DK156491B - Fremgangsmaade til undertrykkelse af skadelige overfladebelaegninger ved saltbadsnitridering af byggeelementer - Google Patents
Fremgangsmaade til undertrykkelse af skadelige overfladebelaegninger ved saltbadsnitridering af byggeelementer Download PDFInfo
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- DK156491B DK156491B DK470282A DK470282A DK156491B DK 156491 B DK156491 B DK 156491B DK 470282 A DK470282 A DK 470282A DK 470282 A DK470282 A DK 470282A DK 156491 B DK156491 B DK 156491B
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- DK
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- Prior art keywords
- nitriding
- bath
- building elements
- selenium
- salt
- Prior art date
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- 238000005121 nitriding Methods 0.000 title claims abstract description 19
- 238000000576 coating method Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 9
- 239000011248 coating agent Substances 0.000 title description 2
- 150000003839 salts Chemical class 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 9
- 239000011669 selenium Substances 0.000 claims abstract description 9
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- -1 alkali metal cyanide Chemical class 0.000 claims description 4
- 229940065287 selenium compound Drugs 0.000 claims description 4
- 150000003343 selenium compounds Chemical class 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 2
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 2
- 229940091258 selenium supplement Drugs 0.000 description 7
- 239000011888 foil Substances 0.000 description 6
- 230000004580 weight loss Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000001913 cyanates Chemical class 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- BVTBRVFYZUCAKH-UHFFFAOYSA-L disodium selenite Chemical compound [Na+].[Na+].[O-][Se]([O-])=O BVTBRVFYZUCAKH-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 150000003342 selenium Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229960001471 sodium selenite Drugs 0.000 description 1
- 235000015921 sodium selenite Nutrition 0.000 description 1
- 239000011781 sodium selenite Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 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
- C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
- C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
- C23C8/48—Nitriding
- C23C8/50—Nitriding of ferrous surfaces
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)
- Chemical Treatment Of Metals (AREA)
- Artificial Fish Reefs (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cosmetics (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Removal Of Specific Substances (AREA)
- Compounds Of Iron (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Catalysts (AREA)
- Secondary Cells (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Coating With Molten Metal (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Polyesters Or Polycarbonates (AREA)
- Detergent Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
DK 156491 B
Opfindelsen angâr en fremgangsmâde til under-trykkelse af skadelige overfladebelægninger ved saltbadsnitridering af byggeelementer af jern og stâl.
Saltbadsnitridering anvendes i dag verden over for 5 at forbedre slidegenskaberne og holdbarheden af genstande af stâl og jern. Saltbadfremgangsmâden finder ogsâ st0rre og st0rre anvendelse til forbedring af kor-rosionsbestandigheden af overfladen af byggeelementer af stâl og jern, hvorunder udviklingen af et specielt saltbad til 10 afk0ling af delene efter nitrider'ingen (DE-offentligg0rel-sesskrift nr. 2 934 1 13) har f0rt til, at nitrideringsfor-bindelseslagets egne korrosionsegenskaber endnu klart kan forbedres. Herved fâr saltbadnitrideringsmetoden ogsâ stor betydning til anvendelsesomrâder, hvor det ellers 15 er n0dvendigt at anvende det sjældne og dyre chrom.
Oprindeligt anvendtes der til saltbadnitridering ba-de, der indeholdt en stor andel cyanid. Det til nitride-ring n0dvendige cyanid fremstilledes ved gennemluftning, og endvidere blev disse bade drevet i titandigler.
20 De stigende krav til de lavest mulige milieube- lastninger har f0rt til, at de h0jcyanidholdige saltbade er blevet erstattet af i praksis cyanidfrie bade, ved hvilke der endvidere sker en regenerering af badene ved hjælp af et organisk stof, hvorved dannelsen af giftige 25 alkalisalte kan undgâs (DE-offentligg0relsesskrift nr.
2 310 815).
