EP0061407A1 - Verfahren zum Korrigieren der Zusammensetzung eines Zinkbades zum Galvanisieren durch Hinzugabe von zusätzlichen Legierungskonzentraten und Zusammensetzung des Zugabematerials - Google Patents

Verfahren zum Korrigieren der Zusammensetzung eines Zinkbades zum Galvanisieren durch Hinzugabe von zusätzlichen Legierungskonzentraten und Zusammensetzung des Zugabematerials Download PDF

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Publication number: EP0061407A1
Authority: EP; European Patent Office
Prior art keywords: aluminum; zinc; alloy; ppm; magnesium
Prior art date: 1981-03-25
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.): Granted

Application number

EP82400522A

Other languages

English (en)

French (fr)

Other versions

EP0061407B1 (de

Inventor

Noel Dreulle

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

AUSTRALIAN MINING AND SMELTING EUROPE Ltd

BILLITON ZINK BV

Metallurgie Hoboken-Overpelt SA

MINARRIA E METALLURGICA DI PERTUSOLA Soc

SAMIM SpA

Asturienne France SA

Societe Miniere et Metallurgique de Penarroya

Norzink AS

Original Assignee

Metallurgie Hoboken-Overpelt SA

Societe des Mines et Fonderies de Zinc de la Vieille Montagne SA

Asturienne France SA

Societe Miniere et Metallurgique de Penarroya

AUSTRALIAN MINING AND SMELTING EUROPE Ltd

MINARRIA E METALLURGICA DI PERTUSOLA Soc

SAMIM SpA

BILLITON ZINK BV

Norzink AS

Priority date (The priority date 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 date listed.)

1981-03-25

Filing date

1982-03-23

Publication date

1982-09-29

1982-03-23 Application filed by Metallurgie Hoboken-Overpelt SA, Societe des Mines et Fonderies de Zinc de la Vieille Montagne SA, Asturienne France SA, Societe Miniere et Metallurgique de Penarroya , AUSTRALIAN MINING AND SMELTING EUROPE Ltd, MINARRIA E METALLURGICA DI PERTUSOLA Soc, SAMIM SpA, BILLITON ZINK BV, Norzink AS filed Critical Metallurgie Hoboken-Overpelt SA

