AU608010B2 - Apparatus for applying a protective coating of molten metals - Google Patents
Apparatus for applying a protective coating of molten metals Download PDFInfo
- Publication number
- AU608010B2 AU608010B2 AU17477/88A AU1747788A AU608010B2 AU 608010 B2 AU608010 B2 AU 608010B2 AU 17477/88 A AU17477/88 A AU 17477/88A AU 1747788 A AU1747788 A AU 1747788A AU 608010 B2 AU608010 B2 AU 608010B2
- Authority
- AU
- Australia
- Prior art keywords
- bath
- molten metal
- workpiece
- outlet
- inlet
- 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.)
- Ceased
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 79
- 239000002184 metal Substances 0.000 title claims description 79
- 239000011253 protective coating Substances 0.000 title claims description 18
- 150000002739 metals Chemical class 0.000 title claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 230000000717 retained effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005269 aluminizing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 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
- C23C2/003—Apparatus
- C23C2/0035—Means for continuously moving substrate through, into or out of the bath
-
- 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
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
- C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
-
- 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
- C23C2/325—Processes or devices for cleaning the bath
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Description
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1.8I I 2lJllll I 1.25 I1 r i i -9 ~I I_ 6COMMONWEALTH OF ASTRAIA COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 Form COMPLETE SPECIFICATION FOR OFFICE USE Short Title: Int. C1: a 41d 4' qs 0#tc Application Number: Lodged: Complete Specification-Lodged: Accepted: Lapsed: Published: SThis dolutment contains the amendments made under Section 49 and is correctfor printing Priority: 000000 0 00 *s 0 0 00 00 0' o 00 0 *0 4i 0 4! Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: SPETSIALNOE PROEKTNO-KONSTRUKTORSKOE I TEKHNOLOGICHESKOE BJURO
"ENERGOSTALPROEKT"
Ulitsa Pervomaiskaya 23, Dornodedovo, Moskovskaya Oblast, U.S.S.R.
Address of Applicant: Actual Inventor: Address for Service: Genrikh Nikolaevich Strekalov GRIFFITH HASSEL FRAZER 71 YORK STREET SYDNEY NSW 2000
AUSTRALIA
Complete Specification for the invention entitled: APPARATUS FOR APPLYING A PROTECTIVE COATING OF MOLTEN METALS The following statement is a full description of this invention, including the best method of performing it known to me/us:- 5026A:rk TO: THE COMMISSIONER OF PATENTS COMMONWEALTH OF AUSTRALIA 0 5026A:rk
O
0 0 This invention relates to the art of applying a protective coating by hot-dip plating through immersing a workpiece in a molten metal and, more particularly, to an apparatus for applying a protective coating of molten metals to workpieces.
The invention can find the utmost utility during applying protective coating to elongated workpieces intended for power transmission line supports, steelworks in civil engineering, pipes for the chemical production (such as pipes for cracking plants), petroleum extracting and refining industries (such as pipes for transporting oil and gas, casing and compressor pipes), municipal pipes, etc.
There is known an apparatus FR, B, 2,229,782) for continuously applying a protective coating to a workpiece by conveying it horizontally through a bath filled to a preset level with a molten metal.
The apparatus comprises a bath of moltenmetal having openings for thepassage of the workpiece through the molten metal, as well as inlet and outlet conduits.
In order to prevent leaks of the metal from the bath, magnetodynamic locks are provided at the conduits. The openings in the bath are at one level, and the preset level of the molten metal is continuously maintained above these openings. Such an arrangement, however, is not sufficienly reliable, since a cutoff in electric power supply may result in leaks of the molten metal from the baththrough the openins for the passage of the workpieces.
openings for .the passage of the workpieces.
Mbj ct of this application.
(Place and Declared at Mos this day of A 1988 date of f. 19 signing) Signed: :rt Director Position: GRIFFITH HASSEL FRAZER G.P.O. BOX 4164 SYDNEY, AUSTRALIA -2- Another disadvantage is excessive amount of electric power consumed by two magr. todynamic locks used to maintain a continuous level of the molten metal in the bath.
In addition, quality of coatings is affected after extensive use of the bath due to that the molten metal tends to be contaminated by oxides.
There is also known an apparatus SU, A, 1,175,974) for applying a protective coating of molten metals to a workpiece comprising a bath of molten metal havr 10 ing a- cover plate, and inlet and outlet openings for the passage of a workpiece to be coated arranged at one level.
The bath also has inlet and outlet conduits communicating with the bath through corresponding openings provided with electromagnetic locks. The side wall of the bath at the side of the outlet opening accommodates a mechanism for heating and circulating the molten metal.
The apparatus further includes a mechanism for tilting the bath operatively connected thereto, means for air and liquid cooling the workpiece provided at the outlet conduit, means for evacuating oxides and slag from the surface of the molten metal arranged at the cover plate of the bath, and means for feeding a refining gas in the form of perforated tubes imbedded in the bottom of the bath.
For applying coatings the bath is set to a horizontal position. The level of molten metal in the bath is set above the opening wherethrough the workpiece is conveyed, these openings being at one level. The molten metal is retained in the bath by the electromagnetic locks. The temperature of metal is raised to the Curie point, and a shielding flux is fed to the bath. The mechanism Ior heating and fly, 3 -3circulating the metal acts to circulate the metal in the interior of the bath for this metal to flow about the preliminarily heated workpiece conveyed through the bath.
Because the molten metal is retained in the interior of the bath by the electromagnetic locks, a cutoff in electric power supply can result in leakage of the molten metal through the conduits. This makes the apparatus less reliable in operation and entails extra power expenditures necessitated by heating the metal in the conduit. In addi- S 10 tion, this apparatus fails to ensure application of high quality coating to the inner surfaces of hollow workpieces.
This invention aims at providing an apparatus for applying a protective coating of molten metals to a workpiece having such a construction in which thanks to maintaining the level of the molten metal during applying the coating below one of the openings of the bath the operation of the apparatus would be more economical and reliable.
The aims of the invention are attained by that in an t apparatus for applying a protective coating of molten metals to a workpiece comprising a bath of molten metal having a cover plate, and inlet and outlet openings for the passage of the workpiece through the molten metal, inlet and outlet conduits communicating with the bath through the corresponding openings, an electromagnetic lock arranged at one of the conduits, a mechanism for heating and circulating the molten metal arranged at one of side walls of the bath, a mechanism for tilting the bath operatively .connect- ,A ed thereto, means for air and liquid cooling the workpiece LS arranged in the outlet conduit, means for removing oxides Nt 30 and slag from the surface of the molten metal disposed at .4 the cover plate of the bath, and means for feeding a refining gas in the form of a system of perforated tubes accommodated in the bottom of the bath, according to the invention, the apparatus is provided with mechanical gates arranged at the inlet and outlet conduits, whereas during pool? sitioning/the electromagnetic lock at the inlet conduit having a nozzle for discharging the molten metal the outlet opening of the bath is disposed above the inlet opening.
Alternatively, the aims of the invention are attained tt r 10 by that in an apparatus for applying a protective coating of molten metals to a workpiece comprising a bath of molten metal having a cover plate, and inlet and outlet openings o o for the passage of the workpiece through the molten metal, inlet and outlet conduits communicating with the bath S. through the corresponding openings, an electromagnetic lock o 6e arranged at one of the conduits, a mechanism for heating 6 60 and circulating the molten metal arranged ata side wall. of the bath at the side of the outlet opening, a mechanism for tilting the bath operatively connected to the bath, means for air and liquid cooling the workpiece arranged in the outlet conduit, means for removing oxides and slag from the surface of the molten metal disposed at the cover plate of the bath, and-means for feeding a refining gas in the form of a system of perforated tubes accommodated in the bottom of the bath, according to the invention, the apparatus is provided with mechanical gates arranged at the inlet and outlet conduits, whereas during positioningjthe electromag- A( netic lock at the outlet conduit having a nozzle for disi charging the molten metal the inlet opening of the bath is S o disposed above the outlet opening.
