GB791887A - Method of de-oxidising metal surfaces - Google Patents
Method of de-oxidising metal surfacesInfo
- 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
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.
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)
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 |
-
1955
- 1955-11-29 GB GB34151/55A patent/GB791887A/en not_active Expired
Cited By (3)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1107828A (en) | Improvements in or relating to wear-resistant titanium or titanium alloy articles | |
GB791887A (en) | Method of de-oxidising metal surfaces | |
GB1133663A (en) | Process for treating metal articles | |
US2357219A (en) | Corrosion-resistant ferrous alloys | |
GB964821A (en) | Improved process for descaling metal strip | |
US2474674A (en) | Salt bath for treating stainless steel products | |
SE7602838L (en) | SALT BATH FOR BIG COOLING OF BATH-NITRATED CONSTRUCTION ELEMENTS | |
US2355599A (en) | Acid metal treating baths | |
US2913360A (en) | Method of descaling nickel alloys | |
GB634599A (en) | Improvements relating to the casting of aluminium on articles or parts made of ferrous metals, or on surfaces of such metals | |
JPS5547318A (en) | Pretreating method for annealing of cr stainless steel | |
GB1059619A (en) | A method of treating metallic surfaces | |
US3335089A (en) | Hydrogen-embrittlement-inhibition with propargyl benzylamine and alkyl pyridines | |
ES391678A1 (en) | Processes and compositions for metal treatment | |
Elliott | Regeneration of steelworks hydrochloric acid pickle liquor | |
GB803727A (en) | A process and bath for descaling metals | |
GB877385A (en) | Method of chromium plating aluminium or aluminium alloy | |
JPS5531164A (en) | Manufacture of stainless steel coated with copper | |
GB991556A (en) | Improvements in or relating to a process for surface treatment of metals | |
GB837932A (en) | Process for carburising and carbonitriding iron and steel | |
GB1013712A (en) | Method of carbo-nitriding metals | |
ES8107332A1 (en) | Process and installation for the thermochemical pickling of articles of stainless steel. | |
GB701478A (en) | Improvements in or relating to a process for the electrolytic treatment of articles of iron or iron alloys | |
GB961878A (en) | Improvements relating to the continuous processing of ferrous metal | |
Gorev et al. | The Effect of Active Salt Concentration on Properties of Cyaniding Steel |