.8 mm. The research method used was a laboratory experimental method. The heat treatment is carried out with temperature variations of 710, 820 and 9300C with a holding time of 60 minutes. Tests carried out on specimens are hardness testing, microstructure testing, and spring back V-bending results on steel plates. The results of this study indicate a decrease in the spring back angle where the smallest spring back angle in the bending process is on the 9300C plate which is 1,040. The value of the hardness results from V-bending has increased significantly. The increase in the value of hardness because the plate has an atom shift or dislocation by shear stress (slip) due to plastic deformation on the plate. The highest hardness value is on the 7100C plate which is 154.67 HV or has an increase of 14,291% of the pre-bending plate. The lowest hardness value is on the 9300C plate which is 125.33 HV, its hardness increases 4.4% against the pre-bending plate. Heat treatment also causes changes in the microstructure of the plates from the process of regulation and reshaping of crystals to the growth of new grains which have implications for changes in mechanical properties and formability of the workpiece.

Pendinginan Pengelasan menggunakan Metode SMAW pada Kekerasan Baja Karbon ST3 dengan Media Serbuk Semen Putih dan Beban Rockwell 100kgf Muh Anhar; Asep Ruchiyat
Jurnal Teknologi dan Rekayasa Manufaktur Vol 2 No 2 (2020): Vol 2 No 2 (2020): Volume: 2 | Nomor: 2 | Oktober 2020
Publisher : Pusat Pengembangan, Penelitian dan Pengabdian kepada Masyarat (P4M) Politeknik Manufaktur Bandung (Polman Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.48182/jtrm.v2i2.66

Welding is an inseparable part of the growth of industrial improvements because it plays a leading role in the engineering and repair of metal production.This study aims to determine the effect of cooling media on the hardness of weld metal and HAZ (heat Affected Zone) which tested hardness using the Rockwell method. This research was conducted on ST 37 low carbon steel material which was welded using 2.6 mm diameter E6013 electrode with blunt connection, then cooled using white cement powder.Welding metal cooled with white cement powder media has a harder hardness, because white cement contains C2S which is difficult to hydrate and does not have heat properties. After testing at several points, the result is an average value of raw material specimens is 48, 3 HRB, welding without isolator media = 42.96 HRB and HAZ = 46.4 HRB. Specimens using white cement powder = 47.65 HRB and HAZ = 48.2 HRB. Seen from this phenomenon and white cement has a hardness value lower than air, where the HAZ at the air value hardness was 46.4 HRB and the value of the white cement was higher at 48.2 HRB.

PENGARUH VARIASI TEMPERATUR HEAT TREATMENT TERHADAP KEMAMPUKERASAN BAJA KOMERSIL DENGAN METODE JOMINY TEST Yusuf Yusuf; Asep Ruchiyat; Irwan Susilo
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 1 No 1 (2021): Februari 2021
Publisher : Politeknik Negeri Ketapang

Hardenability is the ability of a material to be hardened to a certain depth by means of heat treatment to form martensite in the cooling process to achieve a certain hardness. One of the hardenability testing methods is the Jominy Test. The specimen is heated at the specified temperature, then cooled by spraying water at one end. After testing with the Jominy test apparatus, its hardness was measured using the hardness test equipment.The testing of Jominy is based on ASTM standard A255. Testing using specimens with a length of 100 mm, diameter 25.4 mm as much as 9 pieces. Hardness is measured by the Rockwell Hardness Test method. The test result on specimen 1 with a final temperature of 700 °c resulted in an average hardness value of 45.51 HRB, on specimen 9 with a final temperature of 1100 °c amounting to 47.32 HRB.

Rancang Bangun Unit Destilasi Solar Heater Asep Ruchiyat
Politeknosains Vol 17 No 1 (2018): Jurnal Politeknosains Volume 17 Nomor 1 - Maret 2018
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1372.542 KB)

The difficulty of the community in the coastal areas in meeting the needs of clean water until now a problem that has not been solved. An alternative effort that can be done for the provision of clean water is to utilize seawater through several processing processes. One of the practical processing and environmentally friendly way is through the process of solar energy distillation. Distillation is another term for distillation, ie the heating process of a material at various temperatures, without contact with the outside air. The purpose of this research is to know the working system of distillation of solar energy of type two roof, with working principle of destilator tool placed in place not protected by sunlight, container of destilator filled with seawater as much as 40 liters with height 10 cm from destilator container surface. Based on the analysis of research that has been done, the temperature of the environment and the temperature of the glass is not much different and the changes are directly proportional because the absorption of heat on the glass is very small. For hot water temperatures compared to ambient temperatures and glass temperatures, the temperature changes are not too fast due to the influence of water-absorbing power and the absorption of hot sand which becomes the base of the distillator, so that the water temperature is higher than the ambient temperature and the glass temperature. The faster the temperature of the environment and the temperature of the glass goes down the more clean water is produced.

PENGARUH KARBURASI ARANG TERHADAP KEMAMPUKERASAN BAJA ST 42 DENGAN METODE JOMINY Yusuf; Asep Ruchiyat; Helanianto
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 2 No 2 (2022): Agustus 2022
Publisher : Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/injection.v2i2.1013

Hardenability is the ability of a material to harden to a certain depth utilizing heat treatment to form martensiteupon cooling to achieve a certain hardness. The hardness of a metal, especially steel, can be modified withoutadding alloying elements and is done by heat treatment. Steel's hardenability value is strongly influenced by thecarbon content (carburizing) in the steel structure. Increasing the hardness of a material can be done by addingcarbon to the object's surface during heat treatment. The Rockwell Hardness Test method measures the surfaceof the hardness. The test results on the specimens showed that the carburizing process of each specimenincreased the hardness of the surface of the specimen. The distribution of hardenability values is close to alinear line, namely the heat treatment temperature 900℃

Co-Authors Helanianto Irwan Susilo Muh Anhar Polonia, Betti Ses Eka Yusuf Yusuf Yusuf

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