PENINGKATAN MUTU PERMUKAAN BAJA ST 60

Abstract

This follow-up study aims to obtain the right percentage of cooling media mixture (water and salt) to improvethe quality of carbon steel surfaces of St 40, and St 60, from previous studies conducted only one type of specimenmaterial, namely ST 40 with various cooling media such as: water, salt, oil, and surrounding air conditioning. For thisadvanced research to be achieved is resistant to wear resistance. The research method analyzes the mixture of coolingwater and salt to heat treatment of st 60 and st 40. The target is to achieve the quality of carbon steel st 60 afterexperiencing heat treatment with a maximum temperature of 800 Co heating directly from acetelin and oxygen gas, thisheat treatment method is called flame hardening method. In the cooling process, the mixture of salt and water will bevaried. As for the results achieved a mixture of salt and water with a ratio of 1: 3 one liter salt and liter water can improvethe quality of the steel surface of St 60.