NO328823B1 - Metal wire based on zinc and aluminum and its use for thermal spraying for corrosion protection - Google Patents
Metal wire based on zinc and aluminum and its use for thermal spraying for corrosion protection Download PDFInfo
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- NO328823B1 NO328823B1 NO19991268A NO991268A NO328823B1 NO 328823 B1 NO328823 B1 NO 328823B1 NO 19991268 A NO19991268 A NO 19991268A NO 991268 A NO991268 A NO 991268A NO 328823 B1 NO328823 B1 NO 328823B1
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- Prior art keywords
- zinc
- aluminum
- corrosion protection
- wire
- thermal spraying
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 42
- 229910052782 aluminium Inorganic materials 0.000 title claims description 41
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 35
- 239000011701 zinc Substances 0.000 title claims description 32
- 229910052725 zinc Inorganic materials 0.000 title claims description 29
- 238000005260 corrosion Methods 0.000 title claims description 18
- 230000007797 corrosion Effects 0.000 title claims description 18
- 238000007751 thermal spraying Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 title description 2
- 239000002184 metal Substances 0.000 title description 2
- 229910052738 indium Inorganic materials 0.000 claims description 20
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 9
- 229910052749 magnesium Inorganic materials 0.000 description 9
- 239000011777 magnesium Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 229910001297 Zn alloy Inorganic materials 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 239000011133 lead Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000010285 flame spraying Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- -1 22% Chemical compound 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- QUQFTIVBFKLPCL-UHFFFAOYSA-L copper;2-amino-3-[(2-amino-2-carboxylatoethyl)disulfanyl]propanoate Chemical compound [Cu+2].[O-]C(=O)C(N)CSSCC(N)C([O-])=O QUQFTIVBFKLPCL-UHFFFAOYSA-L 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
Description
Gjenstand for foreliggende oppfinnelse er en tråd på basis av sink og aluminium, og som kan anvendes for korrosjonsbeskyttelse ved termisk påsprøyting, særlig som korrosjonsbeskyttelse mot høy luftfuktighet og høye kloridionekonsentrasjoner, for eksempel i nærheten av havet, i forbindelse med saltstrøing etc. The object of the present invention is a wire based on zinc and aluminium, which can be used for corrosion protection by thermal spraying, in particular as corrosion protection against high humidity and high chloride ion concentrations, for example near the sea, in connection with salt sprinkling etc.
Patentdokumentet DE 30 07 850 C2 beskriver anvendelse av en sinklegering i pulverform for mekanisk plettering, hvor det skal anvendes en legering av sink og en eller flere legeringstilsetninger, slik som 0,1 til 60% aluminium, opp til 5% nikkel, opp til 3% magnesium, opp til 3% kobber, opp til 2% silisium, inntil 1,5% titan, opp til 1% antimon, inntil 1% sølv, opp til 0,5% krom, 0,5% beryllium, samt opp til 0,1% kalsium, inntil 0,1% kobolt, inntil 0,1% natrium, opp til 0,1% kalium, 0,1% indium, og opp til 0,5% litium, samt 0,05% strontium, alt angitt i forhold til legeringens samlede vekt, bortsett fra vekten av forurensninger. Ved mekanisk plettering med et metallpulver blir dette pulver mekanisk påført substratet, slik at det dannes et sjikt på 10 um. Valseplettering, også under anvendelse av aluminiumpulver er for eksempel beskrevet i Aluminium-Taschenbuch, 13. opplag, 1974, side 927, avsnitt 1 og 2. The patent document DE 30 07 850 C2 describes the use of a zinc alloy in powder form for mechanical plating, where an alloy of zinc and one or more alloy additions, such as 0.1 to 60% aluminium, up to 5% nickel, up to 3 % magnesium, up to 3% copper, up to 2% silicon, up to 1.5% titanium, up to 1% antimony, up to 1% silver, up to 0.5% chromium, 0.5% beryllium, as well as up to 0.1% calcium, up to 0.1% cobalt, up to 0.1% sodium, up to 0.1% potassium, 0.1% indium, and up to 0.5% lithium, as well as 0.05% strontium, all stated in relation to the total weight of the alloy, except for the weight of impurities. In mechanical plating with a metal powder, this powder is mechanically applied to the substrate, so that a layer of 10 µm is formed. Roll plating, also using aluminum powder, is for example described in Aluminium-Taschenbuch, 13th edition, 1974, page 927, section 1 and 2.
