ANALISIS PERBANDINGAN KEKERASAN PERMUKAAN POROS AXLE SHAFT JENIS MATERIAL S-43 YANG DILAKUKAN DENGAN PROSES INDUKSI HARDENING PADA MESIN 12-9 B “KORA NETUREN”

Sumiyanto Sumiyanto

Sari


Hardening process is the process of hardening in a material heated above the critical temperature and then cooled quickly (quenched) to reach room temperature in order to improve hardness and strength of a material. Hardening process carried out on all the tools and some equipment or machine parts that have a major benefit is to obtain a higher hardness.

This research was conducted on 447 SNCM alloy steel which is a medium carbon steel grade that is equal to 0:30 to 0:38%. This type of steel can be hardened by heat treatment process that is by heating the steel at a temperature of 500oC, for 1 hour as the preheating temperature (preheated). Then proceed to the process of hardening, namely austenising temperature with 900oC with holding time 2 hours and cooled with oil and then water in tempering with holding time 1 hour at 300oC, 400oC and 500oC.

From research result obtained using the Vickers hardness values that increase occurred in materials that undergo a process of hardening at 900oC cooling using water media, whereas the lowest hardness value occurs in the original material.


Kata Kunci


Hardening, Holding Time, Heat Treatment Process.

Teks Lengkap:

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Referensi


Metallic Materials Vickers Hardness Test part 1, iso second ed., 1997-11-15, Swizerland ISO 6507-1:1997

Bradbury, “Dasar Metalurgi Untuk Rekasasawan” PT. Gramedia Pustaka Utama. 1997

Djaprie, Sriati. “Teknologi Mekanik” jilid 1 Erlangga, Jakarta. 1992

Avner, s.h., “Introduction To Physical Metallurgy”, mc. Graw-hill, new york, 1964.

www.wikipedia.com/2013/02/heat treatment.html

Http:www.egiskren.blogspot.com /2013/02/klasifikasi


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