Polymer Quenching of En9 Carbon Steel
T.R. Vijayaram, S. Nithish, DOI : 10.37591/JoEAM
[This article belongs to Journal of Experimental & Applied Mechanics(joeam)]
Keywords
EN9, Heat treatment, polymer quenchant, poly vinyl alcohol, carbon steel
Abstract
In this research, EN9 type of steels is selected to process the heat treatment by quenching to increase the hardenability of a material. EN9 steel is cut into small work samples with diameter 25mm and length 15mm to analyze. Then they are polished the cut surface in a fine manner. Microstructure and hardness are to be found for EN9 work pieces before heat treatment at different locations like at origin, 2.5 mm, 5 mm, 7.5 mm and 10 mm from origin. The cut work pieces are then placed in muffle furnace and heated at 810o – 840o, predetermined temperature range with soaking time 40 minutes. Then once they are heated, immediately they are quenched in a polymer quenchant (PVA) at different concentrations in a vessel by using tongs. Then, the microstructure and hardness is compared for EN9 material before heat treatment and after heat treatment with polymer quenching media to obtain the result. Graphs like location Vs hardness and polymer quenching media Vs average hardness were drawn.
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