1982-09-29 Publication of EP0061407A1 publication Critical patent/EP0061407A1/de

1985-07-17 Application granted granted Critical

1985-07-17 Publication of EP0061407B1 publication Critical patent/EP0061407B1/de

Status Expired legal-status Critical Current

Links

239000000203 mixture Substances 0.000 title claims abstract description 77
239000000654 additive Substances 0.000 title claims abstract description 43
238000000034 method Methods 0.000 title claims description 18
229910001297 Zn alloy Inorganic materials 0.000 title claims description 16
238000005275 alloying Methods 0.000 title description 4
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 87
239000011701 zinc Substances 0.000 claims abstract description 87
229910052725 zinc Inorganic materials 0.000 claims abstract description 85
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 83
229910052782 aluminium Inorganic materials 0.000 claims abstract description 80
239000011777 magnesium Substances 0.000 claims abstract description 73
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 66
229910052749 magnesium Inorganic materials 0.000 claims abstract description 66
229910045601 alloy Inorganic materials 0.000 claims abstract description 65
239000000956 alloy Substances 0.000 claims abstract description 65
238000005246 galvanizing Methods 0.000 claims abstract description 37
ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 28
229910052718 tin Inorganic materials 0.000 claims abstract description 28
230000000996 additive effect Effects 0.000 claims abstract description 26
229910000831 Steel Inorganic materials 0.000 claims abstract description 17
239000010959 steel Substances 0.000 claims abstract description 17
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
229910052710 silicon Inorganic materials 0.000 claims abstract description 9
239000010703 silicon Substances 0.000 claims abstract description 9
230000006735 deficit Effects 0.000 claims abstract description 8
229910000611 Zinc aluminium Inorganic materials 0.000 claims abstract description 6
HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims abstract description 6
230000002950 deficient Effects 0.000 claims abstract description 5
229910052790 beryllium Inorganic materials 0.000 claims description 48
ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 46
229910052751 metal Inorganic materials 0.000 claims description 23
239000002184 metal Substances 0.000 claims description 23
239000011133 lead Substances 0.000 claims description 17
238000007792 addition Methods 0.000 claims description 15
229910000952 Be alloy Inorganic materials 0.000 claims description 9
229910000838 Al alloy Inorganic materials 0.000 claims description 8
230000008569 process Effects 0.000 claims description 7
229910002058 ternary alloy Inorganic materials 0.000 claims description 7
230000004927 fusion Effects 0.000 claims description 6
229910001335 Galvanized steel Inorganic materials 0.000 claims description 2
239000008397 galvanized steel Substances 0.000 claims description 2
229910000861 Mg alloy Inorganic materials 0.000 claims 3
229910001092 metal group alloy Inorganic materials 0.000 abstract 1
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
230000003647 oxidation Effects 0.000 description 17
238000007254 oxidation reaction Methods 0.000 description 17
238000002844 melting Methods 0.000 description 14
230000008018 melting Effects 0.000 description 14
150000002739 metals Chemical class 0.000 description 13
238000009792 diffusion process Methods 0.000 description 9
230000005496 eutectics Effects 0.000 description 9
229910052742 iron Inorganic materials 0.000 description 9
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
239000003570 air Substances 0.000 description 6
238000011161 development Methods 0.000 description 6
230000018109 developmental process Effects 0.000 description 6
239000006185 dispersion Substances 0.000 description 6
239000012535 impurity Substances 0.000 description 6
SOWHJXWFLFBSIK-UHFFFAOYSA-N aluminum beryllium Chemical compound [Be].[Al] SOWHJXWFLFBSIK-UHFFFAOYSA-N 0.000 description 5
239000010953 base metal Substances 0.000 description 5
239000000306 component Substances 0.000 description 5
230000004907 flux Effects 0.000 description 5
238000007654 immersion Methods 0.000 description 5
239000010410 layer Substances 0.000 description 5
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
230000009471 action Effects 0.000 description 4
229910002056 binary alloy Inorganic materials 0.000 description 4
229910052802 copper Inorganic materials 0.000 description 4
239000010949 copper Substances 0.000 description 4
230000008901 benefit Effects 0.000 description 3
230000015572 biosynthetic process Effects 0.000 description 3
239000000470 constituent Substances 0.000 description 3
230000000694 effects Effects 0.000 description 3
230000007935 neutral effect Effects 0.000 description 3
229910052759 nickel Inorganic materials 0.000 description 3
238000003756 stirring Methods 0.000 description 3
NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
235000019270 ammonium chloride Nutrition 0.000 description 2
238000000576 coating method Methods 0.000 description 2
238000004090 dissolution Methods 0.000 description 2
230000002349 favourable effect Effects 0.000 description 2
230000006698 induction Effects 0.000 description 2
239000007788 liquid Substances 0.000 description 2
-1 magnesium metals Chemical class 0.000 description 2
238000012423 maintenance Methods 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
230000009257 reactivity Effects 0.000 description 2
230000009467 reduction Effects 0.000 description 2
235000005074 zinc chloride Nutrition 0.000 description 2
229910018167 Al—Be Inorganic materials 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
229910017532 Cu-Be Inorganic materials 0.000 description 1
229910000640 Fe alloy Inorganic materials 0.000 description 1
229910000746 Structural steel Inorganic materials 0.000 description 1
PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 description 1
230000002159 abnormal effect Effects 0.000 description 1
AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
239000012080 ambient air Substances 0.000 description 1
150000001572 beryllium Chemical class 0.000 description 1
ATBAMAFKBVZNFJ-YPZZEJLDSA-N beryllium-7 Chemical compound [7Be] ATBAMAFKBVZNFJ-YPZZEJLDSA-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
230000008859 change Effects 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
150000003841 chloride salts Chemical class 0.000 description 1
239000011248 coating agent Substances 0.000 description 1
238000004320 controlled atmosphere Methods 0.000 description 1
238000001816 cooling Methods 0.000 description 1
230000007423 decrease Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
238000004880 explosion Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
230000006872 improvement Effects 0.000 description 1
238000009434 installation Methods 0.000 description 1
229910000765 intermetallic Inorganic materials 0.000 description 1
KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
238000010409 ironing Methods 0.000 description 1
238000005272 metallurgy Methods 0.000 description 1
238000002156 mixing Methods 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
230000000135 prohibitive effect Effects 0.000 description 1
230000001681 protective effect Effects 0.000 description 1
238000005070 sampling Methods 0.000 description 1
238000007790 scraping Methods 0.000 description 1
238000005204 segregation Methods 0.000 description 1
238000007711 solidification Methods 0.000 description 1
230000008023 solidification Effects 0.000 description 1
230000002269 spontaneous effect Effects 0.000 description 1
239000002344 surface layer Substances 0.000 description 1
238000010301 surface-oxidation reaction Methods 0.000 description 1
230000002195 synergetic effect Effects 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
- 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

