JPS58145308A - Detection of internal defect during drawing of metallic wire - Google Patents

Detection of internal defect during drawing of metallic wire

Info

Publication number
JPS58145308A
JPS58145308A JP57028466A JP2846682A JPS58145308A JP S58145308 A JPS58145308 A JP S58145308A JP 57028466 A JP57028466 A JP 57028466A JP 2846682 A JP2846682 A JP 2846682A JP S58145308 A JPS58145308 A JP S58145308A
Authority
JP
Japan
Prior art keywords
metallic wire
die
wire
elastic waves
oscillations
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
JP57028466A
Other languages
Japanese (ja)
Inventor
Shoichi Ishikura
Hitoshi Kono
Original Assignee
Sumitomo Electric Ind 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 Ind Ltd filed Critical Sumitomo Electric Ind Ltd
Priority to JP57028466A priority Critical patent/JPS58145308A/en
Publication of JPS58145308A publication Critical patent/JPS58145308A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F

Abstract

PURPOSE:To detect internal cracks from the local increase in elastic waves by mounting a sensor which converts oscillations to electrical signals to one of two dies disposed in series, and detecting the elastic waves generated in the metallic wire. CONSTITUTION:A metallic wire 1 passes between rolls 2 for preventing oscillations and is reduced to a metallic wire 5 by means of the fore die 6' and post die 6 of a double die device 3. This metallic wire passes through rolls 4 for preventing oscillations in the outlet and is taken by capstans or into a kettle, whereby the metallic wire is subjected one pass of reduction in area. When cracks are generated in the metallic wire in this stage, the elastic waves of the wire 1 are detected with a sensor 7, which converts the waves to electric energy. The electric energy is amplified with an amplifier 8, is fed to a rate counter 10 via a discriminator 9, and is recorded in a recorder 11. The generation of the internal cracks is thus detected from the local rise in the rate count appearing in the recorder 11.
JP57028466A 1982-02-23 1982-02-23 Detection of internal defect during drawing of metallic wire Pending JPS58145308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57028466A JPS58145308A (en) 1982-02-23 1982-02-23 Detection of internal defect during drawing of metallic wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57028466A JPS58145308A (en) 1982-02-23 1982-02-23 Detection of internal defect during drawing of metallic wire

Publications (1)

Publication Number Publication Date
JPS58145308A true JPS58145308A (en) 1983-08-30

Family

ID=12249426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57028466A Pending JPS58145308A (en) 1982-02-23 1982-02-23 Detection of internal defect during drawing of metallic wire

Country Status (1)

Country Link
JP (1) JPS58145308A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01170513A (en) * 1987-12-25 1989-07-05 Nippon Steel Corp Plug drawing method for metallic pipe
KR100427184B1 (en) * 2001-12-24 2004-04-14 한국전기연구원 Method and system for measuring the sausaging of superconductor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01170513A (en) * 1987-12-25 1989-07-05 Nippon Steel Corp Plug drawing method for metallic pipe
KR100427184B1 (en) * 2001-12-24 2004-04-14 한국전기연구원 Method and system for measuring the sausaging of superconductor

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