EP0516653B1 - Bains et procede pour le polissage chimique de surfaces en acier inoxydable - Google Patents

Bains et procede pour le polissage chimique de surfaces en acier inoxydable Download PDF

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Publication number
EP0516653B1
EP0516653B1 EP91903566A EP91903566A EP0516653B1 EP 0516653 B1 EP0516653 B1 EP 0516653B1 EP 91903566 A EP91903566 A EP 91903566A EP 91903566 A EP91903566 A EP 91903566A EP 0516653 B1 EP0516653 B1 EP 0516653B1
Authority
EP
European Patent Office
Prior art keywords
acid
baths
quaternary ammonium
ammonium salt
polishing
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
Application number
EP91903566A
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German (de)
English (en)
French (fr)
Other versions
EP0516653A1 (fr
Inventor
François Dujardin
Marianne Reignier
Nathalie Barthelemy
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.)
Solvay SA
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Solvay SA
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Publication date
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Publication of EP0516653A1 publication Critical patent/EP0516653A1/fr
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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
    • 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 in 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 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, at least a quaternary ammonium salt and an additive selected from perchloric acid and the water-soluble salts of perchloric acid.
  • 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 quaternary ammonium salt is preferably selected from those which comprise at least one long-chain alkyl radical, substituted or unsubstituted, containing at least four carbon atoms. It is preferred to select quaternary ammonium salts in which the long-chain alkyl group contains at least 8 carbon atoms, preferably at least 12 carbon atoms, such as the lauryl, cetyl and stearyl, for example.
  • Specially recommended quaternary ammonium salts belong to the class formed from water-soluble alkylpyridinium salts and water-soluble quaternary ammonium salts comprising, in addition to the long-chain alkyl radical defined above, at least one other substituted or unsubstituted alkyl radical substituted and / or a substituted or unsubstituted benzyl radical.
  • Halides are preferred, especially chlorides.
  • quaternary ammonium salts which can be used in the baths according to the invention are cetyltrimethylammonium chloride, cetyldimethylbenzylammonium chloride, distearyl dimethylammonium chloride, lauryldimethylbenzylammonium chloride, lauryltrimethylammonium chloride and alkylpyridinium chlorides, in particular the cetylpyridinium chloride and laurylpyridinium chloride.
  • HENKEL DEHYQUART brand
  • the respective amounts of the quaternary ammonium salt, on the one hand, and of the additive selected from perchloric acid and its water-soluble salts, on the other hand, should be adjusted to make coadsorption possible on the surface of the steel to be polished, while avoiding exceeding their solubility product.
  • the baths according to the invention contain, per liter, between 0.005 and 1 g of the quaternary ammonium salt and between 0.001 and 0.5 mole of the additive selected from perchloric acid and its water-soluble salts.
  • 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 in which 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 residue R2 is selected from acetonyl, 2-keto butyl, 4-methyl 2-keto-pentenyl-3, 4- 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 are suitable for the chemical polishing of all austenitic stainless steel surfaces. 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 in grades 18/8 and 18/10, free of molybdenum (AISI steels -304 and 304L).
  • the baths according to the invention have the particularity of carrying out the polishing such steels at slow speed, generally requiring a contact time of between 5 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 the steel, the configuration and the initial roughness of the surface to be polished, the composition of the bath, the working temperature, the possible 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 laboratory work.
  • the bath is carried out at a temperature between 20 and 50 ° C, preferably between 35 and 45 ° C, at normal atmospheric pressure, and the surface to be polished in contact with the bath for a time between 5 and 12 hours.
  • the operating conditions were as follows: . bath volume 1940 cm3, . surface area subject to polishing 87 cm2, . temperature 35 ° C, . duration of immersion 12 hours 30 minutes.
  • the operating conditions were as follows: . bath volume 970 cc, . surface area subject to polishing 87 cm2, . temperature 35 ° C, . duration of immersion 5 hours 30 minutes.
  • the operating conditions were as follows: . bath volume 970 cc, . surface area subject to polishing 87 cm2, . temperature 35 ° C, . duration of immersion 6 hours.
  • the operating conditions were as follows: . bath volume 1940 cm3, . surface area subject to polishing 87 cm2, . temperature 35 ° C, . duration of immersion 6 hours, 30 minutes.