Eftersom cyanider i nitrideringsbade ved temperatu-rer pâ mellem 550°C og 650°C virker stærkt reducerende, og cyanater pâ den anden side nærmere har tendens til at 30 afgive oxygen, viser de kun liât cyanidholdige nitrideringsbade en tendens til lejlighedsvis at oxidere det ni-triderede forbindelseslag pâ en sâdan mâde, at der pâ over-f laden af byggeelementerne ogsâ efter afk0lingen og vasken bliver en vanskeligt fjernelig, st0vformig belasgning 35 tilbage. Ofte er sâdanne belægninger ikke acceptable til den videre anvendelse af den nitriderede del, eftersom de f. eks. ved hydraulikaggregater gâr over i oliestr0mmen « vsS -P sJL 1 ηΛτηηίΑ λ ιλ £ λ "I*· /* 1 Tr £ rk ν· y*\ 4* ί 1
DK 156491 B
2 gnidningsslid. For at undgâ sâdanne virkninger er en tidkrævende rensning af delene ofte nadvendig.
Endvidere kan der fremkomme rustrade overflade-belægninger, nâr byggeelementer behandles i et sâdant nitrideringsbad.
5 Et nitrideringsbad, der befinder sig i en pâ overfladekvaliteten af de nitriderede byggeelementer skadelige oxiderende tilstand, er blandt andet karak- teriseret ved, at en stâlfolie af stâl med 0,05% carbon efter en behandlingsvarighed pâ 90 minutter 10 viser et vægttab i starrelsesordenen pâ op til nogle 100 mg/dm , idet behandlingen af den samme stâlfolie under betingelser, der forhindrer dannelsen af be- lægninger, farer til en vægtforagelse pâ op til 2 ca. 70 mg/dm . Det har dog hidtil ikke været muligt 15 forud at bestemrae, hvornâr et bad fremkalder gode, og hvornâr det fremkalder ikke-acceptable resultater med hensyn til overfladerenligheden.
Sâdanne saltbade har hidtil pâ omstændelig og kostbar mâde ved kraftig opvarmning og klaring 20 mâttet regenereres, for at de igen giver gode resultater med hensyn til overfladerenligheden af de nitriderede byggeelementer. Disse gunstige egenskaber viste de sâledes regenererede saltbade dog kun i relativ kort tid og mâtte derefter enten pâny regene-25 reres eller nyfremstilles.
I CH patentskrift nr. 359 339 beskrives saltbade, ved hvis anvendelse slidfastheden kan forbedres.
Sâdanne bade indeholder 20-30% alkalicyanid, 15-50% alkalicyanat, alkalichlorider, alkalicarbonater 30 og 0,1-5% selen eller tellur. Selen og tellur trænger derved ind i overfladelaget og medfarer en haj slid-fasthed. Imidlertid kan anvendelsen af badene ikke forhindre dannelsen af skadelige overfladelag.
Hensigten med opfindelsen var sâledes at 35 angive en fremgangsmâde til undertrykkelse af skadelige overfladebelægninger ved saltbadsnitridering af byggeelementer af stâl og jern.
DK 156491 B
3
Dette opnâs ifolge opfindelsen ved, at man til nitrideringen benytter et saltbad bestâende af 0,01-3% cyanid pâ form af alkalimetalcyanid, 25-45% cyanat pâ form af alkalimetalcyanat, 0,'5-100 ppm selen pâ form af selenforbindelser og/eller 5 elementært selen og resten alkalimetalcarbonat.
Selenet eller selenforbindelserne kan herunder sættes direkte til det flydende saltbad,eller der anven-des ved indsmeltningen af badet salte, som allerede un-der deres fremstilling er blevet tilsat tilsvarende 10 mængder se„len.
Temperaturen af badet er fortrinsvis mellem 550°- 650°C. Endvidere anvendes med fordel en saltbad-digel, der er sâ jernfri som muligt. Derved har det vist sig, at digler af titan eller næsten jernfri chrom-nik-15 kel-legeringer, som dog ogsâ kan indeholde op til 10 vægt-% jern, har været egnede.
Det if0lge opfindelsen angivne indhold af selen eller selenforbindelser forhindrereffektivtdannelsen af belægninger pâ overfladen af de nitrerede genstande i 2 0 ni trideringssaltbadene.
