scholarly journals Analisa Pengaruh Variasi Media Pendingin Pada Proses HeatTreatment Metode Hardening-Tempering Material Baja S45C Terhadap Sifat Mekanik dan Struktur Mikro

2020 ◽  
Vol 15 (3) ◽  
pp. 199
Author(s):  
Aldi Wahyu Permana ◽  
Ratna Dewi Anjani ◽  
Iwan Nugraha Gusniar
Keyword(s):  
Heat Treatment ◽  
Salt Water ◽  
Coconut Water ◽  
Water Cooling ◽  
Cooling Medium ◽  
Research Activities ◽  
Hardening Process ◽  
Metal Metal ◽  
Cooling Media ◽  
Tempering Process

<p><em>In Our life, we always life with any tools and technology for improve our life. We can find many tools and other technolgy are made from metal. Of course, we need metals which have a characteristic for improve that inquiry, for example in terms of hardness in metal. Metal hardness can be increased in several ways. One of them is the hardening process. This process is a process of heat treatment of metal by heating and then cooling it to a certain temperature. In the traditional market, a lot of shredded coconut water is not used and can be used as a cooling medium in the hardening process. Therefore, the author will use the results of this wate shredded coconut water as a cooling medium for the hardening process.  Researchers  examined  the  effect  of  variations in heat  treatment  process  cooling media  on mechanical properties and microstructure with three variations of coolant. temperature 865 </em><em>⁰</em><em>C for hardening process and 465 C for tempering process. research activities include hardness and micro structure testing. The results showed that the hardening process salt water cooling medium had the highest hardness value of 275.6Hv while the lowest hardness was  obtained in the coconut water cooling medium  which had carried out the tempering process with a hardness of 219.3Hv. This is influenced by SOQ (Severity Of Quenching) or what is called the ability of the cooling media, for salt water the value is 5.0 for SOQ and for coconut water below 2.055. Meanwhile, for the microstructure, it can be seen that the hardening process brine cooling medium has a finer structure than the other cooling specimens. Meanwhile, in the tempering process, martensite turned into finer ferrite cementite with a hardness of 269.3Hv</em></p>

scholarly journals Analisis Pengaruh Media Pendingin Terhadap Kekerasan Baja S45C Pada Proses Hardening-Tempering

2021 ◽  
Vol 3 (1) ◽  
pp. 31-38
Author(s):  
Alfian Siswara Arlingga ◽  
Somawardi - ◽  
Sugianto -
Keyword(s):  
Heat Treatment ◽  
Mineral Water ◽  
Treatment Process ◽  
Salt Water ◽  
Coconut Water ◽  
Heat Treatment Process ◽  
Water Cooling ◽  
Table Salt ◽  
Hardness Level ◽  
Cooling Media

This study used an experimental method, in the form of the heat treatment hardening  930⁰C with the variations in the cooling media of the coconut water, table salt water, mineral waterwater, coolant radiator, and dromus water and variations in temperatures of tempering 200⁰C, 420⁰C, and 600⁰C, the specimens were cylindrical in diameter 25 mm and 20 mm in length, this study aims to determine the optimum hardness value of S45C steel specimens due to the heat treatment process hardening-tempering. From the results of the study, there is the effect of hardening 930⁰C there is the most optimal hardness value found in coconut water cooling media with the hardness level of 53.5 HRC. Under the influence of tempering 200⁰C there is the optimum hardness value found from the influence of mineral water cooling media with the hardness level of 50.7 HRC, while the influence of tempering 420⁰C there is the most optimal hardness value from the influence of mineral water cooling media with the hardness level of 41.8 HRC, and for tempering effect 600⁰C there is the most optimal hardness value available from the influence of the coconut water cooling media with the hardness level of 35.93 HRC.

scholarly journals Pengaruh Media Pendingin Terhadap Kekerasan Baja Tahan Karat Martensitik Type 431 Pada Proses Hardening dan Tempering

2018 ◽  
Vol 1 (02) ◽  
pp. 27-32
Author(s):  
Suyanta Suyanta ◽  
Subagiyo Subagiyo ◽  
Syamsul Hadi ◽  
Zahratul Jannah
Keyword(s):  
Stainless Steel ◽  
Stainless Steels ◽  
Air Conditioning ◽  
Cutting Tool ◽  
High Hardness ◽  
Air Cooling ◽  
Water Cooling ◽  
Cooling Medium ◽  
Hardening Process ◽  
Cooling Media

