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All Journal Jurnal Abdimas Kartika Wijayakusuma Jurnal Sosial dan Sains
Herlingga, Muhammad
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Humanities Astronomy Education Environmental Science Law, Crime, Criminology & Criminal Justice Library & Information Science Physics Social Sciences Other

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Pengaruh Heat Treatment Setelah Water Cooling pada Baja ST 60 Terhadap Sifat Mekanik Herlingga, Muhammad
Jurnal sosial dan sains Vol. 5 No. 9 (2025): Jurnal Sosial dan Sains
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jurnalsosains.v5i9.32492

Abstract

This study aims to determine the effect of heat treatment and quenching processes on the hardness value of ST 60 steel. ST 60 steel is a medium carbon steel with a carbon content of 0.564% and manganese content of 0.697% which has hard and wear-resistant properties. The research method uses an experimental approach with heat treatment process at 950°C temperature with holding time variations of 20 and 50 minutes, followed by quenching with water media. Hardness testing was performed using the Vickers method with an indentation load of 5 kgf at 5 different points for each specimen. The results showed that the hardness value of ST 60 steel increased significantly after heat treatment. Maximum hardness was achieved at 20 minutes holding time with a value of 734.521 HVN, increasing 137% compared to the initial material which had a hardness of 309.308 HVN. At 50 minutes holding time, the hardness obtained was 615.924 HVN. The increase in hardness is caused by the formation of martensite structure due to rapid cooling which causes carbon atoms to be trapped in supersaturated solid solution. This research shows that holding time variation affects the hardness value, where the optimal holding time is 20 minutes to achieve maximum hardness in ST 60 steel. , ,, ,
Optimalisasi Manajemen Pendidikan dalam Mendukung Pelayanan Inklusif untuk Anak Berkebutuhan Khusus pada Lembaga Kazama Bekasi Komara, Endang; Zahra, Zahra; Herayati, Herayati; Yuswara, Iyus; Herlingga, Muhammad; Rosmaladewi, Okke; Soro, Suharyanto H.
Jurnal Abdimas Kartika Wijayakusuma Vol 6 No 4 (2025): Jurnal Abdimas Kartika Wijayakusuma
Publisher : LPPM Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jakw.v6i4.1137

Abstract

Kegiatan pengabdian kepada masyarakat (PkM) ini bertujuan untuk menerapkan prinsip-prinsip manajemen pendidikan agar bisa meningkatkan pelayanan yang inklusif bagi Anak Berkebutuhan Khusus (ABK) di Lembaga Kazama Bekasi. Lembaga ini berperan penting dalam memberikan layanan pendidikan yang ramah dan sesuai dengan kebutuhan individu peserta didik. Kegiatan ini menggunakan pendekatan manajemen pendidikan yang terencana, mencakup tahap perencanaan, pelaksanaan, pengorganisasian, serta evaluasi pelatihan inklusif. Kegiatan ini juga memberikan pelatihan dan bimbingan kepada para pendidik dan pengelola lembaga agar mereka lebih terampil dalam mengelola proses belajar yang mengakomodasi berbagai kebutuhan peserta didik. Hasil kegiatan menunjukkan peningkatan pemahaman para pendidik tentang konsep inklusivitas. Selain itu, terbentuk sistem layanan yang lebih efektif dan responsif terhadap kebutuhan ABK. Dengan demikian, penerapan manajemen pendidikan memberikan kontribusi positif dalam memperkuat kualitas pelayanan inklusif di Lembaga Kazama Bekasi.
Co-Authors Endang Komara Herayati, Herayati Okke Rosmala Dewi Suharyanto H. Soro Yuswara, Iyus Zahra Zahra