EP0462646A1 - Bäder und Verfahren zum chemischen Polieren von Oberflächen aus rostfreiem Stahl - Google Patents
Bäder und Verfahren zum chemischen Polieren von Oberflächen aus rostfreiem Stahl Download PDFInfo
- Publication number
- EP0462646A1 EP0462646A1 EP91201422A EP91201422A EP0462646A1 EP 0462646 A1 EP0462646 A1 EP 0462646A1 EP 91201422 A EP91201422 A EP 91201422A EP 91201422 A EP91201422 A EP 91201422A EP 0462646 A1 EP0462646 A1 EP 0462646A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mole
- acid
- polishing
- baths
- acide
- 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.)
- Granted
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 87
- 239000000126 substance Substances 0.000 title claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 14
- 239000010935 stainless steel Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 46
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 44
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007864 aqueous solution Substances 0.000 claims abstract description 18
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 17
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 16
- 150000001412 amines Chemical class 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 150000005165 hydroxybenzoic acids Chemical class 0.000 claims abstract description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 36
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 15
- 239000000654 additive Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- -1 ferricyanide ions Chemical class 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 2
- 150000003141 primary amines Chemical class 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 1
- 150000003672 ureas Chemical class 0.000 claims 1
- 238000007654 immersion Methods 0.000 description 26
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 26
- 235000011007 phosphoric acid Nutrition 0.000 description 14
- 229960004889 salicylic acid Drugs 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- PLZVEHJLHYMBBY-UHFFFAOYSA-N Tetradecylamine Chemical compound CCCCCCCCCCCCCCN PLZVEHJLHYMBBY-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 2
- OOHAUGDGCWURIT-UHFFFAOYSA-N n,n-dipentylpentan-1-amine Chemical compound CCCCCN(CCCCC)CCCCC OOHAUGDGCWURIT-UHFFFAOYSA-N 0.000 description 2
- PXSXRABJBXYMFT-UHFFFAOYSA-N n-hexylhexan-1-amine Chemical compound CCCCCCNCCCCCC PXSXRABJBXYMFT-UHFFFAOYSA-N 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 125000001539 acetonyl group Chemical group [H]C([H])([H])C(=O)C([H])([H])* 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- ABVVEAHYODGCLZ-UHFFFAOYSA-N tridecan-1-amine Chemical compound CCCCCCCCCCCCCN ABVVEAHYODGCLZ-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 230000004580 weight loss 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
Definitions
- the present invention relates to the composition of baths for the chemical polishing of stainless steel surfaces.
- Chemical polishing of metal surfaces is a well-known technique (electrolytic and chemical polishing of metals - W.J. Mc G. TEGART - Dunod - 1960 - p. 122 et seq.); it consists of treating the metal surfaces to be polished with oxidizing baths.
- baths are generally used comprising a mixture, in aqueous solution, of hydrochloric, phosphoric and nitric acids (patent US-A-2662814).
- suitable additives such as surfactants, viscosity regulators and brighteners.
- a composition of a bath for the chemical polishing of stainless steel surfaces comprising, in aqueous solution, a mixture of hydrochloric acid, nitric acid and acid.
- phosphoric a viscosity regulator chosen from water-soluble polymers, a surfactant and sulfosalicylic acid as a brightening agent.
- the invention aims to provide baths designed to carry out slow and effective chemical polishing of stainless steel surfaces, at working temperatures below 50 ° C.
- the invention therefore relates to baths for the chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, nitric acid and phosphoric acid, an optionally substituted hydroxybenzoic acid and an amine. water soluble.
- hydroxybenzoic acid serves as a brightening agent. It can be unsubstituted such as salicylic acid or substituted such as sulfosalicylic acid. Salicylic acid is preferred.
- the amine can be selected from primary amines, secondary amines and tertiary amines. Amines are preferred, the molecule of which comprises more than 10 carbon atoms, for example between 11 and 20 carbon atoms. Primary alkylamines having 11 to 16 carbon atoms in their molecule are preferred.
- the baths according to the invention can comprise a mixture of amines. Optimal amine content depends on the nature of the amine selected. Typically, it is between 0.001 and 1 g per liter of the aqueous solution.
- the aqueous solution of the bath comprises, in addition to the amine, an additive selected from perchloric acid and the water-soluble salts of perchloric acid.
- the optimum content of this additive is between 0.001 and 0.5 mole per liter of the aqueous solution.
- the aqueous solution contains a water-soluble additive capable of breaking down nitrous acid.
