JPS5713169A - Method for controlling concentration of carbon in carburizing atmosphere - Google Patents
Method for controlling concentration of carbon in carburizing atmosphereInfo
- Publication number
- JPS5713169A JPS5713169A JP8561080A JP8561080A JPS5713169A JP S5713169 A JPS5713169 A JP S5713169A JP 8561080 A JP8561080 A JP 8561080A JP 8561080 A JP8561080 A JP 8561080A JP S5713169 A JPS5713169 A JP S5713169A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- concn
- carbon
- measured
- controller
- 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.)
- Pending
Links
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
- C23C8/06—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
- C23C8/20—Carburising
- C23C8/22—Carburising 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)
Abstract
PURPOSE:To accurately control the carbon potential in a heat treatment furnace by measuring the temp. and concns. of Co and O2 of the gaseous atmosphere consisting essentially of nitrogen in said furnace, and controlling the rate of supply of enrich gas into the furnace from the deviation between the set value of a target O2 concn. and the O2 concn. in the furnace. CONSTITUTION:At the time of carburizing the surfaces of iron and steel products in a carburizing furnace 1, the gas in the furnace is sampled through a take-out pipe 5, and is measured of CO concn. with an analyzer 6. The measured value thereof is fed to a carbon concn. controller 7. On the other hand, the in-furnace temp. signal measured with a thermocouple 3 is also fed to the controller 7, and a set signal is also sent from a carbon concn. setter 8 to the controller 7, by which the target O2 conc. corresponding to the equil. carbon concn. of the gaseous atmosphere is calculated and outputted. This and the measured signal of the in-furnace O2 concn. from a varying oxygen concentration cell 2 are compared, and the result thereof is outputted to a control valve V to control the degree of opening of the valve V, thereby adequately supplying the enrich gas of hydrocarbon and accurately controlling the carbon concn. in the furnace to the target value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8561080A JPS5713169A (en) | 1980-06-24 | 1980-06-24 | Method for controlling concentration of carbon in carburizing atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8561080A JPS5713169A (en) | 1980-06-24 | 1980-06-24 | Method for controlling concentration of carbon in carburizing atmosphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5713169A true JPS5713169A (en) | 1982-01-23 |
Family
ID=13863594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8561080A Pending JPS5713169A (en) | 1980-06-24 | 1980-06-24 | Method for controlling concentration of carbon in carburizing atmosphere |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5713169A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144792A (en) * | 1982-02-23 | 1983-08-29 | 日本原子力研究所 | Method controlling carbon potential |
| JPS62243754A (en) * | 1986-04-15 | 1987-10-24 | Isuzu Motors Ltd | Control device for carburization furnace atmosphere |
| KR100825606B1 (en) * | 2001-12-24 | 2008-04-25 | 주식회사 포스코 | Combution control apparatus in heating furnace |
| JP2010037597A (en) * | 2008-08-05 | 2010-02-18 | Chino Corp | Carbon potential operational equipment |
-
1980
- 1980-06-24 JP JP8561080A patent/JPS5713169A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144792A (en) * | 1982-02-23 | 1983-08-29 | 日本原子力研究所 | Method controlling carbon potential |
| JPH034485B2 (en) * | 1982-02-23 | 1991-01-23 | Japan Atomic Energy Res Inst | |
| JPS62243754A (en) * | 1986-04-15 | 1987-10-24 | Isuzu Motors Ltd | Control device for carburization furnace atmosphere |
| KR100825606B1 (en) * | 2001-12-24 | 2008-04-25 | 주식회사 포스코 | Combution control apparatus in heating furnace |
| JP2010037597A (en) * | 2008-08-05 | 2010-02-18 | Chino Corp | Carbon potential operational equipment |
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