GB647782A - Improvements in or relating to the degreasing, pickling and passivation of metals - Google Patents

Improvements in or relating to the degreasing, pickling and passivation of metals

Info

Publication number
GB647782A
GB647782A GB16692/47A GB1669247A GB647782A GB 647782 A GB647782 A GB 647782A GB 16692/47 A GB16692/47 A GB 16692/47A GB 1669247 A GB1669247 A GB 1669247A GB 647782 A GB647782 A GB 647782A
Authority
GB
United Kingdom
Prior art keywords
triethanolamine
composition
organic solvent
water
chromium
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
Application number
GB16692/47A
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB647782A publication Critical patent/GB647782A/en
Expired legal-status Critical Current

Links

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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
    • C23C22/08—Orthophosphates

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)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Metallic surfaces are degreased, pickled and passivated by treating them with or within a composition comprising water, an organic solvent miscible with water and having a rather weak degreasing power and (a) a double phosphate of chromium and triethanolamine, or (b) triethanolamine and acid phosphate of chromium, or (c) triethanolamine, phosphoric acid and chromic acid, the pH value of the composition being less than 3.5. The organic solvent may be methyl or ethyl alcohol or pyridine or mixtures thereof. The composition may be formed by adding triethanolamine to the organic solvent, phosphoric and chromic acids dissolved in water being then added in sequence; or chromic acid and zinc carbonate may be dissolved in phosphoric acid, such solution added to triethanolamine in the organic solvent, and water added last. The composition may be allowed to dry on the metal; or, after application, the surface may be gently washed to form a double basic phosphate of chromium and triethanolamine; or it may be thoroughly washed or brushed and subjected to another protective treatment, e.g. painting or anodizing.ALSO:Metallic surfaces are degreased, pickled and passivated by treating them with or within a composition comprising water, an organic solvent mixible with water and having a rather weak degreasing power and (a) a double phosphate of chromium and triethanolamine, or (b) triethanolamine and acid phosphate of chromium, or (c) triethanolamine, phosphoric acid and chromic acid, the pH value of the composition being less than 3.5. The organic solvent may be methyl or ethyl alcohol or pyridine or mixtures thereof. The composition may be formed by adding triethanolamine to the organic solvent, phosphoric and chromic acids dissolved in water being then added in sequence; or chromic acid and zinc carbonate may be dissolved in phosphoric acid, such solution added to triethanolamine in the organic solvent, and water added last. The composition may be allowed to dry on the metal; or, after application, the surface may be gently washed to form a double basic phosphate of chromium and triethanolamine; or it may be thoroughly washed or brushed and subjected to another protective treatment, e.g. painting or anodising.
GB16692/47A 1946-07-12 1947-06-24 Improvements in or relating to the degreasing, pickling and passivation of metals Expired GB647782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR966785T 1946-07-12

Publications (1)

Publication Number Publication Date
GB647782A true GB647782A (en) 1950-12-20

Family

ID=9500214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16692/47A Expired GB647782A (en) 1946-07-12 1947-06-24 Improvements in or relating to the degreasing, pickling and passivation of metals

Country Status (5)

Country Link
BE (1) BE473563A (en)
CH (1) CH266114A (en)
FR (1) FR966785A (en)
GB (1) GB647782A (en)
NL (1) NL68259C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006122852A1 (en) * 2005-05-19 2006-11-23 Hydro Aluminium Deutschland Gmbh Conditioning of a litho strip
WO2015165600A1 (en) * 2014-04-30 2015-11-05 Rio Verwaltungs Ag Treatment device and treatment method for pickling and phosphating metal parts
CN105369271A (en) * 2015-12-10 2016-03-02 董晓娜 Before-coating metal surface treatment method
CN113042340A (en) * 2021-01-29 2021-06-29 宁波东洲传动件有限公司 Surface treatment process for high-load injection molding rod end oscillating bearing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006122852A1 (en) * 2005-05-19 2006-11-23 Hydro Aluminium Deutschland Gmbh Conditioning of a litho strip
EP2460909A1 (en) * 2005-05-19 2012-06-06 Hydro Aluminium Deutschland GmbH Conditioning of a litho strip
US8211622B2 (en) 2005-05-19 2012-07-03 Hydro Aluminium Deutschland Gmbh Conditioning of a litho strip
US8632955B2 (en) 2005-05-19 2014-01-21 Hydro Aluminium Deutschland Gmbh Conditioning a surface of an aluminium strip
WO2015165600A1 (en) * 2014-04-30 2015-11-05 Rio Verwaltungs Ag Treatment device and treatment method for pickling and phosphating metal parts
JP2017514997A (en) * 2014-04-30 2017-06-08 リオ フェアヴァルトゥングス アクティエンゲゼルシャフト Processing apparatus and processing method for pickling and phosphating metal parts
RU2691443C2 (en) * 2014-04-30 2019-06-13 Рио Фервальтунгс Аг Processing device and processing method for etching and phosphating of metal parts
US10513784B2 (en) 2014-04-30 2019-12-24 Rio Verwaltungs Ag Treatment device and treatment method for pickling and phosphating metal parts
CN105369271A (en) * 2015-12-10 2016-03-02 董晓娜 Before-coating metal surface treatment method
CN105369271B (en) * 2015-12-10 2017-11-17 重庆永林机械设备有限公司 Metal surface treating method before a kind of application
CN113042340A (en) * 2021-01-29 2021-06-29 宁波东洲传动件有限公司 Surface treatment process for high-load injection molding rod end oscillating bearing

Also Published As

Publication number Publication date
NL68259C (en)
FR966785A (en) 1950-10-18
CH266114A (en) 1950-01-15
BE473563A (en)

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