DE1814052B2 - THERMAL INSULATION ARRANGEMENT MADE OF CARBON - Google Patents
THERMAL INSULATION ARRANGEMENT MADE OF CARBONInfo
- Publication number
- DE1814052B2 DE1814052B2 DE19681814052 DE1814052A DE1814052B2 DE 1814052 B2 DE1814052 B2 DE 1814052B2 DE 19681814052 DE19681814052 DE 19681814052 DE 1814052 A DE1814052 A DE 1814052A DE 1814052 B2 DE1814052 B2 DE 1814052B2
- Authority
- DE
- Germany
- Prior art keywords
- layers
- sheets
- graphite
- carbon
- carbon felt
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 37
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 229910002804 graphite Inorganic materials 0.000 claims description 16
- 239000010439 graphite Substances 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 16
- 239000011888 foil Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C11/00—Shielding structurally associated with the reactor
- G21C11/08—Thermal shields; Thermal linings, i.e. for dissipating heat from gamma radiation which would otherwise heat an outer biological shield ; Thermal insulation
- G21C11/086—Thermal shields; Thermal linings, i.e. for dissipating heat from gamma radiation which would otherwise heat an outer biological shield ; Thermal insulation consisting of a combination of non-metallic and metallic layers, e.g. metal-sand-metal-concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/001—Thermal insulation specially adapted for cryogenic vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/0015—Controlling the temperature by thermal insulation means
- B01J2219/00155—Controlling the temperature by thermal insulation means using insulating materials or refractories
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6581—Total pressure below 1 atmosphere, e.g. vacuum
-
- 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
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/363—Carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0308—Radiation shield
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Civil Engineering (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
- Thermal Insulation (AREA)
Description
25 Abstandshalter aus Kohlenstoff, insbesondere Elektrographit, anordnen.Arrange 25 spacers made of carbon, in particular electrographite.
Naturgemäß können die erfindungsgemäßen Wär-Naturally, the inventive heat
Die vorliegende Erfindung betrifft eine im Va- meisolationsanordnungen bei Temperaturen überThe present invention relates to thermal insulation assemblies at temperatures above
kuum oder Schutzgas angeordnete Wärmeisolierung 500° C nur unter Vakuum oder Schutzgas verwendetThermal insulation 500 ° C arranged under vacuum or protective gas is only used under vacuum or protective gas
aus Kohlenstoff mit mindestens einer Isolierschicht 30 werden, da sonst der Kohlenstoff verbrennen würde,made of carbon with at least one insulating layer 30, otherwise the carbon would burn,
aus Kohlenstoffilz für Temperaturen bis über In nicht oxydierender Atmosphäre lassen sich die er-made of carbon felt for temperatures above. In a non-oxidizing atmosphere, the
3000° C. findungsgemäßen Wärmeisolationsanordnungen bis3000 ° C. inventive heat insulation arrangements up to
Es ist bekannt, Kohlenstoffilze für Zwecke der zu Temperaturen von über 3000° C anwenden, ohne
thermischen Isolation einzusetzen, sofern der Kohlen- daß zerstörende Reaktionen innerhalb der Isolationsstoff durch Vakuum- oder Schutzgasbetrieb vor Oxy- 35 anordnungen auftreten würden, wie dies beispielsdation
geschützt wird. Bei sehr hohen Temperaturen weise bei Kombinationen mit anderen keramischen
sinkt jedoch infolge des steigenden Strahlungsanteils Materialien der Fall wäre,
die Isolationswirkung der porösen Filze. In den Figuren sind zwei Ausführungsbeispiele er-It is known to use carbon felts for the purpose of temperatures of over 3000 ° C without using thermal insulation, provided that the carbon that destructive reactions would occur within the insulation material by vacuum or protective gas operation from Oxy- 35 arrangements, as this is protected by example . At very high temperatures, in combinations with other ceramic materials, however, the increasing proportion of radiation would reduce the materials,
the insulating effect of the porous felts. In the figures, two exemplary embodiments are shown
Es ist weiterhin bekannt, zur Isolation bei sehr ho- findungsgemäßer Wärmeisolationsanordnungen dar-It is also known to provide insulation for very inventive heat insulation arrangements.
