PENGARUH KUAT ARUS PADA PENGELASAN PADUAN ALUMINIUM 6061 DENGAN MENGGUNAKAN METODE LAS TIG TERHADAP KEKERASAN DAN STRUKTUR MIKRO

The objective of research was to find out the effect of current on microstructure and hardness value in Aluminium Alloy 6061 before (raw material) and after welding using Tungsten Inert Gas (TIG) welding method with filler rod ER4043. This research uses experiment methods. Technique of analyzing data used was a descriptive comparative research. The instruments used for testing microstructure and hardness were Olympus Metallurgical Microscope and Vikers Hardness Tester. Base on the result of research, it could be concluded that the result of microstructure testing showed the reduced Mg2Si phase width after welding. In raw material, the Mg2Si phase seemed to diffuse surrounding the α-Al phase surface, but the result of welding using TIG welding method with current of I00 A, 110 A, and 115A showed that Mg2Si phase reduced in each specimen, so that α-Al phase was very dominant. The hardness value of hardness result showed the different hardness level. The specimen with current of 110A had higher hardness level of 65.4 VHN than the specimen with current of 100 A (55.7 VHN) and 115 A (55.9 VHN). The result of hardness testing on raw material was 120.4 VHN. This research showed that the welding using varying current changed microstructure and affected the hardness value of Aluminum Alloy 6061.

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THE EFFECT OF VARIATION OF ELECTRIC CURRENT ON MICRO STRUCTURE AND HARDNESS IN SS400 STEEL WELDING PROCESS USING THE SMAW METHOD

Journal of Mechanical Engineering and Vocational Education (JoMEVE) ◽

10.20961/jomeve.v1i2.27226 ◽

2019 ◽

Vol 1 (2) ◽

pp. 81

Author(s):

Irfan Adi Wibowo ◽

Suharno Suharno ◽

Indah Widiastuti

Keyword(s):

Alloy Steel ◽

Arc Welding ◽

Comparative Research ◽

Welding Process ◽

Raw Material ◽

Shielded Metal Arc Welding ◽

Hardness Level ◽

Hardness Tester ◽

Metal Arc Welding ◽

Ferrite Structure

The objective of research was to find out the effect of current on microstructure and hardness value in Alloy Steel SS400 before (raw material) and after welding using Shielded Metal Arc Welding (SMAW).This research uses experiment methods. Technique of analyzing data used was a descriptive comparative research. The instruments used for testing microstructure and hardness were Olympus Metallurgical Microscope and Vickers Hardness Tester.Base on the result of research, it could be concluded that the result of microstructure testing showed the improved ferrite structure after welding. In raw material, ferrite structure seemed to looks evenly, but the result of welding using SMAW welding method with current of I20 A, 130 A, and 140A showed that ferrite structure reduced in each specimen, so that perlite structure was very dominant. The hardness value of hardness result showed the different hardness level. The specimen with current of 140 A had higher hardness level of 231,055 VHN than the specimen with current of 120 A (219.222 VHN) and 130 A (223,333 VHN). The result of hardness testing on raw material was 182,333 VHN. This research showed that the welding using varying current changed microstructure and affected the hardness value of Alloy Steel SS400.

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THE EFFECT OF CURRENT VARIATION ON MICRO STRUCTURE AND HARDNESS IN ALLOYSTEEL SS400 WELDING PROCESS USING SMAW METHOD

Journal of Mechanical Engineering and Vocational Education (JoMEVE) ◽

10.20961/jomeve.v2i1.27332 ◽

2019 ◽

Vol 2 (1) ◽

pp. 8

Author(s):

Irfan Adi Wibowo

Keyword(s):