Også ved den fremgangsmåte som er angitt i DE 30 07 850 C2 blir de deler som skal pletteres mekanisk etter avfetning ved en overflaterengjøring og kondi-sjonering utsatt for en lysbue-sjiktpåføring for dannelse av et overtrekk. De således fremstilte overtrekk blir i tillegg også utsatt for en kromat-behandling. Denne fremgangsmåte skiller seg fundamentalt fra termisk påsprøyting ved hjelp av tråder, som da kan utnyttes under flammepåsprøyting eller lysbuepåsprøyting. Flammepåsprøyting og lysbuepåsprøyting av trådmateriale kan på etterhånd påføres ferdige konstruksjonsdeler eller broer, stillaser, kraner etc. før de an-bringes på bruksstedet. Valseplettering er det derimot ikke mulig å utføre i etterhånd. Also in the method stated in DE 30 07 850 C2, the parts to be plated mechanically after degreasing during surface cleaning and conditioning are exposed to an arc layer application to form a coating. The covers produced in this way are also subjected to a chromate treatment. This method differs fundamentally from thermal spraying using wires, which can then be used during flame spraying or arc spraying. Flame spraying and arc spraying of wire material can subsequently be applied to finished construction parts or bridges, scaffolding, cranes etc. before they are placed at the place of use. However, it is not possible to carry out roller plating afterwards.
Patentskriftet DD-PS 4 822 angir at det er mulig å bearbeide sink/- aluminium-legeringer innenfor området for eutektoidisk forfall ved glødning og etterfølgende bråkjøling til gjenstander med høy formforandringsevne. Ut i fra dette materiale er det ved ekstrudering mulig å fremstille en tråd av en legering med 80% sink og 20% aluminium. The patent document DD-PS 4 822 indicates that it is possible to process zinc/aluminium alloys within the area of eutectoid decay by annealing and subsequent quenching into objects with a high ability to change shape. Based on this material, it is possible to produce a wire of an alloy with 80% zinc and 20% aluminum by extrusion.
Tråder for termisk påsprøyting har hittil enten bestått av finsink, av en ren sink/aluminium-legering med 15 vekt-% aluminium eller eventuelt av aluminium med 5 vekt-% magnesium. Wires for thermal spraying have so far either consisted of fine zinc, of a pure zinc/aluminium alloy with 15% aluminum by weight or possibly of aluminum with 5% magnesium by weight.
Ulempen ved termisk påsprøytede overflater bestående av finsink eller sink med 15 vekt-% aluminium ligger i det forhold at disse under de ovenfor angitte betingelser vil korrodere raskere og sterkere enn aluminium med 5% magnesium. Ved sinkbelegg eller belegg av sink/aluminium er det derfor ved belastning av fuktighet eller klorid nødvendig med ytterligere beskyttelsestiltak, slik som lakk-overtrekk. The disadvantage of thermally sprayed surfaces consisting of fine zinc or zinc with 15% aluminum by weight lies in the fact that under the above conditions these will corrode faster and more strongly than aluminum with 5% magnesium. In the case of zinc coating or zinc/aluminium coating, additional protective measures, such as varnish coating, are therefore necessary in case of exposure to moisture or chloride.
Ved utprøving i kondensvann i henhold til DIN 50018-KFW 0,2 s har det fremkommet en sterk korrosjon av finsink, mens sink med 15% aluminium har forholdt seg vesentlig gunstigere. When tested in condensed water in accordance with DIN 50018-KFW 0.2 s, a strong corrosion of fine zinc has occurred, while zinc with 15% aluminum has behaved significantly more favorably.