Definitions

the invention relates to a method for adjusting the composition of a zinc alloy, intended for the dip galvanizing of steels, including silicon steels, the alloy consisting of zinc of commercial purity with a weight content of 1,000 to 15,000 ppm lead and as additives of aluminum, tin and magnesium at weight contents selected from the respective ranges (Al) 100 to 5,000 ppm, (Sn) 300 to 20,000 ppm, and (Mg) 10 to 1000 ppm, the process consisting in adding to the molten zinc alloy, deficient in at least one additive, at least one metallic composition, soluble in molten zinc, and comprising relatively high content of at least one additive in quantity such that the deficit is compensated for.
the invention also relates to metallic compositions suitable for implementing the method.
Zinc with commercial purity corresponding to AFNOR NFA standards, classes Z6 and Z7 has maximum contents defined in Copper, Cadmium and Iron. In addition, it has maximum lead contents (15,000 p.p.m. for class Z6, 5,000 p.p.m. for class Z7). These lead contents, originally defined by the conditions for the production of zinc, have proved to be favorable for galvanization by lowering the viscosity of the molten zinc, so that they have been maintained while the evolution of the processes metallurgical allows the production of zinc with lead contents lower than 1000 ppm Frequently the categories Z6 and Z7 are currently obtained by adding lead to zinc.
Aluminum presence reduces torque reactivity iron / zinc, and at the levels indicated above, the reactivity of zinc with respect to silicon steels.
Tin and magnesium are active in reducing or eliminating the lack of coverage caused by the alumina formed by oxidation of aluminum. The simultaneous presence of tin and magnesium leads to remarkable results.
the invention also proposes a method for adjusting the composition of a zinc alloy, intended for the dip galvanization of steels; including silicon steels, the alloy consisting of zinc of commercial purity with a weight content of 1,000 to 15,000 ppm of lead, and as additives, aluminum, tin and magnesium to content by weight chosen from the respective ranges (Al) 100 to 5,000 ppm, (Sn) 300 to 20,000 ppm and (Mg) 10 to 1,000 ppm, process according to which the molten zinc alloy is added, deficient in at least one additive, at least one metallic composition soluble in molten zinc and comprising at relatively high content at least one additive, in an amount such that the deficit is compensated, characterized in that, while the tin composition is this metal in a practically pure state, the composition of magnesium is a ternary alloy zinc, magnesium, aluminum with by weight 5,000 to 50,000 ppm of magnesium and 10 to 500 ppm of aluminum, and the aluminum composition, added in an amount which takes into account the possible addition of ternary zinc
composition chosen from the zinc alloy for galvanization will correspond to the preferred compositions presented by French patent 2,366,376.
Nickel and copper are metals to be avoided in gal coatings vanization considered. Iron could have been tolerated in view of the traces of iron which inevitably dissolve in the alloy during the immersion of steel parts. However, the beryllium iron alloys hardly dissolve in zinc at 600 ° C.
the beryllium supply is obtained using a ternary zinc / aluminum / beryllium alloy, produced by dissolving an aluminum beryllium alloy containing 4-8% beryllium in pure zinc.
the weight composition of the ternary alloy is: aluminum 5,000 to 50,000 ppm, beryllium aluminum weight ratio 11.5 to 24 and zinc the rest.
the term zinc is used here in its usual meaning of base metal containing common impurities at levels where the properties of the metal, in relation to the intended application, are not appreciably affected.
impurities and alloying elements or additives which, at the specified contents, act on the properties of the base metal, in relation to the intended application.
the base metal contains, as initial impurity an element which is intended as an additive, at a content significantly higher than that of the initial impurity
the content as an additive means the sum of the initial content in impurity, and the amount of additive added thereafter.
a preferred composition of galvanizing alloy with aluminum, tin, magnesium and beryllium additives corresponds to: tin 500 + 25 ppm, aluminum 375 + 25 ppm, magnesium 60 + 3 ppm and beryllium 6.5 + 0.5 ppm, zinc at 1000-15000 ppm of lead constituting the remainder.
