Jurnal Teknika Akademi Teknologi Warga Surakarta

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Edisi 7, Nomor 2
Judul ANALISIS WAKTU TAHAN CELUP DAN KUAT ARUS PADA PROSES ELEKTROPLATING NIKEL UNTUK PELAPISAN PLAT BAJA KARBON RENDAH
Penulis 1)Y. Yulianto K, AEB. Nusantara 2), Edy Suryono 3) 1);2);1) Jurusan Teknik Mesin, Akademi Teknologi Warga Surakarta
Abstrak

A problem in electroplating usually is the layer not spread are caused by materials quality that be processed or a problem that evoked by process in electroplating itself.

Electroplating process is veneering process that done in electrolyte solution by using
electricity current. The purpose of electroplating process besides prevent corrosion and to
increase decorative value, also aim to produce a goods that has physical character and cenain
characteristics.

This research aim is to detects layer thickness and weight of ion that precipated by nickel
veneering in carbon steel plate. Carbon steel plate that worn in this research belongs to low
carbon steel group. The low carbon steel plate is used longly 17 cm, wide 7,5 cm and with
thickness 1,2 mm. Electroplating process used nickel veneering process, as a parameter is
current intencity given 5 ampere, 7 ampere, and 9 ampere and tension are givent as 4 volt, 5 volt, and 6 volt. The other parameter is the time direction given used 15, 20 and 25 minutes.And micro structure testing is done to detect a thickness of layer.

The test of results microstructure on the first specimen with an electric current 5
amperes and 15 minutes hofling time obtained 26.92 ,um nickel layer thickness, weight of 1.22 grams of nickel and heavy ions are deposited at 1.368886 grams. In the second steel materialobtained 20 minutes detention time greater thickness is 30. 76 ,um thick, weighs 1.86 grams and the weight of nickel ions precipitated by 1.825 grams. In the third material with 25 minutes of detention time is 34.61 um for the thickness of the layer, the weight of 2. 33 grams of nickel and 2.281 grams for heavy ions are deposited during the electroplating process.

Keywords : electroplating, micro structure, nickel

Paper 7 - 2 PDF
Edisi 7, Nomor 1
Judul PENGARUH JENIS KONSTRUKSI KAIN TERHADAP KUALITAS KAIN TENUN UNTUK BAHAN SANDANG TEKSTIL
Penulis Totok Wartiono 1), dan Subiyati 2). 1)2) Progdi Teknik Kimia Teknik AT Warga Surakarta
Abstrak

Cloth construction is on catalog that use for woven cloth producer and some information and
reference for trader clothalso casterner textile clothing material. In an ordering cloth production, cloth construction is a directive when cloth produced go on also as ameasure woven cloth has been production, which where with cloth contraction be able to a quality test from woven cloth as textile clothing material.

Inside of quality test textile material clothing, consist of cloth weight test, strength full cloth test, cloth rumpled test and measurement change test after washing. While the component of woven cloth construction consist qt‘ warp compact yarn, weft compact yam, number of warp, number of weft and the width of cloth.

From the fifth component of woven cloth construction in the dijfizrent variety a woven cloth will be a chieve diflerent quality of woven cloth, the changes of cloth construction will be influence to the quality of woven cloth as an measure wouen cloth.

Key words : woven cloth Construction, quality woven cloth, textile material cloth

Paper 7 - 1 PDF
Edisi 5, Nomor 5
Judul PENINGKATAN PRODUKSI MINYAK CENGKEH DENGAN MENERAPKAN ILMU PERPINDAHAN PANAS PADA PERALATAN PENYULINGAN MINYAK ATSIRI
Penulis Sarwoko 1), Arif Setyo Nugroho 2), Martinus Heru Palmiyanto 3). 1)2)3)Jurusan Teknik Mesin,Akademi Teknologi Warga Surakarta
Abstrak

Clove oil industry , temperature dissociation energy of diatomic is principal dissociation energy of diatomic required to process distillation takeplace .In distillation can be conventional , loss of external air, temperature dissociation energy of diatomic is not paid attention . re- design is distillation device of conventional oil of clove meant to increase efficiency from the device by the way of optimal of temperature dissociation energy of diatomic yielded from fuel baking.

