EP0137540A2 - Procédé de zingage électrolytique d'acier - Google Patents

Procédé de zingage électrolytique d'acier Download PDF

Info

Publication number: EP0137540A2
Authority: EP; European Patent Office
Prior art keywords: acid; zinc; steel; galvanizing; oxygen acids
Prior art date: 1983-09-28
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP84201280A

Other languages

German (de)

English (en)

Other versions

EP0137540A3 (fr

Inventor

Werner Dr. Rausch

Gerhard Müller

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.)

GEA Group AG

Original Assignee

Metallgesellschaft AG

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.)

1983-09-28

Filing date

1984-09-07

Publication date

1985-04-17

1984-09-07 Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG

1985-04-17 Publication of EP0137540A2 publication Critical patent/EP0137540A2/fr

1987-05-27 Publication of EP0137540A3 publication Critical patent/EP0137540A3/fr

Status Withdrawn legal-status Critical Current

Links

239000011701 zinc Substances 0.000 title claims abstract description 27
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 23
229910052725 zinc Inorganic materials 0.000 title claims abstract description 23
238000000034 method Methods 0.000 title claims abstract description 14
229910000831 Steel Inorganic materials 0.000 title claims abstract description 8
239000010959 steel Substances 0.000 title claims abstract description 8
238000007747 plating Methods 0.000 title description 3
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 11
238000005246 galvanizing Methods 0.000 claims abstract description 11
150000002926 oxygen Chemical class 0.000 claims abstract description 10
230000003647 oxidation Effects 0.000 claims abstract description 5
238000007254 oxidation reaction Methods 0.000 claims abstract description 5
150000003839 salts Chemical class 0.000 claims abstract description 4
DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 claims abstract description 3
RMGVZKRVHHSUIM-UHFFFAOYSA-N dithionic acid Chemical compound OS(=O)(=O)S(O)(=O)=O RMGVZKRVHHSUIM-UHFFFAOYSA-N 0.000 claims abstract 2
239000008151 electrolyte solution Substances 0.000 claims description 12
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
229910052717 sulfur Inorganic materials 0.000 claims description 8
239000011593 sulfur Substances 0.000 claims description 8
229940021013 electrolyte solution Drugs 0.000 claims description 5
150000008064 anhydrides Chemical class 0.000 claims description 2
HRKQOINLCJTGBK-UHFFFAOYSA-N dihydroxidosulfur Chemical compound OSO HRKQOINLCJTGBK-UHFFFAOYSA-N 0.000 claims description 2
239000003792 electrolyte Substances 0.000 abstract description 9
239000002253 acid Substances 0.000 abstract description 8
238000000576 coating method Methods 0.000 abstract description 4
150000008065 acid anhydrides Chemical class 0.000 abstract description 2
150000007513 acids Chemical class 0.000 abstract description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
230000015572 biosynthetic process Effects 0.000 description 7
239000011734 sodium Substances 0.000 description 7
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
239000000243 solution Substances 0.000 description 6
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 4
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
229910019142 PO4 Inorganic materials 0.000 description 4
238000004140 cleaning Methods 0.000 description 4
238000005260 corrosion Methods 0.000 description 4
230000007797 corrosion Effects 0.000 description 4
KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 4
235000021317 phosphate Nutrition 0.000 description 4
239000000654 additive Substances 0.000 description 3
239000011248 coating agent Substances 0.000 description 3
230000009189 diving Effects 0.000 description 3
238000007654 immersion Methods 0.000 description 3
239000000203 mixture Substances 0.000 description 3
239000003973 paint Substances 0.000 description 3
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
239000010452 phosphate Substances 0.000 description 3
238000004448 titration Methods 0.000 description 3
XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
101100117236 Drosophila melanogaster speck gene Proteins 0.000 description 2
206010013786 Dry skin Diseases 0.000 description 2
CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
241001295925 Gegenes Species 0.000 description 2
150000001768 cations Chemical class 0.000 description 2
239000013078 crystal Substances 0.000 description 2
