GB880470A - Improvements in or relating to the cleaning of metal surfaces - Google Patents

Improvements in or relating to the cleaning of metal surfaces

Info

Publication number
GB880470A
GB880470A GB12195/60A GB1219560A GB880470A GB 880470 A GB880470 A GB 880470A GB 12195/60 A GB12195/60 A GB 12195/60A GB 1219560 A GB1219560 A GB 1219560A GB 880470 A GB880470 A GB 880470A
Authority
GB
United Kingdom
Prior art keywords
sulphur
medium
chlorinating
liquid
chlorinating medium
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
GB12195/60A
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 GB880470A publication Critical patent/GB880470A/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
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition

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)
  • ing And Chemical Polishing (AREA)

Abstract

Adherent titanium, tin or aluminium or an alloy containing at least 80% of one or more of these metals is removed from a ferrous metal surface by treating the adhering metal with a liquid chlorinating medium comprising liquid sulphur mono- and/or di-chloride. The ferrous metal surface is preferably immersed in the chlorinating medium although as an alternative the medium may be sprayed on in a moisture-free atmosphere. A liquid diluent, e.g. titanium tetrachloride, diethyl ether or molten sulphur, may be included in the chlorinating medium and the sulphur chloride may be formed in situ by bubbling chlorine into one of the diluents containing sulphur. The chlorinating medium may also be replenished by bubbling chlorine in to combine with the sulphur formed in the reaction. The chlorinating medium is heated to initiate the reaction and the temperature thereafter kept down by refluxing. The process is particularly applicable to the removal of an inherent metal from tools and dies.ALSO:Adherent titanium, tin or aluminium or an alloy containing at least 80% of one or more of these metals is removed from a ferrous metal surface by treating the adhering metal with a liquid chlorinating medium comprising liquid sulphur mono- and/or di-chloride. The ferrous metal surface is preferably immersed in the chlorinating medium although as an alternative the medium may be sprayed on in a moisture-free atmosphere. A liquid diluent, e.g. titanium tetrachloride, diethyl ether or molten sulphur, may be included in the chlorinating medium and the sulphur chloride may be formed in situ by bubbling chlorine into one of the diluents containing sulphur. The chlorinating medium may also be replenished by bubbling chlorine in to combine with the sulphur formed in the reaction. The chlorinating medium is heated to initiate the reaction and the temperature thereafter kept down by refluxing. The process is particularly applicable to the removal of an inherent metal from tools and dies. The following alloys are referred to in the Specification <TABS:0880470/II/1>
GB12195/60A 1959-04-08 1960-04-06 Improvements in or relating to the cleaning of metal surfaces Expired GB880470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US880470XA 1959-04-08 1959-04-08

Publications (1)

Publication Number Publication Date
GB880470A true GB880470A (en) 1961-10-25

Family

ID=22209074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12195/60A Expired GB880470A (en) 1959-04-08 1960-04-06 Improvements in or relating to the cleaning of metal surfaces

Country Status (1)

Country Link
GB (1) GB880470A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6849231B2 (en) 2001-10-22 2005-02-01 Kobe Steel, Ltd. α-β type titanium alloy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6849231B2 (en) 2001-10-22 2005-02-01 Kobe Steel, Ltd. α-β type titanium alloy

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