JP5865924B2 - 窒化又は浸炭窒化された鋼製部材の耐蝕性表面の製造方法 - Google Patents
窒化又は浸炭窒化された鋼製部材の耐蝕性表面の製造方法 Download PDFInfo
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- JP5865924B2 JP5865924B2 JP2014010625A JP2014010625A JP5865924B2 JP 5865924 B2 JP5865924 B2 JP 5865924B2 JP 2014010625 A JP2014010625 A JP 2014010625A JP 2014010625 A JP2014010625 A JP 2014010625A JP 5865924 B2 JP5865924 B2 JP 5865924B2
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- 230000007797 corrosion Effects 0.000 title claims description 29
- 238000005260 corrosion Methods 0.000 title claims description 29
- 229910000831 Steel Inorganic materials 0.000 title claims description 15
- 239000010959 steel Substances 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims description 92
- 230000003647 oxidation Effects 0.000 claims description 74
- 238000007254 oxidation reaction Methods 0.000 claims description 74
- 150000003839 salts Chemical class 0.000 claims description 45
- 230000008569 process Effects 0.000 claims description 41
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 39
- 238000005498 polishing Methods 0.000 claims description 38
- 239000000203 mixture Substances 0.000 claims description 11
- 230000003746 surface roughness Effects 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 238000005256 carbonitriding Methods 0.000 description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 230000001590 oxidative effect Effects 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000012360 testing method Methods 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 12
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 11
- 229910001416 lithium ion Inorganic materials 0.000 description 11
- 239000011734 sodium Substances 0.000 description 11
- 239000002609 medium Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- 238000005121 nitriding Methods 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 239000012736 aqueous medium Substances 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 5
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 229910013553 LiNO Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000001464 adherent effect Effects 0.000 description 3
- 239000003570 air Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 229910010586 LiFeO 2 Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 2
- 229910001947 lithium oxide Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002826 nitrites Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 229910001963 alkali metal nitrate Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001337 iron nitride Inorganic materials 0.000 description 1
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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- 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
- C23C8/40—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
