Comparative Study of Mechanical Properties for Steel S50C by Induction Heating Application

In this paper, a study of the properties of S50C steel used for mold structure is presented, and plastic injection molds are prepared to be hardened by giving it a low surface hardness. There is a risk of warping and cracking when heat treatment causes the surface to be hardened for milling, turning, and hardening processes. By receiving heat from two sources: the heat from the heater and induction heating. When heating from a heater that can reach a temperature of 600–800 ℃ with induction heating, using an inverter circuit to adjust the power and control the temperature for heat, studying the internal structure of steel when heated, and hardening test results of the S50C steel structure by using a laser confocal microscope to see the comparison results of unheated steel, heated steel with a heater, and steel that has been heated by induction heating.