238000005238 degreasing Methods 0.000 description 2
239000006185 dispersion Substances 0.000 description 2
238000001035 drying Methods 0.000 description 2
238000005868 electrolysis reaction Methods 0.000 description 2
229910052759 nickel Inorganic materials 0.000 description 2
XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 2
GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
238000005507 spraying Methods 0.000 description 2
239000004094 surface-active agent Substances 0.000 description 2
LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
229910000165 zinc phosphate Inorganic materials 0.000 description 2
QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
229910001335 Galvanized steel Inorganic materials 0.000 description 1
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
229910002651 NO3 Inorganic materials 0.000 description 1
229910004835 Na2B4O7 Inorganic materials 0.000 description 1
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
230000003213 activating effect Effects 0.000 description 1
238000007792 addition Methods 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
239000003513 alkali Substances 0.000 description 1
229910052783 alkali metal Inorganic materials 0.000 description 1
150000001340 alkali metals Chemical class 0.000 description 1
229910052782 aluminium Inorganic materials 0.000 description 1
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
150000001450 anions Chemical class 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
239000011260 aqueous acid Substances 0.000 description 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
239000004327 boric acid Substances 0.000 description 1
229910052791 calcium Inorganic materials 0.000 description 1
239000011575 calcium Substances 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
229910052802 copper Inorganic materials 0.000 description 1
239000010949 copper Substances 0.000 description 1
239000008367 deionised water Substances 0.000 description 1
229910021641 deionized water Inorganic materials 0.000 description 1
BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
229910000397 disodium phosphate Inorganic materials 0.000 description 1
235000019800 disodium phosphate Nutrition 0.000 description 1
UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
238000006253 efflorescence Methods 0.000 description 1
239000000839 emulsion Substances 0.000 description 1
235000013861 fat-free Nutrition 0.000 description 1
238000009472 formulation Methods 0.000 description 1
239000008397 galvanized steel Substances 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
239000011133 lead Substances 0.000 description 1
229910052748 manganese Inorganic materials 0.000 description 1
239000011572 manganese Substances 0.000 description 1
239000000463 material Substances 0.000 description 1
JCYPECIVGRXBMO-FOCLMDBBSA-N methyl yellow Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1 JCYPECIVGRXBMO-FOCLMDBBSA-N 0.000 description 1
150000002828 nitro derivatives Chemical class 0.000 description 1
238000005457 optimization Methods 0.000 description 1
239000007800 oxidant agent Substances 0.000 description 1
229910052760 oxygen Inorganic materials 0.000 description 1
239000001301 oxygen Substances 0.000 description 1
238000010422 painting Methods 0.000 description 1
HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 description 1
150000002978 peroxides Chemical class 0.000 description 1
150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
238000005554 pickling Methods 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
206010037844 rash Diseases 0.000 description 1
FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
239000001488 sodium phosphate Substances 0.000 description 1
229910052911 sodium silicate Inorganic materials 0.000 description 1
235000010265 sodium sulphite Nutrition 0.000 description 1
AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
235000019345 sodium thiosulphate Nutrition 0.000 description 1
238000003756 stirring Methods 0.000 description 1
238000003860 storage Methods 0.000 description 1
WQSRXNAKUYIVET-UHFFFAOYSA-N sulfuric acid;zinc Chemical compound [Zn].OS(O)(=O)=O WQSRXNAKUYIVET-UHFFFAOYSA-N 0.000 description 1
JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
229910000406 trisodium phosphate Inorganic materials 0.000 description 1
NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
229910000368 zinc sulfate Inorganic materials 0.000 description 1
239000011686 zinc sulphate Substances 0.000 description 1

