GB755784A - Improvements in or relating to methods of pickling and pickling compositions - Google Patents

Improvements in or relating to methods of pickling and pickling compositions

Info

Publication number
GB755784A
GB755784A GB1799054A GB1799054A GB755784A GB 755784 A GB755784 A GB 755784A GB 1799054 A GB1799054 A GB 1799054A GB 1799054 A GB1799054 A GB 1799054A GB 755784 A GB755784 A GB 755784A
Authority
GB
United Kingdom
Prior art keywords
sulphur
parts
compound
chromium
colloidal
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
GB1799054A
Inventor
Allan Edward Chester
Joseph Tilden Irwin
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.)
Poor and Co
Original Assignee
Poor and Co
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 Poor and Co filed Critical Poor and Co
Priority to GB1799054A priority Critical patent/GB755784A/en
Publication of GB755784A publication Critical patent/GB755784A/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
    • C23G1/08—Iron or steel

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)

Abstract

An acid pickling bath for use in conditioning ferrous metal surfaces, contains a chromium aldonate and a compound capable of liberating elemental colloidal sulphur, said compound being present in such an amount that the colloidal sulphur liberated therefrom can remain dispersed in colloidal form. The acid may be sulphuric or hydrochloric, the aldonate may be chromium mannonate, arabonate, galactonate or xylonate, but is preferably gluconate, and the sulphur-liberating compound is preferably sodium thiosulphate although other compounds, such as sodium polysulphide, may be used. Preferably, the sulphur-liberating compound is present in an amount sufficient to liberate 1-8 parts of colloidal sulphur per 5425 parts of acid (calculated as 7 per cent H2SO4) or alternatively is within the range of 1-8 parts of sodium thiosulphate per 700 parts of 7 per cent H2SO4. A composition suitable for addition to an acid pickling bath is given by way of example and comprises sodium thiosulphate, chromium gluconate, dextrose and caustic soda. Specifications 641,435 [Group IV(a)] and 717,572 are referred to.
GB1799054A 1954-06-18 1954-06-18 Improvements in or relating to methods of pickling and pickling compositions Expired GB755784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1799054A GB755784A (en) 1954-06-18 1954-06-18 Improvements in or relating to methods of pickling and pickling compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1799054A GB755784A (en) 1954-06-18 1954-06-18 Improvements in or relating to methods of pickling and pickling compositions

Publications (1)

Publication Number Publication Date
GB755784A true GB755784A (en) 1956-08-29

Family

ID=10104732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1799054A Expired GB755784A (en) 1954-06-18 1954-06-18 Improvements in or relating to methods of pickling and pickling compositions

Country Status (1)

Country Link
GB (1) GB755784A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224750A (en) * 1988-09-26 1990-05-16 Fuji Xerox Co Ltd Method for removing a selenium-containing layer from an electrophotographic photoreceptor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224750A (en) * 1988-09-26 1990-05-16 Fuji Xerox Co Ltd Method for removing a selenium-containing layer from an electrophotographic photoreceptor
US5085732A (en) * 1988-09-26 1992-02-04 Fuji Xerox Co., Ltd. Method for removing a selenium-containing layer from a electrophotographic photoreceptor
GB2224750B (en) * 1988-09-26 1992-12-02 Fuji Xerox Co Ltd Method for removing a selenium-containing layer from an electrophotographic photoreceptor

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