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Darto Darto
University of Merdeka Malang
Automotive Engineering Control & Systems Engineering

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ANALYSIS OF MICROSCOPIC WEAR ON STRAIGHT GEAR WITH ROTATION VARIATION Febri Putra Perdana; Darto Darto; I Made Sunada
TRANSMISI Vol 15, No 2 (2019): Edisi September 2019
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v15i2.4773

Abstract

Wear is an important factor in reducing the function of engine performance including limiting the service life and performance of various engine components that rub against each other directly, this results in increased maintenance costs. In this study aims to determine the rate of straight gear wear with SCM 440 material from the influence of load and shaft rotation. Experimental research methods with variables of 200 rpm, 500 rpm and 1000 rpm and load respectively 0, 5, 10 kg, from the test results obtained the highest value of power at 1000 rpm and 0 kg load, while for the lowest wear value obtained at 200 rpm and a load of 5 kg, this is due to the misalignment factor in the drive shaft and being driven, this can be seen from the average wear position located at the end of the gear that is in direct contact between the gear and the gear is moved, so that in rotation high and without loading the shaft rotation is not balanced, but at high rotation and with a certain load imbalance rotation due to misalignment can be suppressed and produce a low wear value.
Efek Parameter Feeding dan Kondisi Geometri Cutter terhadap Kekasaran Permukaan Baja ST 60 pada Proses Milling Vertikal Marianus Beatriks Djala Gili; Darto Darto; Surjedi Surjedi; Agus Iswantoko
TRANSMISI Vol 18, No 1 (2022): March 2022
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v18i1.7561

Abstract

The milling process is one type of conventional machining process that is often carried out. The surface quality of the workpiece produced in the milling process is influenced by several factors, including the speed of feeding and the condition of the cutter. The aim of this study was to determine the effect of variable feeding and cutter conditions on the surface roughness of steel in conventional milling processes. The research was conducted using an experimental method. The research object is ST 60 steel which is processed on a micron milling machine WF3 SA. The research data shows that the feeding speed affects the surface roughness quality, where the greater the feeding value, the greater the Ra value. In addition, the condition of the cutter also has an effect, where slashing using a new cutter produces a Ra value which tends to be lower than slashing using a sharpened cutter. The lowest Ra value is 0.45 m occurs at 10 mm/minute feeding using a new cutter. While the highest Ra value at 40mm/minute feeding is 1.54 m using a sharpening cutter. 
Co-Authors Agus Iswantoko Febri Putra Perdana I Made Sunada Marianus Beatriks Djala Gili Surjedi Surjedi