BE882256A - GALVANIZATION PROCESS - Google Patents
GALVANIZATION PROCESS Download PDFInfo
- Publication number
- BE882256A BE882256A BE6/47109A BE6047109A BE882256A BE 882256 A BE882256 A BE 882256A BE 6/47109 A BE6/47109 A BE 6/47109A BE 6047109 A BE6047109 A BE 6047109A BE 882256 A BE882256 A BE 882256A
- Authority
- BE
- Belgium
- Prior art keywords
- weight
- emi
- bath
- galvanizing bath
- less
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000005246 galvanizing Methods 0.000 claims description 24
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052684 Cerium Inorganic materials 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 239000010955 niobium Substances 0.000 claims 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000007740 vapor deposition 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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
Procédé de galvanisation.
La présente invention est relative à un procédé de galvanisation d'objets métalliques.
Il est connu depuis fort longtemps de protéger les surfaces métalliques par des revêtements à base de zinc ou d'alliages de zinc.
La technique classique de galvanisation consiste à plonger l'objet métallique à galvaniser dans un bain de zinc ou d'alliages de zinc/ et.ce après un certain nombre de traitements préliminaires (décapage, rinçage, fluxage,...) de manière à conférer aux surfaces à traiter les propriétés qui assureront un revêtement galvanisé de bonne qualité.
Le bain de galvanisation classique contient de
<EMI ID=1.1>
commerciale correspondant aux normes AFNOR NFA 55101 d'avril 1955, classes Z6 et Z7.
C'est ainsi qu'un zinc Z7 comporte 0,15 % de Cd,
<EMI ID=2.1>
<EMI ID=3.1>
précédée d'opérations de dégraissage, de décapage par immersion dans de l'acide chlorhydrique contenant un inhibiteur de corrosion, et d'un fluxage ou dépôt d'une couche d'un flux du genre chlcrura de zinc et d'ammonium..
Le revêtement de zinc est . considéré comme correct si l'aspect est. lisse, relativement brillant, évidemment adhérent, et si l'épaisseur se situe aux environs de 70 à 100 microns.
Toutefois, il s'est avéré que la galvanisation au trempé classique, telle que décrite ci-dessus, donnait de mauvais
<EMI ID=4.1>
le cas de beaucoup d'aciers de construction.
Les revêtements de zinc apparaissent grisés, indice de la formation de composés intermétalliques fragiles, d'une épaisseur anormale (200 à 300 microns et plus) et d'adhérence médiocre tant en raison de l'épaisseur des revêtements que de leur fragilité.
Les solutions proposées aux problèmes relatifs
<EMI ID=5.1>
<EMI ID=6.1>
addition d'un certain nombre d'éléments au bain de galvanisation.
Le procédé de l'invention met en oeuvre un bain de galvanisation qui permet d'obtenir dès revêtements galvanisés ne présentant pas les graves défauts mentionnés ci-dessus, lors de son utilisation dans la galvanisation des aciers contenant du silicium.
Le procédé est basé sur des études de l'influence de certains sélectionnés et ajoutés en proportions adéquates au bain de galvanisation.
<EMI ID=7.1>
tant un bain de galvanisation qui contient au minimum 70 % en poids de zinc, est caractérisé en ce .que l'on ajoute au bain de galvanisation; un ou plusieurs des éléments suivants : chrome, nickel,
<EMI ID=8.1>
rium, molybdène, cobalt, antimoine, calcium, lithium, sodium, potassium, et ce en quantité telle que la teneur du bain lors de son utilisation, en chaque élément pris isolément, soit inférieure à
2 % en poids.
<EMI ID=9.1>
vention consiste à limiter la teneur en plomb du bain de galvanisation précité à 2 %-en poids au maximum.
Une autre modalité de réalisation du procédé consiste à limiter la teneur en aluminium du bain de galvanisation à 2,5 % en poids au maximum.
Une troisième modalité de réalisation du procédé de l'invention prévoit la présence de 2,5 % en poids au maximum de magnésium dans le bain de galvanisation.
Une quatrième modalité de réalisation du procédé
<EMI ID=10.1>
étain dans le bain de galvanisation.
Une modalité de réalisation préférentielle du procédé de l'invention comporte un bain de galvanisation qui con-
<EMI ID=11.1>
<EMI ID=12.1>
<EMI ID=13.1>
<EMI ID=14.1>
sieurs des éléments suivants : chrome, nickel, .bore, titane;
<EMI ID=15.1>
cobalt, antimoine, calcium, lithium, sodium, potassium et ce en quantité telle que la teneur du bain lors de son utilisation, en chaque élément pria isolément, soit inférieure à 1 96 en poids.
