FR2375334A1 - Hot dip coating of steel strip without flux - by prior heat treatment in controlled atmos. via coke oven gas with high thermal efficiency (BR 8.8.78) - Google Patents
Hot dip coating of steel strip without flux - by prior heat treatment in controlled atmos. via coke oven gas with high thermal efficiency (BR 8.8.78)Info
- Publication number
- FR2375334A1 FR2375334A1 FR7738888A FR7738888A FR2375334A1 FR 2375334 A1 FR2375334 A1 FR 2375334A1 FR 7738888 A FR7738888 A FR 7738888A FR 7738888 A FR7738888 A FR 7738888A FR 2375334 A1 FR2375334 A1 FR 2375334A1
- Authority
- FR
- France
- Prior art keywords
- zone
- contg
- strip
- layer
- flux
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 3
- 238000010438 heat treatment Methods 0.000 title abstract 3
- 239000010959 steel Substances 0.000 title abstract 3
- 239000000571 coke Substances 0.000 title abstract 2
- 230000004907 flux Effects 0.000 title abstract 2
- 238000003618 dip coating Methods 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 abstract 3
- 239000000956 alloy Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 2
- 239000005864 Sulphur Substances 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 229910020220 Pb—Sn Inorganic materials 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
Abstract
The surfaces of steel sheet or strip are prepd. prior to coating by immersion in a hot molten metal bath (M) without using a flux. Prepn. consists of feeding the strip through two successive heating zones (a,b); and then through a cooling zone (c) with a protective atmos. in which the strip is cooled to ca. the temp. of bath (M). The capacity of the steel strip to absorb radiant heating energy in zones (a,b) is increased by forming a visible coating (a1), contg. iron oxide, in zone (a), and preserving layer (a1) in zone (b). Layer (a1) is pref. completely reduced in zone (c) by an atmos. contg. by vol. min 10% H2. Layer (a) may consist of iron oxysulphide,obtd. by using combustion gases in zone (a) contg. max. 2% free O2 and 0-36 g of sulphur per m3, esp. by burning fuel in air to attain min. 1205 degrees C in zone (a), the colour of layer (a1) being dark yellow to blue. Zone (b) is pref. separate from zone (a) and contains below 5% H2. See also 2375335. Used for all types of metal (M), e.g. Al or its alloys; Zn or its alloys; Pb-Sn alloys. Coke oven gas contg. sulphur can be used in the process and a substantial increase in thermal efficiency is obtd.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/753,623 US4123292A (en) | 1976-12-23 | 1976-12-23 | Method of treating steel strip and sheet surfaces for metallic coating |
US05/753,622 US4123291A (en) | 1976-12-23 | 1976-12-23 | Method of treating steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2375334A1 true FR2375334A1 (en) | 1978-07-21 |
FR2375334B1 FR2375334B1 (en) | 1980-03-21 |
Family
ID=27115782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7738888A Granted FR2375334A1 (en) | 1976-12-23 | 1977-12-22 | Hot dip coating of steel strip without flux - by prior heat treatment in controlled atmos. via coke oven gas with high thermal efficiency (BR 8.8.78) |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS53102236A (en) |
AU (1) | AU509460B2 (en) |
BR (1) | BR7708572A (en) |
CA (1) | CA1104910A (en) |
FR (1) | FR2375334A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2433588A1 (en) * | 1978-08-17 | 1980-03-14 | Selas Corp Of America | PROCESS FOR REDUCING THE FORMATION OF METAL OXIDE ON A HOT-COATED METAL SHEET, AND FURNACE FOR CARRYING OUT THE METHOD |
FR2470803A1 (en) * | 1979-12-05 | 1981-06-12 | Nippon Steel Corp | METHOD OF CONTINUOUSLY ANNUCING A LOW CARBON NUT STEEL STRIP |
EP0795616A1 (en) * | 1996-03-13 | 1997-09-17 | STEIN HEURTEY, Société Anonyme: | Process for continuously heat treating metal strip in different atmospheres |