Men også sjiktovertrekk av aluminium og 5% magnesium, som oppviser høy stabilitet overfor høyt fuktighetsinnhold og høye kloridionekonsentrasjoner, har ved kondensvannutprøvning vist seg å korrodere sterkere enn sink med 15 vekt-% aluminium. But also layer coatings of aluminum and 5% magnesium, which show high stability against high moisture content and high chloride ion concentrations, have been shown to corrode more strongly than zinc with 15% aluminum by weight in condensation water tests.
Det er derfor et formål for foreliggende oppfinnelse å frembringe sinktråd på basis av sink og aluminium, og som så vel ved kondensvannutprøvning som også ved saltpåsprøytingsprøvning i henhold til DIN 50021 oppviser god korrosjonsbestandighet, og som da også eventuelt vil kunne oppvise samme korrosjonsbestandighet som aluminium med 5% magnesium overfor høy luftfuktighet og høyt kloridioneinnhold, hvilket vil si i henhold til saltpåsprøytingsprøven i samsvar med DIN 50021, eller til og med kan oppvise enda høyere korrosjonsbestandighet. It is therefore an object of the present invention to produce zinc wire on the basis of zinc and aluminium, and which both in condensation water testing and also in salt spray testing in accordance with DIN 50021 shows good corrosion resistance, and which will then also eventually be able to show the same corrosion resistance as aluminum with 5% magnesium against high humidity and high chloride ion content, i.e. according to the salt spray test in accordance with DIN 50021, or can even show even higher corrosion resistance.
Dette formål er da oppnådd ved hjelp av en tråd på basis av sink og aluminium, og som foruten sink så vel som vanlige forurensninger inneholder 8 til 33 vekt-% aluminium og fra 10 til 500 ppm indium og mindre enn 0,1 vekt % kopper, mindre enn 0,1 vekt % jern og mindre enn 1 vekt % bly, foruten sink og vanlige forurensninger. Videre vedrører oppfinnelsen anvendelse av en slik tråd for termisk påsprøyting som korrosjonsbeskyttelse. Fortrinnsvis inneholder denne tråd 10 til 24 vekt-% aluminium og 10 til 300 ppm indium. This purpose is then achieved by means of a wire based on zinc and aluminium, and which, in addition to zinc as well as common impurities, contains 8 to 33 wt% aluminum and from 10 to 500 ppm indium and less than 0.1 wt% copper , less than 0.1 wt% iron and less than 1 wt% lead, besides zinc and common impurities. Furthermore, the invention relates to the use of such a thread for thermal spraying as corrosion protection. Preferably, this wire contains 10 to 24 wt% aluminum and 10 to 300 ppm indium.
Spesielt foretrekkes en tråd med et innhold av 15 til 22 vekt-% aluminium, samt 20 til 200 ppm indium. Particularly preferred is a wire with a content of 15 to 22 weight-% aluminum, as well as 20 to 200 ppm indium.
Blant de tallrike eksempler som er angitt i DE 30 07 850 C2 er det tre eksempler hvori 0,1% indium er benyttet, nemlig eksemplene 41, 62 og 74. En så stor indium-andel fører imidlertid til sterk sprøhet og dårlig bearbeidbarhet for trådene. I henhold til oppfinnelsen er derfor indium-andelen begrenset til 500 ppm og fortrinnsvis benyttes bare 10 til 300 ppm indium. En sink/aluminium-tråd med 0,08% indium overgår fullstendig til sprø tilstand i kondensvannprøven. Among the numerous examples indicated in DE 30 07 850 C2, there are three examples in which 0.1% indium is used, namely examples 41, 62 and 74. However, such a large proportion of indium leads to strong brittleness and poor machinability of the threads . According to the invention, the indium proportion is therefore limited to 500 ppm and preferably only 10 to 300 ppm of indium is used. A zinc/aluminium wire with 0.08% indium completely transitions to a brittle state in the condensed water sample.
Fra DE 30 07 850 C2 fremgår det videre at tilsetningen av 0,1 vekt-% indium til et sinkpulver med 5% aluminium langt i fra har ført til optimal korrosjonsbestandighet. Ut i fra dette er det således på ingen måte blitt nærliggende å bearbeide en legering med mindre indiumandel til tråd for å oppnå et materiale som oppviser optimale egenskaper, når denne tråd bearbeides for senere å bli påført som korrosjonsbeskyttelse ved flammepåsprøyting eller lysbue-påsprøyting. From DE 30 07 850 C2 it further appears that the addition of 0.1% by weight indium to a zinc powder with 5% aluminum has by far led to optimal corrosion resistance. Based on this, it is therefore in no way possible to process an alloy with a smaller proportion of indium into wire in order to obtain a material that exhibits optimal properties, when this wire is processed to later be applied as corrosion protection by flame spraying or arc spraying.
