EP0608192B1 - Procédé pour l'épuration d'un bain de revêtement de produits métallurgiques par un alliage métallique, et installation pour la mise en oeuvre de ce procédé - Google Patents
Procédé pour l'épuration d'un bain de revêtement de produits métallurgiques par un alliage métallique, et installation pour la mise en oeuvre de ce procédé Download PDFInfo
- Publication number
- EP0608192B1 EP0608192B1 EP94470001A EP94470001A EP0608192B1 EP 0608192 B1 EP0608192 B1 EP 0608192B1 EP 94470001 A EP94470001 A EP 94470001A EP 94470001 A EP94470001 A EP 94470001A EP 0608192 B1 EP0608192 B1 EP 0608192B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bath
- alloy
- installation according
- compartments
- transducer
- 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.)
- Expired - Lifetime
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910001092 metal group alloy Inorganic materials 0.000 title claims abstract description 7
- 238000004140 cleaning Methods 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 41
- 239000000956 alloy Substances 0.000 claims abstract description 41
- 238000009434 installation Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract 2
- 239000000047 product Substances 0.000 description 15
- 238000005246 galvanizing Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 11
- 229910001297 Zn alloy Inorganic materials 0.000 description 5
- 238000010908 decantation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 229910018137 Al-Zn Inorganic materials 0.000 description 2
- 229910018573 Al—Zn Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- C23C2/32—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor using vibratory energy applied to the bath or substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/04—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material
- B05C3/05—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material by applying vibrations thereto
Definitions
- the invention relates to the field of coating metallurgical products by a metal alloy, in particular galvanizing steel products by dipping them products in a bath containing this alloy in the liquid state.
- Galvanizing metallurgical products such as steel strips, is carried out by making these fixed or scrolling products in a metal bath in zinc-based fusion which may also contain variable amounts (up to a few%) of aluminum.
- these baths quickly become supersaturated with iron, and Fe-Zn or Fe-Al-Zn intermetallic compounds precipitate. These precipitates are called “mattes” and settle either towards the bath surface (from where they are periodically removed manually), either towards the bottom of the galvanizing tank, according to their relative density compared to that of the bath zinc alloy. This density is governed by their composition; the Fe-Al-Zn mattes settle towards the surface, the Fe-Zn mattes towards the bottom.
- the bath therefore contains permanently a relatively large quantity of mattes. The consequence is that the mattes are deposited at the same time that the zinc alloy on the product to be coated, and cause often the appearance of serious surface appearance defects in the coating.
- the object of the invention is to propose a method to accelerate the elimination of solid impurities at the within liquid alloy baths, so as to obtain consistently good quality for coatings by soaking metallurgical products.
- the invention relates to a method of coating of a metallurgical product, in particular steel, according to which said product is soaked in an alloy bath metallic containing solid impurities, and we realize an acceleration of the settling of said impurities, characterized in that said acceleration is obtained by a insonation of said alloy bath.
- the invention also relates to an installation for coating of metallurgical products, especially steel, type comprising a tank containing an alloy bath metallic, means for dipping said products in said alloy bath, and means for accelerating the decantation of the solid impurities contained by said bath, characterized in that said means for accelerating the settling of impurities are means of insonation of said alloy bath.
- said tank comprises at least one partition dividing it into at least two compartments each containing either said means for soaking said metallurgical products in said bath of alloy, or said means of insonating said bath alloy, and the installation also includes means to connect said compartments.
- the invention consists in inject into the tank containing the liquid metal alloy sound or ultrasonic waves which have the effect to accentuate the settling of impurities. It is particularly advised to carry out this insonation in a bin area separated by a partition from the area where it takes place the coating and to carry out a continuous exchange of alloy liquid between the two compartments thus defined.
- Document JP-A-2-55648 proposed to inject waves ultrasonic in a continuous casting distributor of steel, to accelerate the settling of non-metallic inclusions liquids by a phenomenon of coalescence of these inclusions. But this phenomenon is quite distinct from that put at stake by the invention, in which the inclusions to eliminate are in the solid state.
- the inventors have found that the insonation of the baths of zinc alloy of the type of those used for the galvanization very significantly accelerates the settling of mattes.
