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Journal : Rekayasa Mesin

Pengaruh Parameter Pemotongan CNC Milling dalam Pembuatan Pocket terhadap Getaran dan Kekasaran Permukaan pada Crankcase Mesin Pemotong Rumput Kaisan, Idris; Rusiyanto, Rusiyanto
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.5

Abstract

The purpose of the research is to find and prove the influence of machining parameters on vibration and roughness in the pocket milling process. The experimental method is used to improve the quality of products produced by CNC milling, the parameters used in the study are spindle rotation speed with variations of 300 rpm, 1200 rpm, and 3200 rpm, the depth of feed used is 2 mm and 0.5 mm. Then the test is carried out with a vibration test and surface roughness test. The data analysis technique used is descriptive statistics. The results obtained are the use of machining parameters affect the quality of the product in terms of roughness and vibration of the engine, with higher spindle rotational speed resulting in lower roughness values. The smaller the depth of feedings, the finer the roughness, then the higher the spindle rotation speed, then vibration will be lower, then the greater the depth of feed, the higher the vibration value.
Rancang Bangun CNC Plasma Cutting Irfan, Saiful; Rusiyanto, Rusiyanto
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.1

Abstract

This study aims to determine the frame safety factor and the precision level of CNC plasma cutting results. The research method used is a research and development model, namely the French model. This model has 8 steps that are used to produce a CNC plasma cut design. The data analysis technique used is descriptive statistical analysis techniques derived from the results of tests conducted. Safety factor testing was conducted using the 2015 Autodesk Inventor software with a frame of 110.54 N. The precision cutting results were carried out three times using the same instrument, 20 currents with a speed of 400 mm/min, against ST 37 material with a thickness of 1.3 mm. The results showed that the frame was categorized as safe because the minimum safety factor value was 4.23 ul and the cut test results showed an average measurement with a maximum deviation of 0.3 mm, so it could be concluded that plasma CNC cutting had tolerance. rate of ± 0.3 mm.
Pengaruh Thermal Shock dan Komposisi Evaporation Boats, Semen Tahan Api, dan Pasir Silika terhadap Kekuatan Impact dan Foto Makro Lining Refractory Fajri, Novila Rojabni; Rusiyanto, Rusiyanto; Widodo, Rahmat Doni; Sumbodo, Wirawan; Fitriyana, Deni Fajar
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.2

Abstract

The thermal shock behavior of ceramic refractory materials is of particular interest. Refractory materials are submitted to local temperature gradients in service that originate thermal stresses and thermal shock damage to the material. However, thermal shock treatment on the refractory made from evaporation boat waste is not well documented. The purpose of this study is to determine the effect of thermal shock on the strength of refractory with various compositions. In this study, the refractory was made using 100% refractory cement (sample 1). For Sample 2, the refractory was made from a mixture of refactory cement and evaporation boats waste, each of 50%: 50%. Meanwhile, specimen 3 of the refractory is made from a mixture of refactory cement, evaporation boat waste, and silica sand of 40%: 50%: 10%, respectively. The Thermal shock treatment is carried out at a temperature range of 100 – 700oC for each specimen. The effect of thermal shock treatment on the mechanical properties of each refractory specimen was investigated using the impact and macrography test. Temperature variations in thermal shock have different effects on the level of impact strength on impact test specimens. The lowest strength was 0,012297735 J/mm2 at thermal shock 7000C in sample 3, and the highest impact strength was 0,03928934 J/mm2 at 400oC thermal shock temperature in sample 2. The macrographic examination shows the higher the thermal shock temperature, the greater the fracture produced when the impact test is carried out. This is because the hardness of the refractory material increases.
Pengaruh Thermal Shock dan Komposisi Grafit, Kaolin (Clay) terhadap Struktur Makro dan Ketahanan Impact Kowi Berbahan Dasar Limbah Evaporation Boats Nurrohmah, Sinta Indiarti; Rusiyanto, Rusiyanto; Widodo, Rahmat Doni; Sumbodo, Wirawan
Jurnal Rekayasa Mesin Vol 11, No 2 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.02.15

