FR2381583A1 - Controlling casting speed of steel ingots - using ladle weigher in electronic circuit actuating bottom pour stopper - Google Patents

Controlling casting speed of steel ingots - using ladle weigher in electronic circuit actuating bottom pour stopper

Info

Publication number
FR2381583A1
FR2381583A1 FR7705757A FR7705757A FR2381583A1 FR 2381583 A1 FR2381583 A1 FR 2381583A1 FR 7705757 A FR7705757 A FR 7705757A FR 7705757 A FR7705757 A FR 7705757A FR 2381583 A1 FR2381583 A1 FR 2381583A1
Authority
FR
France
Prior art keywords
ladle
weigher
unit
bottom pour
casting speed
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
FR7705757A
Other languages
French (fr)
Other versions
FR2381583B1 (en
Inventor
Hajime Nashiwa
Junichi Ohi
Sato
Sumio Kabayashi
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 FR7705757A priority Critical patent/FR2381583A1/en
Publication of FR2381583A1 publication Critical patent/FR2381583A1/en
Application granted granted Critical
Publication of FR2381583B1 publication Critical patent/FR2381583B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/04—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by weight

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

Appts. for casting metal ingots uses a ladle with a bottom pour stopper actuated by a servo unit driven by a controller. The controller contains a casting speed programmer feeding the desired speed to both a coupling unit (I) and a comparator fed with the actual speed and the difference is fed to the unit (I) which then actuates the servo. The ladle is weighed and the weighing machine feeds signals to a signal generator which is periodically scanned to obtain signals converted to Sa and fed to the comparator. The generator pref. uses formulae and/or functions derived from the change in ladle wt. w.r.t. time. A second signal generator may be used between the unit (I) and the servo, and additional comparator circuit being connected to this generator.
FR7705757A 1977-02-28 1977-02-28 Controlling casting speed of steel ingots - using ladle weigher in electronic circuit actuating bottom pour stopper Granted FR2381583A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7705757A FR2381583A1 (en) 1977-02-28 1977-02-28 Controlling casting speed of steel ingots - using ladle weigher in electronic circuit actuating bottom pour stopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7705757A FR2381583A1 (en) 1977-02-28 1977-02-28 Controlling casting speed of steel ingots - using ladle weigher in electronic circuit actuating bottom pour stopper

Publications (2)

Publication Number Publication Date
FR2381583A1 true FR2381583A1 (en) 1978-09-22
FR2381583B1 FR2381583B1 (en) 1980-04-25

Family

ID=9187308

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7705757A Granted FR2381583A1 (en) 1977-02-28 1977-02-28 Controlling casting speed of steel ingots - using ladle weigher in electronic circuit actuating bottom pour stopper

Country Status (1)

Country Link
FR (1) FR2381583A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030991A1 (en) * 1979-12-21 1981-07-01 ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme Industrial process control-system
FR2515080A1 (en) * 1981-09-28 1983-04-29 Sumitomo Metal Ind METHOD AND MACHINE FOR COUPLEE ANNULAR PARTS, AND DECREASING APPARATUS FOR IMPLEMENTING THE METHOD

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030991A1 (en) * 1979-12-21 1981-07-01 ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme Industrial process control-system
FR2515080A1 (en) * 1981-09-28 1983-04-29 Sumitomo Metal Ind METHOD AND MACHINE FOR COUPLEE ANNULAR PARTS, AND DECREASING APPARATUS FOR IMPLEMENTING THE METHOD

Also Published As

Publication number Publication date
FR2381583B1 (en) 1980-04-25

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Legal Events

Date Code Title Description
ST Notification of lapse