hen Temperaturen Strahlungsschilde mit hohem Re- 40 gestellt.High temperatures radiation shields with a high Re- 40.
flexionsvermögen einzusetzen. Als Material hierfür F i g. 1 zeigt eine erste Ausführungsform der erfinwerden in erster Linie Bleche aus Molybdän oder dungsgemäßen Wärmeisolationsanordnung. Es sind Wolfram in Vakuum oder Schutzgas bzw. aus Edel- hier auf einen als Tragkörper dienenden Kohlenstoffmetallen in oxydierenden Atmosphären verwendet. körper 1 vier Lagen aus flexiblen Graphitfolien 2 an-Derartige Bleche aus Molybdän oder Wolfram weisen 45 geordnet, die voneinander durch Abstandshalter 3 jedoch eine Reihe von Nachteilen auf, insbesondere und Zwischenlagen 4 aus Graphitfilz getrennt sind, verspröden sie im Betrieb und haben ein hohes Ge- Über der oberstm Lage der Graphitfolien 2 ist zur wicht. weiteren Versteifung ein weiterer Kohlenstofftragkör-to use flexibility. As a material for this F i g. 1 shows a first embodiment of the invention primarily sheets made of molybdenum or appropriate thermal insulation arrangement. There are Tungsten in a vacuum or inert gas or made of noble here on a carbon metal serving as a support body in oxidizing atmospheres. body 1 four layers of flexible graphite foils 2 an-Such Sheets made of molybdenum or tungsten have 45 in an orderly manner, separated from one another by spacers 3 however, has a number of disadvantages, in particular and intermediate layers 4 made of graphite felt are separated, They become brittle in operation and have a high degree of resistance weight. further stiffening another carbon support body
Der vorliegenden Erfindung liegt die Aufgabe zu- per 5 angeordnet.The object of the present invention is arranged by way of 5.
gründe, die Nachteile der bekannten Wärmeisola- 50 Fig.2 zeigt ein zweites Ausführungsbeispiel derreasons, the disadvantages of the known thermal insulation 50 Fig.2 shows a second embodiment of the
tionsanordnungen zu vermeiden und eine Wärmeiso- Erfindung, bestehend aus einem rohrförmigen Ver-tion arrangements to avoid and a thermal iso- invention, consisting of a tubular connection
lationsanordnung zu schaffen, die sowohl bei hohen bundkörper aus abwechselnden Lagen aus flexiblenTo create a lation arrangement that consists of alternating layers of flexible
wie bei niedrigen Temperaturen eine ausreichende Graphitfolien 2 und Kohlenstoffilzlagen 4.as at low temperatures, sufficient graphite foils 2 and carbon felt layers 4.
Isolationswirkung besitzt. Die Herstellung der verwendeten flexiblen Graphit-Has insulating effect. The manufacture of the flexible graphite
Zur Lösung dieser Aufgabe wird eine Isolier- 55 platten, -blechen oder -folien erfolgt in bekannterTo solve this problem, insulating plates, sheets or foils are made in a known manner
schicht aus Kohlenstoffilz enthaltende Wärmeisola- Weise aus Graphitoxid, das zunächst expandiert undA layer of carbon felt containing thermal insulation made of graphite oxide, which initially expands and
tionsanordnung vorgeschlagen, in der zusätzlich noch dann zusammengepreßt wird.tion arrangement proposed in which is then additionally pressed together.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (4)
Wärmeisolierung aus Kohlenstoff mit mindestens Eine solche Wärmeisolationsanordnung zeichnet einer Isolationsschicht aus Kohlenstoffilz für 5 sich durch geringe Dichte, Temperaturwechselbestän-Temperaturen bis über 3000° C, dadurch ge- digkeit und Fehlen jeglicher Versprödung auch nach kennzeichnet, daß zusätzlich noch ein War- langer Betriebszeit aus. Sie weist sowohl bei hohen meschild aus einer oder mehreren Lagen aus flexi- wie bei niederen Temperaturen eine sehr hohe Isolablen, aus Graphitoxid hergestellten Graphitplat- tionswirkung auf. Vorteilhafterweise werden zwischen ten, -blechen oder -folien vorgesehen ist. io je zwei Lagen aus flexiblen Graphitplatten, -folien1. In a vacuum or protective gas arranged th, sheets or foils is provided.
