JPS57126975A - Formation of high speed steel oxide film - Google Patents

Formation of high speed steel oxide film

Info

Publication number
JPS57126975A
JPS57126975A JP1202281A JP1202281A JPS57126975A JP S57126975 A JPS57126975 A JP S57126975A JP 1202281 A JP1202281 A JP 1202281A JP 1202281 A JP1202281 A JP 1202281A JP S57126975 A JPS57126975 A JP S57126975A
Authority
JP
Japan
Prior art keywords
oxide film
tool
high speed
speed steel
immersed
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.)
Pending
Application number
JP1202281A
Other languages
Japanese (ja)
Inventor
Chisada Naitou
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.)
NAITO CHISADA
Original Assignee
NAITO CHISADA
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 NAITO CHISADA filed Critical NAITO CHISADA
Priority to JP1202281A priority Critical patent/JPS57126975A/en
Publication of JPS57126975A publication Critical patent/JPS57126975A/en
Pending 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/70—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using melts
    • C23C22/72—Treatment of iron or alloys based thereon

Abstract

PURPOSE:To form the oxide film of Fe3O4 on a surface by a method wherein a tool made of high speed steel of which the surface is coated with carbon is entered into salts heated to a predetermined temp. to be held therein for a desired time and, after air drying and washing, immersed in an oil. CONSTITUTION:Carbon or an oil is coated on the surface of the high speed steel tool, for example, an SKH drill, a parallel bite or the like and the treated tool is immersed in a salt bath of a potassium nitrate.sodium nitrite agent or a potassium nitrate.sodium nitride agent to be held therein for 10-30min. The treated tool is taken out from the salt bath and, after air drying and washing, immersed in an oil. Because oxygen is deficient in the salt bath, the oxide film of Fe2O3 is decomposed and the oxide film of Fe3O4 is formed and cutting property of said tool is enhanced.
JP1202281A 1981-01-29 1981-01-29 Formation of high speed steel oxide film Pending JPS57126975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1202281A JPS57126975A (en) 1981-01-29 1981-01-29 Formation of high speed steel oxide film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1202281A JPS57126975A (en) 1981-01-29 1981-01-29 Formation of high speed steel oxide film

Publications (1)

Publication Number Publication Date
JPS57126975A true JPS57126975A (en) 1982-08-06

Family

ID=11793967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1202281A Pending JPS57126975A (en) 1981-01-29 1981-01-29 Formation of high speed steel oxide film

Country Status (1)

Country Link
JP (1) JPS57126975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812971B1 (en) * 2006-02-23 2008-03-13 일진경금속 주식회사 Method for nitriding steel in salt bath and steel manufactured by its method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812971B1 (en) * 2006-02-23 2008-03-13 일진경금속 주식회사 Method for nitriding steel in salt bath and steel manufactured by its method

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