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All Journal Jurnal Ilmiah Teknik Mesin
Mohammad Badaruddin
Lampung University
Mechanical Engineering

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PENGARUH KOMPOSISI DEPOSIT NaCl/Na 2 SO TERHADAP KOROSI TEMPERATUR TINGGI BAJA AISI 4130 YANG DILAPISI ALUMINIUM 4 Yudhistyra Saputra; Mohammad Badaruddin; . Zulhanif
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
Publisher : Jurnal Ilmiah Teknik Mesin

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Steel AISI 4130 is a combination steelof 1,0 Cr-0,25 Mo-Fe that mostly used for the component heat axchanger and pipe steam   boiler. However in a high temperature and contain of corrosive gas like klor and sulfur,the endurance of the corrosion of steel AISI 4130 declines. It is important to do a research for increasing the endurance of the corrosion of the steel AISI 4130 with heated Al layered in the surface of steel AISI 4130 Al layered and oxidized in temperature 750°C during periods 1-49 jam. The calibration of the corrosion is done with the variation of deposit NaCl/Na The finding of the research shows that the existence of deposit NaCl/Na2 SO in the steel Al layered brings a large influence oxidation kinetics steel, it is proven through the largest value of parabolic constants of the steel AISI 4130 with Al layered with the comparison of deposit  NaCl/Na4(gr):30/70 is 6,89 × 10-9 g2 cm–4 s–1. Whereas the value of parabolic constants with the comparison of deposit (gr): 100/0 is 2,71 × 10 -9 g2 cm–4 s–1, 50/50 is 6,15 × 10 -9  g2 cm–4 s–12 SO24SO4 , 70/30 is 2,97 × 10 g2 cm –4 s–1 and 0/100 is around 2,60 × 10 -9  g 2 cm –4s–1. The destruction of the protective layer Al in the aluminide layer is caused by the existence of klor dan sulfur from the deposit NaCl/Na2SO4 thattriggersthe growthofiron-rich ovide (FeO).Keywords : steel AISI 4130, Al hot-dip, deposit NaCl, deposit Na2SO4 , Al2O3, iron oxide.
PENGARUH KADAR KARBON DALAM BAJA PADA PROSES PELAPISAN ALUMINIUM CELUP PANAS Mohammad Badaruddin; . Alfurkhan
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
Publisher : Jurnal Ilmiah Teknik Mesin

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Carbon steel is widely used as a component of engineering work in high temperature conditions. During the application decreases of oxidation resistance drastically. A steel coating is very needed to increase an oxidation resistance. One technique is inexpensive and used to be coating for large components are hot dip coating. This experiment  aimed to determine the effect of carbon content in steel AISI 1020, AISI 1045 and AISI 1090 against hot dip  aluminium coating on hot dip aluminium coating process and to study the influence of immersion time in the tub aluminium  molten steel on the growth of intermetallic layer. Immersion times used were 4, 9, and 16 seconds with a temperature of 700 °C. Volume composition used for each solution is 100 ml flux with three variations, namely Y1 flux ( 1.5 g KF, NaF 1.5 g, 8.5 g Borax , and 2.5 g of acetic acid ), Y2 ( 2.0 KF g, 2.0 g NaF, 9.5 g Borax, and 3.0 acetic acid ) and Y3 ( 2.5 g of KF, 2.5 g NaF, 10 g Borax, 3.5 g acetic acid ). Then do the impact test , SEM , OM and XRD. For the most thick aluminium layer was AISI 1020 steel with immersion time of 4 seconds is 0.118 mm and Fe - Al intermetallic layer ( FeAl3+Fe2Al5 ) is the thickest on AISI 1045 steel with immersion time of 9 seconds. Energy values were greatest impact on AISI 1020 steel is 187.2 J, means less carbon content of the energy generated greater impact.Keywords : Hot Dip Aluminium, CarbonSteel, Impact Energy,Fe-Al (FeAl3+Fe2Al5), Flux Variations.
KARAKTERISASI SIFAT MEKANIK DAN STRUKTUR MIKRO BAJA CARBON RENDAH UNTUK CANE CUTTER BLADE PADA PT GUNUNG MADU PLANTATION Bayu Agung Permana; Mohammad Badaruddin; . Zulhanif
Jurnal Ilmiah Teknik Mesin Vol 1, No 3 (2013)
Publisher : Jurnal Ilmiah Teknik Mesin

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Cane cutter blade (blade chopper cane), which is a tool used for chopping cane. This tool acts as a cane crusher, made of low steel carbon. Constraints that occur on Cane Cutter Blade is a high  wear rate, thus disrupting the productivity of the industry.  The company handles this problem by providing a coating on a cane cutter blade, only in this way  is still considered very less effective at. low steel carbon relatively low carbon steel.Characterization of the mechanical properties and the microstructure of low steel carbon with hardness testing and tensile testing, while the micro picture of choice to see the results of the condition of  the microstructure after a heat treatment with water as cooling media.Keywords: microstructure, cane cutter blade, low steel carbol, tensile testing, hardness testing, heat treatment.
Co-Authors . Alfurkhan . Zulhanif Bayu Agung Permana Yudhistyra Saputra