- the function of this additive is to decompose at least part of the nitrous acid which forms during the polishing of a steel surface, as a consequence of oxidation of ferrous ions released in the bath during polishing. It is preferably selected from urea and its derivatives, such as thiourea and ureines, and its optimum content is between 0.01 and 5 g per liter of the aqueous solution.
- the baths in accordance with this embodiment of the invention are specially adapted for polishing treatments in which the ratio between the surface in contact with the bath and the volume thereof is greater than 10 m ⁇ 1.
- the baths according to the invention are free from ferricyanide ions and ferrocyanide ions, especially when they do not contain perchloric acid.
- the polishing baths according to the invention may optionally contain additives usually present in baths known for the chemical polishing of metals, for example surfactants, alcohols and viscosity regulators. They can in particular comprise a water-soluble abietic compound which is a chemical compound comprising an abietyl radical of general formula: or a hydroabietyl or dehydroabietyl radical.
- the abietic compound must be soluble in the aqueous solution.
- Abietic compounds which can be used in the baths according to the invention are abietamines.
- abietamines which are very suitable in the baths according to the invention, are those in which at least one of the radicals X1 and X2 is a radical of general formula: -CH2-R2 wherein R2 denotes a linear or cyclic alkyl radical, substituted or unsubstituted, saturated or unsaturated, comprising at least one carbonyl group.
- R2 denotes a linear or cyclic alkyl radical, substituted or unsubstituted, saturated or unsaturated, comprising at least one carbonyl group.
- substituted abietamines and the means of obtaining them are described in GB-A-734665.
- abietamines of this type which can be used in the baths according to the invention, are those in which the alkyl radical R2 is selected from acetonyl, 2-keto butyl, 4-methyl 2-keto-pentenyl-3, 4- radicals. hydroxy 4-methyl 2-keto pentyl, 2-keto cyclopentyl, 4-hydroxy 2-keto pentenyl-3, 2-keto cyclohexyl, 2,5-diketo hexyl and 2-phenyl 2-keto ethyl.
- the baths according to the invention may also contain products of the DEHYQUART brand (Henkel), which are surfactants selected from alkylpyridinium salts and quaternary ammonium salts, comprising alkyl, phenyl or benzyl radicals, substituted or not substituted.
- DEHYQUART brand Henkel
- surfactants selected from alkylpyridinium salts and quaternary ammonium salts, comprising alkyl, phenyl or benzyl radicals, substituted or not substituted.
- the baths according to the invention are suitable for polishing chemical of all surfaces in austenitic stainless steel. They are specially suitable for polishing austenitic steels containing between 16 and 26% by weight of chromium and between 6 and 22% by weight of nickel, such as steels of grades 18/8 and 18/10, optionally containing molybdenum (for example example AISI-304, 304L, 316 and 316L steels).
- the baths according to the invention have the particularity of carrying out the polishing of such steels at slow speed, generally requiring a contact time of between 3 and 12 hours. They can be used at all temperatures between 20 ° C and the boiling temperature.
- the baths according to the invention have the additional advantage of performing good quality polishing of welded assemblies according to the rules of the art.
- the invention also relates to a method for polishing a stainless steel surface, according to which the surface is brought into contact with a chemical polishing bath according to the invention.
- the contacting of the metal surface with the bath can be carried out in any suitable manner, for example by immersion.
- the contact time of the surface to be polished with the bath must be sufficient to achieve effective polishing of the surface. However, it cannot exceed a critical value beyond which the bath loses its polishing properties.
- the optimum contact time depends on many parameters such as the grade of steel, the configuration and the initial roughness of the surface to be polished, the composition of the bath, the working temperature, the agitation of the bath in contact with the surface. , the ratio between the area of the surface to be polished and the volume of the bath; it must be determined in each particular case by routine work in the laboratory.
- the bath is carried out at a temperature between 20 and 65 ° C, preferably between 35 and 50 ° C, at normal atmospheric pressure, and the surface to be polished in contact with the bath for a time between 5 and 12 hours.
