EP0442775B1 - Procédé de décapage de matériaux en acier, notamment en acier inoxydable - Google Patents
Procédé de décapage de matériaux en acier, notamment en acier inoxydable Download PDFInfo
- Publication number
- EP0442775B1 EP0442775B1 EP91400252A EP91400252A EP0442775B1 EP 0442775 B1 EP0442775 B1 EP 0442775B1 EP 91400252 A EP91400252 A EP 91400252A EP 91400252 A EP91400252 A EP 91400252A EP 0442775 B1 EP0442775 B1 EP 0442775B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accordance
- solution
- pickling
- peracid
- ratio
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 238000005554 pickling Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 title claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 15
- 239000010935 stainless steel Substances 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 title abstract description 6
- 239000010959 steel Substances 0.000 title abstract description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 31
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000243 solution Substances 0.000 claims abstract description 27
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910001447 ferric ion Inorganic materials 0.000 claims abstract description 26
- 150000007524 organic acids Chemical class 0.000 claims abstract description 12
- 229910001448 ferrous ion Inorganic materials 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 19
- KRHYYFGTRYWZRS-UHFFFAOYSA-N hydrofluoric acid Substances F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 12
- 150000004965 peroxy acids Chemical class 0.000 claims description 9
- -1 Fe3+ ions Chemical class 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 150000001451 organic peroxides Chemical class 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 4
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 claims description 4
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical group [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 3
- DSJNICGAALCLRF-UHFFFAOYSA-L magnesium;oxidooxy(oxo)borane Chemical compound [Mg+2].[O-]OB=O.[O-]OB=O DSJNICGAALCLRF-UHFFFAOYSA-L 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 229940045872 sodium percarbonate Drugs 0.000 claims description 3
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical group OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 claims description 3
- 150000001559 benzoic acids Chemical class 0.000 claims 2
- 150000005209 naphthoic acids Chemical class 0.000 claims 2
- 150000003022 phthalic acids Chemical class 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 9
- 150000002500 ions Chemical class 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 5
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 150000002826 nitrites Chemical class 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric Acid Chemical compound [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- LNETULKMXZVUST-UHFFFAOYSA-N 1-naphthoic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1 LNETULKMXZVUST-UHFFFAOYSA-N 0.000 description 1
- GLVYLTSKTCWWJR-UHFFFAOYSA-N 2-carbonoperoxoylbenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1C(O)=O GLVYLTSKTCWWJR-UHFFFAOYSA-N 0.000 description 1
- YNJSNEKCXVFDKW-UHFFFAOYSA-N 3-(5-amino-1h-indol-3-yl)-2-azaniumylpropanoate Chemical compound C1=C(N)C=C2C(CC(N)C(O)=O)=CNC2=C1 YNJSNEKCXVFDKW-UHFFFAOYSA-N 0.000 description 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- MMCOUVMKNAHQOY-UHFFFAOYSA-N carbonoperoxoic acid Chemical compound OOC(O)=O MMCOUVMKNAHQOY-UHFFFAOYSA-N 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 150000004005 nitrosamines Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
Definitions
- the invention relates to a method for pickling metallic materials of stainless steel.
- the pickling process can be implemented on metallic stainless steel materials in an industrial environment, before leaving the factory, for example for descaling but also by non-professionals in metallurgy for cleaning stainless steel elements. .
- the pickling operation consists of immersing the materials in pickling baths composed of nitric acid and hydrofluoric acid in a proportion of 6 to 16% of HNO3 per liter and 1 at 5% HF per liter, the temperature of use of the baths being between 40 ° C and 60 ° C.
- nitric acid leads to the release of particularly toxic oxide or nitrogen dioxide vapors, and to the release of nitro compounds such as nitrites and nitrates in the effluents. If the maximum authorized content of nitrates is relatively high, that relating to nitrites is much lower because nitrites lead to the formation of harmful nitrosamines.
- FR-A-2 587 369 further describes a process for pickling stainless steel materials in which a pickling bath composed of hydrofluoric acid, dissolved ferric iron is used, the balance being water.
