FR740075A - Process for improving steel tools by chemical-electrolytic process - Google Patents

Process for improving steel tools by chemical-electrolytic process

Info

Publication number
FR740075A
FR740075A FR740075DA FR740075A FR 740075 A FR740075 A FR 740075A FR 740075D A FR740075D A FR 740075DA FR 740075 A FR740075 A FR 740075A
Authority
FR
France
Prior art keywords
chemical
improving steel
steel tools
electrolytic
electrolytic process
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
Other languages
French (fr)
Inventor
Hans Ludwig
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 filed Critical
Application granted granted Critical
Publication of FR740075A publication Critical patent/FR740075A/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
    • 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
    • C23F1/06—Sharpening files

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)
FR740075D 1931-07-18 1932-07-18 Process for improving steel tools by chemical-electrolytic process Expired FR740075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE404689X 1931-07-18

Publications (1)

Publication Number Publication Date
FR740075A true FR740075A (en) 1933-01-20

Family

ID=6421830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR740075D Expired FR740075A (en) 1931-07-18 1932-07-18 Process for improving steel tools by chemical-electrolytic process

Country Status (5)

Country Link
US (1) US1965037A (en)
BE (1) BE389906A (en)
FR (1) FR740075A (en)
GB (1) GB404689A (en)
NL (1) NL40194C (en)

Also Published As

Publication number Publication date
GB404689A (en) 1934-01-18
US1965037A (en) 1934-07-03
NL40194C (en)
BE389906A (en)

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