• Journal of the Korean Society for Heat Treatment
• /
• v.13 no.3
• /
• pp.192-195
• /
• 2000

• Journal of the Korean Society for Heat Treatment
• /
• v.2 no.1
• /
• pp.52-58
• /
• 1989

• Journal of the Korean Society for Heat Treatment
• /
• v.2 no.1
• /
• pp.66-69
• /
• 1989

• Journal of the Korean Society for Heat Treatment
• /
• v.2 no.1
• /
• pp.8-12
• /
• 1989

• Journal of the Korean Society for Heat Treatment
• /
• v.3 no.2
• /
• pp.68-73
• /
• 1990

• Journal of Welding and Joining
• /
• v.32 no.4
• /
• pp.34-38
• /
• 2014

Carburizing treatments are the important way to developing fatigue strength and wear resistance. It is well known that the case depth is one of the most significant parameters determining fatigue strength. In this study, 3-point bending fatigue test was conducted to evaluate fatigue strength for the carburized depth with 18CrNiMo7-6 steel. As a result, fatigue strength increased with effective case depth decreased. It is shown that hardness in case hardened layer played principal role in the fatigue strength.

• Journal of Power System Engineering
• /
• v.15 no.6
• /
• pp.59-66
• /
• 2011

This study was carried out the experimental and the analysis for process of carburizing and quenching, evaluated the reliability of mock-up. Carburizing of comer of rock gear was higher than body regardless of condition of eight processes, and the end of gear tooth was more highly distributed than root. Hardness of surface shows the maximum value and was decreased linear to depth direction. The result of analysis wasn't nearly the heat deformation. In mock-up, tooth flank increased 0.096%, thickness of tooth decreased 0.11% and body increased 0.11%. It had no trouble with assembly and operation like this. The mock-up of recliner for automobile was secured stability by four types of test.

• 제어로봇시스템학회:학술대회논문집
• /
• 1995.10a
• /
• pp.142-145
• /
• 1995

It is important from prevention of the malfunction and an important accident by the failuer, to detect a failuer in revolution devices. The acoustic emission(AE) method is expected as means that defects an abnormal phenomenon of revolution devices earlily and utilized. Although a research example by the AE method is reported regarding a gears, little reserch has been conducted using the AE method for running gears in a bending fatigue process of spur gear teeth. Therefore, in this report, with two micro AE sensors attached to the side of the gear, AE was measured in a bending fatigue process of a carburizing gear by using the power circurating-type machine and AE source location in gear teeth were required. By various analysis in these data, the AE characteristics in the fatigue damaging process of the gear tooth were determined.

• Journal of Auto-vehicle Safety Association
• /
• v.7 no.2
• /
• pp.19-24
• /
• 2015

Ferritic Nitro Carburizing (FNC) cast iron brake discs is known to improve corrosion resistance and brake creep groan noise as well as prevent corrosion-induced pulsation. But, it is necessary to treat honing machining on braking surface to avoid grinding noise during braking.

• 보존과학연구
• /
• s.14
• /
• pp.1-34
• /
• 1993

1. Metallurgical Properties of Iron artifacts excavated from Yangju-Mountain fortress were studied for the scientific conservation and metallurgical history of ancient Iron artifacts.2. Iron artifacts form Yangju-Mountain fortress were found to be the products of having well-established Carburizing and remelting technique in that period.3. These artifacts seem to be manufactured from very pure ores, because very pure ferrite structure and low impurity.4. Especially evidence of very suitable carburizing technic well-established and usealloying method of Fe-C system on purpose were found.5. Cast iron artifacts were found to be eutectic composition (4.31%) having lowestmelting point in Fe-C system.