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)
- ing And Chemical Polishing (AREA)
- Chemical Treatment Of Metals (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9000625 | 1990-06-19 | ||
| BE9000625A BE1004452A3 (fr) | 1990-06-19 | 1990-06-19 | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0462646A1 true EP0462646A1 (de) | 1991-12-27 |
| EP0462646B1 EP0462646B1 (de) | 1994-07-20 |
Family
ID=3884837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91201422A Expired - Lifetime EP0462646B1 (de) | 1990-06-19 | 1991-06-10 | Bäder und Verfahren zum chemischen Polieren von Oberflächen aus rostfreiem Stahl |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US5209820A (de) |
| EP (1) | EP0462646B1 (de) |
| JP (1) | JPH04231483A (de) |
| CN (1) | CN1057494A (de) |
| AT (1) | ATE108838T1 (de) |
| BE (1) | BE1004452A3 (de) |
| BG (1) | BG60922B1 (de) |
| BR (1) | BR9102496A (de) |
| CA (1) | CA2044113A1 (de) |
| CZ (1) | CZ280639B6 (de) |
| DE (1) | DE69102947T2 (de) |
| ES (1) | ES2060286T3 (de) |
| HU (1) | HU209843B (de) |
| MY (1) | MY106562A (de) |
| PL (1) | PL168604B1 (de) |
| PT (1) | PT97999A (de) |
| RU (1) | RU2086700C1 (de) |
| YU (1) | YU47856B (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1012670A3 (fr) * | 1999-05-07 | 2001-02-06 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1003670A3 (fr) * | 1990-02-23 | 1992-05-19 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
| KR100525031B1 (ko) * | 1999-07-13 | 2005-10-31 | 카오카부시키가이샤 | 연마액 조성물 |
| JP4578661B2 (ja) * | 2000-09-28 | 2010-11-10 | 日本表面化学株式会社 | 金及び金合金の化学研磨処理液 |
| CN102703937A (zh) * | 2012-05-24 | 2012-10-03 | 北京工业大学 | 一种涂层导体用不锈钢基带的抛光工艺 |
| CN103046053B (zh) * | 2012-09-21 | 2015-04-01 | 中国兵器工业第二一三研究所 | 高温氧化不锈钢的化学抛光方法 |
| CN102888609A (zh) * | 2012-10-26 | 2013-01-23 | 南京大地冷冻食品有限公司 | 一种不锈钢化学抛光液 |
| CN103422092B (zh) * | 2013-07-19 | 2015-12-02 | 吴江骏达电梯部件有限公司 | 一种抛光液及其抛光方法 |
| CN103642398B (zh) * | 2013-11-28 | 2015-07-22 | 上海航天精密机械研究所 | 不锈钢材料抛光液及其用途 |
| US10428429B2 (en) * | 2014-09-30 | 2019-10-01 | Agency For Science, Technology And Research | Formulation and method for inhibiting carbon-based deposits |
| CN104498870A (zh) * | 2014-12-11 | 2015-04-08 | 沈阳富创精密设备有限公司 | 一种带螺纹不锈钢零件多弧离子镀镀铝前处理工艺及应用 |
| EP3878579A1 (de) * | 2020-03-09 | 2021-09-15 | Acondicionamiento Tarrasense | Verfahren zur endbearbeitung von edelstahlteilen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3709824A (en) * | 1971-01-07 | 1973-01-09 | Nippon Soda Co | Method and composition for chemical polishing of stainless steel surfaces |
| US3839112A (en) * | 1973-04-16 | 1974-10-01 | Texas Instruments Inc | Temperature stable compositions and processes for brightening metals and alloys |
| EP0206386A1 (de) * | 1985-06-03 | 1986-12-30 | SOLVAY & Cie (Société Anonyme) | Lösungen und Verfahren zum chemischen Polieren von Oberflächen von rostfreien Stahlen |
| EP0274776A1 (de) * | 1986-12-15 | 1988-07-20 | Solvay | Bäder und Verfahren zum chemischen Polieren von rostfreien Stahloberflächen |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2662814A (en) * | 1949-08-27 | 1953-12-15 | Diversey Corp | Method and composition for chemically polishing metals |
| GB734665A (en) * | 1953-06-10 | 1955-08-03 | American Chem Paint Co | Improvements in or relating to corrosion inhibitors and their use |
| LU38281A1 (de) * | 1959-03-09 | |||
| US3457107A (en) * | 1965-07-20 | 1969-07-22 | Diversey Corp | Method and composition for chemically polishing metals |
| JPS4893542A (de) * | 1972-03-13 | 1973-12-04 | ||
| FR2457315A1 (fr) * | 1979-05-25 | 1980-12-19 | Solvay | Bain pour le polissage chimique de surfaces en acier |
