GB553326A - An improved method of re-sharpening files, rasps and the like - Google Patents

An improved method of re-sharpening files, rasps and the like

Info

Publication number
GB553326A
GB553326A GB923142A GB923142A GB553326A GB 553326 A GB553326 A GB 553326A GB 923142 A GB923142 A GB 923142A GB 923142 A GB923142 A GB 923142A GB 553326 A GB553326 A GB 553326A
Authority
GB
United Kingdom
Prior art keywords
bath
files
oxidizing agent
sharpening
suspended
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
GB923142A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB923142A priority Critical patent/GB553326A/en
Publication of GB553326A publication Critical patent/GB553326A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching
    • C25F3/06—Etching of iron or steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

553,326. Resharpening files. LEYLAND, J. B. July 3, 1942, No. 9231. [Class 61 (ii)] Files are resharpened by a method consisting of immersing them, after preliminary degreasing and cleaning, in a bath of sulphuric acid or a mixture of sulphuric and nitric acids, applying to them while suspended in the sharpening bath a voltage preferably positive of 2 to 20 volts, and removing any black carbon deposit by adding a powerful oxidizing agent to the bath after the action has well started or treating the files in a bath of the oxidizing agent after leaving the sharpening bath. The preliminary degreasing may be performed by immersion in a composition made up of sulphonated fatty alcohol, sulphuric acid, a toxic of size and water and the carbon depositpreventing oxidizing agent may be potassium permanganate, potassium or sodium bichromate or hydrogen peroxide; the files may be suspended in the baths by short lengths of thick rubber tubing threaded on hooked wires.
GB923142A 1942-07-03 1942-07-03 An improved method of re-sharpening files, rasps and the like Expired GB553326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB923142A GB553326A (en) 1942-07-03 1942-07-03 An improved method of re-sharpening files, rasps and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB923142A GB553326A (en) 1942-07-03 1942-07-03 An improved method of re-sharpening files, rasps and the like

Publications (1)

Publication Number Publication Date
GB553326A true GB553326A (en) 1943-05-17

Family

ID=9867929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB923142A Expired GB553326A (en) 1942-07-03 1942-07-03 An improved method of re-sharpening files, rasps and the like

Country Status (1)

Country Link
GB (1) GB553326A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2937054A1 (en) * 2008-10-13 2010-04-16 Commissariat Energie Atomique METHOD AND DEVICE FOR DECONTAMINATING A METAL SURFACE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2937054A1 (en) * 2008-10-13 2010-04-16 Commissariat Energie Atomique METHOD AND DEVICE FOR DECONTAMINATING A METAL SURFACE
WO2010043591A1 (en) * 2008-10-13 2010-04-22 Commissariat A L'energie Atomique Method and device for decontaminating a metal surface
US9932686B2 (en) 2008-10-13 2018-04-03 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method and device for decontaminating a metallic surface

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