GB517415A - Improvements in electrochemical treatment of metal - Google Patents

Improvements in electrochemical treatment of metal

Info

Publication number
GB517415A
GB517415A GB1212838A GB1212838A GB517415A GB 517415 A GB517415 A GB 517415A GB 1212838 A GB1212838 A GB 1212838A GB 1212838 A GB1212838 A GB 1212838A GB 517415 A GB517415 A GB 517415A
Authority
GB
United Kingdom
Prior art keywords
bath
metal
nickel
metals
per cent
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
GB1212838A
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
Priority to GB1212838A priority Critical patent/GB517415A/en
Publication of GB517415A publication Critical patent/GB517415A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C25F1/04—Pickling; Descaling in solution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

517,415. Electrolytic pickling of metals. BLAUT. S, J., and LANG, H. M. April 22, 1938. No. 12128. [Class 41] Scale is removed from nickel or alloys containing nickel or chromium such as stainless steel, nickel silver, high speed steels containing in addition tungsten, vanadium and molybdenum &c. by subjecting the metal as anode to electrolytic treatment in a bath of sulphuric acid, sufficiently concentrated to develop passivity on the surface of the metal. Sulphuric acid of 30 to 80'per cent. strength by volume may be used. The bath may contain 2-20 per cent. of commercial concentrated hydrofluoric acid. Current density of 75-200 amps. per sq. ft. may be used. The metals after treatment may have a bright satin or etched surface. A small addition of nitric acid may be made to the bath to prevent gassing.
GB1212838A 1938-04-22 1938-04-22 Improvements in electrochemical treatment of metal Expired GB517415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1212838A GB517415A (en) 1938-04-22 1938-04-22 Improvements in electrochemical treatment of metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1212838A GB517415A (en) 1938-04-22 1938-04-22 Improvements in electrochemical treatment of metal

Publications (1)

Publication Number Publication Date
GB517415A true GB517415A (en) 1940-01-30

Family

ID=9998868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1212838A Expired GB517415A (en) 1938-04-22 1938-04-22 Improvements in electrochemical treatment of metal

Country Status (1)

Country Link
GB (1) GB517415A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657564A1 (en) * 1993-12-09 1995-06-14 Dario Felisari Process for cleaning and conditioning the surface of an electrolytically oxidizable metal alloy by hyperanodizing said surface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657564A1 (en) * 1993-12-09 1995-06-14 Dario Felisari Process for cleaning and conditioning the surface of an electrolytically oxidizable metal alloy by hyperanodizing said surface

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