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http://dx.doi.org/10.3795/KSME-A.2012.36.9.971

Mechanical Properties of The CO2 Free Vacuum Carburized in SCM415H  

Byun, Jae-Hyuk (Dept. of Intelligent Mechanical Engineering, Kumoh Nat'l Institute of Technology)
Ro, Seung-Hoon (Dept. of Intelligent Mechanical Engineering, Kumoh Nat'l Institute of Technology)
Lee, Jong-Hyung (Dept. of Intelligent Mechanical Engineering, Kumoh Nat'l Institute of Technology)
Lee, Chang-Hun (Production Technology Research Institute, Kumoh Nat'l Institute of Technology)
Yang, Seong-Hyeon (Production Technology Research Institute, Kumoh Nat'l Institute of Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.9, 2012 , pp. 971-978 More about this Journal
Abstract
Vacuum carburizing is supposed to be the superior process to the gas carburizing. However, the vacuum carburizing has the stage in which hydrocarbon gas is supplied into the furnace to be pyrolysis, and consequently the stable heat treatment is hard to achieve due to the soot from the hydrocarbon pyrolysis. Recently, many studies have been made which utilize acetylene gas to overcome this defects. In this paper, the carburizing and the diffusion periods have been selected based on the Harris experimental formula, and the mechanical properties of the vacuum carburized specimen have been compared with those of the gas carburized SCM415H specimen to identify the feasibility of the $CO_2$ free vacuum carburizing process. The result showed that the vacuum carburized materials used have no oxidization of the grain boundaries, and show the 29.8% higher effective hardness depth and the acceptable tensile strength.
Keywords
Vacuum Carburizing; Gas Carburizing; Acetylene; $CO_2$ Free; Mechanical Properties;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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