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Kun Suharno
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Automotive Engineering Education Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Journal : Journal of Mechanical Engineering

 1 
ANALISIS KEKERASAN, STRUKTUR MIKRO MATERIAL RING PISTON 5MX-E160-10 DENGAN PROSES HEAT TREATMENT Sri Widodo; Kun Suharno; Hasyim Tri Gustomo; Fuad Hilmy
Journal of Mechanical Engineering Vol 2, No 2 (2018): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v2i2.1435

Abstract

Now, many of piston ring parts have been on the market. The products are often encountered are the 5MX-E160-10 series piston ring and the SLW-E1603-20 series piston ring which have different qualities. In this study, the hardness of the two piston ring products was analyzed by heat treatment. The heat holding time was varied 15 minutes, 30 minutes and 45 minutes at 8000C and the quenching media of SAE 40 oil. The results of the hardness of the 5MX-E160-10 series raw material were 105.97 HRB and the highest hardness value after treatment decreased 34.02% were 71.95 HRB. While the hardness value of the SLW-E160-20 series raw material were 90.26 HRB and after the heat treatment has decreased by 19%, were 71.26 HRB. The best microstructure test results were found at the 30 minute holding time series 5MX-E160-10 with a temperature of 8000C and the quenching media of SAE 40 oil. In addition, the results showed that the longer holding time in the SLW-E1603-20 series resulted in decreased hardness values.
PENGARUH HEATER PADA KELEMBABAN DAN SUHU DI DALAM PROOFER TERHADAP PERKEMBANGAN ROTI Kun Suharno; Catur Pramono; Rachel Chandra Aditama; Fuad Hilmy
Journal of Mechanical Engineering Vol 3, No 1 (2019): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v3i1.1448

Abstract

In the process of making bread, proofing is important. In existing UKM, the proofing process still uses boiled water in the pan and then placed under the cupboard. Based on these problems, the author tried to examine the effect of a 100 watt heater on the humidity and temperature in the proofer on the development of bread. This study was conducted by analyzing the development of bread using variations of time 150 minutes, 160 minutes, and 170 minutes. The temperature used is 37 Celcius degree and the humidity is 94%. The volume of the dough is 191.09 cm cubics which is placed in a 40 cm x 60 cm pan and inserted into the proofer. The water used is tubular with fingers 7.5 cm and 15 cm high. A heater with 100 watt of power is placed in the water. The results showed that the effect of 37 Celcius degree on the development of bread with a time variation of 160 minutes got the best results, namely the dough can expand to 535.05 cm cubics.
ANALISIS DEBIT AIR DENGAN VARIASI BENTUK OPEN CHANNEL DENGAN PENAMPANG SEGITIGA, PERSEGI, DAN TRAPESIUM PADA SUATU ALIRAN Kun Suharno; Catur Pramono; Sigit Mujiarto; Kurniawan Setyo Anggoro
Journal of Mechanical Engineering Vol 3, No 1 (2019): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v3i1.1449

Abstract

An open channel is a channel where water flows with free water. In open channels, such as rivers (natural channels), channel parameters are very irregular. Damming the channel is a transition that serves to determine the height of the water surface along the channel, on this issue the author examines how water flows when through open channel with v-notch, rectangular and trapezoidal shapes in a stream. Based on the test results on 35° valve angle variations, the increase debit from the v-notch debit leads to a rectangular-notch debit of 23.63% and the largest decrease in debit from the rectangular notch to trapezodial-notch is 48.38%. In the valve angle variation 40°, the largest increase in debit between the v-notch discharge towards a rectangular-notch discharge of 18.64% and the decrease in the largest debit from  rectangular-notch to trapezodial-notch at 45.31%. In the valve angle variation 45° the largest increase debit between the v-notch debit towards a rectangular-notch debit is 18.64% and the largest decrease debit from the rectangular notch to trapezodial-notch debit is 46.15%.
PENGARUH VARIASI JUMLAH SUDU PADA SISTEM PEMBANGKIT LISTRIK TENAGA AIR TERHADAP DAYA YANG DIHASILKAN Sri Widodo; Kun Suharno; Sigit Mujiarto; Nazarudin Rif’at Rasyidi
Journal of Mechanical Engineering Vol 2, No 2 (2018): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v2i2.1439

Abstract

Indonesia has the potential of water that can become electricity with a hydroelectric power plant. In addition, the distribution of the PLN network has not reached all regions of Indonesia. From these problems the author made a hydropower generator by comparing the number of blades used with a number of 8, 10, and 12 pieces. This study aims to determine the power that will be generated from the number of blades. Data retrieval is done by calculating the power produced by the turbine with a variation of the test time of 20 minutes by 5x. The working principle of this tool is that the water will rotate the wheel connected to the generator with the help of shafts, bearings, pulleys, and V-belts that produce electrical power in the battery so that the electricity can be directly used. The results obtained that the output power is the largest in the use of a number of 12 pieces of blades namely 0.0687 HP, while the number of blades 8 and 10 pieces produces the amount of output power of 0.0627 HP and 0.0652 HP.
Co-Authors Catur Pramono Fuad Hilmy Hasyim Tri Gustomo Kurniawan Setyo Anggoro Nazarudin Rif’at Rasyidi Rachel Chandra Aditama Rizky Ardhi Putranto Sigit Mujiarto Sri Widodo