SE506530C2 - Sätt vid nitrering av stål - Google Patents

Sätt vid nitrering av stål

Info

Publication number: SE506530C2
Authority: SE; Sweden
Prior art keywords: steel; layer; nitriding; workpieces; gas
Prior art date: 1989-07-10

Application number

SE9002391A

Other languages

English (en)

Swedish (sv)

Other versions

SE9002391L (sv

SE506530C3 (sv

SE9002391D0 (sv

Inventor

Masaaki Tahara

Takakazu Tomoda

Kenzo Kitano

Teruo Minato

Original Assignee

Daido Hoxan Inc

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1989-07-10

Filing date

1990-07-09

Publication date

1999-07-26

1990-07-09 Application filed by Daido Hoxan Inc filed Critical Daido Hoxan Inc

1990-07-09 Publication of SE9002391D0 publication Critical patent/SE9002391D0/xx

1991-01-11 Publication of SE9002391L publication Critical patent/SE9002391L/

1998-08-10 Publication of SE506530C3 publication Critical patent/SE506530C3/sv

1999-07-26 Publication of SE506530C2 publication Critical patent/SE506530C2/sv

Links

229910000831 Steel Inorganic materials 0.000 title claims abstract description 48
239000010959 steel Substances 0.000 title claims abstract description 48
238000000034 method Methods 0.000 title claims description 19
238000006396 nitration reaction Methods 0.000 title description 11
238000005121 nitriding Methods 0.000 claims abstract description 37
239000012298 atmosphere Substances 0.000 claims abstract description 13
238000010438 heat treatment Methods 0.000 claims abstract description 8
238000010790 dilution Methods 0.000 claims description 2
239000012895 dilution Substances 0.000 claims description 2
229910052740 iodine Inorganic materials 0.000 claims 1
239000011630 iodine Substances 0.000 claims 1
239000010410 layer Substances 0.000 description 58
239000007789 gas Substances 0.000 description 39
230000015572 biosynthetic process Effects 0.000 description 15
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
230000000052 comparative effect Effects 0.000 description 9
229910052757 nitrogen Inorganic materials 0.000 description 8
239000002585 base Substances 0.000 description 7
238000004140 cleaning Methods 0.000 description 7
229910052751 metal Inorganic materials 0.000 description 7
239000002184 metal Substances 0.000 description 7
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
239000000463 material Substances 0.000 description 6
125000004433 nitrogen atom Chemical group N* 0.000 description 6
XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 5
239000011651 chromium Substances 0.000 description 5
238000001179 sorption measurement Methods 0.000 description 5
229910001220 stainless steel Inorganic materials 0.000 description 5
239000010935 stainless steel Substances 0.000 description 5
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
239000000460 chlorine Substances 0.000 description 4
229910052801 chlorine Inorganic materials 0.000 description 4
229910052804 chromium Inorganic materials 0.000 description 4
150000001875 compounds Chemical class 0.000 description 4
150000004767 nitrides Chemical class 0.000 description 4
229910000069 nitrogen hydride Inorganic materials 0.000 description 4
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
238000006243 chemical reaction Methods 0.000 description 3
150000001805 chlorine compounds Chemical class 0.000 description 3
239000000356 contaminant Substances 0.000 description 3
238000009792 diffusion process Methods 0.000 description 3
230000000694 effects Effects 0.000 description 3
229910052742 iron Inorganic materials 0.000 description 3
239000000203 mixture Substances 0.000 description 3
239000003960 organic solvent Substances 0.000 description 3
CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
239000003513 alkali Substances 0.000 description 2
229910021529 ammonia Inorganic materials 0.000 description 2
239000011247 coating layer Substances 0.000 description 2
230000007797 corrosion Effects 0.000 description 2
238000005260 corrosion Methods 0.000 description 2
239000010730 cutting oil Substances 0.000 description 2
230000006378 damage Effects 0.000 description 2
238000005238 degreasing Methods 0.000 description 2
238000003912 environmental pollution Methods 0.000 description 2
229910052739 hydrogen Inorganic materials 0.000 description 2
229910017604 nitric acid Inorganic materials 0.000 description 2
238000007747 plating Methods 0.000 description 2
239000012495 reaction gas Substances 0.000 description 2
230000009257 reactivity Effects 0.000 description 2
239000010802 sludge Substances 0.000 description 2
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
229910000975 Carbon steel Inorganic materials 0.000 description 1
