DE2234924A1 - Carbide/carbon composite - for rotating machine components - Google Patents
Carbide/carbon composite - for rotating machine componentsInfo
- Publication number
- DE2234924A1 DE2234924A1 DE19722234924 DE2234924A DE2234924A1 DE 2234924 A1 DE2234924 A1 DE 2234924A1 DE 19722234924 DE19722234924 DE 19722234924 DE 2234924 A DE2234924 A DE 2234924A DE 2234924 A1 DE2234924 A1 DE 2234924A1
- Authority
- DE
- Germany
- Prior art keywords
- machine elements
- binder
- temperature
- composite material
- graphite
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 title claims description 5
- 239000011230 binding agent Substances 0.000 claims abstract description 22
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- 239000004927 clay Substances 0.000 claims abstract description 4
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 4
- 239000005011 phenolic resin Substances 0.000 claims abstract description 4
- 150000004760 silicates Chemical class 0.000 claims abstract description 4
- 229920002050 silicone resin Polymers 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 9
- 238000010168 coupling process Methods 0.000 abstract description 9
- 238000005859 coupling reaction Methods 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- -1 gunmetal Inorganic materials 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- ZRYCRPNCXLQHPN-UHFFFAOYSA-N 3-hydroxy-2-methylbenzaldehyde Chemical compound CC1=C(O)C=CC=C1C=O ZRYCRPNCXLQHPN-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000027455 binding Effects 0.000 description 2
- 238000009739 binding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229920006360 Hostaflon Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
-
- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
-
- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
Description
Verfahren zur Herstellung von Maschinenelementen Die Erfindung betrifft ein Verfahren zur Herstellung von Maschinenelementen der drehenden Bewegung, wie Kupplungsringen, Gleitlagern, von Maschinenelementen für die Übertragung von Drehbewegungen, wie Zahnrädern, Stopfbuchsen sowie von Rohren.Process for the production of machine elements The invention relates to a method of manufacturing machine elements of rotary motion, such as Coupling rings, slide bearings, of machine elements for the transmission of rotary movements, such as gears, stuffing boxes and pipes.
Maschinenelemente im allgemeinen Sinne finden überall in der Technik umfangreiche Verwendung. Deshalb ist ihr Bedarf sehr groß. Maschinenelemente haben oft eine entscheidende Bedeutung für die einwandfreie FunktionstUchtigkeit von Maschinen, Aggregaten und ganzen Anlagen. Somit werden an ihre Qualität hohe technische Anforderungen gestellt, die sich auch ökonomisch widerspiegeln. Insofern kommt der Qualität von Kupplungsringen in Kupplungen entscheidende Bedeutung zu, Derartige Kupplungsringe bestehen aus mit Kunstharz getränkten und unter Druck gepreßten Asbestgeweben, aus Holz oder Leder, in letzterer Zeit aber auch aus Graphit. Diese Kupplungsringe unterliegen naturgemäß einer starken Beanspruchung und haben einen hohen Verschleiß. Gerade bei aus Graphit bestehenden Kupplungsringen sind an die Qualität der Bindung hohe Anforderungen gestellt, die die herkömmlichen Bindungen mit Thermoplasten oder anorganischen Bindemittel nicht erreichen, Eine ähnliche Problematik besteht bei Gleitlagern, die aufgrund ihrer grossen Laufruhe und der ökonomischen Herstellung eine breite Verwendung, vor allem beim Bau motorischer Haushaltgeräte, finden An sie werden Forderungen gestellt, wie eine glatte, einlauffähige Oberfläche, an der das Schmiermittel gut haftet, eine gute Wärmeleitfähigkeit, ein möglichst geringer Reibungskoeffizient und ein möglichst geringer Wärmeausdehnungskoeffidient, Je nach den Anforderungen, die an das Lager im Betrieb gestellt werden, kommen als Lagerwerkstoffe namentlich in Betracht: Grauguß, Rotguß, Zinnbronze, Weißmetall, Bleibronze, Aluminiumbronze, Sintermetalle, in neuerer