- This insonation was carried out for 30 minutes by means of a vibrating blade connected to a 25 kHz frequency ultrasonic transmitter and diving into a liquid alloy Zn-Fe-Al at 450 ° C. Once soaked, these crucibles and the alloy they contained were cut into the height direction, and we measured the thickness of the mattes which had accumulated in the upper part of the crucible during the experiment.
- FIG. 1 shows schematically an installation of galvanizing a steel strip in movement, modified according to the invention.
- a tray 1 of a length and width of the order of a few meters, containing a bath 2 of zinc alloy, 2 m deep approximately and maintained in the liquid state at a temperature of in the range of 400-500 ° C.
- the moving steel strip 3 enters the alloy 2 bath while being protected from the air ambient by a bell 4 whose upstream end is connected to the above heat treatment plant the galvanizing installation, and whose downstream end plunges into the alloy bath 2.
- the strip 3 On its course in the bath 2, the strip 3 is wound against a drum 5 in rotation around its axis 6, and immersed in the bath 2.
- the tray 1 is divided into two compartments 7 and 8 by a partition 9.
- Compartment 7 contains the organs which have just been described and constitutes the the actual galvanizing compartment, while the compartment 8 is the one where the decanting of the mattes by the process which is the subject of the invention.
- a permanent circulation of the zinc alloy is established liquid 2 between these two compartments 7 and 8 by means of a or of several openings 10 made in the partition 9, and by means of a pipe 11 provided with a pump 12 which returns in the settling compartment 8 the alloy taken from the galvanizing compartment 7 (the reverse course is also acceptable).
- the accelerated settling of mattes in the compartment decantation 8 by means of a pavilion 13 of circular shape and of the order of 0.40 to 1 m in diameter, connected to a transducer 14, such as an electrodynamic exciter, piezoelectric or magnetostrictive.
- the frequency N is chosen from so as to bring the pavilion 13 into resonance, and the distance "h" separating the pavilion 13 from the bottom of the tank 1 is chosen equal to a whole number of half-wavelengths ⁇ vibrations of the pavilion 13, in order to increase the yield vibration of the installation.
- the electrical power of transducer 14 can be of the order of 0.3 to 10 kW. Instead of use a single large transducer-horn assembly dimensions, you can also choose to use several of smaller dimensions, if one thus thinks of obtaining a more homogeneous vibration of the whole bath alloy 2. Under the effect of these vibrations, which in principle do not allow to reach the bath cavitation threshold alloy 2, there is an accelerated decantation of mattes. Density of lower density than bath 2 rise to the surface in compartment 8 and form there a surface layer 15 enriched with mattes while the higher density mattes than bath 2 form a layer 16 in the bottom of tank 1.
- the transducer 14 can also be replaced by a ultrasonic transmitter. Under these conditions, it is possible to create cavitation phenomena in the alloy bath 2, provided that its dimensions are reduced (of the order of a few tens of cm), or multiply the number transmitters so that the entire bath 2 is concerned with cavitation and not just the areas closer to Pavilion 13. Similarly, transmitters ultrasonic can be kept out of the alloy bath 2 and applied to the outside of the walls of tank 1, which avoids providing means to protect them from attack by the alloy bath 2. In return, there is the risk that, in the general case, the vibratory efficiency of transmitters is insufficient to obtain cavitation in bath 2. We can therefore only consider it for very small installations, which would be example suitable for coating small isolated parts.
- Figure 3 shows a possible variation of the installation according to the invention shown in Figure 1.
- the elements common to both installations are designated by the same benchmarks.
- line 11 and pump 12 bring the alloy bath of the settling compartment 8 to galvanizing compartment 7.
- the return of the alloy in the settling compartment is carried out by a threshold of overflow 18 formed above the partition 9, the height is slightly less than the nominal depth of the bath 2.
- compartments can multiply the number of compartments, and provide for example a plurality of settling compartments adjacent to one compartment single galvanization, or a plurality of compartments galvanization powered by a single compartment of decantation, or any combination of these possibilities.