Stainless steels consist of several types such as Austenitic, Ferritic and Martensitic, Martensitic is one of the stainless steels that has a hardenability property, so it is suitable to be used as cutting tool components which require high hardness and corrosion resistance . The purpose of this study was to obtain information about the hardness of stainless steel martensitic type of hardening results with variations of cooling media. Methods of research used were experiments, ie hardening process by heating the material up to 1100oC temperature, held for 30 minutes, then cooled quickly on water, oil and the air, then heated back to 400oC temperature, cooled slowly, the results tested the hardness of Rockwell C method The results showed the type of stainless steel type martensitic 431 increased significantly after the Hardening process of 21.20 HRC before hardening, and after the hardening process to 47 , 6 HRC with water cooling, 47.9 HRC with oil cooling medium and 46.5 HRC for air cooling media, hardness after tempering down ranges from 6-7 HRC to 41.7 HRC for hardening with water cooling medium 41, 2HRC hardening results with oil cooling medium, and 40,4HRC un tuk hardening results with air conditioning medium.

scholarly journals PENGARUH QUENCHING DENGAN MEDIA PENDINGIN AIR DAN OLI TERHADAP MECHANICAL PROPERTIS BAJA S45C

JTAM ROTARY ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 183
Author(s):  
Deni Setiadi ◽  
Achmad Kusairi Samlawi
Keyword(s):  
Heat Treatment ◽  
High Hardness ◽  
Hardness Test ◽  
Water Cooling ◽  
Test Analysis ◽  
Cooling Medium ◽  
A Value ◽  
Before And After ◽  
Cooling Media

The role of steel in the industrial world today is very important, especially in terms of making components related to violence such as gears, fly wheel, axe, and so forth.This steel has a high hardness for components that require hardness, to uletan and resistance to friction. get hardness and resistance to steel hence need heat treatment process using Quenching process. The material of this research is S45C carbon steel with specimen number 1 for hardness test before treatment and after treatment with rockwell test, this process is done in Central Laboratory of FMIPA UM, unfortunate. In this process heat treatment is carried out at temperatures of 800⁰C and 900⁰C with water and oil cooling medium, from the results of comparative analysis on S45C steel before and after the treatment obtained increased hardness. This can be seen from the test analysis in which 93 kgf of hardness n is for the untreated specimens. At a temperature of 800⁰C with a water cooling medium at a crude value of 94.6 kgf, and on oil cooling medium at a hardness value of 92.5 kgf. At a temperature of 900⁰C with a water cooling medium at a hardness value of 93.5 kgf and on the oil cooling medium at a value of 93 kgf. Can be concluded from all the cooling media is the highest media water with value of violence 94.6 kgf.Keywords: S45C Steel, Quenching, Cooling

scholarly journals Pengaruh Perlakuan Temperatur dan Media Pendinginan Terhadap Sifat Ketangguhan Baja AISI 3215

Jurnal METTEK ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 23
Author(s):  
I Ketut Suarsana ◽  
IGN Nitya Santhiarsa ◽  
DNK Putra Negara
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Temperature Effect ◽  
Internal Stress ◽  
Treatment Temperature ◽  
Metal Heating ◽  
Quenching Medium ◽  
Quenching Media ◽  
Cooling Medium ◽  
Cooling Media

