An investigation on the influence of double heat treatment process on round stainless steel bar

Abu Daud , Halip (2013) An investigation on the influence of double heat treatment process on round stainless steel bar. Project Report. UTeM. (Submitted)

Text AN INVESTIGATION ON THE INFLUENCE OF DOUBLE HEAT TREATMENT PROCESS ON ROUND STAINLESS STEEL BAR 24pages.pdf Download (5MB)

Abstract

This research covered mainly the effect of double heat treatment on stainless steel bar. Three types of heat treatment are normalizing, quenching, and tempering. The specimen that used in this study consisted of round shape stainless steel bar with 25mm x 250 mm (length=250mm, diameter=25mm). During heat treatment process, specimen is heated up to 960°C for one hour before taken out from the furnace. Two of the specimens are quench in water at room temperature. For other specimen, it will cool at room temperature due the normalizing process. One of the specimens from quenching process will be continued with tempering process, tempering process consist of two level heating process and temperature will be considered. After the first stage of the heat treatment process is complete, three types of test will be conducted which are hardness test, microstructure and tensile test the specimen. After that, another specimen will undergo the same heat treatment process for second time. The specimen also will be tested with three types of testing and the result of single and double heat treatment will be compared. The expected result for this research is that the hardness and strength of the specimen will increase according to the three type of heat treatment that has been conduct in the research.

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