KR100298847B1 - 진공질소고용화처리방법 - Google Patents
진공질소고용화처리방법 Download PDFInfo
- Publication number
- KR100298847B1 KR100298847B1 KR1019980046793A KR19980046793A KR100298847B1 KR 100298847 B1 KR100298847 B1 KR 100298847B1 KR 1019980046793 A KR1019980046793 A KR 1019980046793A KR 19980046793 A KR19980046793 A KR 19980046793A KR 100298847 B1 KR100298847 B1 KR 100298847B1
- Authority
- KR
- South Korea
- Prior art keywords
- nitrogen
- steel
- nitrogen gas
- steel product
- vacuum
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
Claims (1)
- 질소와 화학적 친화력이 강한 원소를 함유하는 강재를 진공로에서 1000℃ 이상의 오스테나이트(AUSTENITE)영역의 온도로 가열하여 내부압력을 0.01Torr이하로 30분이상을 유지하여서 강재의 표면에 형성된 부동태피막을 제거하는 부동태피막 제거공정인 제1공정과, 상기 제1공정에서 부동태피막이 제거된 강재를 1000℃ 이상의 오스테나이트(AUSTENITE)영역의 온도를 그대로 유지하면서 진공로 내부에 질소가스를 760Torr(1기압)이상이 되도록 주입하고 2시간 이상을 유지하여서 분자상의 질소가스가 강재표면에 0.5mm~2mm정도로 깊이 침투하여 확산됨으로서 질소원소가 강재 표면에 고용화 되도록하는 질소고용화공정인 제2공정과, 상기 제2공정에서 질소원소가 표면에 깊숙히 짐투하여 고용화된 강재를 냉매파이프로 구성된 냉각기가 설치되고 순환팬이 설치된 냉각실로 이동하여 상온의 질소가스를 1kgf/mm2이상의 압력으로 가압하여 주입하고 상기 냉각기를 가동시킴과 동시에 순환팬을 가동하여 질소가스를 대류시켜서 질소가스로 가압가스냉각으로 가압하고 급랭처리하여 용제화하는 냉각공정인 제3공정과, 상기 제3공정에서 질소고용된 강재를 600℃이하로 템퍼링(TEMPERING)처리 하여서, 강재표면의 석출질화물을 M2N형태로 제어함을 특징으로 하는 진공질소고용화 처리방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980046793A KR100298847B1 (ko) | 1998-11-02 | 1998-11-02 | 진공질소고용화처리방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980046793A KR100298847B1 (ko) | 1998-11-02 | 1998-11-02 | 진공질소고용화처리방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990014364A KR19990014364A (ko) | 1999-02-25 |
KR100298847B1 true KR100298847B1 (ko) | 2001-11-22 |
Family
ID=37528588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980046793A KR100298847B1 (ko) | 1998-11-02 | 1998-11-02 | 진공질소고용화처리방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100298847B1 (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020092018A (ko) * | 2001-06-01 | 2002-12-11 | 오준택 | 손목시계의 외장부품 가공방법 |
KR100474414B1 (ko) * | 2001-11-27 | 2005-03-08 | 조우석 | 고온에서 불활성의 중성가스 분위기에 의한 광휘열처리법 |
KR100902169B1 (ko) * | 2007-07-24 | 2009-06-10 | 쳉-시엔 리우 | 마르텐사이트계 스테인레스 표면경도 강화방법 |
KR101747094B1 (ko) | 2015-12-23 | 2017-06-15 | 주식회사 포스코 | 삼상 스테인리스강 및 그 제조방법 |
KR102106645B1 (ko) * | 2018-07-25 | 2020-05-04 | 주식회사 현대케피코 | 인젝터 부품의 물성 강화 방법 및 그 방법에 의해 제조된 인젝터 |
CN111575637B (zh) * | 2020-05-29 | 2021-12-14 | 青岛丰东热处理有限公司 | 一种奥氏体不锈钢表面低温氮碳共渗的方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60165370A (ja) * | 1984-02-07 | 1985-08-28 | Ishikawajima Harima Heavy Ind Co Ltd | ステンレス鋼の窒化処理方法 |
-
1998
- 1998-11-02 KR KR1019980046793A patent/KR100298847B1/ko not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60165370A (ja) * | 1984-02-07 | 1985-08-28 | Ishikawajima Harima Heavy Ind Co Ltd | ステンレス鋼の窒化処理方法 |
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Publication number | Publication date |
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KR19990014364A (ko) | 1999-02-25 |
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