| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for controlling the carbon carburization amount for the surface structure of a steel member. <P>SOLUTION: The carburizing treatment method for steel workpieces comprising immersing a steel workpiece 10 in a carburizing solution S, inductively heating up the steel workpiece by high-frequency induction 4, and carburization treating for the steel workpiece to a crystal structural surface, includes quickly heating up the steel workpiece surface for carburization to the temperature above the boiling point of the carburizing solution using the high-frequency induction heating method 4 so that the carburization gas gasified under the condition of the carburization solution thermally decomposed and including active carbon becomes a thin carburization gas layer to cover the surface of the steel workpiece, destructing the carburization gas layer using inactive gas bubbling 20 so that the active carbon concentration in the carburization gas layer is changed, and controlling the carbon intrusion amount of the carburization layer formed on the surface of the steel workpiece. <P>COPYRIGHT: (C)2013,JPO&INPIT |
