FR2557093B3 - METHOD FOR CONTROLLING THE FILLING PRESSURE DURING THE MANUFACTURE OF OXIDE MAGNETS - Google Patents
METHOD FOR CONTROLLING THE FILLING PRESSURE DURING THE MANUFACTURE OF OXIDE MAGNETSInfo
- Publication number
- FR2557093B3 FR2557093B3 FR8416723A FR8416723A FR2557093B3 FR 2557093 B3 FR2557093 B3 FR 2557093B3 FR 8416723 A FR8416723 A FR 8416723A FR 8416723 A FR8416723 A FR 8416723A FR 2557093 B3 FR2557093 B3 FR 2557093B3
- Authority
- FR
- France
- Prior art keywords
- pressure
- filling pressure
- manufacture
- controlling
- filler
- 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
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000000945 filler Substances 0.000 abstract 3
- 230000000903 blocking effect Effects 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000011159 matrix material Substances 0.000 abstract 2
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
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)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Magnetic Ceramics (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (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).
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 |
|---|---|
| FR2557093A3 FR2557093A3 (en) | 1985-06-28 |
| FR2557093B3 true FR2557093B3 (en) | 1985-11-22 |
Family
ID=6218111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8416723A Expired FR2557093B3 (en) | 1983-12-24 | 1984-10-31 | METHOD FOR CONTROLLING THE FILLING PRESSURE DURING THE MANUFACTURE 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3844334C1 (en) * | 1988-12-30 | 1990-06-28 | Robert Bosch Gmbh, 7000 Stuttgart, De |
-
1983
- 1983-12-24 DE DE19833347035 patent/DE3347035A1/en not_active Withdrawn
-
1984
- 1984-10-31 FR FR8416723A patent/FR2557093B3/en not_active Expired
- 1984-11-29 JP JP1984180141U patent/JPS60120809U/en active Pending
- 1984-12-21 IT IT24213/84A patent/IT1181936B/en active
- 1984-12-21 AT AT0406484A patent/AT385138B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT8424213A0 (en) | 1984-12-21 |
| IT1181936B (en) | 1987-09-30 |
| AT385138B (en) | 1988-02-25 |
| ATA406484A (en) | 1987-07-15 |
| DE3347035A1 (en) | 1985-07-04 |
| JPS60120809U (en) | 1985-08-15 |
| FR2557093A3 (en) | 1985-06-28 |
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