WO1999064168A1 - Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products - Google Patents
Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products Download PDFInfo
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- WO1999064168A1 WO1999064168A1 PCT/US1999/012867 US9912867W WO9964168A1 WO 1999064168 A1 WO1999064168 A1 WO 1999064168A1 US 9912867 W US9912867 W US 9912867W WO 9964168 A1 WO9964168 A1 WO 9964168A1
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- Prior art keywords
- process according
- coating
- metal
- alloy
- bath
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 39
- 239000000956 alloy Substances 0.000 title claims abstract description 39
- 229910000611 Zinc aluminium Inorganic materials 0.000 title description 14
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 title description 14
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000000576 coating method Methods 0.000 claims abstract description 72
- 239000011248 coating agent Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 55
- 230000008569 process Effects 0.000 claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 238000007598 dipping method Methods 0.000 claims abstract description 15
- 229910007570 Zn-Al Inorganic materials 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 230000001464 adherent effect Effects 0.000 claims abstract 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 238000005554 pickling Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 2
- 239000011247 coating layer Substances 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 24
- 239000010949 copper Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 14
- 238000005246 galvanizing Methods 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 230000004907 flux Effects 0.000 description 9
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 8
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910001122 Mischmetal Inorganic materials 0.000 description 5
- 235000005074 zinc chloride Nutrition 0.000 description 5
- 239000011592 zinc chloride Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910018104 Ni-P Inorganic materials 0.000 description 3
- 229910018536 Ni—P Inorganic materials 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000806 Latten Inorganic materials 0.000 description 1
- 229910000528 Na alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- 229910000624 NiAl3 Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- DNEHKUCSURWDGO-UHFFFAOYSA-N aluminum sodium Chemical compound [Na].[Al] DNEHKUCSURWDGO-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008199 coating composition Substances 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
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/026—Deposition of sublayers, e.g. adhesion layers or pre-applied alloying elements or corrosion protection
Definitions
- the present invention is directed to a pre-coating for use in galvanizing procedures with zinc-aluminum alloys for metallic manufactured products. More precisely, it refers to the noncontinuous coating of metallic manufactured products of any size or shape in which electroless pre-coating with a metal to protect the part precedes dipping into a molten bath of zinc-aluminum alloy.
- metallic galvanizing may occur in either a molten metal bath or an electrolytic bath. Both baths may be either continuous or noncontinuous. At present, noncontinuous processes are mainly applicable to metallic products of a limited size and dimension, such as screws, bolts, etc.. However, there is a trend towards coating metallic products of indefinite dimension, such as metallic strips, bars and wires, using a continuous galvanizing process. The strips, bars or wires are then transformed into the desired final products by means such as cutting and pressing the strips.
- This method has several disadvantages. For example, the desired final products have cut edges without any protective coating and are therefore exposed to attacks from environmental agents. Due to the need for quality products in the market, these disadvantages are becoming more relevant than the advantages of galvanizing with the continuous process.
- Noncontinuous zinc-aluminum galvanization presents numerous advantages because it imparts superior resistance to hot oxidation and the attack of many aggressive media.
- it has been impossible to obtain good results from hot zinc-aluminum alloy noncontinuous galvanization because it is more expensive and less practical to apply surface preparation techniques, such as high temperature treatment with hydrogen, in noncontinuous versus continuous processes.
- classical zinc chloride and ammonium fluxes lose their effectiveness as soon as the aluminum content in the bath is over 0.01%, a problem for noncontinuous processes.
- the relevant process uses a superficial conditioning system consisting of a 50% boiling caustic soda wash, followed by a wash, a 50% hydrochloric acid picking, wash, drying, flux either in ammonium chloride and zinc chloride (ratio 3:1) or in ammonium chloride, chrysolite and ammonium fluoride (ratio 5:3:1) and final wash.
- the products are then immediately dipped in a 600 - 650°C Al-55% Zn-43.5% Si-1.5% bath.
- Good results are obtained for carbon steel products and malleable gray pig iron products, but the pretreatment is complex and expensive and the galvanizing process uneconomical because of the large amount of dross produced.
- Taiwan Proceedings of the 1st Asian-Pacific General Galvanizing Conference, pages 158-166, Taipei, Taiwan, September 15-18, 1992.
- the flux includes zinc chloride, 15-20%) ammonium, 5-10% alcohol, and 0.05-0.1%) non ionic surface-active agent.
- the parts to be treated are dipped at 65 °C for 30-120 sec.
- the coating baths also contain rare earth elements, i.e., 0.02% La and 0.02-0.04%) Ce, and are kept at 450-520 °C.
- the present invention is directed to a metal electroless pre-coating treatment for the surface of a part to be galvanized using a hot zinc-aluminum alloy coating.
- the pre-coating metal should be chosen among the group including nickel, copper, cobalt, and tin.
- the pre-coating must have a weight range of 1 to 35 g/m 2 , or, more preferably, a range of 5 to 25 g/m 2 .
- the treatment process includes the usual stages of cleaning, pickling and washing followed by the addition of a thin, light, metallic protective pre-coating. After a new wash and drying, the part is dipped into the molten bath of zinc-aluminum alloy.