Perlakuan panas adalah pemanasan yang diikuti dengan penahanan dan pendinginan menggunakan media quenching. Pengerasan adalah pemanasan logam hingga suhu austenit, tahan pada suhu tersebut untuk sementara waktu dan kemudian didinginkan pada media pendinginan seperti air, minyak, udara, air garam. Untuk mengatasi perubahan sifat mekanik, perlu diberikan proses perlakuan panas. Hal ini perlu dilakukan untuk menghilangkan stress internal dan mencegah terjadinya retak atau cacat. Sifat mekanis ketangguhan adalah kemampuan material untuk menyerap energi sesaat sebelum terjadi fraktur pada struktur itu. Penelitian ini membahas tentang prediksi ketangguhan properti mekanik dengan memberikan pemanasan pada temperatur 800, 850 dan 9000C dan masing-masing specimen  diquenching dengan : air tawar, air laut dan minyak. Hasil penelitian menunjukkan bahwa terjadi peningkatan sifat ketangguhan dari efek temperatur dan media pendinginan yang digunakan. Data menunjukan pada 8000C dengan media quenching minyak nilai ketangguhan adalah 33,833 kg/cm2, serta suhu 9000C dengan quenching media air nilai ketangguhan adalah 40,8747 kg/cm2). Jadi semakin meningkat temperature perlakuan,  berpengaruh terhadap sifat ketangguhan impak bahan. Heat treatment is carried out by heating followed by anchoring and using quenching medium as cooling. Hardening is metal heating to austenite temperature, hold it at a temporary temperature and then cooled to cooling media such as water, oil, air, brine. To overcome the change of mechanical properties, need to be given process of heat treatment. This is to remove internal stress and prevent the occurrence of cracks or defects. The mechanical properties of toughness are the ability of the material to absorb energy without fracturing the structure. This study discusses the prediction of toughness of mechanical properties by heating at temperatures of 800, 850 and 9000C and each specimen quenching with: freshwater, seawater and oil. The results showed that there was an increase in the toughness properties of the temperature effect and the cooling medium used. The data show on 8000C with medium quenching oil the toughness value is 33.833 kg/cm2, and the temperature of 9000C with quenching medium water toughness value is 40.8747 kg/cm2). So the increasing of treatment temperature has influence to the material toughness

scholarly journals PENGARUH VARIASI HOLDING TIME DAN MEDIA PENDINGIN TERHADAP KEKERASAN DAN STRUKTUR MIKRO BAJA SUS 630 METODE HARDENING

JTAM ROTARY ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 149
Author(s):  
Dwi Herizen ◽  
Rudi Siswanto
Keyword(s):  
Salt Water ◽  
Hardness Test ◽  
Residual Austenite ◽  
Optical Microscope ◽  
Holding Time ◽  
Raw Material ◽  
Material Engineering ◽  
Hardening Process ◽  
Water Salt ◽  
Cooling Media

SUS 630 memiliki kekerasan 30,9 HRC dan kandungan Chromium 12% berdasarkan pemakaiannya di PT. Pupuk Kalimantan Timur merekomendasikan kekerasan sebesar 55 HRC, untuk meningkatkan kekerasan material dapat dilakukan dengan teknik material engineering yaitu Hardening. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh variasi waktu tahan dan media pendingin terhadap kekerasan dan mikrostruktur baja sus 630. Proses pengerasan dilakukan hingga mencapai suhu 1020 0C kemudian waktu tahan dengan variasi 10, 20, 30, 40, dan 50 menit kemudian dicelupkan ke dalam air, air garam, dan minyak sampai suhu kamar. Struktur mikro diuji menggunakan mikroskop optik dengan perbesaran 400x dan kekerasan menggunakan kekerasan Rockwell C dengan beban 150 kg. Pengamatan struktur mikro setelah pengerasan struktur yang terbentuk adalah bilah martenstie, sisa austenit, dan karbida logam. Hasil uji kekerasan tertinggi pada media pendingin air (34,2 HRC), air asin (34,2 HRC), dan minyak (34,1 HRC) dan bahan baku (30,9 HRC). Dari penelitian ini dapat disimpulkan bahwa proses pengerasan dapat meningkatkan nilai kekerasan. SUS 630 Steel hardness is 30.9 HRC and Chromium content is 12%, based on its use at PT. Pupuk Kalimantan Timur recommended a hardness of 55 HRC, to increase material hardness can be done by means of material engineering, namely Hardening. The aim of the study was to determine the effect of variations in holding time and cooling media on the hardness and microstructure of steel sus 630. The hardening process was carried out to reach 1020 0C then holding time with variations of 10, 20, 30, 40, and 50 minutes then dipped into water , salt water, and oil to room temperature. Microstructure was tested using an optical microscope with 400x magnification and hardness using Rockwell C hardness with a load of 150 kg. The observation of the microstructure after hardening of the structure formed is the martenstie lath, residual austenite, and metal carbide. The hardness test results were highest in water cooling media (34.2 HRC), salt water (34.2 HRC), and oil (34.1 HRC) and raw material (30.9 HRC). From this study it can be concluded that the hardening process can increase the value of violence.

