JPS57171637A - Recovering method for coated superhard alloy - Google Patents

Recovering method for coated superhard alloy

Info

Publication number
JPS57171637A
JPS57171637A JP5659281A JP5659281A JPS57171637A JP S57171637 A JPS57171637 A JP S57171637A JP 5659281 A JP5659281 A JP 5659281A JP 5659281 A JP5659281 A JP 5659281A JP S57171637 A JPS57171637 A JP S57171637A
Authority
JP
Japan
Prior art keywords
coated
alloys
superhard
molten zinc
layers
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
JP5659281A
Other languages
Japanese (ja)
Inventor
Minoru Nakano
Akira Doi
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP5659281A priority Critical patent/JPS57171637A/en
Publication of JPS57171637A publication Critical patent/JPS57171637A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: To recover constituting components with high efficiency in the stage of recovering W, Co, etc. which are the constituting components from coated superhard alloys by a molten zinc recovering method by heating the coated superhard alloys beforehand in H2, N2, CH4 atmospheres.
CONSTITUTION: The superhard alloys coated with compds. such as carbides, nitrides, carbonitrides, oxides, carbooxides, oxynitrides, carboxynitrides or the like of metals in single or multiple layers are heated in an atmosphere of H2, N2 or CH4. Thereby, in the case of H2, oxides such as Al2O3 are reduced, and the coating layers are thoroughly removed or can be changed to fine powder-like Al2O. The TiC, TiN layers are made porous by N2 or CH4 and when these are charged into molten zinc, these react in contacting the Co, Ni in the superhard base materials. Further, in the case of double coatings such as Al2O3, TiC or the like, they are treated with H2 then N2, after which they are charged into molten zinc. If Co-Zn alloys, etc. are removed in this way, the WC, etc. of the hard layers are recovered.
COPYRIGHT: (C)1982,JPO&Japio
JP5659281A 1981-04-14 1981-04-14 Recovering method for coated superhard alloy Pending JPS57171637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5659281A JPS57171637A (en) 1981-04-14 1981-04-14 Recovering method for coated superhard alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5659281A JPS57171637A (en) 1981-04-14 1981-04-14 Recovering method for coated superhard alloy

Publications (1)

Publication Number Publication Date
JPS57171637A true JPS57171637A (en) 1982-10-22

Family

ID=13031460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5659281A Pending JPS57171637A (en) 1981-04-14 1981-04-14 Recovering method for coated superhard alloy

Country Status (1)

Country Link
JP (1) JPS57171637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013019019A (en) * 2011-07-11 2013-01-31 Toyota Motor Corp Method of recycling cemented carbide and device used in the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013019019A (en) * 2011-07-11 2013-01-31 Toyota Motor Corp Method of recycling cemented carbide and device used in the method

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