- a bath with sodium hypophosphite as a reductant may be used.
- This bath should be stabilized with 1 - 4 ppm of Pb, with the temperature between 80 and 90 °C and the pH fixed between 4.5 and 6 for Ni and with the temperature between 20 and 30 °C and the pH between 12 and 13 for Cu.
- the plating time ranges between a few seconds (i.e. 10 seconds for ripped steel bars using Ni) up to a few minutes (i.e. 600 sec. for steel sheets using Cu).
- the P percentage of the pre- coating should be between 8 and 12 wt%>.
- Either Ni or Cu are preferred as a flash pre- coating for use with zinc-aluminum alloys containing between 0.1 and 99.1 wt%> Al.
- Zinc-aluminum alloys containing between 0.1 and 25 wt%, and preferably about 5% aluminum are preferred.
- the copper flash pre-coating should be between 0.3 and 3 ⁇ m thick.
- the nickel flash pre-coating should be between 0.1 and 4 ⁇ m thick.
- Ni pre-coating occurs in strongly reducing conditions on a steel surface with no oxides, the oxides having been previously removed by the HC1 pickling.
- the metallic layer protects the steel surface from oxidation which primarily occurs during immersion into the molten metal.
- the Ni reacts with the Al of the Zn-Al alloy to form an interface compound layer (Ni 3 Al 3 -NiAl 3 or NiAl).
- the reaction between Al, Zn and Fe starts and the so-called adherence layer forms and a coating with good- morphology ensues.
- Ni is not transformed entirely by the reaction with Al, for instance because of a too short immersion time, or a too-thick Ni layer, or because the bath temperature is incorrect, then the Al-Zn-Fe reaction will not start and a good coating will not form.
- a similar reaction occurs when Cu, Co, or Sn is used as the pre-coating metal.
- the amount of Ni, Cu, Co or Sn deposited does influence the final result.
- coating quality is a function of the reaction time in the electroless pre-coating solution, of the solution temperature, of steel surface reactivity, and, finally, of the hot-dip coating parameters.
- the Al content of the final coating does affect the dipping time and the molten bath temperature, which must be at least 50°C above the alloy melting point.
- the compositions of both the Ni and Cu pre-coating flashes are fixed and related to the Al content of the final coating only in determining which of the two flashes is preferable.
- the best mode parameters for coating steel sheets or ripped steel bars (see Example 1 for detailed descriptions of the steel) with a Ni pre-coating followed by a Zn-5%>-Al-0.1%> mischmetal hot-bath coating are given is Table 4.
- the parameters for coating Type 1 steel (see Table 1 ) with a Ni pre-coating followed by a Al-55 wt%, Zn-43.5 wt%, Si-1.5 wt% hot bath are given in Table 5.
- the best mode parameters for coating sheet steel (see Example 1) with a Cu pre-coating followed by a Zn-5%-Al-0.1%> mischmetal hot-bath are given in Table 7.
- Table 4 presents the best mode for Zn-5%A1-0.1% mischmetal coatings:
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- 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)
- Chemically Coating (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU45532/99A AU4553299A (en) | 1998-06-09 | 1999-06-08 | Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products |
JP2000553222A JP2002517612A (en) | 1998-06-09 | 1999-06-08 | Method for discontinuously galvanizing zinc-aluminum alloy on metal products |
CA002334596A CA2334596A1 (en) | 1998-06-09 | 1999-06-08 | Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products |
MXPA00012310A MXPA00012310A (en) | 1998-06-09 | 1999-06-08 | Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products. |
EP99928473A EP1109627A4 (en) | 1998-06-09 | 1999-06-08 | Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8855598P | 1998-06-09 | 1998-06-09 | |
US60/088,555 | 1998-06-09 | ||
US13804998A | 1998-08-21 | 1998-08-21 | |
US09/138,049 | 1998-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999064168A1 true WO1999064168A1 (en) | 1999-12-16 |
Family
ID=26778796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/012867 WO1999064168A1 (en) | 1998-06-09 | 1999-06-08 | Manufacturing process for noncontinuous galvanization with zinc-aluminum alloys over metallic manufactured products |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1109627A4 (en) |
JP (1) | JP2002517612A (en) |
AU (1) | AU4553299A (en) |
CA (1) | CA2334596A1 (en) |
MX (1) | MXPA00012310A (en) |
WO (1) | WO1999064168A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002004693A2 (en) * | 2000-07-12 | 2002-01-17 | International Lead Zinc Research Organization, Inc. | Improvement in the production of a zinc-aluminum alloy coating by immersion into molten metal baths |