scholarly journals PENGARUH MEDIA PENDINGIN PADA PROSES HARDENING TERHADAP KETANGGUHAN BAJA S45C

2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Govar Arianzas ◽  
Dody Prayitno
Keyword(s):  
Impact Strength ◽  
Vegetable Oil ◽  
Research Method ◽  
Research Result ◽  
Steel Sample ◽  
Raw Material ◽  
Water Cooling ◽  
Hardening Process ◽  
Cooling Media ◽  
The Impact

<p>The purpose of this study was to determine the effect of vegetable oil or water cooling media on the Hardening process on the value of the impact strength of S45C. The research method of the S45C steel sample was heated at 900˚C for 1 hour. The sample then in quenching the medium of water or vegetable oil is then tested for impact using the Charpy method. Research result. The value of impact strength of S45C steel is 0.416 Joule / mm2, Hardening (900˚C, 1 Hour) with Quenching Air media causing the value of impact strength to decrease from 0.416 Joule / mm2 to 0.135 Joule / mm2, Hardening (900˚C, 1 Hour) with media of Vegetable Oil Quenching causes the strength value to increase from 0.416 Joule / mm2 to 2,276 Joule / mm2, Microstructure in S45C steel "Raw Material" is ferrite and pearlite, Microstructure sample code "Quenching Air" is Martensite and Troostite, Microstructure sample code "Quenching MinyakSayur "is Bainit.<br />Keywords. Impact Strength, Hardening, Water, Vegetable Oil.</p>

scholarly journals ANALISA PENGUATAN MATA PISAU MESIN PENCACAH SAMPAH ORGANIK DENGAN PROSES HEAT TREATMENT BERTINGKAT

2021 ◽  
Vol 4 (1) ◽  
pp. 93-102
Author(s):  
Mohamad Abdul Jaelani ◽  
Muhamad Fajar Sidiq ◽  
Galuh Renggani Wilis
Keyword(s):  
Heat Treatment ◽  
Salt Water ◽  
Wear Test ◽  
Hardness Test ◽  
Industrial Sector ◽  
Test Material ◽  
Hardening Process ◽  
Average Hardness ◽  
Speed Up ◽  
Carburizing Process

Garbage has been considered useless and disgusting. The problem of pollution due to the presence of waste requires processing and management to overcome it, one of which is composting. The waste chopper is a tool that makes it easy to destroy and speed up the composting process of organic waste. The progress of the industrial sector cannot be separated from the development of the tool industry or blacksmiths, both large and small. In the manufacture of blades or blacksmith himself experienced several problems, among many consumers who complains of sharpness and strength of the blades are manufactured. There are several factors that affect the sharpness and strength of the blades, including during the heat treatment process. This study used an experimental method with ST 41 steel as the material. Carburizing process using coconut shell charcoal powder at a temperature of 875 ℃, hardness test and wear test material and the salt water quenching media. The highest average hardness test value was produced by the carburising and hardening processes with a hardness value of 599.7 VHN, while the lowest wear test value was found in the carburising and hardening process, namely 0,0000767 mm³ / kg.m.

KARAKTERISASI KEKERASAN DAN STRUKTUR MIKRO BAJA AISI 410 PADA PROSES TEMPERING DENGAN VARIASI MEDIA PENDINGIN

ROTOR ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 43
Author(s):  
Jamaludhin Rais ◽  
Sunardi Sunardi ◽  
Erny Listijorini
Keyword(s):  
Heat Treatment ◽  
Treatment Process ◽  
Martensite Lath ◽  
Heat Treatment Process ◽  
Micro Structure ◽  
Cooling Medium ◽  
Used Oil ◽  
Quenching Process ◽  
Material Sample ◽  
Cooling Media