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/02—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions
-
- 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
- C23C8/28—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 one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-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
-
- 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
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- 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
- C23C8/58—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 more than one element being applied in more than one step
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2226/00—Manufacturing; Treatments
- F16F2226/02—Surface treatments
- F16F2226/026—Surface treatments low-friction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Treatment Of Metals (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- ing And Chemical Polishing (AREA)
Description
これらの作用領域で使用される部材は、Rz=1.5μmの粗さを越えてはならない。一般的にこのような部材の粗さはそれどころか、Rzが1.0μm未満である。
シアネート、シアニド、及びカーボネートから成る溶融塩での浸炭窒化の後、アルカリ金属の水酸化物、炭酸塩、硝酸塩、及び亜硝酸塩から成る酸化性溶融物の中に部材を移し、そしてそこで表面を酸化させる。同時に浸炭窒化溶融物の付着性残分を酸化させる、すなわち塩浴中で浸炭窒化された部材に付着するシアネート及び少量のシアニドを酸化させて炭酸塩にする。引き続き、部材を水中で焼き入れする。するとこれらの部材は既に所望の黒色、耐摩耗性、及び耐蝕性を有する。しかしながら先に記載したように、粗さが高くなりすぎ、最初の値の二倍、三倍、又はそれどころか四倍の値になる。それゆえこれらの部材は、装填台から取り出し、そして研磨する。この際、研磨盤、研磨ベルトで、又はガラスビーズによる磨き、又は振動式研磨機での研磨石による潤滑研磨によって、酸化表面での例えばRz=1μm、又はそれ未満という相応する粗さの要求が再度得られる。
[先行技術文献]
[特許文献]
[特許文献1]欧州特許出願公開第0733720号明細書
[特許文献2]米国特許出願公開第2002/038679号明細書
[特許文献3]独国特許出願公開第69200127号明細書
第一の酸化工程として、窒化又は浸炭窒化された部材の表面の酸化、
直ちに引き続いた酸化工程での部材表面の少なくとも一回の第二の酸化、
最後の酸化に直ちに引き続いた、最終的な方法工程での部材表面の研磨。
窒化又は浸炭窒化された部材の表面の、リチウムイオン含有溶融塩中での酸化、
酸化に直ちに引き続いた、最終的な方法工程での部材表面の研磨。
NC 部材の浸炭窒化若しくは窒化
Q、Q1〜Qn 部材の酸化
D−CH 台からの部材の脱装填/取り外し
P 部材の研磨。
NaNO3 10〜50質量%、
KNO3 0〜40質量%、
NaNO2 0〜20質量%、
NaOH 20〜70質量%、
KOH 0〜60質量%、
Na2CO3 3〜30質量%、
K2CO3 3〜30質量%、
Li2CO3 0〜10質量%。
NaNO3 5〜15質量%、
NaNO2 1〜15質量%、
NaOH 20〜30質量%、
KOH 0〜60質量%、
Na2CO3 20〜40質量%。
水 35〜60質量%、
NaNO3 3〜15質量%、
NaNO2 1〜10質量%、
NaCl 0〜5質量%、
チオ硫酸ナトリウム 0〜5質量%、
NaOH 30〜50質量%、
KOH 30〜50質量%、
LiCl 0〜5質量%、
Li2NO3 0〜5質量%、
Na4P2O7 0〜5質量%。
水 40〜50質量%、
NaNO3 5〜10質量%、
NaNO2 1〜5質量%、
NaCl 0.5〜2質量%、
チオ硫酸ナトリウム 0.5〜2質量%、
NaOH 40〜45質量%。
NaNO3 20〜50質量%、
KNO3 0〜40質量%、
NaNO2 0〜5質量%、
NaOH 20〜60質量%、
KOH 0〜20質量%、
Na2CO3 3〜25質量%、
K2CO3 3〜15質量%、
Li2CO3 1〜30質量%
Li2NO3 1〜10質量%
LiCl 1〜10質量%。
NaNO3 30〜40質量%、
NaNO2 2質量%、
NaOH 40〜50質量%、
Na2CO3 3〜8質量%、
K2CO3 3〜8質量%、
Li2CO3 1.5〜10質量%
Li2NO3 0〜2質量%。
空気弁で使用するためのC45材料から成る、長さ18cm、直径12mmの104本のピストン棒を、90分間、チタン製るつぼ中のTF1(R)−浸炭窒化塩浴に、いわゆるTenifer(R)法(シアネート含分37.5質量%、シアニド含分4.2質量%、鉄含分200ppm未満、温度580℃+/−5℃、溶融物中のNa+/K+の比は約20/80)の標準的な工程条件下で浸炭窒化し、この結果、厚さ18〜21μmの化合層が生成した。平均粗さは、2つの棒について、3つの異なる箇所で長さ方向にDIN EN ISO 4287に従って測定し、算数的に平均したところ、処理前のもともとの部材は、Rzが0.52μmだった。