- the invention can be applied not only at galvanizing installations at the parade of steel strips but at all coating facilities by soaking metallurgical products, while scrolling or immobile, by a metallic alloy initially in the state liquid and likely to contain solid impurities that we want to eliminate.
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)
- Physical Vapour Deposition (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
- la figure 1 qui représente schématiquement une installation de galvanisation de bandes d'acier en défilement équipée d'un dispositif d'insonation du bain d'alliage pour la mise en oeuvre de l'invention ;
- la figure 2 qui représente une variante du dispositif d'insonation ;
- la figure 3 qui représente une variante de l'installation de la figure 1.
Claims (15)
- Procédé de revêtement d'un produit métallurgique, notamment en acier, selon lequel on trempe ledit produit dans un bain d'alliage, métallique renfermant des impuretés solides, et on réalise une accélération de la décantation desdites impuretés, caractérisé en ce que ladite accélération est obtenue par une insonation dudit bain d'alliage.
- Procédé selon la revendication 1, caractérisé en ce que ladite insonation est réalisée de manière à créer des phénomènes de cavitation à l'intérieur dudit bain d'alliage.
- Installation de revêtement de produits métallurgiques (3), notamment en acier, du type comprenant un bac (1) renfermant un bain (2) d'alliage métallique, des moyens (4,5) pour tremper lesdits produits dans ledit bain d'alliage (2), et des moyens pour accélérer la décantation des impuretés solides renfermées par ledit bain (2), caractérisée en ce que lesdits moyens pour accélérer la décantation des impuretés sont des moyens d'insonation dudit bain d'alliage (2).
- Installation selon la revendication 3, caractérisée en ce que lesdits moyens d'insonation sont constitués par au moins un pavillon circulaire (13) trempant dans ledit bain (2) et relié à un transducteur (14) lui imposant des vibrations.
- Installation selon la revendication 4, caractérisée en ce que ledit pavillon (13) est maintenu à une distance ("h") du fond dudit bas (1) égale à un nombre entier de demi-longueurs d'onde desdites vibrations.
- Installation selon la revendication 3, caractérisée en ce que lesdits moyens d'insonation sont constitués par au moins une pièce (17) de forme tétraédrique trempant dans ledit bain (2) et reliée à un transducteur (14) lui imposant des vibrations.
- Installation selon l'une des revendications 4 à 6, caractérisée en ce que ledit transducteur (14) est un excitateur électromagnétique et en ce que lesdites vibrations ont une fréquence comprise entre 100 et 20 000 Hz.
- Installation selon l'une des revendications 4 à 6, caractérisée en ce que ledit transducteur (14) est un excitateur magnétostrictif et en ce que lesdites vibrations ont une fréquence comprise entre 100 et 20 000 Hz.
- Installation selon l'une des revendications 4 à 6, caractérisée en ce que ledit transducteur (14) est un excitateur piézoélectrique et en ce que lesdites vibrations ont une fréquence comprise entre 100 et 20 000 Hz.
- Installation selon l'une des revendications 4 à 6, caractérisée en ce que ledit transducteur (14) est un excitateur ultrasonore.
- Installation selon la revendication 3, caractérisée en ce que lesdits moyens d'insonation dudit bain (2) d'alliage sont constitués par au moins un excitateur ultrasonore appliqué contre une paroi dudit bac (1).
- Installation selon l'une des revendications 3 à 11, caractérisée en ce que ledit bac (1) comprend au moins une cloison (9) le séparant en au moins deux compartiments (7,8) renfermant chacun soit lesdits moyens (4,5) pour tremper lesdits produits métallurgiques (3) dans ledit bain (2) d'alliage, soit lesdits moyens d'insonation dudit bain (2) d'alliage, et en ce qu'elle comprend également des moyens pour mettre en communication lesdits compartiments (7,8).
- Installation selon la revendication 12, caractérisée en ce que lesdits moyens pour mettre en communication lesdits compartiments (7,8) comprennent au moins une conduite (11) pourvue d'une pompe (12) prélevant l'alliage dans l'un desdits compartiments (7,8) et le transférant dans l'autre.
- Installation selon la revendication 12 ou 13, caractérisée en ce que lesdits moyens pour mettre en communication lesdits compartiments (7,8) comprennent au moins une ouverture (10) ménagée dans ladite cloison (9).