Abstract

The purpose of this study was to determine the effect of thermal shock and composition of graphite, kaolin (clay) on the macrostructure and impact resistance of crucible based on the waste of evaporation boats. The variation applied was composition waste of evaporation boats, graphite and kaolin 50%:25%:25%; 40%:30%:30%; 70%:15%:15%. Then the thermal shock standard temperature variation is ∆T = 100°C - 500°C. Specimens formed according to the ASTM D256 size (63.5x12.7x12.7) mm with compaction load 80 kg/cm2. Continuing the sintering process at a temperature of 1150°C holding time of 2 hours. Tests include XRD test for the waste of evaporation boats, thermal shock test, impact test and macro photo. The results showed that the highest average impact resistance is 0.01772659 Joule/mm2 with the composition of 50%: 25%: 25% without thermal shock. The lowest average resistance impact is 0.00637474 Joule/mm2 with the composition of 70%: 15%: 15% and 500°C thermal shock temperature. Based on the data, the higher treatment of temperature in thermal shock makes the lower impact resistance of the specimen.
Pengaruh Waktu Pencampuran terhadap Kekerasan Vickers Material Crucible Berbahan Limbah Evaporation Boats, Kaolin dan Semen Tahan Api Triyanto, Sandy; Rusiyanto, Rusiyanto; Widodo, Rahmat Doni; Anis, Samsudin; Fitriyana, Deni Fajar
Jurnal Rekayasa Mesin Vol 12, No 2 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.02.10

Abstract

Evaporation boat waste contains Boron Nitride (BN) and Titanium Diboride (TiB2) so that it has electrically conductive properties with high resistance to chemicals and heat. In addition, the combination of these materials has high thermal conductivity properties with a melting point of up to 2700oC and has an oxidation resistance of up to 1000oC so it is very suitable if applied to crucibles, or refractory. The purpose of this study was to determine the effect of mixing duration on the hardness of the crucible material made from a mixture of evaporation boats waste, kaolin and fire mortar SK-34. The mixing process of evaporation boats waste, kaolin and refractory cement is carried out using a mixer machine with a duration of 30, 60 and 90 minutes. The compaction process was carried out on the mixture with a force of 40 kg/cm2 to produce a cylindrical test specimen. After seven days, the specimens were sintered at 1000oC for 2 hours. The hardness test process was carried out with the FM-800 microhardness tester machine to determine the effect of mixing duration on the final product hardness. The highest hardness of 37,2 HV was found in the final product with a mixing duration of 90 minutes. The hardness of final product is increasing with an increase in mixing duration.
PENGARUH UKURAN PARTIKEL SERBUK EVAPORATION BOATS DALAM PEMBUATAN KOWI (CRUCIBLE) TERHADAP KEKUATAN IMPACT DAN STRUKTUR MAKRO Jurdan Fulandy Siswoyo; Rusiyanto Rusiyanto; Rahmat Doni Widodo; Sunyoto Sunyoto; Deni Fajar Fitriyana
Jurnal Rekayasa Mesin Vol. 14 No. 1 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i1.806

Abstract

Kowi or crucibles come from refractory materials. This study aims to determine the effect of the powder particle size of evaporation boats on impact resistance and macro structure. The research method used is experimental research. The variation applied was a variation of the particle size of the evaporation boats (80, 100, and 120 mesh) as much as 50% (grams) mixed with 25% (gram), kaolin, and 25% (gram) mortar. The mixture of these ingredients is added 15% (grams) of water from the total weight of the mixture. Mixing using a mixer for 1 hour and adding water. Then the material is put into a specimen mold with ASTM D256 standards and compacted at 60kg/cm2 using a hydraulic press. Sintering at 1000ËšC was carried out using an oven with a heating rate of 5ËšC / minute and a holding time of 2 hours. The highest impact price on average of 0.002828936 Joule/mm2 was obtained for the use of mesh 120 evaporation boats particle size and the lowest average impact price of 0.002633081 Joule / mm2 was obtained for the use of mesh 80 evaporation boats powder particle size. The macro structure of firing results and the best density is obtained from the use of the mesh 120 and 100 evaporation boats particle size and a fracture occurs on the flatter surface of the specimen than 80 and 100 evaporation boats mesh.