the ternary alloys preferred for supplying magnesium and beryllium respectively have weight compositions of magnesium 30,000 + 1,500 ppm, aluminum 100 + 5 ppm, and aluminum 9,000 + 450 ppm, beryllium 470 + 50 ppm, in both cases the rest being zinc.
zinc which constitutes at least 95% of the alloy by weight, can withstand some losses by oxidation without the composition of the alloy being substantially modified; lead and tin, less oxidizable than zinc, suffer only negligible losses by oxidation.
lead and tin less oxidizable than zinc, suffer only negligible losses by oxidation.
aluminum and magnesium disappear by oxidation relatively quickly. The readjustment of the composition of the alloy requires preferential additions of aluminum and magnesium.
the magnesium oxidizes in depth, and is close to its spontaneous ignition temperature in the air. Moreover, for the normal development of the galvanizing alloy, one operates so as to minimize the oxidation of aluminum and magnesium by preventing them from being in contact with air.
each of the metallic compositions used is assigned to a particular additive metal, in the sense that the concentration of the additive targeted in the composition must be much higher than the concentration in the alloy, while the concentration ratios of the other metals in the composition are not too far from what they are in the alloy or at least that the concentration ratios of the constituents of the composition relative to that of the targeted additive are .nettly lower than the ratios in the alloy.
aluminum there is a zinc aluminum alloy at 5% by weight of aluminum, its composition corresponding to the eutectic at melting point 385 ° C., and is therefore suitable as a metallic composition assigned to aluminum. .
magnesium there is a zinc / magnesium eutectic at 3% by weight of magnesium, with a melting point of 367 ° C.
This eutectic is unfortunately too fragile to be industrially usable, the cast ingots breaking on cooling, or during transport and essential handling.
the compositions sufficiently close to the eutectic to have an acceptable melting point (less than about 450 ° C.) are practically also ⁇ too fragile.
the addition of small amounts of aluminum significantly reduced the brittleness of the zinc / magnesium binaries. The effect begins to be felt at 10 p.p.m. (by weight) of aluminum.
the presence of aluminum reduces the oxidation of magnesium when the ingot is poured. At around 100 p.p.m.
Suitable metal compositions are obtained with 5,000 to 50,000 p.p.m. by weight of magnesium and the above-mentioned amounts of aluminum. We prefer a composition close to eutectic with 30,000 + 1,500 p.p.m. of magnesium and 100 + 5 p.p.m. of aluminum.
Example 1 Elaboration of a ternary zinc, magnesium, aluminum.
Example 2 Constitution of a tin, aluminum, magnesium galvanizing bath.
beryllium is felt for very low contents, from 4 ppm (by weight). Above 100 ppm, it can be seen that, at the usual temperature of galvanizing baths in operation, segregation of the beryllium collects on the surface and is evacuated with the dross. It was also found, from 15 ppm by weight of beryllium, for baths with a relatively high aluminum content, greater than 550 ppm, a synergistic action of aluminum and beryllium on the kinetics of the iron-zinc reaction (formation of intermetallic compounds).
Example 3 Development of a zinc-aluminum-beryllium ternary.
Example 1 In the induction furnace used in Example 1, 495 kg of zinc Z9 is melted under a neutral atmosphere. The temperature is raised to around 600 ° C. and 4.75 kg of beryllium aluminum alloy containing 5.25% beryllium are added. The temperature is maintained at 600 ° C. until intimate dispersion of the aluminum beryllium in the zinc, under the action of electromagnetic stirring.
the alloy is poured into ingot molds that are energetically cooled.
beryllium has also made it possible to somewhat reduce the tin bath contents, since tin is intended in particular to take over from magnesium when the content of the latter metal has lowered in the bath by oxidation, and that beryllium reduces the speed of magnesium oxidation.
Example 4 Constitution of a tin, aluminum, magnesium, beryllium galvanizing bath.
the consumption of the components of the bath is due, on the one hand, to the sampling of alloy constituting the coverings of part, and on the other hand to the oxidation of some of these components in contact either with the galvanizing flux, or with the air entrained by the parts upon immersion in the molten alloy.
Example 5 Maintenance of a dip galvanizing bath.
alloy compositions may vary within the range of the ranges indicated.
the encrypted value is understood as a central value in a usual range, such as + 5 X.