Det oppnås optimale resultater når innholdet av vanlige forurensninger holdes så lavt som mulig. Spesielt bør legeringen inneholde så lite som mulig av kobber, jern og bly. Optimum results are achieved when the content of common contaminants is kept as low as possible. In particular, the alloy should contain as little copper, iron and lead as possible.
Som utgangsmateriale for tråden kan prinsipielt alle sinkkvaliteter i henhold til EN 1179 anvendes, hvor imidlertid sinksorter av kvalitet Z1 til Z4 foretrekkes, da disse inneholder klart mindre andeler av bly, jern og kobber slik det er ønskelig i henhold til oppfinnelsen. As starting material for the wire, in principle all zinc qualities according to EN 1179 can be used, where, however, zinc grades of quality Z1 to Z4 are preferred, as these contain clearly smaller proportions of lead, iron and copper as is desirable according to the invention.
Aluminium som legeringskomponent kan prinsipielt anvendes i de kvaliteter som er angitt i EN 576, og som i tilstrekkelig grad oppfyller de oppstilte renhets-fordringer. Aluminum as an alloy component can in principle be used in the qualities specified in EN 576, and which sufficiently fulfill the stated purity requirements.
Tråden i henhold til oppfinnelsen kan fremstilles ved hjelp av vanlige fremgangsmåter, nemlig ved støpning av den flytende legering til støpestreng med på-følgende valsing og trekning. For disse fremgangsmåter foretrekkes videre legeringer med bare 10 til 24 vekt-% aluminium, da legeringer med høyere aluminiuminnhold er vanskeligere å bearbeide. The wire according to the invention can be produced by means of usual methods, namely by casting the liquid alloy into a casting strand with subsequent rolling and drawing. For these processes, alloys with only 10 to 24% by weight aluminum are further preferred, as alloys with higher aluminum content are more difficult to process.
Tråden i henhold til oppfinnelsen kan på hittil vanlig måte benyttes for termisk påsprøyting, for eksempel ved flammepåsprøyting eller lysbue-påsprøyting. Disse fremgangsmåter er først og fremst forskjellige ved at de arbeider ved forskjellige prosesstemperaturer og derved også med forskjellige påføringsvirkningsgrader. The wire according to the invention can be used in the hitherto usual way for thermal spraying, for example by flame spraying or arc spraying. These methods are primarily different in that they work at different process temperatures and thereby also with different application efficiencies.
Av de etterfølgende utførelseseksempler og sammenligningseksempler vil det fremgå at den nye tråd oppviser tydelig forbedrede egenskaper og ut i fra summen av sine egenskaper er den overlegen den samlede teknikkens stilling. From the subsequent execution examples and comparison examples, it will appear that the new thread exhibits clearly improved properties and, based on the sum of its properties, it is superior to the overall state of the art.
Eksempel 1 Example 1
Av den vedføyde figur 1 fremgår det at ved kondensvannprøven i henhold til DIN 50018-KFW 0,2 s oppviser rensink de dårligste verdier, men også aluminium med 5 vekt-% magnesium blir sterkt korrodert. Den hittil vanlige tråd av sink med 15 vekt-% aluminium oppviser her gode verdier. Ved tilsetning av 400 ppm indium blir forholdene verken forbedret eller forringet. Sinktråder med 22, 33 og 55 vekt-% aluminium oppviser allerede dårligere verdier. Sinklegeringer med mer enn 25 vekt-% aluminium lar seg i tiltagende grad vanskeligere bearbeide til tråd. From the attached figure 1, it appears that in the condensation water test according to DIN 50018-KFW 0.2 s, pure zinc shows the worst values, but also aluminum with 5% by weight of magnesium is strongly corroded. The hitherto usual zinc wire with 15% aluminum by weight shows good values here. By adding 400 ppm indium, the conditions are neither improved nor worsened. Zinc wires with 22, 33 and 55% aluminum by weight already show poorer values. Zinc alloys with more than 25% aluminum by weight are increasingly more difficult to process into wire.