Classifications

- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc

Definitions

the invention relates to a method for the electrolytic galvanizing of steel by means of sulfuric acid, aqueous zinc electrolyte solutions
the phosphating baths for zinc treatment contain, in particular, zinc and phosphate as components determining the layer formation.
other cations such as nickel, copper, calcium, manganese and Alkali metal be present.
oxidizing agents for example from the group nitrate, chlorate, nitrite, peroxide, organic nitro compounds, are also used.
Other possible additives include fluoride, complex fluoride, chloride, organic polyhydroxycarboxylic acid, complex phosphates and surfactants.
the baths are used in the immersion, spraying / immersion and spraying process at temperatures of typically 30 to 70 ° C. and treatment times of, for example, 0.5 to 5 minutes (EP-OS 69 950).
electrolytic zinc surfaces are to be phosphated, which are contaminated by oil and fat films, the phosphating must be preceded by a usually alkaline aqueous degreasing. Between degreasing and phosphating is rinsed with water.
rinsing is carried out with water and then usually aftertreated with a passivating rinse.
the object of the invention is to provide a method for electrolytic galvanizing which does not have the aforementioned disadvantages, in particular is not associated with the formation of specks mentioned in the subsequent treatment.
the object is achieved in that the method of the type mentioned according to the invention is designed in such a way that the galvanizing is carried out with an electrolytic solution which contains one or more sulfuric oxygen acids with a sulfur oxidation number of +5 to +1.
the oxidation number is understood to mean the charge that an atom (of sulfur) would have in the molecule if the molecule consisted exclusively of ions.
sulfuric acid zinc electrolyte solutions are understood to mean those electrolytes which have a pH below 5 and - in addition to zinc - have at least a considerable proportion of sulfate ions.
Other anions that may be present, are Z .B. Chloride, acetate, citrate and boric acid.
the electrolyte can contain, for example, ammonium, alkali, aluminum, iron, nickel, lead, antimony, tin, alkaline earth, which can be deliberately added to the electrolyte to influence its properties, or the anodes or other sources can be added accidentally or unintentionally via the make-up and top-up water get into this.
the electrolyte solutions are mostly used above room temperature and at cathode current densities between, for example, 1 and 100 A / dm 2 .
the electrolysis is usually carried out until a zinc coating having a thickness between 2 and 15 / is deposited in order.
the process is preferably used in a continuous pass for the galvanizing of steel strip. However, it can also be used for the treatment of drum and rack goods.
rinsing is carried out with water and, as a rule, post-treated with suitable agents to avoid the formation of white rust during storage and shipping, for example with aqueous oil emulsions.
Galvanized strip is often lightly re-rolled to smooth the surface and / or to improve the drawing properties.
the oxygen acids of 1- to 5-valent sulfur to be used in the process according to the invention can be introduced into the electrolyte in the form of the acids, the salts or the acid anhydrides.
a preferred embodiment of the invention provides to carry out the zinc plating with an electrolytic solution, sulphurous as oxygen acid of sulfur acid (H 2 S0 3; Oxid.-number 4), sulfoxylic acid (H 2 SO 2; Oxid. number 2), dithionous Contains acid (H 2 S 2 O 4 ; oxide number 3) and / or thiosulfuric acid (H 2 S 2 0 3 ; oxide number 2) or salts or anhydrides thereof.
concentration of the sulfuric oxygen acids in the electrolyte is also advantageous to adjust the concentration of the sulfuric oxygen acids in the electrolyte to a value between 0.05 and 10 g / 1, preferably between 0.1 and 2.0 g / 1.
concentration of the sulfuric oxygen acids in the electrolyte is also advantageous to adjust to a value between 0.05 and 10 g / 1, preferably between 0.1 and 2.0 g / 1.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Chemical Kinetics & Catalysis (AREA)
Electrochemistry (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Electroplating And Plating Baths Therefor (AREA)
Electroplating Methods And Accessories (AREA)
Chemical Treatment Of Metals (AREA)

EP84201280A 1983-09-28 1984-09-07 Procédé de zingage électrolytique d'acier Withdrawn EP0137540A3 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3335009		1983-09-28
DE19833335009 DE3335009A1 (de)	1983-09-28	1983-09-28	Verfahren zur elektrolytischen verzinkung von stahl

Publications (2)

Publication Number	Publication Date
EP0137540A2 true EP0137540A2 (fr)	1985-04-17
EP0137540A3 EP0137540A3 (fr)	1987-05-27

Family

ID=6210222

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP84201280A Withdrawn EP0137540A3 (fr)	1983-09-28	1984-09-07	Procédé de zingage électrolytique d'acier

Country Status (5)

Country	Link
US (1)	US4547269A (fr)
EP (1)	EP0137540A3 (fr)
JP (1)	JPS6092495A (fr)
DE (1)	DE3335009A1 (fr)
ES (1)	ES8605872A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4663000A (en) *	1985-07-25	1987-05-05	Kollmorgan Technologies, Corp.	Process for electro-deposition of a ductile strongly adhesive zinc coating for metals
IL75974A0 (en) *	1984-08-16	1985-12-31	Kollmorgen Tech Corp	Electrodeposition composition and process for providing a zn/si/p coating on metal substrates
JPS6360290A (ja) *	1986-09-01	1988-03-16	Nippon Parkerizing Co Ltd	アルミニウム又はその合金材料の黒色化処理液および処理方法
EP1629147B1 (fr) *	2003-06-05	2007-07-18	LG Electronics Inc.	Tambour pour machine a laver ou seche linge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1017981A (en) *	1911-05-29	1912-02-20	Auguste Arsene Lemetre	Electroplating with zinc.
US1380142A (en) *	1919-11-17	1921-05-31	Eastern Mfg Company	Plating-bath
US1607869A (en) *	1925-06-01	1926-11-23	Us Smelting Refining & Mining	Electrolytic refining of metals
US3637475A (en) *	1968-09-23	1972-01-25	Mini Ind Constructillor	Zinc-plating bath for bright or glossy coating
US3713092A (en) *	1970-10-23	1973-01-23	B Ivenbaum	Air pressure balanced self-contained tire pressure condition signal transmitter
US3850766A (en) *	1974-03-28	1974-11-26	Sterwin Chem Inc	Electroplating brightener compositions and process
SU905335A1 (ru) *	1980-03-03	1982-02-15	За витель Кравцов, Л. Г. Осацкий, В. И. Фоменко, П. В, Топстов, Т. С. Кондратенко и Р. К. Умбвталивва	Электролит цинковани