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
229910021556 Chromium(III) chloride Inorganic materials 0.000 description 1
229910021565 Chromium(IV) fluoride Inorganic materials 0.000 description 1
CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
229910000705 Fe2N Inorganic materials 0.000 description 1
229910017389 Fe3N Inorganic materials 0.000 description 1
229910000727 Fe4N Inorganic materials 0.000 description 1
-1 FeCl 2 Chemical class 0.000 description 1
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
206010039509 Scab Diseases 0.000 description 1
229910000746 Structural steel Inorganic materials 0.000 description 1
BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
230000002411 adverse Effects 0.000 description 1
QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
238000005452 bending Methods 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
229910002091 carbon monoxide Inorganic materials 0.000 description 1
239000010962 carbon steel Substances 0.000 description 1
238000005256 carbonitriding Methods 0.000 description 1
238000003763 carbonization Methods 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 1
239000011636 chromium(III) chloride Substances 0.000 description 1
235000007831 chromium(III) chloride Nutrition 0.000 description 1
238000000576 coating method Methods 0.000 description 1
238000005520 cutting process Methods 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000007812 deficiency Effects 0.000 description 1
238000010494 dissociation reaction Methods 0.000 description 1
230000005593 dissociations Effects 0.000 description 1
238000009826 distribution Methods 0.000 description 1
229910001651 emery Inorganic materials 0.000 description 1
239000004744 fabric Substances 0.000 description 1
229910052731 fluorine Inorganic materials 0.000 description 1
239000011737 fluorine Substances 0.000 description 1
239000000383 hazardous chemical Substances 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
239000012535 impurity Substances 0.000 description 1
239000011261 inert gas Substances 0.000 description 1
229910000765 intermetallic Inorganic materials 0.000 description 1
SHXXPRJOPFJRHA-UHFFFAOYSA-K iron(iii) fluoride Chemical compound F[Fe](F)F SHXXPRJOPFJRHA-UHFFFAOYSA-K 0.000 description 1
238000003754 machining Methods 0.000 description 1
239000011159 matrix material Substances 0.000 description 1
238000000465 moulding Methods 0.000 description 1
239000012299 nitrogen atmosphere Substances 0.000 description 1
239000003921 oil Substances 0.000 description 1
239000001301 oxygen Substances 0.000 description 1
229910052760 oxygen Inorganic materials 0.000 description 1
230000035515 penetration Effects 0.000 description 1
238000005498 polishing Methods 0.000 description 1
238000002203 pretreatment Methods 0.000 description 1
230000001737 promoting effect Effects 0.000 description 1
239000000376 reactant Substances 0.000 description 1
239000011347 resin Substances 0.000 description 1
229920005989 resin Polymers 0.000 description 1
239000002002 slurry Substances 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
239000007787 solid Substances 0.000 description 1
239000000243 solution Substances 0.000 description 1
230000003746 surface roughness Effects 0.000 description 1
231100000167 toxic agent Toxicity 0.000 description 1
239000003440 toxic substance Substances 0.000 description 1
238000005406 washing Methods 0.000 description 1
239000002912 waste gas Substances 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1

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
- C23C8/02—Pretreatment of the material to be coated
- 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
- 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
- C23C8/34—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 more than one element being applied in more than one step

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

SE9002391A 1989-07-10 1990-07-09 Sätt vid nitrering av stål SE506530C2 (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP1177660A JPH089766B2 (ja)	1989-07-10	1989-07-10	鋼の窒化方法

Publications (4)

Publication Number	Publication Date
SE9002391D0 SE9002391D0 (sv)	1990-07-09
SE9002391L SE9002391L (sv)	1991-01-11
SE506530C3 SE506530C3 (sv)	1998-08-10
SE506530C2 true SE506530C2 (sv)	1999-07-26

Family

ID=16034877

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9002391A SE506530C2 (sv)	1989-07-10	1990-07-09	Sätt vid nitrering av stål

Country Status (6)

Country	Link
US (2)	US5013371A (ja)
JP (1)	JPH089766B2 (ja)
KR (1)	KR930003031B1 (ja)
CN (1)	CN1023238C (ja)
CH (1)	CH683270A5 (ja)
SE (1)	SE506530C2 (ja)