Zeit auch Phenol-oder Kresol-Formaldeltyd-Kunstharz-Preßmassen wie Polyäthylen, polymere Fluorkohlenwasserstoffe (Teflon, Hostaflon usw.) oder Graphit. Bei letzterem ist die Schmierwirkung des Graphits ausnutzbar, Auch hier ergeben sich an den derzeitig bekannten Lagern Mängel, die auf die unzureichende Qualität der Bindung zurückzuführen sind. Bei Zahnradgetrieben besteht das Problem einer ständigen Schmierung. Bekannterweise eingesetzte Zahnräder aus Phenol- oder Kresol-Pormaldehyd-Kunstharz-Preßmassen, beispielsweise bei Modelleisenbahnen, konnten das Problem eines schmierenden Betriebes nicht in vollem Umfang lösen0 Außerdem spielen die Arbeitsgeräusche bei Zahnradgetrieben eine nicht zu unterschätzende Rolle. Im Unterschied dazu besteht bei Stopfbuchsen und Rohren eine andersgeartete Problematik insofern, als mechanische Abriebserscheinungen Ab ri e b ers che indung en aus dem Einsatzzweck resultierend, kaum auftreten. Vierlmehr ist bei diesen Maschinenelementen von ausschlaggebender Bedeutung, daß sie chemisch resistent und thermisch beständig sind. Auch hier sind bei den zur Zeit zum Einsatz gelangenden Werkstoffen noch wesentliche Verbesserungen in dieser Beziehung vhrzunehmen.Machine elements in the general sense can be found everywhere in technology extensive use. That is why their need is very great. Have machine elements often of decisive importance for the proper functioning of machines, Aggregates and entire systems. Thus, high technical requirements are placed on their quality which are also reflected economically. In this respect, the quality comes from Coupling rings in couplings are of crucial importance, such coupling rings consist of asbestos fabrics soaked with synthetic resin and pressed under pressure Wood or leather, but recently also made of graphite. These coupling rings are subject to naturally subject to heavy use and have a high level of wear and tear. Just with coupling rings made of graphite are of the quality The binding made high demands that the conventional bindings with thermoplastics or inorganic binders, a similar problem exists in plain bearings, which are due to their great smoothness and economic production An is widely used, especially in the construction of motorized household appliances they are required, such as a smooth, run-in surface on which the lubricant adheres well, good thermal conductivity, as low as possible Coefficient of friction and the lowest possible coefficient of thermal expansion, depending on The requirements that are placed on the bearing in operation come as bearing materials in particular: gray cast iron, gunmetal, tin bronze, white metal, lead bronze, aluminum bronze, Sintered metals, more recently also phenol or cresol-formaldehyde synthetic resin molding compounds such as polyethylene, polymeric fluorocarbons (Teflon, Hostaflon, etc.) or Graphite. With the latter, the lubricating effect of the graphite can be used, also here there are deficiencies in the currently known bearings that relate to the inadequate Quality of the bond. The problem is with gear drives constant lubrication. Known used gears made of phenolic or Cresol-formaldehyde synthetic resin molding compounds, for example in model railways, could not completely solving the problem of lubricating operation0 In addition to play The noise at work in gear drives plays a role that should not be underestimated. in the In contrast to this, there is a different kind of problem with stuffing boxes and pipes insofar as mechanical abrasion phenomena abrasion from the Purpose resulting, hardly occur. There is more to these machine elements It is vital that they be chemically and thermally resistant are. Here, too, the materials currently in use are still essential To see improvements in this regard.
Es ist deshalb Zweck der Erfindung, die werkstoffseitig und herstellungsmäßig bestehenden Nachteile zu beseitigen.It is therefore the purpose of the invention, in terms of materials and production to eliminate existing disadvantages.