Redesigned technology provides installation around the boiler pipes and oil separator with a better construction material isolation having 0.02m thickness.its called a glasswool the heat conductivity of this glasswool is 0,07 W/M.K.The matrial of oil separator is stainless steel with 0.005 M thickness by isolation, The boiler pipes have low temperature gradient at each altitude distillation boiller.Obtained low temperature gradient at each boiler pippes .Steam boiler in the boiler is more secure in the oil yield could be incre sead by 4,17% .With the use of agood oil separators,clove oil can be produced much more secure oil cleane, increased by 12,51% .

Key words : Destilations,heating surface,yield,temperature gradients

Paper 5 - 5 PDF
Edisi 5, Nomor 4
Judul PENERAPAN PROSEDUR MULTIRESPONSE SIGNAL TO NOISE UNTUK MENGOPTIMALKAN PROSES PEMBUATAN GENTENG PRESS DI KUPP MEKAR SARI MAKMUR SUKOHARJO
Penulis 1)Widodo; 2)Musabbikhah; 3)Sartono Putro 1;2)Jurusan Teknik Mesin, AT.Warga Ska 3)Jurusan Teknik Mesin, Universitas Muhammadiyah Surakarta
Abstrak

The problem experienced by KUPP Mekarsari in producing pressed tile roof is the non homogen
mixtures due to the low quality of mixing process in the mixing batch, so that the setting parameter in the mixing batch must be improved. In this research, the independent variables used are: roll diameter, motor rotation, distance between the roolls and the soils compositions. The interactions between two main variables are: (1) the roll diameter and motor rotation, (2) motor rotation and the materials compositions, each interaction at two levels factor. The dependent variables are water absorbtion and flexural strength. “The smaller the better“ is the character used to minimise the water absorbtion, meanwhile to maximise the flexural strength the character  "the larger the better“ is adopted.

The results show that the contribution to minimise water absorbtion from each independent variables are as folow: roll diameter is 40.52%, motor rotation is 6.97%, the distance between the rools is 11.197% and the soils composition is 8.9%. Meanwhile the contribution to maximise the flexural strength are: roll diameter is 22.079%, motor rotation is 21.267%, the distance between the rools is 6.558% and the soils composition is 31.968%. The minimum water absorbtion at the setting of: 200 mm roll diameter, 1000 rpm motor rotation, 3 mm distance between the rolls and the soils composition of 1 clay: 0.5 sand: 0.25 Kaolin (A1B1C1D1) could be achieved to produce homogen mixture. The maximum flexural strength is required at the setting of: 225 mm roll diameter, 1250 rpm motor rotation, 5 mm distance between the rolls and the soils composition of 1 clay: 0.5 sand: 0.5 Kaolin (A2B2C2D2).

Keywords: Roll diameter, Motor rotation, Distance between the rolls, Materials composition,
Water absorption, Flexural strength

Paper 5 - 4 PDF
Edisi 6, Nomor 3
Judul PEMILIHAN TAWAS, FERRI KHLORIDA DAN FERRO SULFAT SEBAGAI ZAT KOAGULAN YANG PALING EFEKTIF DALAM PENGOLAHAN LIMBAH CAIR TEKSTIL
Penulis Totok Wartiono 1), Ainur Rosyida 2) 1),2) Jurusan Teknik Kimia, Akademi Teknologi Warga Surakarta
Abstrak

The most representative coagulant substance to be used for liquid chemical waste processing from  comprehensive textile industri is FeSO 4. It can be regarded as the most dependable because it can change the colours of liquid waste and able to reduce BOD,COD, Disolved solid substance and Suspension solid substance in a bigger amount than other coagulants. By the addition of FeSO 4 2 g/l + CaO 1 g/l + Anionik Polimer 0,125 g/l in coagulant-sedimentation waste proccess, BOD level can be reduced as much as 78 – 85%, COD 70 – 76%, Disolved Solid substance 30 – 34% and Suspension solid substance 91-95%. The use of FeSO 4 in waste processing can needs lesser time to sediment than other coagulants, its less expensive cost in waste processing, operational cost can be pressed.

Key Words : Coagulation – Sedimentation, Ferro Sulfate, coagulant, textile liquid waste.

Paper 6 - 3 PDF