Eksempel 2 Example 2
Den samme tråd som i eksempel 1 ble underkastet saltsprøyteprøven i henhold til DIN 50021 - ss. Resultatene er gjengitt i figur 2. Av denne fremgår det at finsink atter gir de dårligste resultater og dessuten oppviser rustdannelse av betraktelig omfang. I motsetning til dette oppviser det tidligere valgte aluminium med 5% magnesium for slike formål klart bedre verdier og ingen rustdannelse. The same thread as in example 1 was subjected to the salt spray test in accordance with DIN 50021 - ss. The results are reproduced in figure 2. From this it is clear that fine zinc again gives the worst results and also shows considerable rust formation. In contrast to this, the previously chosen aluminum with 5% magnesium for such purposes clearly shows better values and no rust formation.
Sink med 15% aluminium viser i forhold til dette vesentlig dårligere korrosjonsbestandighet, samt rustdannelse. Ved tilsetning av mer aluminium til sink, nemlig 22%, 33% og 55% blir imidlertid korrosjonsforholdene sammenlignet med bare 15% aluminium tydelig forbedret, men det kan fremdeles observeres rustdannelse. Først ved tilsetning av 400 ppm indium til en sink/aluminium-legering med 15% aluminium blir det oppnådd resultater som er likeverdige, hvis ikke bedre, enn ved aluminium som er tilsatt 5% magnesium. Særlig ved kortvarig utlegning er denne legering overlegen aluminium med 5% magnesium. Compared to this, zinc with 15% aluminum shows significantly poorer corrosion resistance and rust formation. However, when adding more aluminum to zinc, namely 22%, 33% and 55%, the corrosion conditions compared to only 15% aluminum are clearly improved, but rust formation can still be observed. Only by adding 400 ppm of indium to a zinc/aluminium alloy with 15% aluminium, results are obtained which are equivalent, if not better, than with aluminum which has added 5% magnesium. Especially for short-term deployment, this alloy is superior to aluminum with 5% magnesium.
Eksempel 3 Example 3
Tråder på basis av sink og aluminium og som inneholder 22 vekt-% Wires based on zinc and aluminum and containing 22% by weight
aluminium og stigende andeler av indium ble utsatt for saltsprøyteprøven i henhold til DIN 50021 - ss. Resultatene er sammenstilt i figur 3, hvor det atter for sammen-ligning er angitt forholdene ved finsink og sink med 15% aluminium. Av denne figur aluminum and increasing proportions of indium were subjected to the salt spray test according to DIN 50021 - ss. The results are compiled in figure 3, where the conditions for fine zinc and zinc with 15% aluminum are again indicated for comparison. Of this figure
fremgår det at allerede 20 ppm indium fører til en betraktelig forbedring av korrosjonsforholdene, samt at det ved stigende andeler av indium kan oppnås ytterligere forbedrede korrosjonsforhold. Andeler over 500 liter ppm indium er verken prismessig forsvarlige eller fører til ytterligere forbedrede egenskaper. Utover dette bør det også tas med i betraktningen at legeringens bearbeidbarhet tii tråd blir dårligere ved tilsetning av større mengder indium. it appears that already 20 ppm of indium leads to a considerable improvement in the corrosion conditions, and that with increasing proportions of indium further improved corrosion conditions can be achieved. Proportions above 500 liters ppm indium are neither justifiable in terms of price nor lead to further improved properties. In addition to this, it should also be taken into account that the workability of the alloy into wire becomes worse when larger quantities of indium are added.