Die Aufgabe der Erfindung besteht infolgedessen in dem Einsatz eines geeigneteren Materials und der damit zusammenhängenden Veränderung der technologischen Verfahrensschritte bei der Herstellung0 Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß Maschinenelemente der drehenden Bewegung; beispielsweise Kupplungsringe, Gleitlager, Maschinenelemente für die Übertragung von Drehbewegungen, beispielsweise Zahnräder, Stopfbuchsen und Rohre aus einem Verbundwerkstoff der Zusammensetzung 0 bis 99 % Siliziumkarbid mit Korngrößen von 1 bis 1OO/um, graphitischer Kohlenstoff, besonders in der Form ACHESON-Graphit, mit Korngroßen bis 1 mm, und 1 bis 60 % feinpulverisierten anorganischen Bindemitteln, beispielsweise Ton oder Silikaten, oder organischen Bindemitteln, beispielsweise Silikon- oder Phenolharzen, bei Raumtemperatur oder der Schmelz- bzw, Aushärtetemperatur des Bindemittels hergestellt werden.The object of the invention is therefore to use a more suitable material and the related change in technological Method steps in production According to the invention, the object is thereby achieved solved that machine elements of the rotating movement; for example coupling rings, Plain bearings, machine elements for the transmission of rotary movements, for example Gears, glands and pipes made from a composite material of the composition 0 to 99% silicon carbide with grain sizes from 1 to 100 μm, more graphitic Carbon, especially in the form of ACHESON graphite, with grain sizes up to 1 mm, and 1 to 60% finely powdered inorganic binders, for example clay or silicates, or organic Binders, for example silicone or phenolic resins, at room temperature or the melting or curing temperature of the binder.
Erfindungsgemäß erfolgt nach der Verarbeitung des Verbundwerkstoffes bei Raumtemperatur oder der Schmelztemperatur des Bindemittels eine thermische Nachbehandlung mit entsprechender Temperaturführung zur Aushärtung des Bindemittels bzw, nach der Verarbeitung des Verbundwerkstoffes bei der Aushärtetemperatur des Bindemittels eine zusätzliche thermische Nachbehandlung zur Erzielung spezieller Eigenschaften. Zur Erzielung besonderer chemisch- pkysikalischer Parameter wird der Verbundwerkstoff nachfolgend bei 600 bis 16000 C karbonisiert Der Erfindungsgegenstand wird durch die nachfolgende technol logische Beschreibung näher erläutertt Zur Herstellung von Maschinenelementen, wie Kupplungsringen, Gleitlagern, Zahnrädern, Stopfbuchsen und Rohren werden 0 biß 99 ffi Siliziumkarbid mit Korngrößen von 1 bis 100zum und graphitischer Kohlenstoff, besonders in Form von ACHESON-Graphit mit Korngrößen bis 1 mm, mit 1 bis 60 % feinpulverisierten anorganischen Bindemitteln, z.B, Ton oder Silikaten, oder organischen Bindemitteln, z.B. ilikon- oder Phenolharzen, intensiv gemischt. Dabei richtet sich die Auswahl der Konzentrationen des Siliziumkarbids, des graphitischen Kohlenstoffs und des Bindemittels nach dem Grad der mechanischen und thermischen Beanspruchung der Maschinenelemente. Durch die Wahl der KUrnung der Ausgangsmaterialien und durch Abstimmung dieser mit dem entsprechenden Arbeitærerfahren, sind Oberflächen hoher Güte herstellbar, die keinerlei Nacharbeit erfordern. Die anschließende Weiterverarbeitung kann je nach dem verwendeten Bindemittel bei Raumtemperatur, der Schmelztemperatur oder der Aushärtetemperatur des Bindemittels nach den bekannten Vakuumstrangpreß-, Topfpreß-, Heißspritz-, Spritzguß- und Trockenpreßverfahren vorgenommen werden. Bei den ersten beiden Verarbeitungsvarianten, d,h. der Verarbeitung bei Raumtempsratur oder der Schmelztemperatur des Bindemittels ist unbedingt eine nachfolgende thermische Behandlung zur Aushärtung des Verbundwerkstoffes erforderlich, wobei die Temperaturführung einen großen Einfluß auf die chemischen und physikalischen Eigenschaften des Verbundwerkstoffes ausübt. Bei der dritten Variante, d.h. der Verarbeitung bei der Aushärtetemperatur des Bindemittels, ist die thermische Nachbehandlung nur zur