EP0899346B1 - Workpiece carrier for heat treatment of workpieces - Google Patents

Workpiece carrier for heat treatment of workpieces Download PDF

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Publication number
EP0899346B1
EP0899346B1 EP98116066A EP98116066A EP0899346B1 EP 0899346 B1 EP0899346 B1 EP 0899346B1 EP 98116066 A EP98116066 A EP 98116066A EP 98116066 A EP98116066 A EP 98116066A EP 0899346 B1 EP0899346 B1 EP 0899346B1
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EP
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Prior art keywords
work
piece
piece carrier
recesses
workpiece carrier
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EP98116066A
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German (de)
French (fr)
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EP0899346A3 (en
EP0899346A2 (en
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Ulf Nägele
Jörg Demmel
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers

Definitions

  • the invention relates to a workpiece carrier heat resistant fiber composite ceramic material for Heat treatment of workpieces arranged on it, with in Use upward facing workpiece support areas that are spaced apart in a support plane, so that the workpiece carrier as a whole for liquid or gaseous Treatment media is open. So the workpiece carrier is penetrable for the treatment media to an all-round Loading of the workpieces with the treatment media enable.
  • Workpiece carriers for use in the heat treatment of Workpieces for example annealing, hardening, soldering, CVD coating are known.
  • Such a workpiece carrier is indeed for many Uses sufficient and beneficial; the manufacture of the strip-shaped components and the formation of the edge-open slots, however, is complex and proves to be as costly.
  • the slit-shaped connection points also weaken the material and require one correspondingly massive construction, with which an increased Material consumption goes hand in hand. When handling the Workpiece carriers can get the plugged connections sometimes solve.
  • DE-A-1 281 467 shows a one-piece cast from steel formed workpiece carrier with elongated undulating elevations and depressions in one Carrier trough. There are also expansion joints in the carrier trough educated.
  • EP-A-0 452 718 shows one made of fiber composite ceramic Workpiece carrier formed with a flat material Carrier trough made of a deep-drawn or pressed Flat material web can be formed.
  • DE-U-295 12 569 shows a generic Workpiece carrier with the workpieces on longitudinal edges or edges of web-shaped walls can be placed or in Openings in these walls can be inserted.
  • DD-A-225136 shows a honeycomb body for receiving heat-treated Good thing, which body consists of a thermally resistant alloy.
  • the invention has for its object a Workpiece carrier of the type described above in this regard to improve it at the same or less Material use can be made more stable and cheaper can. Furthermore, it should be safely prevented that detached parts unintentionally loosen.
  • CFC Carbon Fiber Reinforced Carbon
  • matrix precursor made of pitch or resin.
  • the matrix precursor is used during the Manufacturing process in carbon or graphite converted. For oxidation resistance and as Wear protection can be made to the monolithic Elements can also be coated.
  • a monolithic one-piece construction Workpiece carrier can advantageously a Wet winding technology are used, one with Binder impregnated fiber bundle or a strip-shaped fiber web on a rotating core is wound up. This creates a hollow strand from which then longitudinal sections to form the monolithic Workpiece carrier can be separated. If at Using a strip-shaped fiber web Stripe width already the height of the to be manufactured Corresponds to the workpiece carrier, so this is already after the curing of the wound form obtained without a additional separation process is required.
  • the embossing in the subject of claim 1 is preferably carried out in a heated mold, where several flat material webs one above the other like laminate are arranged so that the process of curing in the heated mold can be performed.
  • the embossing preferably results in elevations and recesses with a rounded shape formed in a regular pattern of what the Possibility opened using the workpiece carrier of spacers in a defined position one above the other to arrange.
  • a one-piece monolithic workpiece carrier is also understood to be one of a plurality of hollow strand elements manufactured in wet winding technology is formed with a polygonal cross-sectional shape, which in wet state pressed together and then to Formation of the monolithic body are hardened (fig 3).
  • Hollow strand elements can be impregnated Fiber mats are used that are wet are arranged between the hollow strand elements to their To improve connection to each other, or to form a Bundles are wrapped around the hollow elements. In each The case becomes a one-piece joint-free after curing monolithic workpiece carrier received.
  • These recesses can be embossed or, for example punched through openings in one piece be a monolithic workpiece carrier. If the Workpiece carrier an embossed and embossed It is a structure that shows recesses as advantageous, the openings in the surveys and / or To provide recesses.
  • FIG. 1 shows a monolithic workpiece carrier 2 (Base grating), manufactured using prepreg technology.
  • Base grating monolithic workpiece carrier 2
  • Matrix precursor soaked tissues are placed on a press mold placed with ridges 24 and depressions 25 and then pressed. After curing and transformation in fiber composite material are in the increases 24 used by a surface grinding process Openings 26 introduced, and there is a plane Surface for receiving workpieces.
  • FIG 2 shows an example of a connection or Spacer 27 as a stacking aid for the invention Workpiece carrier 2 in Figure 1.
  • a tube 28 from fiber composite ceramic material acts as a spacer 27 between the upper and lower workpiece carrier.
  • the six pins 29 each attached to the circumference of the pipe ends engage in the openings 26 and prevent The spacer 27 slips.
  • Figures 3a-c show a winding technique for manufacturing a monolithic honeycomb structure in one Workpiece carrier 3.
  • the individual honeycombs are placed on one corresponding core 30 wound so that hollow profiles 31st arise. Then the still wet, wound Hollow profiles 31 folded, pressed and cured.
  • a monolithic base body 32 is created, which follows The cores are cut to the final shape 3 can be.
  • the upper or lower narrow side the honeycomb segments 35 as a support surface for the workpieces used.
  • the individual honeycombs are only connected via the matrix, can the bending strength of the entire grate by inserting or wrapping impregnated fiber mats 34 between the individual hollow profiles 31 or around the whole structure be improved. Then the hollow profiles 31 pressed, hardened and carbonized, there is also Fiber orientations between the individual honeycombs in the Composite.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The workpiece carrier is a single-piece, monolithic structure. Alternatively it consists of single-piece monolithic fiber reinforced ceramic support elements (51) with holes (55). Connector elements (52, 53) are inserted which consist of fiber-reinforced ceramics and take the form of strips, rods or pipes.