I
0 4 I i t Se 6 0 0 o 0 o o 00 0 t The invention allows to reduce the consumption of electric power and makes the apparatus for applying coatings of molten metals more reliable in operation. The invention also affords application of coatings to both sides of workpieces having a closed cross-section.
The invention will now be described in greater detail with reference to various specific embodiments thereof taken in conjunction with the accompanying drawings, in which: 10 Fig. .1 shows one embodiment of an apparatus for applying a protective coating of molten metals, according to the invention; and Fig. 2 is another alternative modification of an apparatus for applying a protective coating of molten metals, according to the invention.
An apparatus for applying a protective coating of molten metals comprises a lined bath 2 (Fig. 1) mounted on a post 1, and filled with a molten metal 3, such as aluminum.
The bath 2 has a cover plate 4 having a hole 5 to charge the bath 2 with metal and be closed by a flap 6. Side walls of the bath 2 have inlet and outlet openings 7 and 8, respectively, for the passage of a workpiece 9 to be coated, the outlet opening 8 overlying-the inlet opening 7. An inlet conduit 10 communicates with the bath 2 through the opening 7, whereas an outlet conduit 11 communicates-with the bath 2 through the opening 8. The inlet and outlet conduits 10 and 11 are provided with mechanical gates 12 and 13, respectively, having the form of slides arranged at the outside of the bath 2. In addition, the inlet conduit has a nozzle 14 for discharging the molten metal, and also an electromagnetic lock 15, whereas the outlet conduit 11 has a means 16 for removing excess metal. The apparatus is provided with a mechanism 17 for heating and circulating the molten metal in the form of a magnetodynamic system arranged at the side of the outlet opening 8. The apparatus further includes a mechanism for tilting the bath fashioned as a toothed quadrant 18 operatively linked with the bath 2, and including gear 19, motor 20, and reducing gear 21.
The cover plate 4 of the bath has a means 22 for remov- S'rt 10 ing oxides and slag from the surface of the molten metal 3 including a nozzle communicating with a suction system (not shown). The outlet conduit 11 accommodates a chamber of an o air cooling system 23 rigidly connected to the bath 2. A a oo liquid cooling system 24 is also provided in the form of a o chamber fixedly secured after the chamber of the system 23.
The bottom of the bath 2 accommodates perforated tubes to feed a refining gas. In order to facilitate the passage of the workpiece 9 through the bath 2, conveyer rollers 26 and 27 are provided at its outer side, whereas an outfeed conveyer 28 controllable by a hydraulic power cylinder 29 is arranged after the chamber 24. The inlet conduit 10 communicates with a passage 30 for feeding a shielding gas.
When using the apparatus for applying a protective coating to the inner and outer surfaces of hollow articles, the electromagnetic lock 15 (Fig. 2) is preferably disposed at the outlet conduit 11, the outlet opening 8 being arranged above the inlet opening 7, whereas the mechanism 17 for heating and circulating the molten metal is preferably positioned at the side of the inlet opening 7. In addition, the nozzle 14 for discharging the molten metal is preferably -7- I I 1 4~ 1 441 9I *0 o 00 0 0 1I I I I Cl provided at the outlet conduit 11 before the means 16 for removing excess metal.
Figs 1 and 2 show the proposed apparatus under operating conditions during which the bath 2 is inclined and the workpiece 9 is passed therethrough. When idling, the bath 2 assumes a horizontal position. The electromagnetic lock and magnetodynamic system of the mechanism 17 for heating and circulating the molten metal are deenergized. The gates 12, 13 block the inlet and outlet openings 7 and 8 of the bath 2.
The apparatus for applying a protective coating of molten metals to a workpiece, according to the invention, operates as follows. Prior to starting, the bath 2 (Fig. 1) is partially filled with molten metal 3, such as aluminum.