Erzielung spezieller Eigenschaften notwendig. Nach Abschluß der thermischen Nachbehandlung ist das Maschinenelement für den vorgesehenen Einsatz verwendbar, Für besondere Anwendungsfälle ist der Verbundwerkstoff durch thermische Nachbehandlung zu modifizieren, wodurch besonders die organisch gebunden en Verbundwerkstoffe karbonisiert werden. Diese Karbonisierungstemperaturen liegen zwischen 600 bis 16000 C und müssen für jede Zusammensetzung experimentell ermittelt werden. Auch hierbei sind die für den späteren Verwendungszwe ck besonders gewünschten chemisch-physikalischen Parameter des Maschinenelementes von Bedeutung,According to the invention takes place after the processing of the composite material a thermal aftertreatment at room temperature or the melting temperature of the binder with appropriate temperature control for curing the binder or after Processing of the composite material at the hardening temperature of the binder an additional thermal post-treatment to achieve special properties. In order to achieve special chemical-physical parameters, the composite material subsequently carbonized at 600 to 16000 C The subject of the invention is through the following technological description explains in more detail for the production of machine elements such as coupling rings, plain bearings, gear wheels, stuffing boxes and pipes are 0 to 99 ffi silicon carbide with grain sizes from 1 to 100zum and graphitic carbon, especially in the form of ACHESON graphite with grain sizes up to 1 mm, with 1 to 60% finely powdered inorganic binders, e.g. clay or silicates, or organic Binders, e.g. silicone or Phenolic resins, intensively mixed. The selection of the concentrations depends on this of silicon carbide, graphitic carbon and the binder according to the Degree of mechanical and thermal stress on the machine elements. By the choice of the grain size of the starting materials and coordination of these with the appropriate work experience, surfaces of high quality can be produced that do not have any Require rework. The subsequent further processing can depending on the used Binder at room temperature, the melting temperature or the curing temperature of the binder according to the known vacuum extrusion, pot pressing, hot spraying, injection molding and dry pressing processes. With the first two processing variants, d, h. processing at room temperature or the melting temperature of the binder a subsequent thermal treatment to harden the composite material is essential required, the temperature control having a great influence on the chemical and physical properties of the composite. The third Variant, i.e. processing at the hardening temperature of the binder thermal post-treatment is only necessary to achieve special properties. After the thermal aftertreatment has been completed, the machine element is ready for use Can be used for special applications, the composite material is through thermal Modify aftertreatment, especially the organically bound composite materials be carbonized. These carbonation temperatures are between 600 and 16,000 C and must be determined experimentally for each composition. Here too are the chemico-physical ones that are particularly desired for later use Parameters of the machine element of importance,
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722234924 DE2234924A1 (en) | 1972-07-15 | 1972-07-15 | Carbide/carbon composite - for rotating machine components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722234924 DE2234924A1 (en) | 1972-07-15 | 1972-07-15 | Carbide/carbon composite - for rotating machine components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2234924A1 true DE2234924A1 (en) | 1974-01-24 |
Family
ID=5850779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722234924 Pending DE2234924A1 (en) | 1972-07-15 | 1972-07-15 | Carbide/carbon composite - for rotating machine components |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2234924A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4127629A (en) * | 1976-07-28 | 1978-11-28 | Norton Company | Process of forming silicon carbide bodies |
