FR2431548B1 - - Google Patents
Info
- Publication number
- FR2431548B1 FR2431548B1 FR7821162A FR7821162A FR2431548B1 FR 2431548 B1 FR2431548 B1 FR 2431548B1 FR 7821162 A FR7821162 A FR 7821162A FR 7821162 A FR7821162 A FR 7821162A FR 2431548 B1 FR2431548 B1 FR 2431548B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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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
- C23C8/04—Treatment of selected surface areas, e.g. using masks
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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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Induction Heating (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7821162A FR2431548A1 (en) | 1978-07-17 | 1978-07-17 | Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7821162A FR2431548A1 (en) | 1978-07-17 | 1978-07-17 | Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2431548A1 FR2431548A1 (en) | 1980-02-15 |
FR2431548B1 true FR2431548B1 (en) | 1981-02-06 |
Family
ID=9210797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7821162A Granted FR2431548A1 (en) | 1978-07-17 | 1978-07-17 | Gas case hardening pipes for conveying abrasive materials - uses two centering pipes to feed gas and has ring induction heater and spray on trolley |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2431548A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2792806A (en) * | 1951-10-08 | 1957-05-21 | Ohio Commw Eng Co | Apparatus for plating the interior of hollow objects |
FR1335750A (en) * | 1962-10-03 | 1963-08-23 | Thomson Houston Comp Francaise | Improvements in the manufacturing process of tungsten tubes |
GB1309257A (en) * | 1970-02-18 | 1973-03-07 | Millingford Eng Co Ltd | Method of nitriding hollow bodies |
DE2445564A1 (en) * | 1974-09-24 | 1976-04-01 | Siemens Ag | Chemical vapour deposition processes for coating bores of tubes - tantalum coating obtd. by decompsn. of its chloride |
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1978
- 1978-07-17 FR FR7821162A patent/FR2431548A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2431548A1 (en) | 1980-02-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |