GB557530A - Improvements in or relating to materials or compositions suitable for cleaning metalarticles and for other purposes - Google Patents

Improvements in or relating to materials or compositions suitable for cleaning metalarticles and for other purposes

Info

Publication number
GB557530A
GB557530A GB6836/42A GB683642A GB557530A GB 557530 A GB557530 A GB 557530A GB 6836/42 A GB6836/42 A GB 6836/42A GB 683642 A GB683642 A GB 683642A GB 557530 A GB557530 A GB 557530A
Authority
GB
United Kingdom
Prior art keywords
sodium
hydrogen
alkali metal
cleaning
hydroxide
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
GB6836/42A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB557530A publication Critical patent/GB557530A/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

557,530. Cleaning metals; extracting metals; hydrides; hydrogen; alcoholates. DU PONT DE NEMOURS & CO., E. I. May 20, 1942, No. 6836. Convention date, April 23, 1941. [Classes 82(i) and 82 (ii)] [Also in Groups III and IV] A composition to be used in a molten condition for cleaning metals and for other purposes comprises alkali metal hydroxide and alkali metal hydride preferably sodium hydroxide containing 1-20 per cent. of sodium hydride. The composition may be made by floating molten sodium or fused caustic soda and passing in hydrogen, the sodium being protected from oxidation, if desired, by a non-oxidizing atmosphere, or by reacting hydrogen with a fused mixture.of alkali metal hydroxide and oxide ; or preformed hydride may be dissolved in fused hydroxide. Diluents such as halides or carbonates, for example, sodium iodide, may also be present. The compositions may be used at 320-600‹C. for cleaning metals and the treated articles may be quenched in water. The compositions may also be used as reducing agents in chemical reactions, for example, for reducing metal oxides or forming alcoholates ; also they may be used in contact with water to generate hydrogen.
GB6836/42A 1941-04-23 1942-05-20 Improvements in or relating to materials or compositions suitable for cleaning metalarticles and for other purposes Expired GB557530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US389919A US2377876A (en) 1941-04-23 1941-04-23 Metal cleaning process and composition

Publications (1)

Publication Number Publication Date
GB557530A true GB557530A (en) 1943-11-24

Family

ID=23540306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6836/42A Expired GB557530A (en) 1941-04-23 1942-05-20 Improvements in or relating to materials or compositions suitable for cleaning metalarticles and for other purposes

Country Status (8)

Country Link
US (1) US2377876A (en)
BE (1) BE463149A (en)
CH (1) CH278603A (en)
DE (1) DE849789C (en)
FR (1) FR924482A (en)
GB (1) GB557530A (en)
LU (1) LU28268A1 (en)
NL (1) NL62044C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961634C (en) * 1952-02-05 1957-04-11 Ver Deutsche Metallwerke Ag Process for achieving bright surfaces of metallic materials and their alloys, preferably of steels containing chromium
DE1206262B (en) * 1963-02-28 1965-12-02 Schloemann Ag Process for deoxidizing the surface of metal objects by using alkali metal hydride

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734036A (en) * 1956-02-07 Preventing the formation of carbon
US2448262A (en) * 1943-07-19 1948-08-31 Du Pont Metal cleaning
US2499764A (en) * 1945-11-24 1950-03-07 Armco Steel Corp Processing stainless steel
US2569158A (en) * 1946-02-21 1951-09-25 United States Steel Corp Method of removing scale from ferrous articles
US2678290A (en) * 1946-09-05 1954-05-11 Pottberg Rolfe Process of removing surface oxide films on metal
US2601864A (en) * 1947-07-02 1952-07-01 Artemas F Holden Composition for and method of descaling metal parts
US2935428A (en) * 1954-03-30 1960-05-03 Callery Chemical Co Method and composition for subjecting metals to reducing conditions
US2794001A (en) * 1954-10-13 1957-05-28 Du Pont Descaling metals
US2790738A (en) * 1955-04-14 1957-04-30 Du Pont Titanium descaling bath and process
US2936286A (en) * 1955-07-25 1960-05-10 Dictaphone Corp Production of acicular iron particles
US2796366A (en) * 1955-10-31 1957-06-18 Du Pont Process and bath for descaling metals
US2880855A (en) * 1955-11-29 1959-04-07 Lasalle Steel Co Method of processing steel
US2935419A (en) * 1956-08-27 1960-05-03 American Mollerizing Corp Method of aluminization and pretreating medium therefor
US2891848A (en) * 1956-10-25 1959-06-23 Albert L Jaffe Separation of metals
DE1546112C3 (en) * 1965-05-12 1973-11-22 Dynamit Nobel Ag, 5210 Troisdorf Process for reducing the hydride losses in hydride-containing melts
US3506487A (en) * 1966-12-13 1970-04-14 Dynamit Nobel Ag Process for the removal of scale from very scaly metal surfaces
US3625900A (en) * 1968-01-22 1971-12-07 Kolene Corp Prefused descaling bath constituent and method of maintaining a constant chemical composition of a bath
AU2003294609A1 (en) * 2003-12-29 2005-07-21 Bochemie, S.R.O. Reducing melt for descaling metals and method of its preparation
CN111589782A (en) * 2020-06-18 2020-08-28 江苏徐工工程机械研究院有限公司 Workpiece cleaning device and cleaning method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE961634C (en) * 1952-02-05 1957-04-11 Ver Deutsche Metallwerke Ag Process for achieving bright surfaces of metallic materials and their alloys, preferably of steels containing chromium
DE1206262B (en) * 1963-02-28 1965-12-02 Schloemann Ag Process for deoxidizing the surface of metal objects by using alkali metal hydride

Also Published As

Publication number Publication date
FR924482A (en) 1947-08-06
BE463149A (en)
NL62044C (en)
US2377876A (en) 1945-06-12
DE849789C (en) 1952-09-18
CH278603A (en) 1951-10-31
LU28268A1 (en)

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