FR2379342A1 - Degassing metal or other powder for isostatic pressing - where powder flows down evacuated column inside induction heating coil - Google Patents
Degassing metal or other powder for isostatic pressing - where powder flows down evacuated column inside induction heating coilInfo
- Publication number
- FR2379342A1 FR2379342A1 FR7802333A FR7802333A FR2379342A1 FR 2379342 A1 FR2379342 A1 FR 2379342A1 FR 7802333 A FR7802333 A FR 7802333A FR 7802333 A FR7802333 A FR 7802333A FR 2379342 A1 FR2379342 A1 FR 2379342A1
- Authority
- FR
- France
- Prior art keywords
- powder
- pipe
- induction heating
- heating coil
- isostatic pressing
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
- C04B35/645—Pressure sintering
- C04B35/6455—Hot isostatic pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
Powder is degassed in a plant where the powder flows downwards from one vessel(a) through a pipe(b) into a second vessel(c). Pipe(b) has a by-pass (b1) leading to a vacuum pump; and below pipe(b1) is an adjustable choke(b2) controlling powder flow. In order to reach vacuum pipe(b1), gas removed from the powder must pass up a column of the powder which traps any fine powder particles carried upwards by the gas. Pipe(b) is pref. fitted with a by-pass(b2a) round choke (b2), which is followed by a heater located round tube(b), esp. an induction heating coil. Below the heater, a branch pipe pref. leads to a second vacuum pump used e.g. to evacuate vessel(c), which receives the degassed powder. Esp. used for powders which are to be subsequently compacted by isostatic pressing, e.g. superalloy powders or Si3N4, where all gases must be removed before pressing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7701156A SE406933B (en) | 1977-02-03 | 1977-02-03 | PROCEDURE AND DEVICE FOR DEGASING POWDER |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2379342A1 true FR2379342A1 (en) | 1978-09-01 |
Family
ID=20330348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7802333A Withdrawn FR2379342A1 (en) | 1977-02-03 | 1978-01-27 | Degassing metal or other powder for isostatic pressing - where powder flows down evacuated column inside induction heating coil |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS53131282A (en) |
DE (1) | DE2803491A1 (en) |
FR (1) | FR2379342A1 (en) |
SE (1) | SE406933B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6254002A (en) * | 1985-08-31 | 1987-03-09 | Tohoku Metal Ind Ltd | Hot hydrostatic press forming method |
SE0002318D0 (en) * | 2000-06-21 | 2000-06-21 | Hoeganaes Ab | Device for preheating powder |
CN110773733A (en) * | 2019-09-29 | 2020-02-11 | 西安欧中材料科技有限公司 | Powder discharging device for removing gas of metal powder through electromagnetic heating |
-
1977
- 1977-02-03 SE SE7701156A patent/SE406933B/en unknown
-
1978
- 1978-01-27 DE DE19782803491 patent/DE2803491A1/en active Pending
- 1978-01-27 FR FR7802333A patent/FR2379342A1/en not_active Withdrawn
- 1978-02-02 JP JP992378A patent/JPS53131282A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS53131282A (en) | 1978-11-15 |
SE406933B (en) | 1979-03-05 |
SE7701156L (en) | 1978-08-04 |
DE2803491A1 (en) | 1978-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Withdrawal of published application |