JPS6449885A - Method of detecting material in extractor for heating furnace - Google Patents

Method of detecting material in extractor for heating furnace

Info

Publication number
JPS6449885A
JPS6449885A JP20606087A JP20606087A JPS6449885A JP S6449885 A JPS6449885 A JP S6449885A JP 20606087 A JP20606087 A JP 20606087A JP 20606087 A JP20606087 A JP 20606087A JP S6449885 A JPS6449885 A JP S6449885A
Authority
JP
Japan
Prior art keywords
extractor
heating furnace
decided
extractors
distortion
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.)
Granted
Application number
JP20606087A
Other languages
Japanese (ja)
Other versions
JPH0543956B2 (en
Inventor
Satoshi Ueda
Yoshio Kawashima
Yasuyuki Honda
Hisao Murakami
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal 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 Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP20606087A priority Critical patent/JPS6449885A/en
Publication of JPS6449885A publication Critical patent/JPS6449885A/en
Publication of JPH0543956B2 publication Critical patent/JPH0543956B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE: To automatically detect whether or not a material is mounted on an extractor by attaching distortion gauges to all extractors for supporting the material to be conveyed or to at least extractors located at both sides. CONSTITUTION: Distortion gauges 3 are respectively attached to a plurality of extractors 2 provided widthwise the extracting end of a heating furnace 1. Based on output signals from these distortion gauges 3 and the length of one material 4 conveyed in the heating furnace 1, it is decided whether or not the material is mounted on the extractor. The length of the material when the material 4 is received by the extractor 2 and the output signal from the distortion gauge 3 attached to the extractor 2 are inputted to a relative operation circuit 7 through an amplifier 6. In the relative operation circuit 7, it is decided whether or not the material is detected. Namely, when it is decided that the material 4 is mounted on the extractor 2, the lowering command of the extractor 2 is outputted to place the material 4 on an extracting roller. When it is decided that the material 4 is not mounted on the extractor, a series of extraction cycle is stopped to generate an abnormal alarm.
JP20606087A 1987-08-19 1987-08-19 Method of detecting material in extractor for heating furnace Granted JPS6449885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20606087A JPS6449885A (en) 1987-08-19 1987-08-19 Method of detecting material in extractor for heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20606087A JPS6449885A (en) 1987-08-19 1987-08-19 Method of detecting material in extractor for heating furnace

Publications (2)

Publication Number Publication Date
JPS6449885A true JPS6449885A (en) 1989-02-27
JPH0543956B2 JPH0543956B2 (en) 1993-07-05

Family

ID=16517192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20606087A Granted JPS6449885A (en) 1987-08-19 1987-08-19 Method of detecting material in extractor for heating furnace

Country Status (1)

Country Link
JP (1) JPS6449885A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100513149B1 (en) * 2000-06-24 2005-09-09 주식회사 포스코 slab falling prevention apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100513149B1 (en) * 2000-06-24 2005-09-09 주식회사 포스코 slab falling prevention apparatus

Also Published As

Publication number Publication date
JPH0543956B2 (en) 1993-07-05

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees