公开(公告)号：US10697054B2

公开(公告)日：2020-06-30

申请号：US15772199

申请日：2016-10-31

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Jun Ho Kim ,  Kyu Sik Kim ,  Uoo Chang Jung ,  In Wook Park

IPC: C23C8/22 ,  C23C8/02 ,  C23C8/80 ,  C23C8/20 ,  C23G1/02 ,  C23G1/08

Abstract: A low temperature carburizing method according to the present invention comprises: step (a) for pre-processing a metal to be processed; step (b) for inputting the metal to be processed to a reaction chamber and heating the same to a set temperature; step (c) for forming a vacuum atmosphere in the reaction chamber and introducing a reaction gas thereinto at a predetermined pressure to accelerate carburization; step (d) for supplying the reaction gas to the reaction chamber at a pressure equal to or lower than the pressure of the reaction gas of step (c) to spread carburization; and step (e) for repeating step (c) and step (d) at predetermined time intervals.