Thermal insulation made of carbon with at least one such thermal insulation arrangement is characterized by an insulation layer made of carbon felt for 5 by low density, temperature change resistance temperatures up to over 3000 ° C, characterized by speed and absence of any embrittlement, also after a long operating time . It has a very high insulating effect, made of graphite oxide, of graphite plating effect, both with a high shield consisting of one or more layers of flexible and with low temperatures. Advantageously, between th, sheets or foils is provided. io two layers of flexible graphite sheets and foils each
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681814052 DE1814052B2 (en) | 1968-12-11 | 1968-12-11 | THERMAL INSULATION ARRANGEMENT MADE OF CARBON |
| AT1056969A AT297571B (en) | 1968-12-11 | 1969-11-11 | Carbon thermal insulation assembly |
| CH1686969A CH499743A (en) | 1968-12-11 | 1969-11-13 | Carbon thermal insulation assembly |
| NL6918318A NL6918318A (en) | 1968-12-11 | 1969-12-05 | |
| SE17035/69A SE346847B (en) | 1968-12-11 | 1969-12-10 | |
| GB60404/69A GB1223080A (en) | 1968-12-11 | 1969-12-10 | Heat insulating assembly |
| JP44099093A JPS4915592B1 (en) | 1968-12-11 | 1969-12-11 | |
| BE742986D BE742986A (en) | 1968-12-11 | 1969-12-11 | |
| FR6942968A FR2025904A1 (en) | 1968-12-11 | 1969-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681814052 DE1814052B2 (en) | 1968-12-11 | 1968-12-11 | THERMAL INSULATION ARRANGEMENT MADE OF CARBON |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1814052A1 DE1814052A1 (en) | 1970-06-25 |
| DE1814052B2 true DE1814052B2 (en) | 1972-09-21 |
Family
ID=5715925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681814052 Granted DE1814052B2 (en) | 1968-12-11 | 1968-12-11 | THERMAL INSULATION ARRANGEMENT MADE OF CARBON |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4915592B1 (en) |
| AT (1) | AT297571B (en) |
| BE (1) | BE742986A (en) |
| CH (1) | CH499743A (en) |
| DE (1) | DE1814052B2 (en) |
| FR (1) | FR2025904A1 (en) |
| GB (1) | GB1223080A (en) |
| NL (1) | NL6918318A (en) |
| SE (1) | SE346847B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820714A1 (en) * | 1988-06-18 | 1989-12-21 | Sigri Gmbh | Crucible for molten silicon |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1490347A (en) | 1974-02-08 | 1977-11-02 | Dunlop Ltd | Friction members |
| FR2309019A1 (en) * | 1975-04-21 | 1976-11-19 | Pechiney Ugine Kuhlmann | CONTAINMENT TANK FOR MOLTEN SALT NUCLEAR REACTORS |
| DE3242959C2 (en) * | 1981-11-20 | 1986-02-20 | Kabushiki Kaisha Kobe Seiko Sho, Kobe | Isostatic hot press device |
| GB2133862B (en) * | 1982-11-01 | 1986-04-16 | Morganite Gmbh | A heat resistant pad |
| FR2573820A1 (en) * | 1984-11-28 | 1986-05-30 | Europ Agence Spatiale | Improvements to methods for maintaining a given degree of vacuum in the volume of an enclosed space intended to be evacuated in order to provide a high level of thermal insulation, and an arrangement of the enclosed space for implementing this method |
| JPS61155260A (en) * | 1984-12-27 | 1986-07-14 | 呉羽化学工業株式会社 | Carbon product bonded with carbon materials each other and manufacture |
