APLIKASI SERBUK ARANG TONGKOL JAGUNG DAN SERBUK CANGKANG KERANG MUTIARA SEBAGAI MEDIA CARBURIZER PROSES PACK CARBURIZING BAJA KARBON RENDAH
Abstract: Carburizing process
on low carbon stell can be done by using carburizer of corncob charcoal, pearl
oyster shell powder. Cylindrical low carbon steel of AISI 1018 was used in the
present study. The materials put inside the pack carburization with carburizer
and pearl oyster shell powder. Thepearl oyster shell powder varies of 5, 10,
20, and 25 weight percentage. The temperature of910oC, 930oC, and 950oC was
used to heat the materials with holding time of 90 and 150 minutes. Then,
hardness Vickers test and microstructure test using scanning electron
microscope (SEM) was used to analyze the hardness number of each materials. The
results shown that the hardnessnumber increased up to 262,47 kg/mm2 (82 %) from
144,08 kg/mm2 by adding 20 % weight of pearl oyster shell powder with heating
and holding time of 950oC and 150 minutes, respectively. From microstructure
and composition test reveal that surface hardening occurred on the low carbon
steel surface due to carbon diffusion during pack carburizing process.
Penulis: Sujita
Kode Jurnal: jptmesindd160667
