Application of Vertical Stainless-Steel Type of Steam Boiler for Home Industry of Tofu

Radi; B P Bairawa; R F Putra; P Triwitono;  Marheriyanto

doi:10.1088/1755-1315/757/1/012068

Modifikasi Steam Boiler pada Alat Sterilisasi untuk Minimasi Kontaminan Mikroba Media Tumbuh Jamur (Baglog)

Jurnal Riset Teknologi Industri ◽

10.26578/jrti.v11i2.3395 ◽

2017 ◽

Vol 11 (2) ◽

pp. 131-138

Author(s):

Hermanto ,SP

Keyword(s):

Stainless Steel ◽

Steam Boiler ◽

Water Tube

Pada umumnya petani jamur dalam melakukan proses sterilisasi masih menggunakan alat sederhana berupa bejana dari drum bekas yang dipanaskan dengan tungku/gas elpiji, sehingga suhu tidak tercapai (< 100 oC), waktu pemanasan terlalu lama (6-8 jam) dan lebih 30% terkontaminasi oleh jamur liar. Tujuan dari modifikasi alat ini adalah mengetahui suhu dan tekanan yang optimal pada proses sterilisasi media tumbuh jamur (Baglog), sehingga kontaminasi jamur liar dapat berkurang, kapasitas produksi dapat ditingkatkan dan waktu sterilisasi baglog dapat dipersingkat. Metode yang digunakan adalah pertama melakukan desain gambar alat, kemudian pembuatan alat, uji coba dan unjuk kerja alat. Modifikasi Alat, terdiri dari 2 (dua) Unit yaitu Boiler dan Sterilisator. Boiler adalah bejana tertutup dimana panas pembakaran dialirkan ke air sampai terbentuk air panas atau steam, kemudian digunakan untuk mengalirkan panas ke suatu proses. Unit boiler yang digunakan tipe Water Tube Boiler, tipe ini air umpan boiler mengalir melalui pipa–pipa masuk ke dalam bejana. Air yang tersikulasi dipanaskan oleh gas pembakar membentuk steam pada daerah uap dalam bejana. Unit boiler terbuat dari plat baja tebal 3,5 mm, tinggi 125 cm dan diameter 57 cm, dilengkapi dengantermometer,presure gauge,savety valve,kran pengalir uap panas. Bagian dalam bawah terdapat pipa pemanas air dari pipa schedule 1 inch, yang dipasang horizontal 20 buah. Di bagian samping dipasang pipa kaca tebal 5 mm untuk memantau level air. Kaki dari besi baja Kanal U/ UNP tinggi 30 cm. Sterilisator atau autoklaf ; alat pemanas tertutup untuk mensterilisasi suatu benda menggunakan uap bersuhu dan bertekanan tinggi (1210C, 15 lbf/in2) selama kurang lebih 15 menit. Suhu yang tinggi inilah yang akan membunuh microorganisme. Unit sterilisator dari plat stainless steel tebal 2 mm, tinggi 150 cm dan diameter 120 cm. Bagian dalam diberi plat stainless steel vorporasi tebal 1,3 mm dan rak dorong dari kawat stainless steel setinggi 27 cm. Bagian atas dipasang termometer. Kaki dari baja siku setinggi 50 cm. Hasil uji coba unjuk kerja alat diperoleh kapasitas stelisator 350-500 baglog, suhu berkisar 100-120 0C tekanan 1,5-1,9 bar, waktu tercapainya suhu pada alat 2-3 jam.

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Estimation of Some Mechanical Properties for Similar & Dissimilar Welded Joints

Wasit Journal of Engineering Sciences ◽

10.31185/ejuow.vol2.iss1.24 ◽

2014 ◽

Vol 2 (1) ◽

pp. 59-76

Author(s):

Abdullah Daie'e Assi

Keyword(s):

Stainless Steel ◽

Carbon Steel ◽

Austenitic Stainless Steel ◽

Base Metal ◽

Welded Joints ◽

Plate Thickness ◽

Low Carbon Steel ◽

Dissimilar Metals ◽

Low Carbon ◽

Steel Type

This research deals with the choice of the suitable filler metal to weld the similar and dissimilar metals (Low carbon steel type A516 & Austenitic stainless steel type 316L) under constant conditions such as, plate thickness (6 mm), voltage (78 v), current (120 A), straight polarity. This research deals with three major parts. The first parts Four types of electrodes were used for welding of dissimilar metals (C.St A516 And St.St 316L) two from mild steel (E7018, E6013) and other two from austenitic stainless steel (E309L, E308L) various inspection were carried out include (Visual T., X-ray T., δ- Ferrite phase T., and Microstructures T.) and mechanical testing include (tensile T., bending T. and micro hardness T.) The second parts done by used the same parameters to welding similar metals from (C.St A516) Or (St.St 316L). The third parts deals with welding of dissimilar weldments (C.St And St.St) by two processes, gas tungsten are welding (GTAW) and shielded metal are welding (SMAW). The results indicated that the spread of carbon from low carbon steel to the welding zone in the case of welding stainless steel elect pole (E309L) led to Configuration Carbides and then high hardness the link to high values compared with the base metal. In most similar weldments showed hardness of the welding area is higher than the hardness of the base metal. The electrode (E309L) is the most suitable to welding dissimilar metals from (C.St A516 With St.St 316L). The results also showed that the method of welding (GTAW) were better than the method of welding (SMAW) in dissimilar welded joints (St.St 316L with C.St A516) in terms of irregular shape and integrity of the welding defects, as well as characterized this weldments the high-lift and resistance ductility good when using the welding conditions are similar.