Eksempel 4 Example 4
Orienterende undersøkelser med forskjellige renhetsgrader av sink og aluminium ga det resultat at særlig forurensninger av mer enn 0,1 vekt-% kobber og mer enn 0,1 vekt-% jern førte til forringede egenskaper og særlig forsterket interkrystallinsk korrosjon, mens mer enn 1 vekt-% bly førte til forringede meka-niske egenskaper. Indicative investigations with different degrees of purity of zinc and aluminum gave the result that in particular impurities of more than 0.1% by weight of copper and more than 0.1% by weight of iron led to deteriorated properties and particularly increased intercrystalline corrosion, while more than 1% by weight -% lead led to deteriorated mechanical properties.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19811447A DE19811447C2 (en) | 1998-03-17 | 1998-03-17 | Wire based on zinc and aluminum and its use in thermal spraying as corrosion protection |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO991268D0 NO991268D0 (en) | 1999-03-16 |
| NO991268L NO991268L (en) | 1999-09-20 |
| NO328823B1 true NO328823B1 (en) | 2010-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| NO19991268A NO328823B1 (en) | 1998-03-17 | 1999-03-16 | Metal wire based on zinc and aluminum and its use for thermal spraying for corrosion protection |
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| Country | Link |
|---|---|
| EP (1) | EP0943695B1 (en) |
| DE (2) | DE19811447C2 (en) |
| DK (1) | DK0943695T3 (en) |
| NO (1) | NO328823B1 (en) |
| PT (1) | PT943695E (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653831A (en) * | 2012-03-30 | 2012-09-05 | 长兴县华峰喷焊材料电炉有限公司 | Hot-sprayed zinc-aluminum alloy wire and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT500948B8 (en) * | 2004-12-16 | 2007-02-15 | Brunner Verzinkerei Brueder Ba | CORROSION PROTECTION LAYER, METHOD FOR PRODUCING A CORROSION PROTECTION LAYER, MEDIUM AND APPARATUS FOR PERFORMING THE PROCESS |
| EP1762639A1 (en) * | 2005-09-13 | 2007-03-14 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Heat transfer tube for LNG vaporizer, its production method, and LNG vaporizer using such heat transfer tubes |
| EP2803751A1 (en) * | 2013-05-16 | 2014-11-19 | Linde Aktiengesellschaft | Method for applying an anti-corrosion coating |
| DE102016101478A1 (en) | 2016-01-28 | 2017-08-03 | Balver Zinn Josef Jost GmbH & Co. KG | Use of an alloy composition for the production of thermally sprayed anticorrosive coatings |
| CN111496006B (en) * | 2020-06-03 | 2022-04-19 | 铜陵龙峰新材料有限公司 | Preparation method of zinc alloy wire for end face gold spraying of metalized film capacitor |
| DE102021005998A1 (en) | 2021-12-04 | 2023-06-07 | Dr. Rosert RCT GmbH | Additional material for thermal spraying and manufacturing process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD4822A (en) * | ||||
| GB2046302A (en) * | 1979-03-02 | 1980-11-12 | Mitsui Mining & Smelting Co | Zinc alloy powder |
| GB2313382A (en) * | 1996-05-23 | 1997-11-26 | Vidal Henri Brevets | Metal coating |
-
1998
- 1998-03-17 DE DE19811447A patent/DE19811447C2/en not_active Expired - Fee Related
-
1999
- 1999-03-04 EP EP99104369A patent/EP0943695B1/en not_active Expired - Lifetime
- 1999-03-04 DE DE59907492T patent/DE59907492D1/en not_active Expired - Fee Related
- 1999-03-04 DK DK99104369T patent/DK0943695T3/en active
- 1999-03-04 PT PT99104369T patent/PT943695E/en unknown
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653831A (en) * | 2012-03-30 | 2012-09-05 | 长兴县华峰喷焊材料电炉有限公司 | Hot-sprayed zinc-aluminum alloy wire and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| NO991268L (en) | 1999-09-20 |
| DE19811447A1 (en) | 1999-09-30 |
| DE59907492D1 (en) | 2003-12-04 |
| EP0943695B1 (en) | 2003-10-29 |
| DK0943695T3 (en) | 2004-03-15 |
| NO991268D0 (en) | 1999-03-16 |
| EP0943695A1 (en) | 1999-09-22 |
| DE19811447C2 (en) | 2002-08-08 |
| PT943695E (en) | 2004-03-31 |
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