US7384489B2 (en) | 2002-09-13 | 2008-06-10 | Drever International S.A. | Atmosphere control during continuous heat treatment of metal strips |
WO2016156125A1 (en) * | 2015-04-02 | 2016-10-06 | Cockerill Maintenance & Ingénierie S.A. | Method and device for reaction control |
EP3135778A1 (en) * | 2015-08-31 | 2017-03-01 | Cockerill Maintenance & Ingenierie S.A. | Method and device for reaction control |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6260825A (en) * | 1985-09-10 | 1987-03-17 | Kawasaki Steel Corp | Preheating method in continuous heat treatment of steel strip |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR845086A (en) * | 1938-02-18 | 1939-08-10 | Method and device for the heat treatment of metallic objects | |
FR2272193A1 (en) * | 1974-05-24 | 1975-12-19 | Armco Steel Corp | |
FR2282471A1 (en) * | 1974-08-22 | 1976-03-19 | Armco Steel Corp | PROCESS FOR THE PREPARATION OF A STRIP OF CARBON STEEL WITH A VIEW TO THE DEPOSIT OF A QUENCH COATING WITHOUT FLUX |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52155002A (en) * | 1976-06-18 | 1977-12-23 | Torio Kk | Receiver |
-
1977
- 1977-12-19 AU AU31741/77A patent/AU509460B2/en not_active Expired
- 1977-12-22 BR BR7708572A patent/BR7708572A/en unknown
- 1977-12-22 JP JP15500177A patent/JPS53102236A/en active Granted
- 1977-12-22 CA CA293,785A patent/CA1104910A/en not_active Expired
- 1977-12-22 FR FR7738888A patent/FR2375334A1/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR845086A (en) * | 1938-02-18 | 1939-08-10 | Method and device for the heat treatment of metallic objects | |
FR2272193A1 (en) * | 1974-05-24 | 1975-12-19 | Armco Steel Corp | |
FR2282471A1 (en) * | 1974-08-22 | 1976-03-19 | Armco Steel Corp | PROCESS FOR THE PREPARATION OF A STRIP OF CARBON STEEL WITH A VIEW TO THE DEPOSIT OF A QUENCH COATING WITHOUT FLUX |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2433588A1 (en) * | 1978-08-17 | 1980-03-14 | Selas Corp Of America | PROCESS FOR REDUCING THE FORMATION OF METAL OXIDE ON A HOT-COATED METAL SHEET, AND FURNACE FOR CARRYING OUT THE METHOD |
FR2470803A1 (en) * | 1979-12-05 | 1981-06-12 | Nippon Steel Corp | METHOD OF CONTINUOUSLY ANNUCING A LOW CARBON NUT STEEL STRIP |
EP0795616A1 (en) * | 1996-03-13 | 1997-09-17 | STEIN HEURTEY, Société Anonyme: | Process for continuously heat treating metal strip in different atmospheres |
FR2746112A1 (en) * | 1996-03-13 | 1997-09-19 | Stein Heurtey | METHOD OF CONTINUOUS HEAT TREATMENT OF METAL STRIPS IN ATMOSPHERES OF DIFFERENT NATURE |
US5798007A (en) * | 1996-03-13 | 1998-08-25 | Stein Heurtey | Process and apparatus for the continuous heat treatment of a metal strip travelling in a different atmosphere |
US7384489B2 (en) | 2002-09-13 | 2008-06-10 | Drever International S.A. | Atmosphere control during continuous heat treatment of metal strips |
WO2016156125A1 (en) * | 2015-04-02 | 2016-10-06 | Cockerill Maintenance & Ingénierie S.A. | Method and device for reaction control |
RU2705846C2 (en) * | 2015-04-02 | 2019-11-12 | Кокрий Ментенанс Эт Энженьери С.А. | Reaction control method and device |
US10801086B2 (en) | 2015-04-02 | 2020-10-13 | Cockerill Maintenance & Ingenierie S.A. | Method and device for reaction control |
EP3135778A1 (en) * | 2015-08-31 | 2017-03-01 | Cockerill Maintenance & Ingenierie S.A. | Method and device for reaction control |
Also Published As
Publication number | Publication date |
---|---|
BR7708572A (en) | 1978-08-08 |
CA1104910A (en) | 1981-07-14 |
AU3174177A (en) | 1979-06-28 |
AU509460B2 (en) | 1980-05-15 |
JPS5723748B2 (en) | 1982-05-20 |
JPS53102236A (en) | 1978-09-06 |
FR2375334B1 (en) | 1980-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
TP | Transmission of property | ||
ST | Notification of lapse |