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JPH089766B2 (ja) *	1989-07-10	1996-01-31	大同ほくさん株式会社	鋼の窒化方法
US5254181A (en) *	1989-06-10	1993-10-19	Daidousanso Co., Ltd.	Method of nitriding steel utilizing fluoriding
US5382318A (en) *	1989-06-10	1995-01-17	Daidousanso Co., Ltd.	Hard austenitic stainless steel screw and a method for manufacturing the same
US5252145A (en) *	1989-07-10	1993-10-12	Daidousanso Co., Ltd.	Method of nitriding nickel alloy
JPH0791628B2 (ja) *	1989-12-22	1995-10-04	大同ほくさん株式会社	窒化炉装置
US5194097A (en) *	1990-10-01	1993-03-16	Daidousanso Co., Ltd.	Method of nitriding steel and heat treat furnaces used therein
JP3023222B2 (ja) *	1991-08-31	2000-03-21	大同ほくさん株式会社	硬質オーステナイト系ステンレスねじおよびその製法
US5460875A (en) *	1990-10-04	1995-10-24	Daidousanso Co., Ltd.	Hard austenitic stainless steel screw and a method for manufacturing the same
US6020025A (en) *	1990-11-20	2000-02-01	Daidousanso Co., Ltd.	Method of manufacturing a crank shaft
US5426998A (en) *	1990-11-20	1995-06-27	Daidousanso Co., Ltd.	Crank shaft and method of manufacturing the same
JP3026595B2 (ja) *	1990-11-20	2000-03-27	大同ほくさん株式会社	モータ回転軸およびその製法
DE4139975C2 (de) *	1991-12-04	2001-02-22	Ald Vacuum Techn Ag	Verfahren zur Behandlung von legierten Stählen und Refraktärmetallen und Anwendung des Verfahrens
JP3174422B2 (ja) *	1993-03-01	2001-06-11	エア・ウォーター株式会社	ステンレス窒化品
TW237484B (ja) *	1992-09-16	1995-01-01	Daido Oxygen
US5403409A (en) *	1993-03-01	1995-04-04	Daidousanso Co., Ltd.	Nitrided stainless steel products
US5447181A (en) *	1993-12-07	1995-09-05	Daido Hoxan Inc.	Loom guide bar blade with its surface nitrided for hardening
US5556483A (en) *	1994-04-18	1996-09-17	Daido Hoxan, Inc.	Method of carburizing austenitic metal
JP2881111B2 (ja) *	1994-06-17	1999-04-12	大同ほくさん株式会社	鋼の窒化方法
CN1106454C (zh) *	1995-05-25	2003-04-23	空气及水株式会社	钢的渗氮方法
US6090223A (en) *	1997-06-25	2000-07-18	Showa Denko K.K.	Chromium nitride film and method for forming the same
US6165597A (en) *	1998-08-12	2000-12-26	Swagelok Company	Selective case hardening processes at low temperature
US6093303A (en) *	1998-08-12	2000-07-25	Swagelok Company	Low temperature case hardening processes
US6547888B1 (en)	2000-01-28	2003-04-15	Swagelok Company	Modified low temperature case hardening processes
JP2003129213A (ja) *	2001-10-16	2003-05-08	Honda Motor Co Ltd	窒化処理鋼の製造方法
US20030155045A1 (en) *	2002-02-05	2003-08-21	Williams Peter C.	Lubricated low temperature carburized stainless steel parts
TWI258547B (en) *	2002-08-27	2006-07-21	Riken Co Ltd	Side rails for combined oil control ring and their nitriding method
US7247403B2 (en) *	2004-04-21	2007-07-24	Ut-Battelle, Llc	Surface modified stainless steels for PEM fuel cell bipolar plates
FR2942241B1 (fr) *	2009-02-18	2011-10-21	Hydromecanique & Frottement	Procede de traitement de pieces pour ustensiles de cuisine
CN101613853B (zh) *	2009-07-27	2010-11-03	西南交通大学	铁氮粉末冶金材料制备装置
CN103237920B (zh)	2010-10-05	2016-01-13	西尔科特克公司	耐磨涂层、包含该耐磨涂层的产品以及涂覆该耐磨涂层的方法
JP6125143B2 (ja)	2011-06-03	2017-05-10	日清紡ブレーキ株式会社	ディスクブレーキパッド用バックプレート及び、そのバックプレートを用いたディスクブレーキパッド
US9265542B2 (en) *	2012-06-27	2016-02-23	DePuy Synthes Products, Inc.	Variable angle bone fixation device
CN104894507B (zh) *	2015-04-28	2018-01-23	山东科技大学	不锈钢筛板的高温渗溶氮处理方法
US10876206B2 (en)	2015-09-01	2020-12-29	Silcotek Corp.	Thermal chemical vapor deposition coating
CN106637267A (zh) *	2015-10-28	2017-05-10	通用电气公司	用于从金属基材去除氧化物的方法和装置
KR101600576B1 (ko) *	2015-12-11	2016-03-08	서상원	폐가스 연소 및 재활용기능을 갖는 금형 열처리장치
US20170283943A1 (en)	2016-03-29	2017-10-05	Silcotek Corp.	Treated article, system having treated article, and process incorporating treated article
CN105803466B (zh) *	2016-04-11	2018-06-22	陆川县铁人厨具有限责任公司	铸铁内胆表面防锈处理工艺
US11161324B2 (en)	2017-09-13	2021-11-02	Silcotek Corp.	Corrosion-resistant coated article and thermal chemical vapor deposition coating process
US11421509B2 (en)	2017-10-16	2022-08-23	Pamala Ranee CRESS	High pressure float valve
WO2020252306A1 (en)	2019-06-14	2020-12-17	Silcotek Corp.	Nano-wire growth
CN110423977B (zh) *	2019-09-05	2021-06-18	合肥工业大学	一种以化学浸镀铁为预处理的铝材料气体渗氮方法
US12473635B2 (en)	2020-06-03	2025-11-18	Silcotek Corp.	Dielectric article
TWI798885B (zh) *	2020-11-18	2023-04-11	日商帕卡熱處理工業股份有限公司	金屬構件之處理方法及處理裝置

