IT1181936B - PROCEDURE FOR COMMANDING THE FILLING PRESSURE FOR THE PRODUCTION OF OXIDE MAGNETS - Google Patents

PROCEDURE FOR COMMANDING THE FILLING PRESSURE FOR THE PRODUCTION OF OXIDE MAGNETS

Info

Publication number
IT1181936B
IT1181936B IT24213/84A IT2421384A IT1181936B IT 1181936 B IT1181936 B IT 1181936B IT 24213/84 A IT24213/84 A IT 24213/84A IT 2421384 A IT2421384 A IT 2421384A IT 1181936 B IT1181936 B IT 1181936B
Authority
IT
Italy
Prior art keywords
pressure
filling pressure
filler
timer
commanding
Prior art date
Application number
IT24213/84A
Other languages
Italian (it)
Other versions
IT8424213A0 (en
Inventor
Lutz Beyer
Peter Kluge
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of IT8424213A0 publication Critical patent/IT8424213A0/en
Application granted granted Critical
Publication of IT1181936B publication Critical patent/IT1181936B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/0275—Feeding a slurry or a ceramic slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/0063—Control arrangements
    • B28B17/0081—Process control

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Control Of Presses (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Magnetic Ceramics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Powder Metallurgy (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The pressure control method is used where the filler is in the form of a paste or slick pressed by a pump into a press-matrix via a filler line and valve. A hydraulically actuated material blocking valve (3) and a pressure sensor (8) are provided between the filler line (2) and the matrix (4), to enable the pressure sensor (8) to sense the build up of filling pressure in the mould (4). When the required max. pressure is attained, a timer (12) is actuated to hold the filling pressure retention time constant via an electronic-hydraulic control circuit (9). Run-down of the timer (12) triggers upward movement of the lower pressing piston (6), with the pressure at the sensor again increasing and the first pressure threshold rising above a normal pressure fluctuation is used as a signal to close the material blocking valve (3).
IT24213/84A 1983-12-24 1984-12-21 PROCEDURE FOR COMMANDING THE FILLING PRESSURE FOR THE PRODUCTION OF OXIDE MAGNETS IT1181936B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833347035 DE3347035A1 (en) 1983-12-24 1983-12-24 Method for controlling the filling pressure during the production of oxide magnets

Publications (2)

Publication Number Publication Date
IT8424213A0 IT8424213A0 (en) 1984-12-21
IT1181936B true IT1181936B (en) 1987-09-30

Family

ID=6218111

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24213/84A IT1181936B (en) 1983-12-24 1984-12-21 PROCEDURE FOR COMMANDING THE FILLING PRESSURE FOR THE PRODUCTION OF OXIDE MAGNETS

Country Status (5)

Country Link
JP (1) JPS60120809U (en)
AT (1) AT385138B (en)
DE (1) DE3347035A1 (en)
FR (1) FR2557093B3 (en)
IT (1) IT1181936B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844334C1 (en) * 1988-12-30 1990-06-28 Robert Bosch Gmbh, 7000 Stuttgart, De

Also Published As

Publication number Publication date
ATA406484A (en) 1987-07-15
AT385138B (en) 1988-02-25
IT8424213A0 (en) 1984-12-21
FR2557093B3 (en) 1985-11-22
JPS60120809U (en) 1985-08-15
FR2557093A3 (en) 1985-06-28
DE3347035A1 (en) 1985-07-04

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