Alloy Steel ◽

Comparative Research ◽

Welding Process ◽

Raw Material ◽

Shielded Metal Arc Welding ◽

Hardness Level ◽

Hardness Tester ◽

Metal Arc Welding ◽

Ferrite Structure ◽

Current Variation

This research aims to find out the effect of current on microstructure and hardness value in Alloy Steel SS400 before (raw material) and after welding using Shielded Metal Arc Welding (SMAW). This research uses experiment methods. Technique of analyzing data used was a descriptive comparative research. The instruments used for testing microstructure and hardness were Olympus Metallurgical Microscope and Vikers Hardness Tester. Base on the result of research, it could be concluded that the result of microstructure testing showed the improved ferrite structure after welding. In raw material, ferrite structure seemed to looks evenly, but the result of welding using SMAW welding method with current of I20 A, 130 A, and 140A showed that ferrite structure reduced in each specimen, so that perlite structure was very dominant. The hardness value of hardness result showed the different hardness level. The specimen with current of 140 A had higher hardness level of 231,055 VHN than the specimen with current of 120 A (219.222 VHN) and 130 A (223,333 VHN). The result of hardness testing on raw material was 182,333 VHN. This research showed that the welding using varying current changed microstructure and affected the hardness value of Alloy Steel SS400.

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STRUKTUR MIKRO DAN KEKERASAN BAJA S45C PADA PENGELASAN SMAW DENGAN VARIASI MEDIA QUENCH

Jurnal Ilmiah Pendidikan Teknik dan Kejuruan ◽

10.20961/jiptek.v12i1.28916 ◽

2019 ◽

Vol 12 (1) ◽

pp. 30

Author(s):

Nizam Effendi

Keyword(s):

Comparative Research ◽

Raw Material ◽

Shielded Metal Arc Welding ◽

Hardness Tester ◽

Quenching Media ◽

Average Hardness ◽

Metal Arc Welding ◽

Experiment Method ◽

Water Media ◽

Martensite Structure

The purpose of this research is to find out the effect of current on microstructure and hardness value in S45C steel before (raw material) and after welding using Shielded Metal Arc Welding (SMAW). This research using experiment method. The Technique of data analysis using descriptive comparative research. The instruments that used for testing microstructure and hardness is Olympus Metallurgical Microscope and Vickers Hardness Tester. Based on the results of the research conclude that (1) the results of the microstructure testing showed the improved martensite structure after welding. In the raw material, martensite structure didn’t exist but the result of SMAW welding methods using quenching media of water, oil, and air that showed martensite structure was exist. (2) The hardness value of raw material is 232 VHN. The specimen with water media had highest average hardness value that is 411 VHN, oil media had average hardness value that is 308 VHN, air media had lowest average hardness value that is 263 VHN. This research showed that the result of SMAW welding using varying quenching media can changed the microstructure and hardness of S45C steel.

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THE EFFECT OF QUENCHING MEDIA VARIATIONS ON MICRO STRUCTURE AND VIOLENCE OF THE S45C STEEL STEEL WELDING RESULTS

Journal of Mechanical Engineering and Vocational Education (JoMEVE) ◽

10.20961/jomeve.v2i1.27328 ◽

2019 ◽

Vol 2 (1) ◽

pp. 1

Author(s):

Bagus Supriyadi Nur Haq

Keyword(s):

Comparative Research ◽

Raw Material ◽

Shielded Metal Arc Welding ◽

Hardness Tester ◽

Quenching Media ◽

Average Hardness ◽

Metal Arc Welding ◽

Experiment Method ◽

Water Media ◽

Martensite Structure

The purpose of this research is to find out the effect of current on microstructure and hardness value in S45C steel before (raw material) and after welding using Shielded Metal Arc Welding (SMAW). This research using experiment method. The Technique of data analysis using descriptive comparative research. The instruments that used for testing microstructure and hardness is Olympus Metallurgical Microscope and Vickers Hardness Tester. Based on the results of the research conclude that (1) the results of the microstructure testing showed the improved martensite structure after welding. In the raw material, martensite structure didn’t exist but the result of SMAW welding methods using quenching media of water, oil, and air that showed martensite structure was exist. (2) The hardness value of raw material is 232 VHN. The specimen with water media had highest average hardness value that is 411 VHN, oil media had average hardness value that is 308 VHN, air media had lowest average hardness value that is 263 VHN. This research showed that the result of SMAW welding using varying quenching media can changed the microstructure and hardness of S45C steel.