| JPS5642673A (en) * | 1979-09-14 | 1981-04-20 | Usac Electronics Ind Co Ltd | Printer for electronic computer |
| SU1105292A1 (ru) * | 1982-07-30 | 1984-07-30 | Московский ордена Ленина и ордена Трудового Красного Знамени химико-технологический институт им.Д.И.Менделеева | Раствор дл удалени никелевых покрытий,нанесенных химическим способом |
-
1990
- 1990-06-19 BE BE9000625A patent/BE1004452A3/fr not_active IP Right Cessation
-
1991
- 1991-06-07 CA CA002044113A patent/CA2044113A1/fr not_active Abandoned
- 1991-06-10 EP EP91201422A patent/EP0462646B1/de not_active Expired - Lifetime
- 1991-06-10 US US07/712,961 patent/US5209820A/en not_active Expired - Fee Related
- 1991-06-10 DE DE69102947T patent/DE69102947T2/de not_active Expired - Fee Related
- 1991-06-10 AT AT91201422T patent/ATE108838T1/de not_active IP Right Cessation
- 1991-06-10 ES ES91201422T patent/ES2060286T3/es not_active Expired - Lifetime
- 1991-06-12 YU YU104991A patent/YU47856B/sh unknown
- 1991-06-14 MY MYPI91001076A patent/MY106562A/en unknown
- 1991-06-14 CZ CS911841A patent/CZ280639B6/cs unknown
- 1991-06-17 PT PT97999A patent/PT97999A/pt not_active Application Discontinuation
- 1991-06-17 BR BR919102496A patent/BR9102496A/pt unknown
- 1991-06-18 RU SU914895690A patent/RU2086700C1/ru active
- 1991-06-18 BG BG94644A patent/BG60922B1/bg unknown
- 1991-06-18 HU HU912030A patent/HU209843B/hu not_active IP Right Cessation
- 1991-06-19 JP JP3147322A patent/JPH04231483A/ja active Pending
- 1991-06-19 PL PL91290742A patent/PL168604B1/pl unknown
- 1991-06-19 CN CN91104335A patent/CN1057494A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3709824A (en) * | 1971-01-07 | 1973-01-09 | Nippon Soda Co | Method and composition for chemical polishing of stainless steel surfaces |
| US3839112A (en) * | 1973-04-16 | 1974-10-01 | Texas Instruments Inc | Temperature stable compositions and processes for brightening metals and alloys |
| EP0206386A1 (de) * | 1985-06-03 | 1986-12-30 | SOLVAY & Cie (Société Anonyme) | Lösungen und Verfahren zum chemischen Polieren von Oberflächen von rostfreien Stahlen |
| EP0274776A1 (de) * | 1986-12-15 | 1988-07-20 | Solvay | Bäder und Verfahren zum chemischen Polieren von rostfreien Stahloberflächen |
Non-Patent Citations (2)
| Title |
|---|
| METALLOBERFLÄCHE, vol. 14, no. 1, janvier 1960, pages 1-6; G. SCHMID et al.: "Entwicklung und Untersuchung eines Säurebades zum chemischen Glänzen von V2A-Stahl" * |
| SOVIET INVENTIONS ILLUSTRATED, section CH, semaine 8507, 27 mars 1989, résumé no. 85-043610/07, Derwent Publications Ltd, Londres, GB; & SU-A-1105 292 (MOSCOW MENDELEEV CHEM. IND.) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1012670A3 (fr) * | 1999-05-07 | 2001-02-06 | Solvay | Bains et procede pour le polissage chimique de surfaces en acier inoxydable. |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69102947D1 (de) | 1994-08-25 |
| JPH04231483A (ja) | 1992-08-20 |
| CZ280639B6 (cs) | 1996-03-13 |
| HU912030D0 (en) | 1991-12-30 |
| HUT61608A (en) | 1993-01-28 |
| BG94644A (bg) | 1993-12-24 |
| RU2086700C1 (ru) | 1997-08-10 |
| US5209820A (en) | 1993-05-11 |
| ATE108838T1 (de) | 1994-08-15 |
| HU209843B (en) | 1994-11-28 |
| YU104991A (sh) | 1994-04-05 |
| ES2060286T3 (es) | 1994-11-16 |
| BR9102496A (pt) | 1992-01-21 |
| EP0462646B1 (de) | 1994-07-20 |
| PL168604B1 (pl) | 1996-03-29 |
| BE1004452A3 (fr) | 1992-11-24 |
| PT97999A (pt) | 1992-03-31 |
| MY106562A (en) | 1995-06-30 |
| CN1057494A (zh) | 1992-01-01 |
| YU47856B (sh) | 1996-02-19 |
| CA2044113A1 (fr) | 1991-12-20 |
| CS184191A3 (en) | 1992-02-19 |
| DE69102947T2 (de) | 1995-02-23 |
| BG60922B1 (bg) | 1996-06-28 |
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