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)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Chemical Treatment Of Metals (AREA)
EP91903566A 1990-02-23 1991-02-18 Bains et procede pour le polissage chimique de surfaces en acier inoxydable Expired - Lifetime EP0516653B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9000210A BE1003670A3 (fr) 1990-02-23 1990-02-23 Bains et procede pour le polissage chimique de surfaces en acier inoxydable.
BE9000210 1990-02-23
PCT/BE1991/000010 WO1991013187A1 (fr) 1990-02-23 1991-02-18 Bains et procede pour le polissage chimique de surfaces en acier inoxydable

Publications (2)

Publication Number Publication Date
EP0516653A1 EP0516653A1 (fr) 1992-12-09
EP0516653B1 true EP0516653B1 (fr) 1994-09-21

Family

ID=3884686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91903566A Expired - Lifetime EP0516653B1 (fr) 1990-02-23 1991-02-18 Bains et procede pour le polissage chimique de surfaces en acier inoxydable

Country Status (22)

Country Link
US (1) US5599399A (bg)
EP (1) EP0516653B1 (bg)
JP (1) JPH05505423A (bg)
KR (1) KR100226881B1 (bg)
CN (1) CN1036080C (bg)
AT (1) ATE111971T1 (bg)
BE (1) BE1003670A3 (bg)
BG (1) BG60974B1 (bg)
BR (1) BR9106052A (bg)
CA (1) CA2076382A1 (bg)
CZ (1) CZ281338B6 (bg)
DE (1) DE69104190T2 (bg)
ES (1) ES2065001T3 (bg)
HR (2) HRP920973A2 (bg)
HU (1) HU212487B (bg)
MY (1) MY105439A (bg)
PL (1) PL165490B1 (bg)
PT (1) PT96851B (bg)
RU (1) RU2060301C1 (bg)
SG (1) SG20195G (bg)
WO (1) WO1991013187A1 (bg)
YU (1) YU47808B (bg)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1058303C (zh) * 1995-11-20 2000-11-08 高平 不锈钢设备动态电解复合抛光方法
JP2000158077A (ja) * 1998-11-20 2000-06-13 Nec Ibaraki Ltd ネジの鍛造方法及びそれに係るネジ転造工具
BE1012670A3 (fr) * 1999-05-07 2001-02-06 Solvay Bains et procede pour le polissage chimique de surfaces en acier inoxydable.
CN104213123A (zh) * 2014-09-22 2014-12-17 无锡贺邦金属制品有限公司 不锈钢材料抛光液及其制备方法
CN106119855B (zh) * 2016-08-17 2018-08-21 安徽红桥金属制造有限公司 一种不锈钢材料抛光剂的制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125475A (en) * 1964-03-17 Method of producing a bright finish
US2446060A (en) * 1944-07-04 1948-07-27 Battelle Development Corp Chemical polishing of metal surfaces
US3457107A (en) * 1965-07-20 1969-07-22 Diversey Corp Method and composition for chemically polishing metals
US3709824A (en) * 1971-01-07 1973-01-09 Nippon Soda Co Method and composition for chemical polishing of stainless steel surfaces
FR2457315A1 (fr) * 1979-05-25 1980-12-19 Solvay Bain pour le polissage chimique de surfaces en acier
SU1239172A1 (ru) * 1984-06-29 1986-06-23 Предприятие П/Я Г-4517 Раствор дл химического травлени нержавеющих сталей
US5135610A (en) * 1986-12-15 1992-08-04 Solvay & Cie Baths and process for chemical polishing of stainless steel surfaces
FR2608173B1 (fr) * 1986-12-15 1993-07-16 Solvay Bains et procede pour le polissage chimique de surfaces en acier inoxydable
BE1004452A3 (fr) * 1990-06-19 1992-11-24 Solvay Bains et procede pour le polissage chimique de surfaces en acier inoxydable.

Also Published As

Publication number Publication date
YU47808B (sr) 1996-01-09
DE69104190D1 (de) 1994-10-27
US5599399A (en) 1997-02-04
DE69104190T2 (de) 1995-05-04
JPH05505423A (ja) 1993-08-12
EP0516653A1 (fr) 1992-12-09
CZ281338B6 (cs) 1996-08-14
BR9106052A (pt) 1992-11-24
YU29991A (sh) 1993-11-16
ATE111971T1 (de) 1994-10-15
ES2065001T3 (es) 1995-02-01
MY105439A (en) 1994-10-31
BG60974B1 (en) 1996-07-31
WO1991013187A1 (fr) 1991-09-05
PT96851B (pt) 1998-07-31
HUT63467A (en) 1993-08-30
HU212487B (en) 1996-07-29
HRP920944B1 (en) 1999-10-31
PL165490B1 (pl) 1994-12-30
HRP920944A2 (hr) 1995-02-28
KR100226881B1 (ko) 1999-10-15
PT96851A (pt) 1991-10-31
CN1054276A (zh) 1991-09-04
CA2076382A1 (fr) 1991-08-24
KR920703874A (ko) 1992-12-18
CS9100478A2 (en) 1991-11-12
RU2060301C1 (ru) 1996-05-20
HRP920973A2 (en) 1995-04-30
SG20195G (en) 1995-08-18
BE1003670A3 (fr) 1992-05-19
CN1036080C (zh) 1997-10-08
BG96808A (bg) 1993-12-24

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