NaNO3 10質量%、NaNO2 3質量%、NaOH 10質量%、KOH 45質量%、Na2CO3 32質量%。温度は410℃であり、滞留時間は20分だった。これらの部材は酸化後に水中で焼き入れし、そして乾燥させた。これらの部材は、つや消しの黒色表面を有していた。2つの棒を取り出して測定した。粗さをそれぞれ3つの測定箇所について測定したところ、平均値でRz=2.02μmであった。
NaNO3 30質量%、NaNO2 2質量%、NaOH 39質量%、Na2CO3 20質量%、Li2CO3 9質量%、及び425℃の温度で35分間酸化し、その後、水中で焼き入れし、そして乾燥させた。このようにして処理した棒は、平均粗さRz=2.14μmであった。このようにして処理された棒は、製品名「Loeser」のSuperfinish研磨機を用いて、微細な研磨ベルトを使用してRz=0.62μmの粗さに研磨した。この方法は、図2に記載の本発明によるQQPの過程に相当する。
ガスばねでピストン棒として使用するための、C35材料から成る、寸法が長さ27cm、直径8mmの27本のピストン棒を、60分間、チタン製るつぼ中のTF1(R)−浸炭窒化塩浴に、いわゆるTenifer(R)法(シアネート含分37.5質量%、シアニド含分4.2質量%、鉄含分200ppm未満)、温度600℃+/−5℃という工程条件下で浸炭窒化し、この結果、厚さ18〜22μmの化合層が生成した。平均粗さは、2つの棒について、3つの異なる箇所で長さ方向にDIN EN ISO 4287に従って測定し、算数的に平均したところ、処理前のもともとの部材は、Rzが0.62μmだった。これらのピストン棒を浸炭窒化塩浴から取り出し、そして酸化性の、リチウム含有塩浴で45分間、430℃で酸化し、この際に溶融物は以下の成分から構成されていた:
NaNO3 30質量%、NaNO2 2質量%、NaOH 45質量%、KOH 5質量%、Na2CO3 5質量%、K2CO3 5質量%、Li2CO3 5質量%、LiNo3 3質量%。こうして処理された棒は、水中での冷却と洗浄後、平均粗さがRz=2.68μmであった。これらの棒はまず、平均粒径75μmのガラスビーズで1.5barの圧力で磨き、そしてその後、製品名「Loeser」という研磨機で粒度1000の研磨ベルトで非常に細かく研磨し、平均粗さRz=0.66μmにした。この方法変法は、図4に記載の方法に相当する。これらの棒をこの後、DIN EN ISO 9227に従った塩噴霧試験に導入する。中止の基準としては、表面上の最初の錆箇所の出現を用いた。これらの棒の平均耐久時間は、25本の棒について測定し算数的に平均したところ、420時間であり、この際に試験は720時間で中断し、試験中の1つの棒はなお錆びた箇所が無かった。この棒の耐久時間は、平均値形成の際に720時間で組み込んだ。
ガスばねでピストン棒として使用するための、C35材料から成る、長さ27cm、及び直径8mmの27本のピストン棒を実施例(2)のように60分間、チタン製るつぼ中のTF1(R)−浸炭窒化塩浴に、いわゆるTenifer(R)法(シアネート含分37.5質量%、シアニド含分4.2質量%、鉄含分200ppm未満)、温度600℃+/−5℃という工程条件下で浸炭窒化し、この結果、厚さ18〜22μmの化合層が生成した。平均粗さは、2つの棒について、3つの異なる箇所で長さ方向にDIN EN ISO 4287に従って測定し、算数的に平均したところ、実施例(2)と同様に、処理前のもともとの部材は、Rzが0.62μmだった。ピストン棒を浸炭窒化塩浴から取り出し、そして以下の組成の酸化性リチウム含有塩浴中で45分間、430℃で酸化した:
NaNO3 30質量%、NaNO2 1質量%、NaOH 40質量%、KOH 5質量%、Na2CO3 10質量%、K2CO3 5質量%、Li2CO3 8質量%、その後、水中で焼き入れした。まだ湿っている棒をさらに、沸騰している酸化性媒体中で142℃で25分間さらに酸化させ、この際に水性媒体は以下の成分から構成されていた:
水39質量%、NaNO3 10質量%、NaNO2 3質量%、NaCl 1質量%、Na2S2O3 1質量%、NaOH 45質量%、LiNO3 1質量%、その後取り出し、洗浄し、そして乾燥させた。これらの棒はこの後、製品名「Loeser」の研磨機を用いて、粒度1000の研磨ベルトで非常に細かく研磨し、Rz=0.72μmの平均粗さにした。この方法変法は、図2に記載の方法に相当する。研磨されたこれらの棒を、DIN EN ISO 9227に従った塩噴霧試験に導入した。中止の基準としては、表面上の最初の錆箇所の出現を用いた。これらの棒の平均耐久時間は、25本の棒について測定し算数的に平均したところ、414時間であり、この際に試験を500時間で中断し、試験中の1つの棒はなお錆びた箇所が無かった。この棒の耐久時間は、平均値形成の際に500時間で組み込んだ。
Claims (5)
- 最終的な研磨後に表面の粗さ特性高度RzがRz≦1.5μmである、窒化又は浸炭窒化された鋼製部材の耐蝕性表面の製造方法であって、以下の方法工程:
第一の酸化工程としての、窒化又は浸炭窒化された部材の表面の酸化、
直ちに引き続いた酸化工程での部材表面の少なくとも一回の第二の酸化の実施、
最後の酸化に直ちに引き続いた、最終的な方法工程での部材表面の研磨
を含み、
各酸化工程を実施するために、溶融塩を使用し、
酸化工程のために使用される溶融塩の組成が、第一の酸化工程と第二の酸化工程で異なっており、かつ酸化工程のための工程条件が、第一の酸化工程と第二の酸化工程で同一であるか、若しくは異なっている、前記製造方法。 - 2回より多く行われる酸化の際に、全酸化工程が直ちに連続して行われることを特徴とする、請求項1に記載の方法。
- 酸化工程の実施のために使用される溶融塩が、以下の成分:
NaNO3 10〜50質量%、
KNO3 0〜40質量%、
NaNO2 0〜20質量%、
NaOH 20〜70質量%、
KOH 0〜60質量%、
Na2CO3 3〜30質量%、
K2CO3 3〜30質量%、及び
Li2CO3 0〜10質量%
から構成されていることを特徴とする、請求項1又は2に記載の方法。 - 前記溶融塩が、以下の成分:
NaNO3 5〜15質量%、
NaNO2 1〜15質量%、
NaOH 20〜30質量%、
KOH 0〜60質量%、及び
Na2CO3 20〜40質量%、
から構成されていることを特徴とする、請求項3に記載の方法。 - 各酸化工程の実施のために溶融塩を用いて、5〜120分の滞留時間、及び300〜500℃の温度を適用することを特徴とする、請求項1から4までのいずれか1項に記載の方法。
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