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Journal : Journal of Engineering Science and Technology

Pengaruh Variasi Bentuk Kampuh Las TIG (Tungsten Inert Gas) Terhadap Uji Tarik dan Struktur Mikro Pada Material Plat Stainless Steel 201 Pratama, Mokhammad Yoga; Mufarida, Nely Ana; Kosjoko, Kosjoko
Journal of Engineering Science and Technology Vol. 1 No. 3 (2023): September
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jesty.v1i3.19

Abstract

Welding technology has an integral role in the manufacturing technology domain. To create high-quality structures requires technology that allows joining metals. It is in this phase that welding technology comes into play. TIG (Tungsten Inert Gas) welding is a form of tungsten gas arc welding, where the electrode acts as an arc supplier that does not melt during the welding process. The Gas Tungsten Acr Welding technique is generally used more on light metals such as magnesium, aluminum, and stainless steel, and other types of metal. This type 201 carbon steel has several mechanical characteristics, including a tensile strength of 580 Mpa, an elastic limit (yield strength) of 198 Mpa, an elongation rate of 50%, and a hardness of 87 HRBI. The aim of this research is to determine the tensile strength and microstructure of TIG (Tungsten Inert Gas) welding results with 45 degrees of V, U and J seams. This research was carried out with several flat 2D test models of 45 degrees of V, U and J seams with current. 110 - 120. This research was conducted at the Banyuwangi Job Training Center, in the Materials Laboratory for Mechanical Engineering at Sebelas Maret University, Surakarta and at the Mechanical Engineering Laboratory at Jember State University. In this research, the results of changes in tensile strength were quite significant. The lowest tensile strength value is found in the J weld seam with an average value of 394.4 MPA. Meanwhile, the highest tensile strength value is found in the V weld seam with an average value of 531.1 MPA. The results of the microstructure for J seam have the largest phase grains and V seam forms the smallest phase grains compared to the others. Kampuh V has quite a large number of grains because they are relatively small and dense.
Pengaruh Variasi Arus Las SMAW Terhadap Uji Tarik dan Uji Kekerasan Serta Struktur Mikro Pada Bahan ST 37 Surahman, Andika; Mufarida, Nely Ana; Kosjoko, Kosjoko
Journal of Engineering Science and Technology Vol. 1 No. 3 (2023): September
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jesty.v1i3.21

Abstract

This research aims to determine the effect of variations in welding currents of 90A, 100A, and 110A on SMAW bases on the material in the tensile, hardness, and microstructure tests. This research uses ST37 low carbon steel and uses E6013 electrodes with a diameter of 3.2 mm, followed by making specimens for testing. After that, the welding process is carried out and then testing continues. In the test, the following results were obtained: The strength value of the welded material with tensile testing was obtained with the highest results at a current variation of 110A with Yp 27.33 Mpa, Max 36.47 Mpa, Break 31.08 Mpa. Because the highest pearlite microstructure value is obtained in the 110A variation. And the lowest value occurred in the welded material of variation 90A with Yp 25.48 Mpa, Max 26.86 Mpa, Break 12.33 Mpa. Because the lowest pearlite microstructure value is obtained in the 90A variation. while the comparison of the level of hardness in ST 37 carbon steel with varying welding currents ranging from 90A, 100A, and 110A has an average hardness value of 168 VHN for welding with a current of 90A for welding with a current of 100A the average hardness value is 177 VHN and finally in welding current 110A the average hardness value is 191 VHN. The hardness level of the ST 37 carbon steel specimen was the highest at a welding current of 110A, with a tensile strength test result of 36.47 MPa. And from the results of observing photos of the microstructure using the point count method, the highest percentage of pearlite was in the welding material variation 110A so the tensile strength value was higher.
Co-Authors Abadi Sanosra Abadi, Taufan Aditya Dimas Pratama Aditya Surya Manggala Agus Hari Cahyono Ahmad Abi Sodik Aji Sangjoko Alfian Anggraista Amelia novinda sari Aminulloh, Romi Amri Gunasti Andik Irawan Andre, Irham Andrean Angga Dwinanda Anggraista, Alfian Ardhi Fathoni Syam PN Ardhi, Nusantara Fathonisyam Putra Ariyanto Ariyanto Ariyanto, Ariyanto Asroful Abidin Azimansyah, Rafidan Bahri, Hairul Bahri, Mokh Hairul Bahri, Mokh. Hairul Bakti, Budi Satria Baskara, Ayun Beni Pamuji Lestar Cahyono, Agus Hari Dekiyanto Dwi Haryono Desta, Senki Dwi Bayu Kristanto Dwinanda, Angga Eko Budi Satoto Erna Ipak Rahmawati Febri Ari Sandi Finali, Asmar Firmansyah Firmansyah Firmansyah, Firmansyah Fitriana Fitriana Fitriana, Fitriana Galatea, Chusnul Khotimah Gery Retanubun Gilang, Aditya Hamduwibawa, Rofi Budi Harum Tri Wahyudi Hawaij, Dedi Maulana Hidayat, Rahmat Hifni, Mada Naufal Ikhfan Tri Wahyulianto Putra Ilanka Cahya Dewi Indra Eka Prasetya Irawati Irawati Iskandar Umarie Jawantino Samawa Khoiri, Yasirul Kosjoko Kosjoko Kosjoko kosjoko kosjoko Kosjoko Kosjoko Kosjoko Kosjoko Kosjoko, Kosjoko Lakum, Yuslih Lestar, Beni Pamuji M. Wildanul Kahfi Mihrozi, Moch Iqbal Moch Iqbal Mihrozi Moch Taufik Moch. Arif Wibowo Moh Hasan Noval Moh. Ainul Yaqin Muarifin, Muarifin Muh Andrea Wahyu Muhammad Reza Ardian Putra Muhammad Zaenuri Muhammad Zainur Ridlo Muhtar Muhtar Muhtar Muhtar Nanang Saiful Rizal Noval, Moh Hasan Nurhalim Nurhalim, Nurhalim Nurhalim, Nurhalim Nurlina, Ika Tyas Octa, Hakim Orisanto Darma Setiawan Prakosa, Gilang Satria Pranoto, Rachmad Adi Pratama, Mokhammad Yoga Prayogi Donny Dharmawan Probowulan, Diyah Putra, Dhian Wahana Putra, Ikhfan Tri Wahyulianto Putra, Muhammad Reza Ardian Rachmad Adi Pranoto Rahmat Hidayat Retanubun, Gery Romadhon, Muhammad Firly Sandi, Febri Ari Setiyo Ferdi Yanuar Shofiyah, Rohimatush Sholehuddin, Ilham Sodik, Ahmad Abi Sofia Ariyani Sofyan Rofi Soleh, Abdullah Robeid Suharso, Wiwik Sultan Maulana Abdul Wahid Surahman, Andika Sutikno Sutikno Syah, Moch. Thoriqur Rahman Taufan Abadi Taufik, Moch Toha, Kamil Totok Dwi Kuryanto Ulumudin, M Ikhya Umarie, Iskandar Wahyu, Muh Andrea Wahyudi, Harum Tri Wahyudi, Irfan Sholeh Wibowo, Bintang Yudhistira Adi Wibowo, Moch. Arif Yanuar, Setiyo Ferdi Yaqin, Moh. Ainul Yasirul Khoiri Yuslih Lakum