JP4295350B1 - 熱処理炉の使用方法および熱処理方法ならびに熱処理炉 - Google Patents
熱処理炉の使用方法および熱処理方法ならびに熱処理炉 Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 43
- 238000011282 treatment Methods 0.000 claims abstract description 147
- 238000005121 nitriding Methods 0.000 claims abstract description 138
- 150000004767 nitrides Chemical class 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 59
- 230000026030 halogenation Effects 0.000 claims abstract description 49
- 238000005658 halogenation reaction Methods 0.000 claims abstract description 49
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000012298 atmosphere Substances 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims description 48
- 238000012545 processing Methods 0.000 claims description 36
- 230000003746 surface roughness Effects 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 53
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 238000005498 polishing Methods 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 12
- 238000003682 fluorination reaction Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 8
- 150000004820 halides Chemical class 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 6
- 150000002366 halogen compounds Chemical class 0.000 description 6
- 238000005422 blasting Methods 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 150000002222 fluorine compounds Chemical class 0.000 description 4
- 230000002140 halogenating effect Effects 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- -1 NF 3 gas Chemical class 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002436 steel type 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
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910000039 hydrogen halide Inorganic materials 0.000 description 1
- 239000012433 hydrogen halide Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000026045 iodination Effects 0.000 description 1
- 238000006192 iodination reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- DDTIGTPWGISMKL-UHFFFAOYSA-N molybdenum nickel Chemical compound [Ni].[Mo] DDTIGTPWGISMKL-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- 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
- C23C8/34—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
- C23C8/80—After-treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
【解決手段】鋼材を所定の雰囲気で加熱してハロゲン化処理および窒化処理を行う熱処理炉であって、上記窒化処理が行われる処理空間に露出する炉内構造物の表面を構成する材料として、Niが50質量%以上80質量%以下、かつFeが0質量%以上20質量%以下である合金が使用されている。これにより、上記炉内構造物の表面が窒化反応を起こしづらくなり、被処理物に対するハロゲン化処理および窒化処理を長期間にわたって安定的に実施することが可能となり、難窒化鋼種を含めたあらゆる鋼材に目的に応じた窒化層を安定的に形成させることが可能となる。
【選択図】なし
Description
上記熱処理炉は、上記窒化処理が行われる処理空間に露出する炉内構造物の表面を構成する材料として、Feが0質量%以上20質量%以下でNiが50質量%以上80質量%以下のNi基合金を使用し、
ハロゲン化処理および窒化処理を繰り返し行った際に、上記炉内構造物の表面に形成される窒化層の厚さが25μmを超えた場合に、その窒化層の少なくとも一部を除去して厚さ25μm以下かつ表面硬度900Hv以下とすることを要旨とする。
少なくとも窒化処理を行う処理空間に露出する炉内構造物の表面を構成する材料として、Feが0質量%以上20質量%以下でNiが50質量%以上80質量%以下のNi基合金を使用し、
ハロゲン化処理および窒化処理を繰り返し行う際に、上記炉内構造物の表面に形成される窒化層の厚さが25μmを超えた場合に、その窒化層の少なくとも一部を除去して厚さ25μm以下かつ表面硬度900Hv以下とすることを要旨とする。
上記窒化処理が行われる処理空間に露出する炉内構造物の表面を構成する材料として、Feが0質量%以上20質量%以下でNiが50質量%以上80質量%以下のNi基合金が使用され、ハロゲン化処理および窒化処理を繰り返し行う際に、上記炉内構造物の表面に形成される窒化層の厚さが25μmを超えた場合に、その窒化層の少なくとも一部を除去して厚さ25μm以下かつ表面硬度900Hv以下とされることを要旨とする。
2 ヒーター
3 炉壁
4 試験片
5 窒化テストピース
6 治具
7 ガス導入配管
8 ガス排出配管
9 炉内ガス攪拌ファン
10 攪拌ファン用モーター
Claims (7)
- 鋼材を所定の雰囲気で加熱してハロゲン化処理および窒化処理を行う熱処理炉の使用方法であって、
上記熱処理炉は、上記窒化処理が行われる処理空間に露出する炉内構造物の表面を構成する材料として、Feが0質量%以上20質量%以下でNiが50質量%以上80質量%以下のNi基合金を使用し、
ハロゲン化処理および窒化処理を繰り返し行った際に、上記炉内構造物の表面に形成される窒化層の厚さが25μmを超えた場合に、その窒化層の少なくとも一部を除去して厚さ25μm以下かつ表面硬度900Hv以下とすることを特徴とする熱処理炉の使用方法。 - 上記窒化層の少なくとも一部を除去することにより、その表面の表面粗さをRaで1.6μm以下とする請求項1記載の熱処理炉の使用方法。
