JPWO2023074660A5 - - Google Patents
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- JPWO2023074660A5 JPWO2023074660A5 JP2023519369A JP2023519369A JPWO2023074660A5 JP WO2023074660 A5 JPWO2023074660 A5 JP WO2023074660A5 JP 2023519369 A JP2023519369 A JP 2023519369A JP 2023519369 A JP2023519369 A JP 2023519369A JP WO2023074660 A5 JPWO2023074660 A5 JP WO2023074660A5
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- JP
- Japan
- Prior art keywords
- gas
- heat treatment
- supply device
- oxygen
- furnace
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 239000007789 gas Substances 0.000 claims 29
- 238000010438 heat treatment Methods 0.000 claims 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims 11
- 239000004215 Carbon black (E152) Substances 0.000 claims 6
- 229930195733 hydrocarbon Natural products 0.000 claims 6
- 150000002430 hydrocarbons Chemical class 0.000 claims 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 4
- 239000001301 oxygen Substances 0.000 claims 4
- 229910052760 oxygen Inorganic materials 0.000 claims 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 3
- 229910001882 dioxygen Inorganic materials 0.000 claims 3
- 238000000034 method Methods 0.000 claims 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims 2
- 239000010962 carbon steel Substances 0.000 claims 2
Claims (7)
前記熱処理炉は、雰囲気ガス供給装置が設けられており、
前記雰囲気ガス供給装置は、変成炉を有し、炭化水素ガスと、前記炭化水素ガスの支燃性ガスとして１ｖｏｌ％以上１５ｖｏｌ％以下の酸素ガスを有する窒素ガスとを前記変成炉で反応させて変成ガスを生成し、生成された前記変成ガスを雰囲気ガスとして前記熱処理炉内に供給するよう構成されている、
熱処理炉。 A heat treatment furnace that heats an object to be heat treated to perform heat treatment,
The heat treatment furnace is provided with an atmospheric gas supply device,
The atmospheric gas supply device includes a shift furnace, and reacts a hydrocarbon gas with a nitrogen gas containing 1 vol% or more and 15 vol% or less of oxygen gas as a combustion-supporting gas for the hydrocarbon gas in the shift furnace. It is configured to generate a metamorphic gas and supply the generated metamorphic gas as an atmospheric gas into the heat treatment furnace.
Heat treatment furnace.
請求項１に記載の熱処理炉。 The atmospheric gas supply device includes a nitrogen gas generator, a hydrocarbon supply device, another gas supply device that supplies a gas different from nitrogen gas and hydrocarbon gas, a mixer for mixing the gases, and the and the above-mentioned converter furnace for producing converted gas from the gas mixed in the mixer.
The heat treatment furnace according to claim 1.
前記その他のガス供給装置は、供給するガスの供給量を制御するための第２の制御弁を有し、
前記その他のガス供給装置は、前記酸素分圧と前記窒素ガス発生装置から供給される窒素ガスの供給量とに基づいて、窒素ガス中の酸素ガスの濃度が所定の濃度となるように、前記その他のガス供給装置から供給するガスの供給量を制御するよう構成されている、請求項２に記載の熱処理炉。 The nitrogen gas generator includes a first control valve for controlling the supply amount of the generated nitrogen gas, and an oxygen sensor that measures the partial pressure of oxygen in the nitrogen gas generated by the nitrogen gas generator. ,
The other gas supply device has a second control valve for controlling the amount of gas to be supplied,
The other gas supply device is configured to control the other gas supply device so that the concentration of oxygen gas in the nitrogen gas becomes a predetermined concentration based on the oxygen partial pressure and the supply amount of nitrogen gas supplied from the nitrogen gas generation device. The heat treatment furnace according to claim 2, wherein the heat treatment furnace is configured to control the amount of gas supplied from another gas supply device.
請求項１から４のいずれか一項に記載の熱処理炉。 The object to be heat treated is a motor core or carbon steel,
The heat treatment furnace according to any one of claims 1 to 4.
炭化水素ガスと、前記炭化水素ガスの支燃性ガスとして１ｖｏｌ％以上１５ｖｏｌ％以下の酸素ガスを有する窒素ガスとを変成炉で反応させて変成ガスを生成する第１工程と、
被熱処理物を炉内雰囲気ガスとして前記変成ガスを用いて熱処理する第２工程とを有する熱処理方法。 A heat treatment method that heats an object to be heat treated to perform heat treatment, the method comprising:
A first step of reacting a hydrocarbon gas with a nitrogen gas having 1 vol% or more and 15 vol% or less of oxygen gas as a combustion-supporting gas for the hydrocarbon gas in a shift furnace to generate a shift gas;
and a second step of heat-treating the object to be heat-treated using the metamorphic gas as the furnace atmosphere gas.
請求項６に記載の熱処理方法。
The object to be heat treated is a motor core or carbon steel,
The heat treatment method according to claim 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021178156 | 2021-10-29 | ||
| JP2021178156 | 2021-10-29 | ||
| PCT/JP2022/039635 WO2023074660A1 (en) | 2021-10-29 | 2022-10-25 | Heat treatment furnace and heat treatment method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2023074660A1 JPWO2023074660A1 (en) | 2023-05-04 |
| JPWO2023074660A5 true JPWO2023074660A5 (en) | 2023-09-28 |
| JP7407495B2 JP7407495B2 (en) | 2024-01-04 |
Family
ID=86157814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023519369A Active JP7407495B2 (en) | 2021-10-29 | 2022-10-25 | Heat treatment furnace and heat treatment method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7407495B2 (en) |
| WO (1) | WO2023074660A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2737610C2 (en) * | 1977-08-20 | 1983-10-27 | Messer Griesheim Gmbh, 6000 Frankfurt | Process for the production of a protective gas for the heat treatment of ferrous metals |
| JPS5582727A (en) * | 1978-11-24 | 1980-06-21 | Nisshin Steel Co Ltd | Annealing method for stainless steel |
| JP5477846B2 (en) * | 2009-09-29 | 2014-04-23 | Ｎｔｎ株式会社 | Steel heat treatment method and machine part manufacturing method |
| JP2018162475A (en) * | 2017-03-24 | 2018-10-18 | 大陽日酸株式会社 | Operation method of carburization furnace |
-
2022
- 2022-10-25 JP JP2023519369A patent/JP7407495B2/en active Active
- 2022-10-25 WO PCT/JP2022/039635 patent/WO2023074660A1/en active Application Filing
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