<EMI ID=16.1>
tiellement ajoutés sous fozme d'alliages, toutefois il n'est pas exclu de les inclure dans le bain à l'état pur.
La description ci-dessus a pour domaine préféren-
<EMI ID=17.1>
il est évident que La composition du bain de galvanisation peut aussi être utilisée dans d'autres procédés tels que la galvanisation en continu, p-ar projection au pistolet, par dépôt en phase vapeur, par dépôt -électrolytique, etc..
REVENDICATIONS
1. Procédé de galvanisation, comportant un bain de galvanisation qui contient au minimum 70 % en poids de zinc, caractérisé en ce que l'on ajoute au bain de galvanisation précité, un ou plusieurs des éléments suivants : chrome, nickel, bore,
<EMI ID=18.1>
molybdène, cobalt, antimoine, calcium, lithium, sodium, potassium, et ce, en quantité telle que la teneur du bain lors. de son utilisation, en chaque élément pris isolément, soit inférieure à 2 % en poids.
<EMI ID=19.1>
en ce que la teneur en plomb du bain de galvanisation est au plus, égale à 2 % en poids.
3. Procédé suivant les revendications 1 ou 2. caractérisé en ce que la teneur en aluminium du bain de galvanisation, est inférieure à 2,5 % en poids.
4. Procédé suivant les revendications 1 ou 2 et/ou 3, caractérisé en ce que la teneur en magnésium du bain
de galvanisation est inférieure à 2,5 % en poids.
5. Procédé suivant les revendications 1 ou 2 et/ou 3 et/ou 4, caractérisé en ce que la teneur en ét.ain du bain de galvanisation est inférieure à 3 % en poids.
Galvanization process.
The present invention relates to a method of galvanizing metallic objects.
It has long been known to protect metal surfaces with coatings based on zinc or zinc alloys.
The classic galvanizing technique consists in immersing the metal object to be galvanized in a bath of zinc or zinc alloys and after this a certain number of preliminary treatments (pickling, rinsing, fluxing, ...) so as to give the surfaces to be treated the properties which will ensure a good quality galvanized coating.
The classic galvanizing bath contains
<EMI ID = 1.1>
commercial corresponding to AFNOR NFA 55101 standards of April 1955, classes Z6 and Z7.
This is how a zinc Z7 contains 0.15% of Cd,
<EMI ID = 2.1>
<EMI ID = 3.1>
preceded by degreasing operations, pickling by immersion in hydrochloric acid containing a corrosion inhibitor, and by fluxing or depositing a layer of a flux of the genus chlcrura of zinc and ammonium.
The zinc coating is. considered correct if the appearance is. smooth, relatively shiny, obviously adherent, and if the thickness is around 70 to 100 microns.
However, it has been found that conventional dip galvanizing, as described above, gives poor results.
<EMI ID = 4.1>
the case of many structural steels.
Zinc coatings appear gray, an indication of the formation of fragile intermetallic compounds, of an abnormal thickness (200 to 300 microns and more) and of poor adhesion both because of the thickness of the coatings and their brittleness.
Suggested solutions to related problems
<EMI ID = 5.1>
<EMI ID = 6.1>
addition of a number of elements to the galvanizing bath.
The method of the invention uses a galvanizing bath which makes it possible to obtain galvanized coatings which do not have the serious defects mentioned above, when it is used in the galvanization of steels containing silicon.
The process is based on studies of the influence of some selected and added in adequate proportions to the galvanizing bath.
<EMI ID = 7.1>
both a galvanizing bath which contains at least 70% by weight of zinc, is characterized in that it is added to the galvanizing bath; one or more of the following: chrome, nickel,
<EMI ID = 8.1>
rium, molybdenum, cobalt, antimony, calcium, lithium, sodium, potassium, and in an amount such that the content of the bath during its use, in each element taken in isolation, is less than
2% by weight.
<EMI ID = 9.1>
vention consists in limiting the lead content of the above-mentioned galvanizing bath to 2% - by weight at most.
Another embodiment of the process consists in limiting the aluminum content of the galvanizing bath to 2.5% by weight at most.
A third embodiment of the process of the invention provides for the presence of 2.5% by weight at most of magnesium in the galvanizing bath.