| EP0145496A2 (en) * | 1983-12-14 | 1985-06-19 | The Carborundum Company | Sintered silicon carbide/graphite/carbon composite ceramic body having ultrafine grain microstructure |
| EP0165584A2 (en) * | 1984-06-20 | 1985-12-27 | Hitachi, Ltd. | Sliding contact material |
| EP0657401A2 (en) * | 1993-11-11 | 1995-06-14 | Schunk Kohlenstofftechnik GmbH | Carbon-graphite composite material |
| WO1995034519A1 (en) * | 1994-06-10 | 1995-12-21 | Alumina Ceramics Inc. (Aci) | Graphite-loaded silicon carbide |
| EP0746532A1 (en) * | 1993-02-10 | 1996-12-11 | The Morgan Crucible Company Plc | Dense, self-sintered silicon carbide/carbon-graphite composite and process for producing same |
| EP0746533A1 (en) * | 1994-02-25 | 1996-12-11 | The Morgan Crucible Company Plc | Self-sinterted silicon carbide/carbon composite |
| US5968653A (en) | 1996-01-11 | 1999-10-19 | The Morgan Crucible Company, Plc | Carbon-graphite/silicon carbide composite article |
| US20200300323A1 (en) * | 2019-03-22 | 2020-09-24 | Tmd Friction Services Gmbh | Binder-free Friction Linings, Process for Their Production, And Their Use |
-
1972
- 1972-07-15 DE DE19722234924 patent/DE2234924A1/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4127629A (en) * | 1976-07-28 | 1978-11-28 | Norton Company | Process of forming silicon carbide bodies |
| EP0145496A2 (en) * | 1983-12-14 | 1985-06-19 | The Carborundum Company | Sintered silicon carbide/graphite/carbon composite ceramic body having ultrafine grain microstructure |
| EP0145496A3 (en) * | 1983-12-14 | 1986-01-15 | Kennecott Corporation | Sintered silicon carbide/graphite/carbon composite ceramic body having ultrafine grain microstructure |
| EP0165584A2 (en) * | 1984-06-20 | 1985-12-27 | Hitachi, Ltd. | Sliding contact material |
| EP0165584A3 (en) * | 1984-06-20 | 1987-07-22 | Hitachi, Ltd. | Sliding contact material |
| EP0906896A1 (en) * | 1993-02-10 | 1999-04-07 | The Morgan Crucible Company Plc | Process for producing a dense, self-sintered silicon carbide/carbon-graphite composite |
| US5976429A (en) | 1993-02-10 | 1999-11-02 | The Morgan Crucible Company, Plc | Process for producing dense, self-sintered silicon carbide/carbon-graphite composites |
| EP0746532A4 (en) * | 1993-02-10 | 1997-08-13 | Morgan Crucible Co | Dense, self-sintered silicon carbide/carbon-graphite composite and process for producing same |
| EP0746532A1 (en) * | 1993-02-10 | 1996-12-11 | The Morgan Crucible Company Plc | Dense, self-sintered silicon carbide/carbon-graphite composite and process for producing same |
| EP0657401A3 (en) * | 1993-11-11 | 1995-11-02 | Schunk Kohlenstofftechnik Gmbh | Carbon-graphite composite material. |
| EP0657401A2 (en) * | 1993-11-11 | 1995-06-14 | Schunk Kohlenstofftechnik GmbH | Carbon-graphite composite material |
| EP0746533A1 (en) * | 1994-02-25 | 1996-12-11 | The Morgan Crucible Company Plc | Self-sinterted silicon carbide/carbon composite |
| EP0746533A4 (en) * | 1994-02-25 | 1998-01-07 | Morgan Crucible Co | Self-sinterted silicon carbide/carbon composite |
| US5486496A (en) * | 1994-06-10 | 1996-01-23 | Alumina Ceramics Co. (Aci) | Graphite-loaded silicon carbide |
| US5639407A (en) * | 1994-06-10 | 1997-06-17 | Alumina Ceramics Inc. | Process for producing a sintered ceramic body |
| US5543368A (en) * | 1994-06-10 | 1996-08-06 | Alumina Ceramics Co. (Aci) | Graphite-loaded silicon carbide |
| WO1995034519A1 (en) * | 1994-06-10 | 1995-12-21 | Alumina Ceramics Inc. (Aci) | Graphite-loaded silicon carbide |
| US5968653A (en) | 1996-01-11 | 1999-10-19 | The Morgan Crucible Company, Plc | Carbon-graphite/silicon carbide composite article |
| US20200300323A1 (en) * | 2019-03-22 | 2020-09-24 | Tmd Friction Services Gmbh | Binder-free Friction Linings, Process for Their Production, And Their Use |
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