GB730308A - - Google Patents

Info

Publication number
GB730308A
GB730308A GB730308DA GB730308A GB 730308 A GB730308 A GB 730308A GB 730308D A GB730308D A GB 730308DA GB 730308 A GB730308 A GB 730308A
Authority
GB
United Kingdom
Prior art keywords
resistance
molten metal
unit
elements
motor
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.)
Expired
Application number
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.)
Publication date
Publication of GB730308A publication Critical patent/GB730308A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
    • B22D11/202—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level by measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/182—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring temperature
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Continuous Casting (AREA)

Abstract

730,308. Automatic liquid level control systems. BABCOCK & WILCOX CO. Oct. 27, 1952 [Nov. 10, 1951], No. 26949/52. Class 38 (4). [Also in Group XXII] In a continuous casting machine (see Group XXII) a thermal sensitive element is embedded in the mould wall and an electric control system is operatively connected with the power driven pouring vessel and the thermal sensitive element to regulate the pouring rate in response to changes in the level of molten metal within the mould. The thermal-sensitive elements may comprise thermo-couples or resistance thermometers. The platinum resistance T, Fig. 8, is connected in a bridge network and a variable resistance R adjusted to balance the bridge when the molten metal level is in a desired position. An amplifier and motor control MC regulates the operation of a potentiometer motor M to continuously balance the circuit in accordance with changes of temperature in the resistance T due to changes in the level of molten metal in the mould. The motor M may be connected direct or through power amplifying means to an adjustable rheostat in the pouring motor circuit. In a preferred embodiment, Fig. 7, two measuring units X, Y, with control circuits as in Fig. 8, comprise shafts 51, 52, driven by the potentiometer motors and connected with a differential gear 53, the output shaft 54 of which is connected to a rheostat in the pouring motor control circuit. The units X, Y are electrically connected in parallel to resistance element T and resistance R and also with a standard resistance unit Z, switches 1C-1E being operated in timed sequence to alternately connect one measuring unit to the elements T, R while the other is connected to the standard Z. Thus in the position shown, if the molten metal level is above or below its desired position, the shaft 52 will rotate due to the connection of unit Y to the elements T, R, while the shaft 51 will rotate, due to the connection of unit X to the standard Z and the consequential return of the network to its normal balanced condition, in a sense depending upon the position of the molten metal level during the previous period of connection of the unit X to the elements T, R.
GB730308D 1951-11-10 Expired GB730308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US255862A US2746105A (en) 1951-11-10 1951-11-10 Control system for continuous casting

Publications (1)

Publication Number Publication Date
GB730308A true GB730308A (en) 1900-01-01

Family

ID=22970168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB730308D Expired GB730308A (en) 1951-11-10

Country Status (4)

Country Link
US (1) US2746105A (en)
FR (1) FR1071838A (en)
GB (1) GB730308A (en)
LU (1) LU31801A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196746A1 (en) * 1985-02-01 1986-10-08 Nippon Steel Corporation Method and apparatus for preventing cast defects in continuous casting plant

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339624A (en) * 1967-09-05 Apparatus for cooling molds
FR84908E (en) * 1963-04-04 1965-05-07 Commissaria A L En Atomique Improvements in casting processes, in particular ingots, and in particular uranium carbide
US3307228A (en) * 1963-11-01 1967-03-07 Albert W Scribner Continuous casting control method and apparatus
US3358743A (en) * 1964-10-08 1967-12-19 Bunker Ramo Continuous casting system
DE1508919B1 (en) * 1966-03-05 1971-02-04 Olsson Ag Erik Arrangement of a thermosensitive element in a cooled continuous casting mold
JPS49895Y1 (en) * 1972-11-16 1974-01-11

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US222537A (en) * 1879-12-09 Improvement in bicycles
US2246907A (en) * 1940-04-12 1941-06-24 William R Webster Continuous molding machine
FR930304A (en) * 1945-04-24 1948-01-22 Method and apparatus for casting solid or hollow metal parts
US2432872A (en) * 1947-03-24 1947-12-16 Phillips Petroleum Co Pebble heater
US2560639A (en) * 1947-07-07 1951-07-17 Robertshaw Fulton Controls Co Continuous casting of metal
US2548696A (en) * 1947-10-20 1951-04-10 Dow Chemical Co Spark-gap liquid level indicator
US2586713A (en) * 1949-07-29 1952-02-19 Babcock & Wilcox Co Apparatus for controlling the rate of pouring fluid material from one container into another

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196746A1 (en) * 1985-02-01 1986-10-08 Nippon Steel Corporation Method and apparatus for preventing cast defects in continuous casting plant

Also Published As

Publication number Publication date
FR1071838A (en) 1954-09-06
LU31801A1 (en)
US2746105A (en) 1956-05-22

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