- 上記炉内構造物の表面を構成する材料と同材質で同様の表面粗さとした試験片を処理空間内に配置し、上記ハロゲン化処理および窒化処理を繰り返し行った際に炉内構造物の表面に形成される窒化層の厚さを上記試験片の状態によって推定する請求項1または2記載の熱処理炉の使用方法。
- 鋼材を所定の雰囲気で加熱処理してハロゲン化処理および窒化処理を行う熱処理方法であって、
少なくとも窒化処理を行う処理空間に露出する炉内構造物の表面を構成する材料として、Feが0質量%以上20質量%以下でNiが50質量%以上80質量%以下のNi基合金を使用し、
ハロゲン化処理および窒化処理を繰り返し行う際に、上記炉内構造物の表面に形成される窒化層の厚さが25μmを超えた場合に、その窒化層の少なくとも一部を除去して厚さ25μm以下かつ表面硬度900Hv以下とすることを特徴とする熱処理方法。 - 鋼材を所定の雰囲気で加熱してハロゲン化処理および窒化処理を行う熱処理炉であって、
上記窒化処理が行われる処理空間に露出する炉内構造物の表面を構成する材料として、Feが0質量%以上20質量%以下でNiが50質量%以上80質量%以下のNi基合金が使用され、ハロゲン化処理および窒化処理を繰り返し行う際に、上記炉内構造物の表面に形成される窒化層の厚さが25μmを超えた場合に、その窒化層の少なくとも一部を除去して厚さ25μm以下かつ表面硬度900Hv以下とされることを特徴とする熱処理炉。 - 上記炉内構造物の表面の表面粗さがRaで1.6μm以下である請求項5記載の熱処理炉。
- 上記炉内構造物の表面を構成する材料と同材質とし、上記ハロゲン化処理および窒化処理を繰り返し行った際に炉内構造物の表面に形成される窒化層の厚さを推定するための試験片を処理空間内に配置した請求項5または6記載の熱処理炉。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008238174A JP4295350B1 (ja) | 2008-09-17 | 2008-09-17 | 熱処理炉の使用方法および熱処理方法ならびに熱処理炉 |
CN2009801365698A CN102159910B (zh) | 2008-09-17 | 2009-09-10 | 热处理炉和热处理方法以及热处理炉的使用方法 |
US13/063,006 US20110162758A1 (en) | 2008-09-17 | 2009-09-10 | Furnace of heat treatment, the method of heat treatment, and the directions for use of furnace of heat treatment |
PCT/JP2009/066209 WO2010032769A1 (ja) | 2008-09-17 | 2009-09-10 | 熱処理炉および熱処理方法ならびに熱処理炉の使用方法 |
US14/133,935 US9453277B2 (en) | 2008-09-17 | 2013-12-19 | Method of heat treatment and the directions for use of furnace of heat treatment |
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JP5650569B2 (ja) * | 2011-03-22 | 2015-01-07 | エア・ウォーター株式会社 | 鉄系材料の表面硬化装置および方法 |
JP6014954B2 (ja) * | 2012-06-04 | 2016-10-26 | 住友電工焼結合金株式会社 | 焼結部品の製造方法 |
EP2881492B1 (de) | 2013-12-06 | 2017-05-03 | Hubert Stüken GMBH & CO. KG | Verfahren zur Aufkohlung eines Tiefziehartikels oder eines Stanzbiegeartikels aus austenitischem nichtrostendem Edelstahl |
EP2881493B1 (de) * | 2013-12-06 | 2016-08-24 | Hubert Stüken GMBH & CO. KG | Verfahren zur Nitrocarburierung eines Tiefziehartikels oder eines Stanzbiegeartikels aus austenitischem nichtrostendem Edelstahl |
US10369755B2 (en) * | 2017-09-26 | 2019-08-06 | The Boeing Company | High-performance workpiece heating system and method |
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US2336366A (en) * | 1940-08-03 | 1943-12-07 | Int Nickel Co | Furnace |
US3232802A (en) * | 1963-03-11 | 1966-02-01 | North American Aviation Inc | Process of etching and etching bath for nickel base alloys |
US4145232A (en) * | 1977-06-03 | 1979-03-20 | Union Carbide Corporation | Process for carburizing steel |
CN86201813U (zh) * | 1986-03-27 | 1986-12-03 | 望城县湘东真空电炉厂 | 真空氮化热处理炉 |
US5445683A (en) * | 1992-05-13 | 1995-08-29 | Daidousanso Co., Ltd. | Nickel alloy products with their surfaces nitrided and hardened |
TW237484B (ja) * | 1992-09-16 | 1995-01-01 | Daido Oxygen | |
JPH06221766A (ja) * | 1993-01-25 | 1994-08-12 | Daido Steel Co Ltd | マツフル炉用マツフル |
JP3512477B2 (ja) * | 1994-07-16 | 2004-03-29 | 川崎重工業株式会社 | 熱交換器 |
JP2916752B2 (ja) * | 1995-09-08 | 1999-07-05 | 鹿児島県 | オーステナイト系ステンレス鋼表面の窒化処理方法 |
JP3428847B2 (ja) * | 1997-01-28 | 2003-07-22 | エア・ウォーター株式会社 | 窒化処理方法およびそれに用いる装置 |
JP2000073156A (ja) * | 1998-06-17 | 2000-03-07 | Nisshin Steel Co Ltd | 窒化ステンレス鋼材の製造方法 |
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CN102159910A (zh) | 2011-08-17 |
CN102159910B (zh) | 2013-07-17 |
WO2010032769A1 (ja) | 2010-03-25 |
US20140102593A1 (en) | 2014-04-17 |
JP2010070791A (ja) | 2010-04-02 |
US20110162758A1 (en) | 2011-07-07 |
US9453277B2 (en) | 2016-09-27 |
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