GB791887A - Method of de-oxidising metal surfaces - Google Patents

Method of de-oxidising metal surfaces

Info

Publication number
GB791887A
GB791887A GB34151/55A GB3415155A GB791887A GB 791887 A GB791887 A GB 791887A GB 34151/55 A GB34151/55 A GB 34151/55A GB 3415155 A GB3415155 A GB 3415155A GB 791887 A GB791887 A GB 791887A
Authority
GB
United Kingdom
Prior art keywords
steels
ammonium chloride
solution
metal surfaces
per
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
GB34151/55A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB791887A publication Critical patent/GB791887A/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

Oxide is removed from the surface of iron and steel articles by immersion in a hot solution consisting, apart from minor amounts of such substances as activators, of water, hydrochloric acid and ammonium chloride there being at least 10 gm. of the latter per 100 ml. of solution. Preferably the acid concentration is between 16 and 37 per cent by weight of HCl, the temperature between 70 DEG and 75 DEG C.; whilst the solution may be saturated with ammonium chloride. The treatment is applicable to carbon steels, "stainless" steels, molybdenum steels, tungsten steels, chromium steels, nickel steels, and chrome-vanadium steels. The ammonium chloride apparently acts as inhibitor and also as passivator since the cleaned steel surface after washing shows little tendency to reoxidize immediately. Treated surfaces may be vapour-, chemical-, or electroplated.
GB34151/55A 1954-12-16 1955-11-29 Method of de-oxidising metal surfaces Expired GB791887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US791887XA 1954-12-16 1954-12-16

Publications (1)

Publication Number Publication Date
GB791887A true GB791887A (en) 1958-03-12

Family

ID=22148977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34151/55A Expired GB791887A (en) 1954-12-16 1955-11-29 Method of de-oxidising metal surfaces

Country Status (1)

Country Link
GB (1) GB791887A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220699B (en) * 1961-04-10 1966-07-07 Montedison Spa Pickling bath for stainless steel
US4666625A (en) * 1984-11-27 1987-05-19 The Drackett Company Method of cleaning clogged drains
US4778617A (en) * 1984-11-27 1988-10-18 The Drackett Company Acid cleaner composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220699B (en) * 1961-04-10 1966-07-07 Montedison Spa Pickling bath for stainless steel
US4666625A (en) * 1984-11-27 1987-05-19 The Drackett Company Method of cleaning clogged drains
US4778617A (en) * 1984-11-27 1988-10-18 The Drackett Company Acid cleaner composition

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