The Effect of Speed and Distance of Fire on the Achievement of Austenitization Temperature in Low Carbon Steel with Thickness Variations on the Flame Hardening Process
1st Norman Iskandar, 2nd Sulardjaka, 3rd Munadi, 4th Reza Yusna Hanasta, 5th Deni Fajar Fitriyana, 6th M. Dzulfikar
1st-4th : Department of Mechanical Engineering, University of Diponegoro
5th :Department of Mechanical Engineering, Semarang State University
6th :Department of Mechanical Engineering
University of Wahid Hasyim
Abstract
Austenite temperature must be achieved in the surface hardening process. In the process of surface hardening by the method of flame hardening, failure is often encountered, for example, such as increasing the value of hardness that is not optimal, and the value of hardness that is less uniform The type of fire used, the distance of fire to the specimen, the speed of fire and the level of thickness of the material are factors that are very influential in the process of flame hardening. The purpose of this study is to measure and observe the profile or rate of the trend of increase and decrease in temperature in the flame hardening process in low carbon steel material.The experiment method that is carried out is by giving the variation of the rate. The measurement process uses several thermocouples mounted on the specimen and connected to a computer for the process of data recording and process monitoring. The conclusion of this study is the greater the value of the thickness of low carbon steel material that is processed by flame hardening, so to reach the temperature of austenitization by the method of flame hardening the speed of fire must be slowed. An improper combination between the distance of fire and specimens and the speed of fire can cause austenite temperature not to be reached. The heat reduction rate takes place more slowly than the rate of increase in heat. the speed of fire and distance of fire to low carbon steel which has varying levels of thickness.
Keywords: Austenitization, flame hardening, low carbon steel, temperature, thickness
Topic: Functional Materials