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US1958575A (en) *	1930-06-02	1934-05-15	Nitralloy Corp	Process for hardening iron, steel, and cast iron alloys by nitriding
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US3140205A (en) *	1962-07-26	1964-07-07	Chapman Division Crane Co	Process for nitriding steels of the low, medium and high alloy types by first removing the passive oxide surface film
JPS5114837A (en) *	1974-07-27	1976-02-05	Tokyo Heat Treating	Sutenresukono shintanaruiha nanchitsukashorihoho
SU638635A1 (ru) *	1977-05-24	1978-12-28	Московский Автомобильно-Дорожный Институт	Способ азотировани стальных деталей
JPS60215756A (ja) *	1984-01-27	1985-10-29	プロセダイン　コ−ポレイシヨン	ステンレス鋼の硬化方法
JPH089766B2 (ja) *	1989-07-10	1996-01-31	大同ほくさん株式会社	鋼の窒化方法

1989
- 1989-07-10 JP JP1177660A patent/JPH089766B2/ja not_active Expired - Lifetime
1990
- 1990-01-24 KR KR1019900000790A patent/KR930003031B1/ko not_active Expired - Lifetime
- 1990-02-12 US US07/479,013 patent/US5013371A/en not_active Expired - Lifetime
- 1990-03-20 CN CN90101529A patent/CN1023238C/zh not_active Expired - Lifetime
- 1990-07-09 SE SE9002391A patent/SE506530C2/sv not_active IP Right Cessation
- 1990-07-10 CH CH2300/90A patent/CH683270A5/fr not_active IP Right Cessation
1991
- 1991-01-22 US US07/643,953 patent/US5141567A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US5013371A (en)	1991-05-07
JPH089766B2 (ja)	1996-01-31
CH683270A5 (fr)	1994-02-15
SE9002391L (sv)	1991-01-11
JPH0344457A (ja)	1991-02-26
KR910003138A (ko)	1991-02-27
KR930003031B1 (ko)	1993-04-16
CN1023238C (zh)	1993-12-22
CN1048731A (zh)	1991-01-23
SE506530C3 (sv)	1998-08-10
SE9002391D0 (sv)	1990-07-09
US5141567A (en)	1992-08-25

Legal Events

Date	Code	Title	Description
2009-03-17	NUG	Patent has lapsed

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