The magnetodynamic system of the mechanism 17 and the electric motor 20 of the mechanism for tilting the bath are then energized. The gear 19 and toothed quadrant 18 act to tilt the bath 2 so that the liquid metal fills the passages of the magnetodynamic system of the mechanism 17. Metal ingots are additionally charged into the bath 2 to be melted by the magnetodynamic system. After half of the metal charged into the bath has melted, the bath 2 is returned to the horizontal position. Charging of the metal to the bath 2, melting,and further heating thereof in the bath 2 are continued. The thus molten metal is then brought to a temperature above the Curie point and the level of the molten metal is brought to the inlet opening 7. The electromagnetic lock 15 and motor 20 are then energized to tilt the bath, and the slide gates 12 and 13 are raised. The molten 30 metal is therefore caused to be retained in the bath 2 by i i 9+~ 8the lock 15. A vapour mixture is admitted to the means 16 for removing the excess of metal, and the means 23 and 24 for air and liquid cooling are actuated.
As the bath 2 is tilted to an inclined position, the system of conveyer rollers 26, 27 and the chamber 24 of the liquid cooling system are arranged along one line at an angleo 4 the surface of the molten metal 3. The workpiece 9 preliminarily heated to 450 780 oC is conveyed by the roller 26 through the inlet conduit 10 to the bath 2, where a coating of the molten metal is applied thereto. In order to protect the surface of the workpiece 9, a shielding gas 0, is admitted through the passage 30. As the workpiece 9 is conveyed through the molten metal 3, a refining gas, such as nitrogen, is admitted to the bath 2 through the perforated tubes 25 to entrain particles of aluminum oxide formed during engagement of the metal of the workpiece 9 with the molten metal 3 to the molten metal surface. At the same time, the means 22 is actuated which acts to periodically evacuate oxides and slag from the surface of the molten metal 3.
The workpiece 9 is then conveyed through the outlet opening 8, where excess metal is removed therefrom by a flow of vapour mixture fed by the means 16. The workpiece 9 then enters the chamber of the air cooling means 23. The workpiece 9 is eventually cooled in the chamber of the means 24 conveyed thereto by the roller 27. The workpiece 9 is further moved by the conveyer 28 for further treatment, after which a successive workpiece 9 is fed to the bath 2.
When applying a coating both to the outside and inside surfaces of the workpiece 9, the level of the molten metal
I
-9 t 4 0009@ 3 blocks the outlet opening 8 disposed here below the inlet opening 7. In this case the electromagnetic lock 15 is positioned at the outlet conduit 11 for retaining the molten metal 3 in the interior of the bath 2. As the workpiece 9, such as a pipe, is conveyed to the bath 2 in the downwards direction, the molten metal tends to flow to the interior of the pipe to adhere to its inside surface.
The use of the herein proposed technical solution allows to sharply reduce the amount of electric power consumed for retang.the1 melt in the bath 2.
The proposed apparatus ensures that the process of applying a protective coating can be automatically controlled under various operating conditions.
The apparatus can be easily brought from idling to coating application operation to result in less time expenditures between operations.
The use of a single electromagnetic lock 15 improves safety in operation and makes the apparatus easy to service.
The present invention allows aluminizing both inner and outer surfaces of pipes.