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Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Coating With Molten Metal (AREA)

EP82400522A 1981-03-25 1982-03-23 Verfahren zum Korrigieren der Zusammensetzung eines Zinkbades zum Galvanisieren durch Hinzugabe von zusätzlichen Legierungskonzentraten und Zusammensetzung des Zugabematerials Expired EP0061407B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8105955A FR2502641B1 (fr)	1981-03-25	1981-03-25	Procede pour ajuster la composition d'un alliage de zinc pour galvanisation au trempe, par ajout de compositions metalliques concentrees en additif d'alliage, et compositions d'addition
FR8105955		1981-03-25

Publications (2)

Publication Number	Publication Date
EP0061407A1 true EP0061407A1 (de)	1982-09-29
EP0061407B1 EP0061407B1 (de)	1985-07-17

Family

ID=9256631

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP82400522A Expired EP0061407B1 (de)	1981-03-25	1982-03-23	Verfahren zum Korrigieren der Zusammensetzung eines Zinkbades zum Galvanisieren durch Hinzugabe von zusätzlichen Legierungskonzentraten und Zusammensetzung des Zugabematerials

Country Status (6)

Country	Link
US (1)	US4439397A (de)
EP (1)	EP0061407B1 (de)
CA (1)	CA1177678A (de)
DE (1)	DE3264732D1 (de)
FR (1)	FR2502641B1 (de)
NO (1)	NO820994L (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1335867C (en) *	1988-09-02	1995-06-13	Verdun Hildreth Farnsworth	Rare earth and aluminium containing galvanising bath
ZA971076B (en) *	1996-02-23	1997-08-25	Union Miniere Sa	Hot-dip galvanizing bath and process.
US6569268B1 (en)	2000-10-16	2003-05-27	Teck Cominco Metals Ltd.	Process and alloy for decorative galvanizing of steel
US7182824B2 (en) *	2003-06-17	2007-02-27	Nisshin Steel Co., Ltd.	Method of manufacturing zinc alloy ingot

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE810222C (de) *	1950-06-10	1951-08-06	Karl Dipl-Ing Lorenz	Verfahren und Einrichtung zum Verzinken von Blechen und Gegenstaenden in aluminiumlegierten Baedern
US3164464A (en) *	1961-01-09	1965-01-05	Dow Chemical Co	Method of introducing magnesium into galvanizing baths
FR1396546A (fr) *	1964-03-13	1965-04-23	Vallourec	Procédé pour l'alimentation en zinc des cuves de galvanisation et installation pour la mise en oeuvre de ce procédé
US3320040A (en) *	1963-08-01	1967-05-16	American Smelting Refining	Galvanized ferrous article
US3480465A (en) *	1966-03-30	1969-11-25	Shichiro Ohshima	Method of chemically bonding aluminum or aluminum alloys to ferrous alloys
FR2366376A1 (fr) *	1976-10-01	1978-04-28	Dreulle Noel	Alliage destine a la galvanisation au trempe d'aciers, y compris aciers contenant du silicium, et procede de galvanisation adapte a cet alliage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2195566A (en) *	1938-04-23	1940-04-02	American Zinc Products Company	Zinc base alloy
NL112349C (de) *	1959-08-29
SE7506480L (sv) *	1974-06-07	1975-12-08	British Steel Corp	Sett och anordning for tillverkning av raffinerat, legerat stal.

1981
- 1981-03-25 FR FR8105955A patent/FR2502641B1/fr not_active Expired
1982
- 1982-03-23 CA CA000399113A patent/CA1177678A/fr not_active Expired
- 1982-03-23 US US06/361,081 patent/US4439397A/en not_active Expired - Fee Related
- 1982-03-23 EP EP82400522A patent/EP0061407B1/de not_active Expired
- 1982-03-23 DE DE8282400522T patent/DE3264732D1/de not_active Expired
- 1982-03-24 NO NO820994A patent/NO820994L/no unknown

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE810222C (de) *	1950-06-10	1951-08-06	Karl Dipl-Ing Lorenz	Verfahren und Einrichtung zum Verzinken von Blechen und Gegenstaenden in aluminiumlegierten Baedern
US3164464A (en) *	1961-01-09	1965-01-05	Dow Chemical Co	Method of introducing magnesium into galvanizing baths
US3320040A (en) *	1963-08-01	1967-05-16	American Smelting Refining	Galvanized ferrous article
FR1396546A (fr) *	1964-03-13	1965-04-23	Vallourec	Procédé pour l'alimentation en zinc des cuves de galvanisation et installation pour la mise en oeuvre de ce procédé
US3480465A (en) *	1966-03-30	1969-11-25	Shichiro Ohshima	Method of chemically bonding aluminum or aluminum alloys to ferrous alloys
FR2366376A1 (fr) *	1976-10-01	1978-04-28	Dreulle Noel	Alliage destine a la galvanisation au trempe d'aciers, y compris aciers contenant du silicium, et procede de galvanisation adapte a cet alliage

Also Published As

Publication number	Publication date
DE3264732D1 (en)	1985-08-22
CA1177678A (fr)	1984-11-13
EP0061407B1 (de)	1985-07-17
FR2502641A1 (fr)	1982-10-01
NO820994L (no)	1982-09-27
FR2502641B1 (fr)	1986-05-23
US4439397A (en)	1984-03-27

Legal Events

Date	Code	Title	Description
1982-07-31	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1982-09-29	AK	Designated contracting states	Designated state(s): DE GB IT NL SE
1983-05-11	17P	Request for examination filed	Effective date: 19830302
1984-09-17	ITF	It: translation for a ep patent filed
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