- the bath is used at a temperature between 15 and 70 ° C.
- the ferric iron content of the bath is maintained by means of an injection of air, or by circulation in the open air.
- hydrofluoric acid-based process has the drawback that, since hydrofluoric acid can be dangerous to handle, it cannot be suitable for all cleaning operations by spraying or spraying metallic elements such as, for example, a tank or a tank.
- Document JP-A-7547826 also discloses a process for pickling metallic materials made of stainless steel, consisting in the use of a bath composed of a mixture of halogenated acids containing in a determined proportion of hydrochloric acid.
- FR-A-2 551 465 describes a process for pickling stainless steel with a complexing acid Fe3+ which can be hydrofluoric acid or an organic acid such as tartaric or oxalic acid, with the addition of hydrogen peroxide to oxidize ferrous iron to ferric iron.
- a complexing acid Fe3+ which can be hydrofluoric acid or an organic acid such as tartaric or oxalic acid, with the addition of hydrogen peroxide to oxidize ferrous iron to ferric iron.
- the Fe2+ / Fe3+ ratio is not regulated.
- GB-A-200 1976 describes a process for pickling steel by acid attack with a solution of hydrofluoric acid and ferric sulfate, with the addition of a combination of hydrogen peroxide and sulfuric acid depending on the potential redox for quality control of pickling.
- the object of the invention is to propose a non-polluting process which can be used in the metallurgy industry as well as by non-metallurgical professionals.
- the inventors of the present invention have discovered that the pickling of metallic steel materials, in particular stainless steel could be carried out without the need to use an oxidizing corrosive acid such as HF or HCl, by oxidation bar a mixture Fe2+ / Fe3+, the redox potential of which is maintained between determined values, the ions Fe2+ and Fe3+ being maintained in aqueous solution by an organic acid presenting no danger to humans during its use.
- an oxidizing corrosive acid such as HF or HCl
- the invention relates to a process for pickling stainless steel materials, characterized in that the materials are treated with an aqueous solution devoid of nitric, hydrofluoric and hydrochloric acid and containing ferrous and ferric ions as well as '' an organic acid chosen from formic, acetic, propionic, butanoic, lactic, benzoic, phthalic and naphthoic acid in an amount sufficient to maintain in solution the ions Fe2+ and Fe3+, the ferrous and ferric ions being present in the solution in a Fe2+ / Fe3+ ratio between 10/90 and 40/60, and in that the Fe2+ / Fe3+ ratio is maintained within the defined range by addition of hydrogen peroxide.
- an organic acid chosen from formic, acetic, propionic, butanoic, lactic, benzoic, phthalic and naphthoic acid
- the acid in the solution by a secondary reaction, during pickling, will give either easily recyclable salts in an industrial environment, or non-toxic salts so that the process can be used easily and without danger.
- the ratio and therefore the reaction kinetics are maintained by regenerating the Fe3+ ion by the addition of hydrogen peroxide.
- the peracid is advantageously chosen from perboric, peracetic, percarbonic, perbenzoic, persulfuric, perphosphoric, periodic and perphthalic acids.
- the persalt is advantageously chosen from sodium percarbonate and magnesium perborate and the organic peroxide is preferably urea peroxide.
- the process implementation temperature is advantageously between 10 and 90 ° C.
- the invention also relates to a pickling product for stainless steel materials, characterized in that it comprises on the one hand a solution devoid of nitric, hydrofluoric and hydrochloric acid and containing ferrous ions and ferric ions, the Fe++ / Fe+++ ratio being between 10/90 and 40/60, as well as an amount sufficient to keep in solution the Fe2+ and Fe3+ ions of an organic acid chosen from formic, acetic acid , propionic, butanoic, lactic, benzoic, phthalic and naphthoic, and on the other hand a source of hydrogen peroxide intended to be added to the solution to maintain the ratio Fe2+ / Fe3 rapport in the defined interval.
- a pickling product for stainless steel materials characterized in that it comprises on the one hand a solution devoid of nitric, hydrofluoric and hydrochloric acid and containing ferrous ions and ferric ions, the Fe++ / Fe+++ ratio being between 10/90 and 40/60, as well as
- the organic acid and the source of hydrogen peroxide are as defined above.
- the pickling and cleaning product can be transported without special packaging to the place of its use, and can be used without any particular precaution anywhere, including for pickling closed containers such as tanks, fixed or mobile tanks, or containers.
- the method according to the invention can be used for the pickling of metallic stainless steel materials and in particular for descaling, polishing and cleaning of said materials, the treatment being able to be carried out in a bath, by spraying or spraying.
- organic acids are that they decompose into CO2, H2O and H2, decomposition residues which do not harm the ecological environment when they are released into the atmosphere, in effluents or even at sea.
- Another advantage is that the organic medium allows the formation of a passive film reducing the corrosion of the metal.
- the pickling solution used in the invention avoids the redeposition of certain metals, such as Cu, Ni, Cr, Sn, Zn during pickling, this thanks to the high value of the redox potential of the solution.
- the formation of the Fe3+ ion is controlled by measuring the redox potential of the pickling bath.
- the redox potential or REDOX is the potential difference measured between a non-corrodable electrode (for example made of platinum) and a reference electrode / (for example Hg / HgCl or saturated calomel), these two electrodes being immersed in the pickling solution.
- the measured value makes it possible, on the one hand to characterize the oxidizing power of the pickling bath and on the other hand, to readjust the bath by the introduction of H2O2 or of the compound capable of supplying H2O2.
- the source of H2O2 introduced into the basic pickling solution can be the peracid homologous to the acid of the solution, which has the advantage of not modifying the initial composition of the solution.
- organic acid / peracid pairs which can be used for implementing the process can be the following: acetic acid / peracetic acid, benzoic acid / perbenzoic acid, phthalic acid / perphthalic acid.
- H2O2 an organic oxidizing agent such as percarbonic acid (H4 (CO3) 2, 3H2O2) or even peroxide.
- urea CO (NH2) 2, H2O2 which breaks down into CO2, H2O and N2.
- the advantages of the process also reside in the fact that the oxidant is created "in situ" without the addition of toxic or polluting substances and without the effluents and used acid solutions being a danger for humans. Also the product according to the invention comprising the acid solution and its liquid or solid oxidant, can be used in all environments, even in confined environments.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
- Detergent Compositions (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9001481A FR2657888B1 (fr) | 1990-02-08 | 1990-02-08 | Procedes de decapage de materiaux en acier inoxydable. |
| FR9001481 | 1990-02-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0442775A1 EP0442775A1 (fr) | 1991-08-21 |
| EP0442775B1 true EP0442775B1 (fr) | 1995-04-26 |
Family
ID=9393510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91400252A Expired - Lifetime EP0442775B1 (fr) | 1990-02-08 | 1991-02-01 | Procédé de décapage de matériaux en acier, notamment en acier inoxydable |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5164016A (cs) |
| EP (1) | EP0442775B1 (cs) |
| JP (1) | JPH04218685A (cs) |
| KR (1) | KR100189579B1 (cs) |
| AT (1) | ATE121805T1 (cs) |
| CA (1) | CA2035847A1 (cs) |
| CZ (1) | CZ281613B6 (cs) |
| DE (1) | DE69109147T2 (cs) |
| ES (1) | ES2072560T3 (cs) |
| FI (1) | FI96519C (cs) |
| FR (1) | FR2657888B1 (cs) |
| NO (1) | NO303788B1 (cs) |
| RU (1) | RU2072397C1 (cs) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2673200A1 (fr) * | 1991-02-25 | 1992-08-28 | Ugine Aciers | Procede de surdecapage de materiaux en acier tels que les aciers inoxydables et les aciers allies. |
| US5244000A (en) * | 1991-11-13 | 1993-09-14 | Hughes Aircraft Company | Method and system for removing contaminants |
| IT1255655B (it) * | 1992-08-06 | 1995-11-09 | Processo di decapaggio e passivazione di acciaio inossidabile senza impiego di acido nitrico | |
| EP0776256B1 (en) * | 1994-09-26 | 2005-07-27 | Steris, Inc. | Stainless steel acid treatment |
| FR2745301B1 (fr) * | 1996-02-27 | 1998-04-03 | Usinor Sacilor | Procede de decapage d'une piece en acier et notamment d'une bande de tole en acier inoxydable |
| USH2087H1 (en) * | 1998-05-19 | 2003-11-04 | H. C. Starck, Inc. | Pickling of refractory metals |
| DE19833990A1 (de) * | 1998-07-29 | 2000-02-10 | Metallgesellschaft Ag | Beizmittel für Edelstähle |
| TW529041B (en) * | 2000-12-21 | 2003-04-21 | Toshiba Corp | Chemical decontamination method and treatment method and apparatus of chemical decontamination solution |
| KR20030090720A (ko) * | 2001-04-09 | 2003-11-28 | 에이케이 프로퍼티즈 인코포레이티드 | 폐 피클액로 부터 과산화수소를 제거하는 장치 및 방법 |
| ATE309397T1 (de) | 2001-04-09 | 2005-11-15 | Ak Steel Properties Inc | Wasserstoffperoxid-beizen von siliciumhaltigen elektrostrahlqualitäten |
| KR100681099B1 (ko) | 2001-04-09 | 2007-02-08 | 에이케이 스틸 프로퍼티즈 인코포레이티드 | 스테인레스강 그레이드에 대한 과산화수소 산세척 공정 |
| US7964085B1 (en) | 2002-11-25 | 2011-06-21 | Applied Materials, Inc. | Electrochemical removal of tantalum-containing materials |
| US20060105182A1 (en) * | 2004-11-16 | 2006-05-18 | Applied Materials, Inc. | Erosion resistant textured chamber surface |
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| US7910218B2 (en) * | 2003-10-22 | 2011-03-22 | Applied Materials, Inc. | Cleaning and refurbishing chamber components having metal coatings |
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| US8617672B2 (en) | 2005-07-13 | 2013-12-31 | Applied Materials, Inc. | Localized surface annealing of components for substrate processing chambers |
| US7762114B2 (en) | 2005-09-09 | 2010-07-27 | Applied Materials, Inc. | Flow-formed chamber component having a textured surface |
| US7981262B2 (en) | 2007-01-29 | 2011-07-19 | Applied Materials, Inc. | Process kit for substrate processing chamber |
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| CA2738724C (en) * | 2008-11-14 | 2013-04-23 | Ak Steel Properties, Inc. | Ferric pickling of silicon steel |
| JP2012180562A (ja) * | 2011-03-01 | 2012-09-20 | Yushiro Chemical Industry Co Ltd | さび除去剤水溶液 |
| US8734907B2 (en) | 2012-02-02 | 2014-05-27 | Sematech, Inc. | Coating of shield surfaces in deposition systems |
| US8734586B2 (en) | 2012-02-02 | 2014-05-27 | Sematech, Inc. | Process for cleaning shield surfaces in deposition systems |
| KR102013528B1 (ko) * | 2018-10-10 | 2019-10-21 | (주)스템코코리아 | 스테인레스강 세정용 조성물 및 이를 이용한 스테인레스강 세정 방법 |
| CN109440156A (zh) * | 2018-11-27 | 2019-03-08 | 广州三孚新材料科技股份有限公司 | 一种abs塑料的无铬粗化液及其使用方法 |
| KR102102608B1 (ko) * | 2019-12-20 | 2020-04-22 | 현대비앤지스틸 주식회사 | 고분자 연료전지 분리판용 스테인리스강 제조 방법 |
| CN114086181B (zh) * | 2021-10-19 | 2023-11-10 | 富联裕展科技(深圳)有限公司 | 蚀刻液以及制备铝合金工件的方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6703105A (cs) * | 1966-03-03 | 1967-09-04 | ||
| US3873362A (en) * | 1973-05-29 | 1975-03-25 | Halliburton Co | Process for cleaning radioactively contaminated metal surfaces |
| NO750215L (cs) * | 1974-02-27 | 1975-08-28 | Pfizer | |
| JPS549120A (en) * | 1977-06-24 | 1979-01-23 | Tokai Electro Chemical Co | Method of controlling acid cleaning liquid for stainless steel |
| BE871631A (fr) * | 1978-10-27 | 1979-04-27 | Centre Rech Metallurgique | Procede de decapage continu de toles en acier. |
| JPS5839234B2 (ja) * | 1981-10-26 | 1983-08-29 | 住友金属工業株式会社 | 鋼線材の酸洗脱スケ−ル方法 |
| BE891163A (fr) * | 1981-11-17 | 1982-05-17 | Centre Rech Metallurgique | Perfectionnements aux procedes de traitement de produits en acier |
| FR2551465B3 (fr) * | 1983-09-02 | 1985-08-23 | Gueugnon Sa Forges | Procede de decapage acide des aciers inoxydables et solution acide pour sa mise en oeuvre |
| FR2563824B1 (fr) * | 1984-05-04 | 1986-09-12 | Atochem | Stabilisation de solutions aqueuses acides contenant du peroxyde d'hydrogene et des ions metalliques |
-
1990
- 1990-02-08 FR FR9001481A patent/FR2657888B1/fr not_active Expired - Fee Related
-
1991
- 1991-02-01 DE DE69109147T patent/DE69109147T2/de not_active Expired - Fee Related
- 1991-02-01 EP EP91400252A patent/EP0442775B1/fr not_active Expired - Lifetime
- 1991-02-01 ES ES91400252T patent/ES2072560T3/es not_active Expired - Lifetime
- 1991-02-01 AT AT91400252T patent/ATE121805T1/de not_active IP Right Cessation
- 1991-02-05 US US07/649,839 patent/US5164016A/en not_active Expired - Fee Related
- 1991-02-05 KR KR1019910001972A patent/KR100189579B1/ko not_active Expired - Fee Related
- 1991-02-06 CA CA002035847A patent/CA2035847A1/en not_active Abandoned
- 1991-02-06 NO NO910448A patent/NO303788B1/no unknown
- 1991-02-07 FI FI910594A patent/FI96519C/fi active
- 1991-02-07 RU SU914894598A patent/RU2072397C1/ru active
- 1991-02-08 CZ CS91316A patent/CZ281613B6/cs not_active IP Right Cessation
- 1991-02-08 JP JP3039223A patent/JPH04218685A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR100189579B1 (ko) | 1999-06-01 |
| CZ281613B6 (cs) | 1996-11-13 |
| DE69109147D1 (de) | 1995-06-01 |
| ATE121805T1 (de) | 1995-05-15 |
| FI910594L (fi) | 1991-08-09 |
| KR910015721A (ko) | 1991-09-30 |
| NO910448L (no) | 1991-08-09 |
| ES2072560T3 (es) | 1995-07-16 |
| RU2072397C1 (ru) | 1997-01-27 |
| NO303788B1 (no) | 1998-08-31 |
| CA2035847A1 (en) | 1991-08-09 |
| FI96519B (fi) | 1996-03-29 |
| DE69109147T2 (de) | 1995-08-31 |
| US5164016A (en) | 1992-11-17 |
| FI96519C (fi) | 1996-07-10 |
| FR2657888B1 (fr) | 1994-04-15 |
| EP0442775A1 (fr) | 1991-08-21 |
| CS31691A3 (en) | 1992-04-15 |
| FI910594A0 (fi) | 1991-02-07 |
| FR2657888A1 (fr) | 1991-08-09 |
| NO910448D0 (no) | 1991-02-06 |
| JPH04218685A (ja) | 1992-08-10 |
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