WO2005075696A2 (en) * | 2004-02-04 | 2005-08-18 | Nv Bekaert Sa | Low-carbon steel wire with nickel sub coating |
Citations (8)
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US4228224A (en) * | 1979-04-12 | 1980-10-14 | Rockwell International Corporation | Positive electrode for electrical energy storage device |
US4285995A (en) * | 1980-03-10 | 1981-08-25 | Inland Steel Company | Process for increasing alloying rate of galvanized coating on steel |
US4301196A (en) * | 1978-09-13 | 1981-11-17 | Kollmorgen Technologies Corp. | Electroless copper deposition process having faster plating rates |
US4505958A (en) * | 1981-05-22 | 1985-03-19 | Hermann Huster Gmbh & Co. | Method for hot dip galvanizing metallic workpieces |
US5141781A (en) * | 1988-04-14 | 1992-08-25 | Nippon Galvanizing Co., Ltd. | High adhesion molten aluminum-zinc alloy plating process |
US5203985A (en) * | 1990-10-09 | 1993-04-20 | Nippon Steel Corporation | Process for manufacturing galvanized steel sheet by nickel pre-coating method |
US5571566A (en) * | 1994-03-10 | 1996-11-05 | Union Steel Manufacturing Co., Ltd. | Method of manufacturing a coated steel |
US5595943A (en) * | 1994-06-30 | 1997-01-21 | Hitachi, Ltd. | Method for formation of conductor using electroless plating |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3726705A (en) * | 1971-06-30 | 1973-04-10 | Inland Steel Co | Process for galvanizing a ferrous metal article |
JPH0753901B2 (en) * | 1989-12-07 | 1995-06-07 | 株式会社興和工業所 | Hot dip galvanizing method |
JPH03243749A (en) * | 1990-02-22 | 1991-10-30 | Nippon Steel Corp | Production of alloying hot dip galvanized steel sheet |
US6200636B1 (en) * | 1998-08-19 | 2001-03-13 | The University Of Cincinnati | Fluxing process for galvanization of steel |
-
1999
- 1999-06-08 CA CA002334596A patent/CA2334596A1/en not_active Abandoned
- 1999-06-08 WO PCT/US1999/012867 patent/WO1999064168A1/en not_active Application Discontinuation
- 1999-06-08 AU AU45532/99A patent/AU4553299A/en not_active Abandoned
- 1999-06-08 JP JP2000553222A patent/JP2002517612A/en active Pending
- 1999-06-08 EP EP99928473A patent/EP1109627A4/en not_active Withdrawn
- 1999-06-08 MX MXPA00012310A patent/MXPA00012310A/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4301196A (en) * | 1978-09-13 | 1981-11-17 | Kollmorgen Technologies Corp. | Electroless copper deposition process having faster plating rates |
US4228224A (en) * | 1979-04-12 | 1980-10-14 | Rockwell International Corporation | Positive electrode for electrical energy storage device |
US4285995A (en) * | 1980-03-10 | 1981-08-25 | Inland Steel Company | Process for increasing alloying rate of galvanized coating on steel |
US4505958A (en) * | 1981-05-22 | 1985-03-19 | Hermann Huster Gmbh & Co. | Method for hot dip galvanizing metallic workpieces |
US5141781A (en) * | 1988-04-14 | 1992-08-25 | Nippon Galvanizing Co., Ltd. | High adhesion molten aluminum-zinc alloy plating process |
US5203985A (en) * | 1990-10-09 | 1993-04-20 | Nippon Steel Corporation | Process for manufacturing galvanized steel sheet by nickel pre-coating method |
US5571566A (en) * | 1994-03-10 | 1996-11-05 | Union Steel Manufacturing Co., Ltd. | Method of manufacturing a coated steel |
US5595943A (en) * | 1994-06-30 | 1997-01-21 | Hitachi, Ltd. | Method for formation of conductor using electroless plating |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002004693A2 (en) * | 2000-07-12 | 2002-01-17 | International Lead Zinc Research Organization, Inc. | Improvement in the production of a zinc-aluminum alloy coating by immersion into molten metal baths |
WO2002004693A3 (en) * | 2000-07-12 | 2002-04-11 | Int Lead Zinc Res | Improvement in the production of a zinc-aluminum alloy coating by immersion into molten metal baths |
JP2004502868A (en) * | 2000-07-12 | 2004-01-29 | インターナショナル リード ジンク リサーチ オーガナイゼーション,インコーポレーデット. | Improvement of zinc-aluminum alloy film forming method by immersion in molten metal bath |
WO2005075696A2 (en) * | 2004-02-04 | 2005-08-18 | Nv Bekaert Sa | Low-carbon steel wire with nickel sub coating |
WO2005075697A1 (en) * | 2004-02-04 | 2005-08-18 | Nv Bekaert Sa | High-carbon steel wire with nickel sub coating |
WO2005075696A3 (en) * | 2004-02-04 | 2005-10-06 | Bekaert Sa Nv | Low-carbon steel wire with nickel sub coating |
US7300706B2 (en) | 2004-02-04 | 2007-11-27 | Nv Bekaert Sa | High-carbon steel wire with nickel sub coating |
Also Published As
Publication number | Publication date |
---|---|
JP2002517612A (en) | 2002-06-18 |
MXPA00012310A (en) | 2002-10-23 |
EP1109627A1 (en) | 2001-06-27 |
CA2334596A1 (en) | 1999-12-16 |
EP1109627A4 (en) | 2001-09-12 |
AU4553299A (en) | 1999-12-30 |
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