Napitupulu, Richard, Maruba Manurung, Charles Manurung, and Siwan Peranginangin. “Pengerasan Permukaan Baja Karbon Rendah Melalui Proses Pack Carburizing Dengan Menggunakan Arang Cangkang Kemiri”. SPROCKET JOURNAL OF MECHANICAL ENGINEERING 4, no. 2 (February 12, 2023): 126-131. Accessed May 5, 2024. https://jurnal.uhn.ac.id/index.php/mechanical/article/view/919.