HARDENING BAJA AISI 1045 MENGGUNAKAN GEL ALOE VERA SEBAGAI MEDIA PENDINGIN
Abstract: Quenching is a
cooling method of heat treatment for metal hardening. Quenching refers to the
process of rapidly cooling metal parts from the austenitizing or solution
treating temperature,typically from within the range of 815 to 970 °C for
steel. The selection of a quenchant mediumdepends on the hardenability of the
particular alloy, the section thickness and shape involved,and the cooling
rates to achieve the desired microstructure. The liquid quenchants of oil is commonly
used in industrial manufacture. But, oil is not environmental. The aim of this
research research is to find new quenchant for change oil as quenchant to more
environmental. Gel aloevera is purposed for it. The material used in this study
is AISI 1045 steel. Cooling curve andcooling rate is measured by finite element
model, ANSYS APDL 14.5. True experimental is done to view microstructure and
measure hardness of steel. Simulation result shown that gel aloe vera has
almost similar cooling curve and cooling rate with oil. Microstructure result
of steel for gel aloe vera as quenchant is martensite in surface, bainite in
center, and pearlite in between surfaceand center. Hardness number of steel for
gel aloe vera as quenchant is 189.63 HVN in surface, 182.566 HVN in center, and
162.866 HVN in between surface and center. By simulation and trueexperimental
analisys concluded that gel aloe vera has opportunities to change oil as
quenchant for hardening process.
Penulis: Eko Budiyanto, Moch.
Agus Choiron, Djarot B. Darmadi
Kode Jurnal: jptmesindd160659
