PENGARUH PERBANDINGAN BERAT MEDIA QUENCHING DENGAN BERAT SPESIMEN UJI TERHADAP SIFAT MEKANIK BAJA KARBON SEDANG (S45C)

This study aims to analyze the mechanical properties (hardness, impact strength) of medium carbon steel (S45C)which is quantified with water cooling media. The research method used is a heated S45C Steel specimen using anelectric furnace at a temperature of 850OC for 6-8 hours with a holding time of 60 minutes. S45C steel specimens werethen quenched on water cooling media with a ratio (weight of cooling media: weight of specimens) was 2: 1, 4: 1, 6: 1, 8:1, 10: 1. Furthermore, S45C steel was tested for hardness and impact test. The conclusions of this study are: 1). Hardnessvalues are in the range of 50.4 - 56.4 HRC. The highest hardness value was in the ratio of 10: 1 at 56.4 HRC, 2). Wherethe impact strength value is in the range 4.0 - 6.1 N/mm2. The highest impact strength value at a ratio of 2: 1 is 6.1 N /mm2, and 3). The ratio of the weight / volume of the cooling media to the weight of the right specimen to producehardness and optimum impact strength is a ratio of 7: 1

PENGARUH BAHAN PEREKAT DAN PUTARAN MESIN TERHADAP KUALITAS DAN KAPASITAS PRODUKSI PAKAN AYAM MENGGUNAKAN MESIN PELET SISTEM ULIR DAYA

PENGARUH BAHAN PEREKAT DAN PUTARAN MESIN TERHADAP KUALITAS DAN KAPASITAS PRODUKSI PAKAN AYAM MENGGUNAKAN MESIN PELET SISTEM ULIR DAY

PENYEDIAAN AIR TAMBAK PADA MUSIM KEMARAU DENGAN POMPANISASI PADA TAMBAK IKAN BANDENG DI DESA BONTOMANAI

The pond is one alternative to find land use on the beach because the pond is an inland fishery that can only bedone in areas that are supported by the ease of obtaining seawater as a means of living fish. One of the fish cultivationcultivated in a pond is milkfish. "Jala Warua" Farmer Group is a group of milk fish pond farmers in Bontomanai Village,Labakkang District, Pangkep Regency. The location is 72 km from the city of Makassar. Output targets to be achievedare a). Availability of equipment that can be used to treat water pumping machines, b). Availability of 1-unit water pumpthat can add equipment to provide water in the pond, c). Availability of 1-unit irrigation pond water hose that canincrease the reach of seawater uptake to the farm, and d). At least two members of the farmer group have the knowledgeand skills in maintaining and repairing water pumping machines. The conclusion of this service is; a). Farmer groupmembers have knowledge or insight on how to operate and maintain a water pumping machine, b). Members of thefarmer group can already operate the water pumping machine, c). Members of the farmer group have one water pumpingmachine unit and a set of water pump machine maintenance and repair equipment, and d). The members of the farmergroup have been able to increase the work productivity and yield of milkfish ponds by using water pumps

PENINGKATAN PENGETAHUAN DAN KETERAMPILAN KELOMPOK TANI BONTOMATENE DALAM PENGOPERASIAN DAN PERAWATAN MESIN POMPA AIR DAN MESIN PENYEMPROT

PENINGKATAN PENGETAHUAN DAN KETERAMPILAN KELOMPOK TANI BONTOMATENE DALAM PENGOPERASIAN DAN PERAWATAN MESIN POMPA AIR DAN MESIN PENYEMPRO

PENGARUH PENAMBAHAN MINYAK KELAPA DAN AIR TERHADAP KUALITAS DAN KAPASITAS PRODUKSI PADA PEMBUATAN PELET PAKAN AYAM

PENGARUH PENAMBAHAN MINYAK KELAPA DAN AIR TERHADAP KUALITAS DAN KAPASITAS PRODUKSI PADA PEMBUATAN PELET PAKAN AYA