In AISI 410 steel, the characteristic changes observed in this study were the value of hardness, and microstructure shape. Material samples heated on temperature 9000C and held for 45 minutes, with cooling medium variation used are water, used oil, and SAE 20W-50 oil. In the process, tempering the material sample returns heated on 3000C and held for 15 minutes, then cooled in the room open. The results showed that the microstructure formed in AISI 410 steel after heat treatment is martensite lath, ferrite and austenite. From the results has been obtained, that the quenching process with a variety of cooling media used and followed by the tempering process can affect the shape of the microstructure of AISI 410 steel, changes that occur are increase in the hardness value of the material. The results showed that the sample quenching water had the highest hardness is 378 HV, followed by quenching of SAE 20W-50 oil and used oil with grades of 377 and 362 HV, respectively. The increase in hardness value occurs due to changes in the micro structure that occur due to the heat treatment process. The increase in the value of hardness that occurred in the material was 143.7%.

scholarly journals Pengaruh Waktu Tahan Dan Penambahan Kadar Garam Dapur (NaCl) Dalam Media Pendingin Air Pada Proses Hardening Terhadap Sifat Mekanik Dan Struktur Mikro Baja Karbon Rendah

2019 ◽  
Vol 1 (1) ◽  
pp. 24-33
Author(s):  
Richard A.M Napitupulu ◽  
Suriady Sihombing ◽  
Charles Manurung ◽  
Jonner Togatorop
Keyword(s):  
Carbon Steel ◽  
Vickers Hardness ◽  
Salt Content ◽  
Low Carbon Steel ◽  
Water Cooling ◽  
Low Carbon ◽  
Hardening Process ◽  
Independent Variable ◽  
Cooling Media ◽  
Different Levels

This study aims to determine the effect of salt (NaCl) in water cooling media with different levels of 10%, 16% and 25% against the hardness level of low carbon steel tested with Vickers after hardening in the hardening process and to determine the proportion of media which coolant produces the highest hardness from the use of water cooling media which is added to different levels of NaCl. The independent variable in this study is the amount of salt (NaCl) dissolved in water cooling media with different percentages, namely 10%, 16% and 25%. While the dependent variable is the value of the hardness of the material tested with Vickers. Hardness in the hardening process with water cooling media which added different salt (NaCl), 10%, 16% and 25% is 185.02 VHN, 229 VHN and 284 VHN. From the results of the study it was found that there was an effect of the salt content (NaCl) in the water cooling media on the level of hardness in the hardening process of low carbon steel. Higher level of salt will increase value of hardness. The highest hardness was achieved in cooling media with a concentration of 25% NaCl that is equal to 284 VHN followed by cooling media with a concentration of 16% NaCl of 229 VHN and the lowest was a cooling medium with a concentration of 10% NaCl of 185.02 VHN.

scholarly journals Implementation of Value Engineering in Heat Treatment Process to Cooling Media Steel ST 41 at PT. XY

2021 ◽  
Vol 328 ◽  
pp. 07013
Author(s):  
Sumiati ◽  
Purwati ◽  
Isna Nugraha
Keyword(s):  
Heat Treatment ◽  
Salt Water ◽  
Low Cost ◽  
Continuous Process ◽  
Low Carbon Steel ◽  
Coconut Oil ◽  
Value Engineering ◽  
Heating Process ◽  
Low Carbon ◽  
Cooling Media

Value engineering analyzes the value and function for optimal results and the condition of the steel material remains consistent according to its quality function. ST 41 steel is a steel classified as low carbon steel with an alloy composition of 0.37-0.43%C, 0.5-0.35%Si, 0.60-0.90%Mn. Heat treatment in this study uses temperatures up to 7230C with temperature holding for one hour, while the proposed alternative cooling media used are salt water, coconut oil, and oil using the holding time of each cooling medium, namely 5 minutes, 10 minutes to 15 minutes. Cooling using 3 media simultaneously is very ineffective and very expensive. The right solution to eliminate unnecessary costs, this research proposes salt water media as a good medium for performance and relatively low cost compared to other media tested. The analysis that occurs from the calculation of the value engineering cost is IDR 45,500,000.00 the heating process in 1 month produces 5000 specimens per day, which can save costs of IDR 15,750,000.00. Thus, the brine medium is able to provide criteria for the speed of the cooling process properly and provide good quality results for a continuous process.

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