| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum carburization method capable of carburizing an object to be processed so as to have a high quality, while preventing spot-like excessive carburization.SOLUTION: In a vacuum carburization method for carburizing an object to be processed arranged in a carburization chamber by jetting out carburization gas into the carburization chamber having a decompressed atmosphere, a gas jetting amount of the carburization gas to be jetted out into the carburization chamber is calculated based on a volume of the object to be processed in the state of a style of packing in the carburization chamber, a volume of the carburization chamber, the total surface area of the object to be processed, and a constant set based on the kind of the carburization gas, and the carburization gas having the calculated gas jetting amount is jetted out into the carburization chamber.SELECTED DRAWING: Figure 3 |