De f0lgende eksempler belyser den omhandlede ’fremgangsmâde nærmere:
Eksempel 1 25 Et milieuvenligt, cyanidfattigt nitrideringsbad op- varmedes i en elektrisk opvarmet ovn i en titandigel med mâlene 35/70 cm. Badet havde f01gende sammensætning: 38% CNO , 0,5% CN , ca. 15% carbonat, idet resten var natrium og kalium.
30 En stâlfolie med et carbonindhold pâ 0,05% viste· efter 90 minutters behandling i dette bad og afk0ling i 2 vand et vægttab pâ 185 mg/dm . I samme tidsrum behandle-de genstande af stâl havde pâ overfladen en sort aft0r-religt belægning.
35 Badet tilsattes derefter ved hjælp af en ske ca.
1,44 g SeC>2 (d.v.s. ved 85 kg saltindhold svarende til 12 ppm).
»
DK 156491 B
4
En efter selentilsætningen som ovenfor gennemf0rt 2 pr0ve gav for folien en vægtfor0gelse pâ 51 mg/dm . Sam-tidig behandlede genstande af stâl havde en lysegrâ, fuldstændig belægningsfri overflade. Den gunstige virk-ning af denne selentilsætning holdt i adskillige uger.
5
Eksempel 2
Et nitrideringssaltbad som i eksempel 1, der befandt sig i en tilstand, der var karakteriseret ved et vægttab af stâlfolien, tilsattes 1,86g natriumselenit. De deref-10 ter behandlede folier viste en vægtfor0gelse, de behandlede dele havde ligeledes en ren overflade.
Eksempel 3
En produktionsportion pâ 1 t af de ovennævnte salte tilsattes 14,4 g selendioxid. Ved anvendelsen af ^5 et sâdant sait ved praktisk drift fremkom der i intet tilfælde mere badtilstande, der var karakteriseret ved vægttab af en stâlfolie.
20 25 30 35
Claims (3)
1. Fremgangsmâde til undertrykkelse af skade-lige overfladebelægninger ved saltbadsnitridering af byggeelementer af jern og stâl kendeteg-n e t ved, at man til nitrideringen benytter et 5 saltbad bestâende af 0,01-3% cyanid pâ form af alkali-metalcyanid, 25-45% cyanat pâ form af alkalimetal-cyanat, 0,5-100 ppm selen pâ form af selenforbind-elser og/eller elementært selen og resten alkali-metalcarbonat.
2. Fremgangsmâde ifolge krav 1 k e n d e- t e g n e t ved, at temperaturen i badet er 550-650°C.
3. Fremgangsmâde ifolge krav 1 og2kende-t e g n e t ved, at badet anvendes i en digel af 15 titan eller af en næsten jernfri chrom-nikkellegering. 20 25 30 35
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813142318 DE3142318A1 (de) | 1981-10-24 | 1981-10-24 | Salzbad zum nitrieren von eisenwerkstoffen |
| DE3142318 | 1981-10-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK470282A DK470282A (da) | 1983-04-25 |
| DK156491B true DK156491B (da) | 1989-08-28 |
| DK156491C DK156491C (da) | 1990-02-12 |
Family
ID=6144805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK470282A DK156491C (da) | 1981-10-24 | 1982-10-22 | Fremgangsmaade til undertrykkelse af skadelige overfladebelaegninger ved saltbadsnitridering af byggeelementer |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US4492604A (da) |
| EP (1) | EP0077926B1 (da) |
| JP (1) | JPS5877567A (da) |
| AT (1) | ATE16821T1 (da) |
| AU (1) | AU555316B2 (da) |
| BR (1) | BR8206180A (da) |
| CA (1) | CA1208527A (da) |
| DE (2) | DE3142318A1 (da) |
