Analisis Kekasaran Mesin Bubut Konvensional dan CNC TU-2A Dengan Rpm 1500 Menggunakan Poros Aluminium

Conventional and CNC lathes are one of the numerical components as a production machine for manufacturing purposes that the industry relies on. To get the level of smoothness of a surface plays a very important role in the planning of a machine component, especially concerning the problem of friction, wear, resistance to fatigue as well as for surface roughness is closely related to the function of the component The manufacture of components does not merely have to have a small or smooth roughness value, but must also be in accordance with the functions and requests of the designer. TU 2A CNC lathe has a smaller roughness value (smoother) than the turning results using a conventional lathe. This is evidenced from the results of roughness testing where the smallest roughness value of the TU 2A CNC lathe is 1.27 µm and the smallest roughness value of the conventional lathe is 1.38 µm while the largest roughness value of the TU 2A CNC lathe is 2.68 µm and the surface roughness value for conventional lathes is 2.71 µm. The surface roughness class of the results of this study is in N6 to N

MODIFIKASI MESIN PAKAN TERNAK SISTEM PENGADUK SILANG

MODIFIKASI MESIN PAKAN TERNAK SISTEM PENGADUK SILAN

PELATIHAN SOSIALISASI PERAWATAN TUNE-UP GRATIS PADA MESIN TEMPEL UNTUK KENDARAAN JOHNSON DI KABUPATEN FAKFAK INDONESIA

Abstrak: Perawatan dan perbaikan merupakan suatu usaha untuk memelihara keawetan dan kesempurnaan dari suatu mesin, dimana mesin tersebut harus selalu dalam keadaan baik dan siap pakai khususnya pada mesin tempel yang telah di miliki oleh nelayan Fakfak Tengah. Johnson merupakan alat yang di gunakan nelayan untuk dijadikan sebagai kendaraan laut. Alat ini terbuat dari serat fiber dan resin ditambah dengan kayu atau pipa paralon yang dijadikan sebagai rangka-dalamnya. Kabupaten Fakfak, khususnya daerah Fakfak Tengah, dipilih oleh ketua PKM karena sebagian besar nelayan di daerah tersebut telah mempunyai sebuah kelompok yang bernama Kelompok Nelayan Fakfak Tengah.Tujuan kegiatan PKM ini adalah membangun kemampuan masyarakat nelayan untuk secara mandiri melakukan perawatan tune-up pada mesin tempel, yang mencakup penggantian busi, pelumasan luar dan dalam mesin, pembongkaran karburator juga penyetelan udara dan bahan bakar pada karburator agar putaran mesin dapat idle atau langsam. Kegiatan ini diikuti oleh 21 orang nelayan. Metode yang digunakan adalah ceramah dan aplikasi langsung dibawah arahan tim PKM. Setelah kegiatan pengabdian dilaksanakan kemampuan peserta dinilai berdasarkan jawaban mereka terhadap kuesioner. Hasilnya, sebagian besar peserta, 89,33%, mampu melaksanakan pekerjaan tersebut secara mandiri Sementara itu, hanya 10,67% yang belum mampu melaksanakan pekerjaan tersebut secara mandiri. Keywords: Maintenance and repair is an effort to maintain the durability and perfection of a machine which must always be in good condition and ready to use, especially for outboard engines that are already owned by Central-Fakfak fishermen. They use Johnson boat as transport tools in the sea. The boat is made from fiber and resin coupled with wood or paralon pipes which are used as the inner frame. Fakfak District, especially Central Fakfak area, was chosen by the head of the PKM (community service) because most of the fishermen in the area already have a group called the Central Fakfak Fishermen's Group. The aim of this PKM activity was to build the ability of fishermen-communities to independently carry out tune-up maintenance on outboard engines, which includes replacing spark plugs, lubricating the outside and inside of the engine, disassembling the carburetor as well as adjusting the air and fuel in the carburetor so that the engine speed can be idle or slow down. This activity was attended by 21 fishermen. The methods used were lectures and direct application under the direction of the PKM team. After the service activities were carried out, the participants' abilities were assessed based on their answers to the questionnaire. As a result, most of the participants, 89.33%, were able to carry out the work independently. Meanwhile, only 10.67% were unable to carry out the work independently. 

PENGARUH GEOMETRI PUNCH TERHADAP SPRINGBACK PADA PROSES AIR BENDING UNTUK MATERIAL BAJA KARBON RENDAH St. 37

PENGARUH GEOMETRI PUNCH TERHADAP SPRINGBACK PADA PROSES AIRBENDING UNTUK MATERIAL BAJA KARBON RENDAH St. 3

RANCANG BANGUN MESIN CNC ROUTER MINI UNTUK PEMBELAJARAN MAHASISWA JURUSAN TEKNIK MESIN

RANCANG BANGUN MESIN CNC ROUTER MINI UNTUK PEMBELAJARANMAHASISWA JURUSAN TEKNIK MESI

PENERAPAN PLTS RUMAH BERPANGGUNG TERAPUNG HUNIAN NELAYAN

PENERAPAN PLTS RUMAH BERPANGGUNG TERAPUNG HUNIAN NELAYA

PENGEMBANGAN DESAIN MESIN PENCAMPUR BAHAN PAKAN TERNAK

The purpose of this study is to improve the quality of mixing animal feed ingredients into more evenly distributed andmore efficient mixing time of animal feed ingredients so that quality animal feed can be obtained in a relatively shortertime compared to the mixing process which is done manually or by using a mixing machine that ever made before.The design method used is experimental research, by testing the stirring shaft rotation of 3 (kinds), namely 55 rpm, 70rpm, and 85 rpm. The volume of stirred animal feed material is 15, 16, and 17 kg with stirring time, which is 4 minutes, 5minutes and 6 minutes. From the three types of rotation variables and length of stirring time, the performance of a mixingmachine for animal feed ingredients obtained an optimization value of the process of mixing animal feed ingredientswhich gave the most optimal mixing results for the range of data studied.The results obtained showed that at 70 rpm with a duration of 5 minutes, the process of mixing animal feed ingredients asmuch as 16 kg or a production capacity of 192 kg / hour was evenly mixed. This can be used as a reference source formixing machines for animal feed. While the calculation of manufacturing costs for making 1 (one) unit mixing machinefor animal feed ingredients is Rp. 6,784,210,

PENGARUH VARIASI PARAMETER PENGELASAN (PUTARAN DAN TEMPERATUR) TERHADAP KEKUATAN SAMBUNGAN LAS HASIL FRICTION WELDING PADA BAJA KARBON RENDAH

This study aims to analyze the influence of rotation and temperature on the strength of welded joints (tensile strength and strain stress) from the result of friction welding using low carbon steel (St.42). The Friction welding process was carried out by varying the rotation (550 rpm, 1020 rpm and 1800 rpm) and temperature (750oC, 800oC and 850oC). The results of the friction welding were then examined to find out their connections strength. The initial data of this research were obtained through the testing of tensile stress and strain stress by using the tensile testing machine and the torsion testing machine. The data obtained from the tests were analyzed by using statistical methods of regression and ANOVA. The results reveal that the maximum tensile strength value ​​and the highest maximum strain stress occur at the rotation of 1800 rpm  and the temperature of 850oC. The values were: σmax = 403.80 N/mm2 and ד max = 365.89 N/mm2. The statistical analysis reveals that there is a relationship betwen the input variable X (rotation and temperature) and output  variable Y (tensile strength and strain stress