- Installation selon la revendication 12 ou 13, caractérisée en ce que lesdits moyens pour mettre en communication lesdits compartiments (7,8) comprennent un seuil de débordement (18) ménagé au-dessus de ladite cloison (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9300761A FR2700779B1 (fr) | 1993-01-22 | 1993-01-22 | Procédé pour l'épuration d'un bain de revêtement de produits métallurgiques par un alliage métallique, et installation pour la mise en Óoeuvrer de ce procédé. |
| FR9300761 | 1993-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0608192A1 EP0608192A1 (fr) | 1994-07-27 |
| EP0608192B1 true EP0608192B1 (fr) | 1998-07-01 |
Family
ID=9443374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94470001A Expired - Lifetime EP0608192B1 (fr) | 1993-01-22 | 1994-01-18 | Procédé pour l'épuration d'un bain de revêtement de produits métallurgiques par un alliage métallique, et installation pour la mise en oeuvre de ce procédé |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5558715A (fr) |
| EP (1) | EP0608192B1 (fr) |
| JP (1) | JPH07305156A (fr) |
| KR (1) | KR100295783B1 (fr) |
| AT (1) | ATE167900T1 (fr) |
| DE (1) | DE69411289T2 (fr) |
| ES (1) | ES2118350T3 (fr) |
| FR (1) | FR2700779B1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011001236A1 (de) * | 2011-03-11 | 2012-09-13 | Seho Systemtechnik Gmbh | Verfahren und Vorrichtung zum Verzinnen von Werkstücken |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3098966B2 (ja) * | 1995-12-12 | 2000-10-16 | 日本ペイント株式会社 | 金属成型物のリン酸塩皮膜化成処理方法 |
| US5961285A (en) * | 1996-06-19 | 1999-10-05 | Ak Steel Corporation | Method and apparatus for removing bottom dross from molten zinc during galvannealing or galvanizing |
| US6582520B1 (en) | 1997-12-09 | 2003-06-24 | Ak Steel Corporation | Dross collecting zinc pot |
| EP1070765A4 (fr) * | 1998-04-01 | 2008-10-08 | Jfe Steel Corp | Procede de zingage par immersion a chaud et dispositif afferent |
| KR20030054488A (ko) * | 2001-12-26 | 2003-07-02 | 주식회사 포스코 | 용융아연 도금욕조의 구조물 드로스부착 억제방법 |
| US20060208559A1 (en) * | 2005-03-17 | 2006-09-21 | Morris Bruce E | Wheel ornament assembly as constantly vertical for rotationally independant wheel spinner |
| DE102007050131A1 (de) | 2007-10-19 | 2009-04-23 | Sms Demag Ag | Verfahren und Vorrichtung zum Schmelztauchbeschichten eines Metallbandes |
| DE102008007570A1 (de) | 2007-11-07 | 2009-05-20 | Stangl Semiconductor Equipment Ag | Vorrichtung und Verfahren zur Beschichtung einer Oberfläche |
| ES2529697T3 (es) * | 2008-02-08 | 2015-02-24 | Siemens Vai Metals Technologies Sas | Procedimiento de galvanización por inmersión de una banda de acero |
| CN103080361B (zh) * | 2010-09-02 | 2015-09-16 | 新日铁住金株式会社 | 熔融镀锌钢板制造装置及熔融镀锌钢板制造方法 |
| KR20230004000A (ko) * | 2021-06-30 | 2023-01-06 | 주식회사 엘지에너지솔루션 | 코팅층 두께 조절이 용이한 코팅장치 및 코팅방법 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR964691A (fr) * | 1947-05-13 | 1950-08-22 | ||
| US3084650A (en) * | 1960-07-27 | 1963-04-09 | Curtiss Wright Corp | Ultrasonic soldering system |
| US3277566A (en) * | 1963-03-19 | 1966-10-11 | Western Electric Co | Methods of and apparatus for metalcoating articles |
