Yahya, Muchtar (2020) PERANCANGAN SCREW CONVEYOR UNTUK MEMINDAHKAN MATERIAL Cu-Sn 10% PADA PRODUKSI FRANGIBLE BULLET. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Salah satu alat materials handling yang digunakan untuk proses
pemindahan (moving) adalah screw conveyor. Screw conveyor ini terdiri dari
baja yang memiliki bentuk spiral yang tertancap pada poros dan berputar
dalam suatu saluran berbentuk U (through) tanpa menyentuhnya sehingga
flight (daun screw) mendorong material ke dalam trough. Poros digerakkan
oleh motor listrik. Workshop frangible bullet yang berada di bawah naungan
Departemen Teknik Material dan Metalurgi ITS memproduksi Frangible
bullet yang dalam prosesnya membutuhkan screw conveyor untuk
memindahkan campuran serbuk tembaga dan timah (Cu-Sn10%wt) ke mesin
kompaksi untuk proses kompaksi.
Dalam penelitian ini desain screw conveyor berdasarkan standar
perhitungan dari Conveyor Equipment Manufacturers Association (CEMA).
Kemudian dilakukan juga penelitian untuk mengetahui defleksi sehingga
screw conveyor aman beroperasi.
Dari penelitian ini didapatkan desain screw conveyor dengan
komponen-komponen penting sebagai berikut: Helicoid Conveyor screw
standar CEMA dengan designation 6H312, Daya motor 0,25 HP, Transmisi
worm gear dengan reduction ratio 50, Transmisi Belt dan Pulley dengan
diameter 3 in dan 6 in, Poros Standar dengan panjang 17 in, poros drive
dengan panjang 12 in, flange ball bearing dengan diameter 1,5. in software
AutoCAD sehingga didapatkan gambar teknik rancangan desain screw
conveyor.
Dari penelitian ini didapatkan juga nilai defleksi hasil perhitungan
teoritis sebesar 0,0826 in dan hasil simulasi sebesar 0,1185 in. kedua nilai
tersebut dibawah dari 0,25 in yang merupakan batas maksimal defleksi yang
v
diijinkan. Oleh karena itu screw conveyor aman dari gesekan dengan
chasing.
Dari penelitian ini didapatkan juga nilai Von Misses Stress
maksimum hasil simulasi sebesar 159,2 Psi. Nilai Von Misses Stress
maksimum dibawah dari 24995,66 Psi yang merupakan nilai yield strength
dari stainless steel, sehingga helicoid conveyor screw aman.
Kata kunci : Screw Conveyor, CEMA, AutoCAD, Defleksi, Von Misses
Stress
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One of the material handling tools used for the moving process is
the screw conveyor. This screw conveyor consists of steel that has a spiral
shape embedded in the shaft and rotates in a U-shaped channel (through)
without touching it so that the flight, pushes the material into the trough.
The shaft is driven by an electric motor. The frangible bullet workshop under
the auspices of the Department of Materials and Metallurgical Engineering
of ITS, produces Frangible bullets which in the process require a screw
conveyor to transfer a mixture of copper and tin powder (Cu-Sn10% wt) to
an compaction machine for the compacting process.
In this study, the screw conveyor design was based on the
calculation standards of the Conveyor Equipment Manufacturers
Association (CEMA). Then an analysis is also carried out to see the
deflection so that the screw conveyor is safe.
From this research, the design of the screw conveyor with the
following important components is obtained: Standard CEMA Helicoid
Conveyor screw with the designation 6H312, motor power of 0.25 HP,
transmission of worm gear with a reduction ratio of 50, Transmission Belt
and Pulley with a diameter of 3 in and 6 in. , Standard shaft 17 in long, drive
shaft 12 in length, flange ball bearing 1.5 in diameter. in the AutoCAD
software to obtain a technical drawing of the screw conveyor design.
From this research, it is also found that the deflection value of the
theoretical calculation is 0.0826 in and the simulation result is 0.1185 in
both of these values is below 0.25 in which is the maximum allowable
deflection limit. Therefore, the screw conveyor is safe from friction with the
chasing.
From this research, it is also found that he maximum Von Misses
Stress value of the simulation results was 159.2 psi. The maximum Von
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Misses Stress value is below 24995.66 psi which is the yield strength value
of stainless steel, so the helicoid conveyor screw is safe.
Keywords: Screw Conveyor, CEMA, AutoCAD, Deflection, Von Misses
Stress
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Kata kunci : Screw Conveyor, CEMA, AutoCAD, Defleksi, Von Misses Stress Keywords: Screw Conveyor, CEMA, AutoCAD, Deflection, Von Misses Stress |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muchtar Yahya |
| Date Deposited: | 03 Sep 2020 05:07 |
| Last Modified: | 10 Jan 2024 16:14 |
| URI: | http://repository.its.ac.id/id/eprint/81745 |
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