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Development of an advanced A-TIG (AA-TIG) welding method by control of Marangoni convection

Materials Science and Engineering A ◽

10.1016/j.msea.2007.10.116 ◽

2008 ◽

Vol 495 (1-2) ◽

pp. 296-303 ◽

Cited By ~ 83

Author(s):

Hidetoshi Fujii ◽

Toyoyuki Sato ◽

Shanping Lu ◽

Kiyoshi Nogi

Keyword(s):

Marangoni Convection ◽

Tig Welding ◽

Welding Method

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EVALUASI BESAR BUTIR TERHADAP SIFAT MEKANIS CuZn70/30 SETELAH MENGALAMI DEFORMASI MELALUI CANAI DINGIN

POROS ◽

10.24912/poros.v12i1.685 ◽

2017 ◽

Vol 12 (1) ◽

pp. 58

Author(s):

Riyan Sanjaya ◽

Eddy S Siradj

Keyword(s):

Mechanical Properties ◽

Cold Rolling ◽

Tensile Test ◽

Tensile Testing ◽

Rolling Process ◽

Raw Material ◽

Hardness Testing ◽

Plastic Properties ◽

Fine Microstructure ◽

The Many

Abstract: The research was conducted because of the many industries that use CuZn 70/30 as a raw material in industrialization. CuZn 70/30 was studied to obtain the strong mechanical properties of brass. Research CuZn 70/30 was evaluated using a process of heating of about 6150 ± 50C and then held for 90 minutes. The next process is the process of cold rolling by using a variety of reduction and then tested by using a Vickers hardness testing, tensile testing, observation of the microstructure. The result of this research is a fine microstructure (below 10 μm), hardness (HV 211.67). Tensile test also conducted to get how much resistance CuZn 70/30 to resist the pull. The cold rolling process causing the decrease the mechanical properties and also increase the plastic properties of the brass.

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Hardness Testing of Vulcanized Rubber. II. Comparisons of Readings of Various Instruments

Rubber Chemistry and Technology ◽

10.5254/1.3546634 ◽

1944 ◽

Vol 17 (1) ◽

pp. 194-199

Author(s):

H. A. Daynes ◽

J. R. Scott

Keyword(s):

The Other ◽

Hardness Testing ◽

Hardness Tester ◽

Vulcanized Rubber

Abstract Tests have been made on numerous rubbers with the R.A.B.R.M. hardness gauge, the Strachan piezomicrometer, and the Pusey and Jones plastometer (using in each case ¼-in. and ⅛-in. diameter balls) and with the Shore durometer and Schopper hardness tester, to determine the relationships between the readings given by these instruments. The results are tabulated and represented graphically as correlation curves. A conversion chart is given by which the reading obtained with any one instrument or size of ball can readily be converted into the corresponding reading for any of the other instruments or sizes of ball.

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A Study of Laser Aided Activating TIG Welding

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.664.117 ◽

2014 ◽

Vol 664 ◽

pp. 117-121

Author(s):

Yan Yin ◽

Jin Guo Ta ◽

Rui Hua Zhang ◽

Zhan Chong Wang

Keyword(s):

Mechanical Properties ◽

Weld Bead ◽

Tig Welding ◽

Power Laser ◽

Welding Joint ◽

Welding Method ◽

Weld Appearance ◽

Microstructures And Mechanical Properties

Laser aided activating TIG welding was called LA-TIG. At first, the surface of weld was melted by the mini power laser protected by oxygen, and then the conventional TIG was used to cover the weld, which achieved the target of the weld with deeper penetration and narrower width. In this article, the weld bead morphology, arc images, microstructures and mechanical properties of laser aided activating TIG welding joint were analyzed. The results shows that the penetration increased significantly, excellent weld appearance and finger shape penetration were gained by laser aided activating TIG welding. It was found that the arc images of the LA-TIG was only the enlarged form compared with which observed in the conventional TIG and the arc constriction was also observed. LA-TIG weld exhibits better mechanical properties than the conventional TIG welding. Thus laser aided activating TIG welding was developed as a novel active welding method.

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