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AK STEEL TYPE 304L

Alloy Digest ◽

10.31399/asm.ad.ss1324 ◽

2020 ◽

Vol 69 (8) ◽

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Corrosion Resistance ◽

Heat Treating ◽

Stress Relief ◽

Carbide Precipitation ◽

Low Carbon ◽

Steel Type ◽

Temperature Performance ◽

Type 304

Abstract AK Steel Type 304L is a chromium-nickel austenitic stainless steel. It is an extra low-carbon variation of Type 304 with a 0.030% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the “as-welded” condition, even in severe corrosive conditions. In many cases it eliminates the necessity of annealing weldments except for applications specifying stress relief. Type 304L has slightly lower mechanical properties than Type 304. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance, corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1324. Producer or Source: AK Steel Corporation.

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AK STEEL TYPE 304

Alloy Digest ◽

10.31399/asm.ad.ss1317 ◽

2020 ◽

Vol 69 (5) ◽

Keyword(s):

Stainless Steel ◽

Carbon Content ◽

Atmospheric Corrosion ◽

Carbide Precipitation ◽

Steel Grade ◽

Good Resistance ◽

Steel Type ◽

Temperature Performance ◽

Type 304 ◽

Lower Carbon

Abstract AK Steel Type 304 is a chromium-nickel austenitic stainless steel. It is a variation of the base 18-8 grade, but with higher chromium and lower carbon content. The lower carbon content minimizes carbide precipitation due to welding and reduces its susceptibility to intergranular corrosion. Type 304 is the most versatile and widely used stainless steel grade. It combines good resistance to atmospheric corrosion and to many chemicals, food, and beverages. It has excellent formability. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming and joining. Filing Code: SS-1317. Producer or source: AK Steel Corporation. Originally published April 2020, corrected May 2020.

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Effects of irradiation temperature on tritium retention in stainless steel type 316L

Fusion Engineering and Design ◽

10.1016/j.fusengdes.2021.112436 ◽

2021 ◽

Vol 169 ◽

pp. 112436

Author(s):

Masao Matsuyama ◽

Hideki Zushi ◽

Kazuaki Hanada ◽

Yasuhisa Oya ◽

Yuji Hatano

Keyword(s):

Stainless Steel ◽

Irradiation Temperature ◽

Steel Type ◽

Type 316L

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The effect of proof testing on the shakedown behaviour of pressure vessel nozzles

The Journal of Strain Analysis for Engineering Design ◽

10.1243/03093247v292081 ◽

1994 ◽

Vol 29 (2) ◽

pp. 81-92 ◽

Cited By ~ 3

Author(s):

N I Crawley ◽

D N Moreton ◽

D G Moffat ◽

A F Tolley

Keyword(s):

Stainless Steel ◽

Internal Pressure ◽

Pressure Vessel ◽

Steel Type ◽

Pressure Cycling ◽

Proof Testing ◽

Pressure Tests ◽

Test Pressure ◽

Design Pressure

Cyclic internal pressure tests were conducted over several hundreds of cycles at pressures up to and in excess of the calculated proof test pressure on two nominally ‘identical’, stainless steel type 316 flush 90 degrees pressure vessel nozzles, designed and manufactured to BS 5500. Prior to this pressure cycling, one vessel was subjected to the required proof test of 1.25 times the design pressure. Significant incremental straining was recorded in the non-proof tested vessel during cycling at all pressures above the first yeild pressure (0.336 × design pressure). For the proof tested vessel significant incremental straining was not recorded during cycling until 15 percent above the design pressure.

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Inhibition Effect of N, N'-Dimethylaminoethanol on the Pitting Corrosion Austenitic Stainless Steel Type 304

Materials Science ◽

10.5755/j01.ms.21.4.8977 ◽

2015 ◽

Vol 21 (4) ◽

Cited By ~ 1

Author(s):

Roland Tolulope LOTO ◽

Cleophas Akintoye LOTO ◽

Patricia Abimbola POPOOLA ◽

Tatiana FEDOTOVA

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Pitting Corrosion ◽

Inhibition Effect ◽

Steel Type ◽

Type 304

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Comparison of Vacuum Sintered and Selective Laser Melted Steel AISI 316L

Archives of Metallurgy and Materials ◽

10.1515/amm-2017-0314 ◽

2017 ◽

Vol 62 (4) ◽

pp. 2125-2131 ◽

Cited By ~ 3

Author(s):

Z. Brytan

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Austenitic Stainless Steel ◽

Selective Laser Melting ◽

Strength Properties ◽

Laser Melting ◽

Charpy Test ◽

Steel Type ◽

Type 316L ◽

Static Tensile

AbstractThe paper presents the results of the basic mechanical properties determined in the static tensile test, impact un-notched Charpy test and hardness of austenitic stainless steel type 316L produced by two techniques: classical pressing and sintering in a vacuum with rapid cooling and selective laser melting (SLM). In this work fracture surface of Charpy test, samples were studied.The results indicate that application of selective laser melting (SLM) makes it possible to double increase the strength properties of components manufactured from austenitic stainless steel type 316L compared to sintering in a vacuum. Resulted in mechanical properties strongly depend on porosity characteristic and the presence of superficial oxides in the case of sintered steel and the character of observed microstructural defects deriving from non-fully melted powder particles and the formation of voids between subsequently melted pool tracks during the SLM.

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