| DK (1) | DK156491C (da) |
| EG (1) | EG15636A (da) |
| ES (1) | ES516409A0 (da) |
| FI (1) | FI70053C (da) |
| HU (1) | HU188217B (da) |
| IN (1) | IN155704B (da) |
| PT (1) | PT75706B (da) |
| RO (1) | RO85594B (da) |
| TR (1) | TR21943A (da) |
| YU (1) | YU43102B (da) |
| ZA (1) | ZA826635B (da) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3403463A1 (de) * | 1984-02-01 | 1985-08-08 | Kraftwerk Union AG, 4330 Mülheim | Werkstoffpaarung fuer hochbeanspruchte maschinenelemente |
| US5707460A (en) * | 1995-07-11 | 1998-01-13 | Porter-Cable Corporation | Method of producing parts having improved wear, fatigue and corrosion resistance from medium alloy, low carbon steel and parts obtained therefrom |
| US6379473B1 (en) * | 1999-05-28 | 2002-04-30 | Honda Giken Kogyo Kabushiki Kaisha | Method of manufacturing laminated ring using molten salt composition |
| US6645566B2 (en) * | 1999-06-01 | 2003-11-11 | Jong Ho Ko | Process for heat treatment nitriding in the presence of titanium and products produced thereby |
| JP2003502085A (ja) * | 1999-06-14 | 2003-01-21 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 電気的に接続された機器用の妨害防止供給導線を有するｍｒｉ装置 |
| US6746546B2 (en) | 2001-11-02 | 2004-06-08 | Kolene Corporation | Low temperature nitriding salt and method of use |
| KR100513563B1 (ko) * | 2002-05-21 | 2005-09-09 | 고종호 | 티탄 존재 하에서의 금속 모재의 질화 열처리방법 |
| US20070013279A1 (en) * | 2004-03-23 | 2007-01-18 | Macmillan Michael | Bathroom cabinet and method of installation |
| JP4943018B2 (ja) * | 2006-02-23 | 2012-05-30 | ヤマハリビングテック株式会社 | 浴室用鏡および浴室用鏡の取付構造 |
| US7732014B2 (en) | 2006-04-18 | 2010-06-08 | Philos Jongho Ko | Process for diffusing titanium and nitride into a material having a generally compact, granular microstructure |
| US7438769B2 (en) * | 2006-04-18 | 2008-10-21 | Philos Jongho Ko | Process for diffusing titanium and nitride into a material having a coating thereon |
| FR2972459B1 (fr) | 2011-03-11 | 2013-04-12 | Hydromecanique & Frottement | Bains de sels fondus pour la nitruration de pieces mecaniques en acier, et un procede de mise en oeuvre |
| CN103122446A (zh) * | 2013-02-02 | 2013-05-29 | 大连经济技术开发区圣洁真空技术开发有限公司 | 定量钛氮化碳氮共渗技术 |
| CN103882370A (zh) * | 2014-03-24 | 2014-06-25 | 合肥美桥汽车传动及底盘系统有限公司 | 42CrMo或40Cr转向节软氮化处理工艺 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR359339A (fr) * | 1904-11-15 | 1906-03-21 | Siemens Et Halske Aktien Ges | Procédé de fabrication de corps à incandescence pour lumière électrique par la formation d'un dépot métallique sur une ame métallique |
| US2875095A (en) * | 1956-10-06 | 1959-02-24 | Gold Und Silber Scheldeanstalt | Method of producing surface layers resistant to wear |
| DE1052424B (de) * | 1957-06-26 | 1959-03-12 | Degussa | Verfahren zum Aufkohlen und Carbonitrieren von Eisen und Stahl |
| DE1237872B (de) * | 1961-12-07 | 1967-03-30 | Degussa | Metallauskleidung fuer Behaelter zum Salzbadnitrieren von Eisenmetallen |
| FR86012E (fr) * | 1963-12-11 | 1965-11-26 | Berliet Automobiles | éléments de frottement résistant particulièrement à l'usure par abrasion |
