GB977246A - Process for descaling metal - Google Patents

Process for descaling metal

Info

Publication number
GB977246A
GB977246A GB2781263A GB2781263A GB977246A GB 977246 A GB977246 A GB 977246A GB 2781263 A GB2781263 A GB 2781263A GB 2781263 A GB2781263 A GB 2781263A GB 977246 A GB977246 A GB 977246A
Authority
GB
United Kingdom
Prior art keywords
melt
peroxide
descaling metal
metal
descaling
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
GB2781263A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB977246A publication Critical patent/GB977246A/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
    • C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts

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

Metals such as alloy steels are descaled by placing the metal in a melt of alkali metal salt and hydroxide, e.g. NaNO3 and NaOH, containing a peroxide, e.g. Na2O2, and passing air or an oxidizing gas through the melt. Further peroxide may be added during descaling.
GB2781263A 1962-07-13 1963-07-12 Process for descaling metal Expired GB977246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0039364 1962-07-13

Publications (1)

Publication Number Publication Date
GB977246A true GB977246A (en) 1964-12-02

Family

ID=7044700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2781263A Expired GB977246A (en) 1962-07-13 1963-07-12 Process for descaling metal

Country Status (2)

Country Link
BE (1) BE634790A (en)
GB (1) GB977246A (en)

Also Published As

Publication number Publication date
BE634790A (en)

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