| DE4204823A1 (en) * | 1992-02-18 | 1993-08-19 | Man Technologie Gmbh | Cladding for protective gas oven - has insulation comprising graphite sheets adhered to one another to permit adequate gas through feed |
| US5414927A (en) * | 1993-03-30 | 1995-05-16 | Union Oil Co | Furnace elements made from graphite sheets |
| EP0867413A1 (en) * | 1997-03-27 | 1998-09-30 | Alcatel | A method for drawing an optical fibre from a glass preform |
-
1968
- 1968-12-11 DE DE19681814052 patent/DE1814052B2/en active Granted
-
1969
- 1969-11-11 AT AT1056969A patent/AT297571B/en not_active IP Right Cessation
- 1969-11-13 CH CH1686969A patent/CH499743A/en not_active IP Right Cessation
- 1969-12-05 NL NL6918318A patent/NL6918318A/xx unknown
- 1969-12-10 GB GB60404/69A patent/GB1223080A/en not_active Expired
- 1969-12-10 SE SE17035/69A patent/SE346847B/xx unknown
- 1969-12-11 JP JP44099093A patent/JPS4915592B1/ja active Pending
- 1969-12-11 FR FR6942968A patent/FR2025904A1/fr not_active Withdrawn
- 1969-12-11 BE BE742986D patent/BE742986A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820714A1 (en) * | 1988-06-18 | 1989-12-21 | Sigri Gmbh | Crucible for molten silicon |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4915592B1 (en) | 1974-04-16 |
| AT297571B (en) | 1972-03-27 |
| CH499743A (en) | 1970-11-30 |
| DE1814052A1 (en) | 1970-06-25 |
| GB1223080A (en) | 1971-02-17 |
| SE346847B (en) | 1972-07-17 |
| BE742986A (en) | 1970-06-11 |
| FR2025904A1 (en) | 1970-09-11 |
| NL6918318A (en) | 1970-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1814052B2 (en) | THERMAL INSULATION ARRANGEMENT MADE OF CARBON | |
| DE1208368B (en) | Piezoelectric force meter | |
| DE3618145C2 (en) | ||
| DE1465205C3 (en) | Resistance element | |
| DE1194503B (en) | Semiconductor diode and process for its manufacture | |
| DE2853134C2 (en) | Ceramic varistor | |
| DE1218072B (en) | Secondary electron multiplier and method of manufacturing the multiplier | |
| DE750047C (en) | Secondary emissive electrode | |
| DE2034200A1 (en) | Vacuum furnace | |
| DE2407619C3 (en) | Sandwich-like infrared emitter | |
| DE2528380B2 (en) | MESH ELECTRODE FOR ELECTRON TUBES | |
| DE891892C (en) | Electrical discharge vessel, especially for amplifying, rectifying or generating vibrations at high frequencies | |
| DE1942272C3 (en) | Ceramic heating element with pressed-in heating conductor | |
| DE1199060B (en) | Thermally insulating layer material | |
| DE881838C (en) | Holder for electrode systems of discharge vessels | |
| AT236501B (en) | Protective tube contact with at least two contact arrangements located in a common envelope | |
| DE2236329C3 (en) | Highly heat-resistant furnace lining made of ceramic material | |
| DE404345C (en) | Hot wire structure for thermal time switches | |
| AT140427B (en) | Temperature independent condenser. | |
| AT206502B (en) | Surge arrester for high voltage with reduced overall height | |
| DE1133834B (en) | Silicon rectifier and process for its manufacture | |
| CH537564A (en) | Vacuum oven | |
| DE739813C (en) | Electrical capacitor with an extremely thin layer of air as a dielectric | |
| DE842952C (en) | Inert gas furnace with ceramic heating elements | |
| AT76776B (en) | Electric radiator. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 | ||
| C3 | Grant after two publication steps (3rd publication) |