| US3430332A (en) * | 1966-04-01 | 1969-03-04 | Electrovert Mfg Co Ltd | Production line soldering with application of ultrasonic energy directing to molten solder |
| US3689049A (en) * | 1969-04-04 | 1972-09-05 | Ajax Newark Inc The | Method and apparatus for separating metal from dross |
| US3752381A (en) * | 1972-03-17 | 1973-08-14 | Branson Instr | Ultrasonic soldering apparatus |
| US3833163A (en) * | 1973-03-08 | 1974-09-03 | Branson Instr | Ultrasonic apparatus |
| JPS51138561A (en) * | 1975-05-27 | 1976-11-30 | Asahi Glass Co Ltd | Soldering method of oxidized metal surface |
| DE2715048C2 (de) * | 1977-04-04 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | Vorrichtung zum flußmittelfreien Verzinnen mittels Ultraschall |
| JPS5591967A (en) * | 1978-12-30 | 1980-07-11 | Nippon Steel Corp | One-side hot dipping method for steel strip |
| JPS55128569A (en) * | 1979-03-26 | 1980-10-04 | Nippon Kokan Kk <Nkk> | Method and apparatus for hot galvanization |
| JPS59145772A (ja) * | 1983-02-08 | 1984-08-21 | Sumitomo Electric Ind Ltd | 連続溶融めつき方法 |
| US4541358A (en) * | 1983-11-28 | 1985-09-17 | The Htc Corporation | Method and apparatus for solder removal |
| WO1988000036A1 (fr) * | 1986-06-30 | 1988-01-14 | Nuova Cierre S.R.L. | Dispositif d'irrigation mobile |
| JPS6393850A (ja) * | 1986-10-08 | 1988-04-25 | Nippon Steel Corp | 溶融亜鉛メツキ浴中の介在物除去方法 |
| DE3703108A1 (de) * | 1987-02-03 | 1988-08-11 | Junker Gmbh O | Verfahren zum betreiben eines heissmetallisierungsofens |
| JPH0255648A (ja) * | 1988-08-22 | 1990-02-26 | Kawasaki Steel Corp | 溶鋼中の非金属介在物の除去方法 |
| JPH02282456A (ja) * | 1989-04-21 | 1990-11-20 | Nisshin Steel Co Ltd | 金属帯の超音波照射連続溶融めっき法 |
| US5044542A (en) * | 1989-11-22 | 1991-09-03 | Electrovert Ltd. | Shield gas wave soldering |
-
1993
- 1993-01-22 FR FR9300761A patent/FR2700779B1/fr not_active Expired - Fee Related
-
1994
- 1994-01-14 US US08/181,553 patent/US5558715A/en not_active Expired - Fee Related
- 1994-01-18 ES ES94470001T patent/ES2118350T3/es not_active Expired - Lifetime
- 1994-01-18 AT AT94470001T patent/ATE167900T1/de not_active IP Right Cessation
- 1994-01-18 EP EP94470001A patent/EP0608192B1/fr not_active Expired - Lifetime
- 1994-01-18 DE DE69411289T patent/DE69411289T2/de not_active Expired - Fee Related
- 1994-01-21 KR KR1019940001119A patent/KR100295783B1/ko not_active Expired - Fee Related
- 1994-01-24 JP JP6023361A patent/JPH07305156A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011001236A1 (de) * | 2011-03-11 | 2012-09-13 | Seho Systemtechnik Gmbh | Verfahren und Vorrichtung zum Verzinnen von Werkstücken |
| DE102011001236B4 (de) * | 2011-03-11 | 2015-07-02 | Seho Systemtechnik Gmbh | Verfahren und Vorrichtung zum Verzinnen von Werkstücken |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69411289T2 (de) | 1999-03-04 |
| FR2700779B1 (fr) | 1995-03-10 |
| DE69411289D1 (de) | 1998-08-06 |
| KR100295783B1 (ko) | 2001-10-24 |
| ATE167900T1 (de) | 1998-07-15 |
| FR2700779A1 (fr) | 1994-07-29 |
| EP0608192A1 (fr) | 1994-07-27 |
| ES2118350T3 (es) | 1998-09-16 |
| KR940018474A (ko) | 1994-08-18 |
| US5558715A (en) | 1996-09-24 |
| JPH07305156A (ja) | 1995-11-21 |
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