A fourth method of carrying out the process
<EMI ID = 10.1>
tin in the galvanizing bath.
A preferred embodiment of the method of the invention comprises a galvanizing bath which
<EMI ID = 11.1>
<EMI ID = 12.1>
<EMI ID = 13.1>
<EMI ID = 14.1>
of the following: chromium, nickel, boron, titanium;
<EMI ID = 15.1>
cobalt, antimony, calcium, lithium, sodium, potassium and this in an amount such that the content of the bath during its use, in each element prayed in isolation, is less than 1,96 by weight.
<EMI ID = 16.1>
tially added in the form of alloys, however it is not excluded to include them in the bath in the pure state.
The above description is for preferred area
<EMI ID = 17.1>
It is obvious that the composition of the galvanizing bath can also be used in other processes such as continuous galvanizing, by spraying with a spray gun, by vapor deposition, by electrolytic deposition, etc.
CLAIMS
1. Galvanizing process, comprising a galvanizing bath which contains at least 70% by weight of zinc, characterized in that one or more of the following elements are added to the above-mentioned galvanizing bath: chromium, nickel, boron,
<EMI ID = 18.1>
molybdenum, cobalt, antimony, calcium, lithium, sodium, potassium, and this in an amount such as the content of the bath. of its use, in each element taken alone, is less than 2% by weight.
<EMI ID = 19.1>
in that the lead content of the galvanizing bath is at most equal to 2% by weight.
3. Method according to claims 1 or 2. characterized in that the aluminum content of the galvanizing bath is less than 2.5% by weight.
4. Method according to claims 1 or 2 and / or 3, characterized in that the magnesium content of the bath
galvanization is less than 2.5% by weight.
5. Method according to claims 1 or 2 and / or 3 and / or 4, characterized in that the tin content of the galvanizing bath is less than 3% by weight.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU81061A LU81061A1 (en) | 1979-03-19 | 1979-03-19 | GALVANIZATION PROCESS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE882256A true BE882256A (en) | 1980-07-01 |
Family
ID=19729125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE6/47109A BE882256A (en) | 1979-03-19 | 1980-03-14 | GALVANIZATION PROCESS |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE882256A (en) |
| LU (1) | LU81061A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015696A1 (en) * | 1995-10-25 | 1997-05-01 | Cominco Ltd. | Galvanizing alloy and process for reactive steels |
| WO1998029576A1 (en) * | 1997-01-02 | 1998-07-09 | Floridienne Chimie S.A. | Zinc alloys yielding anticorrosive coatings on ferrous materials |
| US6280795B1 (en) * | 1998-05-22 | 2001-08-28 | Cominco, Ltd. | Galvanizing of reactive steels |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1170902B (en) * | 1981-04-17 | 1987-06-03 | Centro Speriment Metallurg | ZINC-BASED ALLOY FOR THE COATING OF TUBES FOR THE TRANSPORT OF DRINKING WATERS |
| BE890256A (en) * | 1981-09-07 | 1982-03-08 | Centre Rech Metallurgique | IMPROVEMENTS IN GALVANIZING PROCESSES FOR STEEL SHEETS OR STRIPS |
| FR2675159B1 (en) * | 1991-04-12 | 1993-07-23 | Vieille Montagne France Sa | GALVANIZATION PROCESS AND ZINC ALLOY THAT CAN BE USED IN THIS PROCESS. |
| ZA971076B (en) * | 1996-02-23 | 1997-08-25 | Union Miniere Sa | Hot-dip galvanizing bath and process. |
-
1979
- 1979-03-19 LU LU81061A patent/LU81061A1/en unknown
-
1980
- 1980-03-14 BE BE6/47109A patent/BE882256A/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015696A1 (en) * | 1995-10-25 | 1997-05-01 | Cominco Ltd. | Galvanizing alloy and process for reactive steels |
| WO1998029576A1 (en) * | 1997-01-02 | 1998-07-09 | Floridienne Chimie S.A. | Zinc alloys yielding anticorrosive coatings on ferrous materials |
| US6458425B2 (en) * | 1997-01-02 | 2002-10-01 | Floridienne Chimine S.A. | Zinc alloys yielding anticorrosive coatings on ferrous materials |
| US6280795B1 (en) * | 1998-05-22 | 2001-08-28 | Cominco, Ltd. | Galvanizing of reactive steels |
Also Published As
| Publication number | Publication date |
|---|---|
| LU81061A1 (en) | 1980-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOO Effective date: 19850314 |