PARTIALLY CARBURIZED HEAT TREATED STAINLESS FERRULE, AND MANUFACTURING METHOD THEREFOR
According to one aspect of the present invention, provided is a partially carburized heat treated stainless ferrule, wherein a first region has a first hardness, a second region has a second hardness, the first region comprises: a nitrogen layer in which the concentration of nitrogen is greater than...
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Sprache: | eng ; fre ; kor |
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Zusammenfassung: | According to one aspect of the present invention, provided is a partially carburized heat treated stainless ferrule, wherein a first region has a first hardness, a second region has a second hardness, the first region comprises: a nitrogen layer in which the concentration of nitrogen is greater than that of carbon; and a carbon layer provided inside the nitrogen layer in which the concentration of carbon is greater than that of nitrogen, and the first hardness is greater than the second hardness. Through such partial heat treatment, the front portion of a region excluding a part to be heat treated is cured by heat treatment, thereby preventing a phenomenon in which rotational torque increases.
Selon un aspect, la présente invention concerne une ferrule inoxydable traitée thermiquement en partie cémentée, une première région ayant une première dureté, une seconde région ayant une seconde dureté, la première région comprenant : une couche contenant de l'azote dans laquelle la concentration en azote est supérieure à celle en carbone ; et une couche contenant du carbone prévue à l'intérieur de la couche contenant de l'azote dans laquelle la concentration en carbone est supérieure à celle en azote, et la première dureté est supérieure à la seconde dureté. Grâce à un tel traitement thermique partiel, la portion avant d'une région, exceptée une partie à traiter thermiquement, est durcie par traitement thermique, empêchant ainsi un phénomène dans lequel le couple de rotation augmente.
본 발명의 일 측면에 따르면, 제1영역은 제1경도를 가지고 제2영역은 제2경도를 가지며, 상기 제1영역은 질소의 농도가 탄소의 농도보다 큰 층인 질소층및 상기 질소층 안쪽에 구비되며, 탄소의 농도가 질소의 농도보다 큰 층인 탄소층을 포함하여 상기 제1경도가 상기 제2경도 보다 큰 것을 특징으로 하는 부분 침탄질화 열처리된 스테인리스 페럴을 제공한다. 이러한 처리를 통해, 부분 열처리에 있어서, 열처리의 대상이 되는 부분을 제외한 영역이 열처리의 영향으로 전면부 경화되어 회전 토크(Torque)가 상승되는 현상을 막는 효과가 있다. |
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