| US3507757A (en) * | 1966-04-04 | 1970-04-21 | Jacques Jean Caubet | Treatment of metal surfaces |
| US4019928A (en) * | 1973-03-05 | 1977-04-26 | Duetsche Gold- Und Silber-Scheideanstalt Vormals Roessler | Process for nitriding iron and steel in salt baths regenerated with triazine polymers |
| DE2514398C2 (de) * | 1975-04-02 | 1984-04-05 | Degussa Ag, 6000 Frankfurt | Salzbad zur Abschreckung badnitrierter Bauteile |
| DE2934113C2 (de) * | 1979-08-23 | 1985-05-09 | Degussa Ag, 6000 Frankfurt | Verfahren zur Erhöhung der Korrosionsbeständigkeit nitrierter Bauteile aus Eisenwerkstoffen |
-
1981
- 1981-10-24 DE DE19813142318 patent/DE3142318A1/de not_active Withdrawn
-
1982
- 1982-09-08 FI FI823106A patent/FI70053C/fi not_active IP Right Cessation
- 1982-09-09 ZA ZA826635A patent/ZA826635B/xx unknown
- 1982-09-15 AU AU88411/82A patent/AU555316B2/en not_active Ceased
- 1982-09-25 EP EP82108892A patent/EP0077926B1/de not_active Expired
- 1982-09-25 DE DE8282108892T patent/DE3267827D1/de not_active Expired
- 1982-09-25 AT AT82108892T patent/ATE16821T1/de not_active IP Right Cessation
- 1982-10-06 TR TR21943A patent/TR21943A/xx unknown
- 1982-10-11 ES ES516409A patent/ES516409A0/es active Granted
- 1982-10-18 JP JP57181494A patent/JPS5877567A/ja active Granted
- 1982-10-20 US US06/435,401 patent/US4492604A/en not_active Expired - Fee Related
- 1982-10-20 PT PT75706A patent/PT75706B/pt not_active IP Right Cessation
- 1982-10-21 YU YU2374/82A patent/YU43102B/xx unknown
- 1982-10-22 CA CA000414031A patent/CA1208527A/en not_active Expired
- 1982-10-22 BR BR8206180A patent/BR8206180A/pt not_active IP Right Cessation
- 1982-10-22 RO RO108854A patent/RO85594B/ro unknown
- 1982-10-22 DK DK470282A patent/DK156491C/da active
- 1982-10-22 IN IN1258/CAL/82A patent/IN155704B/en unknown
- 1982-10-22 HU HU823385A patent/HU188217B/hu not_active IP Right Cessation
- 1982-10-23 EG EG627/82A patent/EG15636A/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| ATE16821T1 (de) | 1985-12-15 |
| YU43102B (en) | 1989-02-28 |
| FI70053C (fi) | 1986-09-12 |
| DE3267827D1 (en) | 1986-01-16 |
| FI823106A0 (fi) | 1982-09-08 |
| JPH0217622B2 (da) | 1990-04-23 |
| RO85594B (ro) | 1985-03-30 |
| DK470282A (da) | 1983-04-25 |
| DK156491C (da) | 1990-02-12 |
| US4492604A (en) | 1985-01-08 |
| ZA826635B (en) | 1983-07-27 |
| AU8841182A (en) | 1983-04-28 |
| AU555316B2 (en) | 1986-09-18 |
| ES8401531A1 (es) | 1983-12-01 |
| FI823106L (fi) | 1983-04-25 |
| EG15636A (en) | 1989-01-30 |
| YU237482A (en) | 1985-03-20 |
| PT75706B (en) | 1985-06-28 |
| IN155704B (da) | 1985-02-23 |
| EP0077926B1 (de) | 1985-12-04 |
| RO85594A (ro) | 1985-03-15 |
| ES516409A0 (es) | 1983-12-01 |
| JPS5877567A (ja) | 1983-05-10 |
| PT75706A (de) | 1982-11-01 |
| FI70053B (fi) | 1986-01-31 |
| BR8206180A (pt) | 1983-09-20 |
| DE3142318A1 (de) | 1983-05-05 |
| TR21943A (tr) | 1985-11-28 |
| HU188217B (en) | 1986-03-28 |
| EP0077926A1 (de) | 1983-05-04 |
| CA1208527A (en) | 1986-07-29 |
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