1983
- 1983-09-28 DE DE19833335009 patent/DE3335009A1/de not_active Withdrawn
1984
- 1984-09-07 EP EP84201280A patent/EP0137540A3/fr not_active Withdrawn
- 1984-09-12 ES ES535855A patent/ES8605872A1/es not_active Expired
- 1984-09-21 US US06/653,504 patent/US4547269A/en not_active Expired - Fee Related
- 1984-09-28 JP JP59203970A patent/JPS6092495A/ja active Pending

Also Published As

Publication number	Publication date
DE3335009A1 (de)	1985-04-18
ES535855A0 (es)	1985-12-16
EP0137540A3 (fr)	1987-05-27
US4547269A (en)	1985-10-15
ES8605872A1 (es)	1985-12-16
JPS6092495A (ja)	1985-05-24

Legal Events

Date	Code	Title	Description
1985-02-16	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
1985-04-17	AK	Designated contracting states	Designated state(s): AT BE DE FR GB IT LU NL SE
1985-08-07	RTI1	Title (correction)
1987-04-07	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1987-05-27	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE DE FR GB IT LU NL SE
1987-07-20	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN
1987-09-09	18W	Application withdrawn	Withdrawal date: 19870711
2007-08-08	RIN1	Information on inventor provided before grant (corrected)	Inventor name: RAUSCH, WERNER, DR. Inventor name: MUELLER, GERHARD

Publication	Publication Date	Title
DE69737195T2 (de)	2007-04-26	Lösung und Verfahren zur Herstellung von Schutzschichten auf Metallen
DE3118375C2 (fr)	1989-06-15
EP0304108B1 (fr)	1992-05-13	Procédé de phosphatation de métaux
EP0056881B1 (fr)	1986-02-12	Procédé pour la phosphatation de métaux
DE3234558C2 (fr)	1989-02-09
DE3650659T2 (de)	1998-07-02	Verfahren zur Phosphatierung von Metalloberflächen
DE3500443A1 (de)	1986-09-11	Verfahren zur verbesserung des korrosionsschutzes autophoretisch abgeschiedener harzschichten auf metalloberflaechen
EP0261704B1 (fr)	1991-01-23	Procédé pour produire des revêtements de phosphate sur des surfaces métalliques
EP0069950B1 (fr)	1985-10-23	Procédé de phosphatation de surfaces métalliques
EP0578670A1 (fr)	1994-01-19	Procede de phosphatation de surfaces metalliques.
EP0039093B1 (fr)	1983-11-16	Procédé de phosphatation des surfaces de métaux et application de ce procédé
EP0361375A1 (fr)	1990-04-04	Procédé de production de revêtements
DE3875459T2 (de)	1993-03-25	Verfahren zum phosphatieren von metalloberflaechen.
DE3244715A1 (de)	1984-06-07	Verfahren zur phosphatierung von metalloberflaechen sowie hierfuer geeignete badloesungen
DE2137551A1 (de)	1973-02-08	Vorbehandlung von stahlblechen, die im anschluss an eine formgebung mit einer beschichtung versehen werden
EP0137540A2 (fr)	1985-04-17	Procédé de zingage électrolytique d'acier
EP0258922A1 (fr)	1988-03-09	Procédé pour produire des revêtements de phosphate et leur utilisation
DE4232292A1 (de)	1994-03-31	Verfahren zum Phosphatieren von verzinkten Stahloberflächen
DE3233508C2 (de)	1989-05-24	Verfahren zur herstellung von mit zinn und zink beschichtetem stahlblech
DE2134412B2 (de)	1980-12-11	Chromatbehandeltes Metallblech und Verfahren zu dessen Herstellung
EP0127204B1 (fr)	1988-01-13	Procédé de phosphatation de métaux composites
DE1082095B (de)	1960-05-19	Verfahren und Loesung zum Reinigen von metallischen Oberflaechen unter gleichzeitiger Bildung eines Phosphatueberzuges im Spritzverfahren
DE1621096C3 (de)	1975-10-23	Wäßriges, im wesentlichen sechswertige Chromionen enthaltendes Bad und Verfahren zur kathodischen Bildung von korroslonsreslstenten Schichten auf Metalloberflächen
DE1521096A1 (de)	1970-08-20	Verfahren zur chemischen Behandlung von Metallen
DE1621130C3 (fr)	1975-01-16