0 4 4 0 *t 4,
C
CC
Claims (2)
- 2. An apparatus for applying a protective coating 8 of molten metals to a workpiece comprising a bath of 0 molten metal having a cover plate, and inlet and outlet openings for the passage of the workpiece through the 0060 o° molten metal, inlet and outlet conduits communicating with '1 0 the bath through the corresponding openings, an electromagnetic lock arranged at one of the conduits, a mechanism for heating and circulating the molten metal arranged at one of the side walls of the bath, a mechanism for tilting the bath operatively connected to the bath, means for air and liquid cooling the workpiece arranged in the outlet conduit, means for removing oxides and slag 4 R from the surface of molten metal disposed at the cover IS 0984s/EM ~r0r r-:M ;gif 11 plate of the bath, and means for feeding a refining gas in the form of a system of perforated tubes accommodated in the bottom of the bath, wherein it is provided with mechanical gates arranged at the inlet and outlet conduits, whereas during positioning of the electromagnetic lock at the outlet conduit having a nozzle for discharging the molten metal the inlet opening is disposed above the outlet opening. 0 0 o isa 00 oo 0 o 0 0 o
- 3. An apparatus for applying a protective coating of molten metals to a workpiece substantially as herein described with reference to Figure 1 or Figure 2 of the accompanying drawings. DATED this 19th day of November 1990 SPETSIALNOE PROEKTNO-KNOSTRUKTORSKOE I TEKHNOLOGICHESKOE BJURO "ENERGOSTALPROEKT" By their Patent Attorneys GRIFFITH HACK CO. oooo 000 0 0 4 S d ott( 0 t t t q o 0984s/EM
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3821485A DE3821485A1 (en) | 1988-06-25 | 1988-06-25 | Installation for applying a protective coating of molten metal onto workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1747788A AU1747788A (en) | 1990-04-26 |
| AU608010B2 true AU608010B2 (en) | 1991-03-21 |
Family
ID=6357240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU17477/88A Ceased AU608010B2 (en) | 1988-06-25 | 1988-06-08 | Apparatus for applying a protective coating of molten metals |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU608010B2 (en) |
| DE (1) | DE3821485A1 (en) |
| FI (1) | FI882657A (en) |
| FR (1) | FR2632975B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4208578A1 (en) * | 1992-03-13 | 1993-09-16 | Mannesmann Ag | METHOD FOR COATING THE SURFACE OF STRAND-SHAPED GOODS |
| DE4319569C1 (en) * | 1993-06-08 | 1994-06-16 | Mannesmann Ag | Method and appts. for prodn. of a semi-finished prod. - with smooth-rolling of the deposited metal ensures a small thickness tolerance |
| US6037011A (en) * | 1997-11-04 | 2000-03-14 | Inland Steel Company | Hot dip coating employing a plug of chilled coating metal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2229782A1 (en) * | 1973-05-15 | 1974-12-13 | Nippon Kokan Kk | Continuous hot dip metal coating of strip or wire - by feeding metal bath and applying an electromagnetic force |
| SU1157125A1 (en) * | 1983-12-29 | 1985-05-23 | Специальное конструкторское бюро магнитной гидродинамики Института физики АН ЛатвССР | Device for depositing metal on articles |
| SU1211335A1 (en) * | 1984-07-31 | 1986-02-15 | Специальное конструкторское бюро магнитной гидродинамики Института физики АН ЛатвССР | Device for deposition of metal coating on shaped rigid articles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1481313A (en) * | 1966-05-14 | 1967-05-19 | Ts B Konstrukcji Kablowych | Method of tinning wire, especially fine copper wire and installations for the application of this method |
| FR2539761A1 (en) * | 1983-01-26 | 1984-07-27 | Sp P Konstruktor | Installation for depositing a protective coating on rolled sections by a hot method |
-
1988
- 1988-06-06 FI FI882657A patent/FI882657A/en not_active Application Discontinuation
- 1988-06-08 AU AU17477/88A patent/AU608010B2/en not_active Ceased
- 1988-06-17 FR FR888808184A patent/FR2632975B1/en not_active Expired - Fee Related
- 1988-06-25 DE DE3821485A patent/DE3821485A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2229782A1 (en) * | 1973-05-15 | 1974-12-13 | Nippon Kokan Kk | Continuous hot dip metal coating of strip or wire - by feeding metal bath and applying an electromagnetic force |
| SU1157125A1 (en) * | 1983-12-29 | 1985-05-23 | Специальное конструкторское бюро магнитной гидродинамики Института физики АН ЛатвССР | Device for depositing metal on articles |
| SU1211335A1 (en) * | 1984-07-31 | 1986-02-15 | Специальное конструкторское бюро магнитной гидродинамики Института физики АН ЛатвССР | Device for deposition of metal coating on shaped rigid articles |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2632975A1 (en) | 1989-12-22 |
| AU1747788A (en) | 1990-04-26 |
| FI882657A (en) | 1989-12-07 |
| FI882657A0 (en) | 1988-06-06 |
| DE3821485A1 (en) | 1989-12-28 |
| FR2632975B1 (en) | 1990-11-16 |
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