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All Journal Radial : Jurnal Ilmiah Sains Dan Rekayasa Jurnal Teknologi Industri
Permana Andi Paristiawan
Universitas Bung Karno
Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Perbandingan Waktu Pakai Insert Die Berbahan Baja Perkakas SKD 11, ASSAB 88, dan SKH 51 untuk Produk Mur (NUT) Berbahan S45C Permana Andi Paristiawan
Radial : Jurnal Ilmiah Sains dan Rekayasa Vol. 1 No. 2 (2023): September
Publisher : Fakultas Teknik - Universitas Bung Karno

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62024/radial.v1i2.10

Abstract

The wear time of die inserts for nut products was studied in this research. The die insert material used is SKD 11, ASSAB 88 and SKH 51 tool steel, while the nut product material to be produced is S45C series carbon steel. These three die insert materials have been tested in the industry. Making nuts includes a dimensional test by measuring the dimensional tolerance of the nut and a service time test by looking at the number of products produced. This test is continued with a microhardness test on the inner side of the die insert. Use time for SKD 11 tool steel is 40,105 products with dimensional tolerance changed to 0.055 mm, ASSAB 88 tool steel is 110,703 products with dimensional tolerance changed to 0.053 mm, SKH 51 tool steel is 100,404 products with dimensional tolerance changed to 0.054 mm, micro hardness test tool steel shows that the deepest part of the die insert side is on average lower than the middle of the die insert. Insert dies made from SKD 11 have the shortest life, Insert dies made from SKH 51 have the longest life, and Insert dies made from ASSAB 88 have the highest life and are slightly higher than SKH 51. The use time for SKD 11 is two to three times, while the use time SKH 51 and ASSAB 88 are estimated to have been used more than three times.
Analisis Kekuatan Tarik dan Metalografi Sambungan Spot Welding pada Material AISI 321 Handi Handi; Permana Andi Paristiawan; Necko Junia
JURNAL TEKNOLOGI INDUSTRI Vol. 15 No. 2 (2026): Jurnal Teknologi Industri (In-Press)
Publisher : Universitas Dirgantara Marsekal Suryadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35968/jti.v15i2.2022

Abstract

This study aims to analyze the tensile strength and metallographic characteristics of spot welded joints using AISI 321 material. The joining process was carried out using the resistance spot welding (RSW) method with a lap joint configuration under constant welding parameters. The welded specimens were subjected to tensile testing to determine the maximum load and the type of failure. In addition, metallographic examination was conducted to observe the microstructural changes in the welded region. The results show that the maximum tensile strength obtained is 1.483 N/mm2, with the failure mode identified as interfacial failure. Metallographic analysis reveals three main zones: base metal, heat affected zone (HAZ), and fusion zone. The microstructure in the nugget area tends to be finer due to rapid cooling, while grain growth is observed in the HAZ as a result of the thermal cycle during welding. The correlation between tensile test results and metallographic observations indicates that the joint quality is strongly influenced by the nugget size and microstructural characteristics, particularly in the HAZ region. Therefore, welding parameters play a crucial role in determining the mechanical performance of spot welded joints.
Co-Authors Handi Handi Necko Junia