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All Journal Jurnal Rekayasa Mesin AMMA : Jurnal Pengabdian Masyarakat
Akhmad Nurdin
Universitas Tidar
Humanities Chemistry Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing

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Penerapan Pembuatan Sampel Uji Tarik FCD Type Y-Blok Spesimen pada PT. Aneka Adhilogam Karya Klaten Iqbal Zulfikar Alief Utama; Lutiyatmi; Akhmad Nurdin
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 11 : Desember (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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Abstract

The metal casting process can be briefly interpreted as a sequence of processes for making cast objects that are mutually continuous, starting from the design of the cast object to the final processing process. The Ceper metal casting industry is also a metal casting industry that carries out the casting process, one type of cast product is a product from cast iron with the type of nodular cast iron (FCD) and consumers who order this FCD product come from various groups, both private institutions and government institutions, even internationally. Consumers want the ordered product to be good and high quality, to meet these consumer demands, the metal casting industry that produces products must have their products tested and maintained for quality both in terms of manufacturing and testing. FCD products made in the Ceper metal casting industry, most of the product results and their testing have not been able to meet the standard FCD criteria. The results of supporting tests to determine the type of FCD product include the FCD product manufacturing process, chemical composition tests, hardness, metallography, thermocouples and tensile strength of the products made. The purpose of this study is to obtain quality nodular cast iron (FCD) casting products according to the needs of the Ceper metal casting industry and can reduce the reject ratio of cast products. This community service program was conducted to implement the production of nodular cast iron samples in partner industries, and to conduct the testing process along with the creation of standard samples. Molds for tensile test samples were created and further research was conducted on the method for producing Y-Block Tensile Test Specimens.
Analysis of the Effect of Cupola Furnace Slag Addition as Reinforcement on Aluminum Metal Matrix Composites Fabricated by Stir Casting Method Lutiyatmi Lutiyatmi; Ridwan Afandi; Akhmad Nurdin; Sri Hastuti; Febri Budi Darsono; Fajar Paundra
Jurnal Rekayasa Mesin Vol. 21 No. 2 (2026): Volume 21, Nomor 2, August 2026
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v21i2.7216

Abstract

This study aims to investigate the effect of adding foundry slag waste from a cupola furnace as a reinforcing particle in Aluminum Metal Matrix Composites (AMMCs) on the casting characteristics of recycled aluminum scrap–based alloys. The cupola slag furnace was added at weight fractions of 2%, 4%, and 6%. The composites were fabricated using the stir casting method, with aluminum scrap frame serving as the matrix and foundry slag as the reinforcement. The aluminum was melted in a gas furnace, and mechanical stirring was initiated 5 minutes before adding the slag into the semi-solid molten metal. After slag addition, stirring was continued for another 5 minutes, followed by the addition of magnesium (Mg) as a wetting agent. The molten composite was then poured into molds to produce test specimens. The experimental evaluation included density measurement, impact toughness testing (J/mm²), and fracture surface observation of the impact-tested specimens. The results revealed that increasing the slag content significantly affected the material’s toughness. At lower concentrations (2–4%), the slag particles were uniformly dispersed within the aluminum matrix and acted as effective micro-reinforcements that hindered crack propagation. However, at higher concentrations (6%), particle agglomeration occurred due to increased surface energy and weakened interfacial bonding, leading to a noticeable decrease in impact toughness.
Co-Authors Fajar Paundra Febri Budi Darsono Iqbal Zulfikar Alief Utama Lutiyatmi Lutiyatmi Lutiyatmi Ridwan Afandi Sri Hastuti