Description

Die Erfindung betrifft einen Werkstückträger aus hitzebeständigem faserverbundkeramischem Material zum Wärmebehandeln von darauf angeordneten Werkstücken, mit im Gebrauch nach oben gewandten Werstückauflagebereichen, die in einer Auflageebene voneinander beabstandet sind, so dass der Werkstückträger insgesamt für flüssige oder gasförmige Behandlungsmedien offen ist. Der Werkstückträger ist also für die Behandlungsmedien durchdringbar, um eine allseitige Beaufschlagung der Werkstücke mit den Behandlungsmedien zu ermöglichen. The invention relates to a workpiece carrier heat resistant fiber composite ceramic material for Heat treatment of workpieces arranged on it, with in Use upward facing workpiece support areas that are spaced apart in a support plane, so that the workpiece carrier as a whole for liquid or gaseous Treatment media is open. So the workpiece carrier is penetrable for the treatment media to an all-round Loading of the workpieces with the treatment media enable.

Werkstückträger zum Einsatz bei der Wärmebehandlung von Werkstücken, beispielsweise Glühen, Härten, Löten, CVD-Beschichten sind bekannt.Workpiece carriers for use in the heat treatment of Workpieces, for example annealing, hardening, soldering, CVD coating are known.

Mit der nicht vorveröffentlichten DE Patentanmeldung Nr. 196 51 408.8 wurde bereits vorgeschlagen, einen Werkstückträger aus faserverbundkeramischem Material zu fertigen, der aus streifenförmigen Bauteilen mit randoffenen schlitzförmigen Ausnehmungen gebildet ist, wobei die streifenförmigen Bauteile über die schlitzförmigen Ausnehmungen ineinandergreifend zusammengesteckt sind.With the unpublished DE patent application No. 196 51 408.8 has already been proposed, a workpiece carrier to manufacture from fiber composite material, which is made of strip-shaped components with slit-shaped open edges Recesses is formed, the strip-shaped Components over the slot-shaped recesses are interlocked.

Ein derartiger Werkstückträger ist zwar für viele Verwendungen ausreichend und vorteilhaft; die Fertigung der streifenförmigen Bauteile und die Ausbildung der randoffenen Schlitze ist jedoch aufwendig und erweist sich als kostenintensiv. Die schlitzförmigen Verbindungsstellen schwächen zudem das Material und erfordern eine entsprechend massive Bauweise, womit ein erhöhter Materialverbrauch einhergeht. Beim Handhaben der Werkstückträger können sich die gesteckten Verbindungen mitunter lösen.Such a workpiece carrier is indeed for many Uses sufficient and beneficial; the manufacture of the strip-shaped components and the formation of the edge-open slots, however, is complex and proves to be as costly. The slit-shaped connection points also weaken the material and require one correspondingly massive construction, with which an increased Material consumption goes hand in hand. When handling the Workpiece carriers can get the plugged connections sometimes solve.

DE-A-1 281 467 zeigt einen einteilig gegossenen aus Stahl gebildeten Werkstückträger mit langgestreckten wellenförmigen Erhebungen und Vertiefungen in einer Trägermulde. In der Trägermulde sind auch Dehnungsfugen ausgebildet.DE-A-1 281 467 shows a one-piece cast from steel formed workpiece carrier with elongated undulating elevations and depressions in one Carrier trough. There are also expansion joints in the carrier trough educated.

EP-A-0 452 718 zeigt einen aus faserverbundkeramischem Material gebildeten Werkstückträger mit einer ebenen Trägermulde, der aus einer tiefgezogenen oder gepressten Flachmaterialbahn gebildet sein kann.EP-A-0 452 718 shows one made of fiber composite ceramic Workpiece carrier formed with a flat material Carrier trough made of a deep-drawn or pressed Flat material web can be formed.

DE-U-295 12 569 zeigt einen gattungsgemäßen Werkstückträger, bei dem die Werkstücke auf Längskanten oder -ränder von stegförmigen Wandungen auflegbar oder in Öffnungen in diesen Wandungen einsteckbar sind.DE-U-295 12 569 shows a generic Workpiece carrier with the workpieces on longitudinal edges or edges of web-shaped walls can be placed or in Openings in these walls can be inserted.

DD-A-225136 zeigt einen wabenförmiger Körper zur Aufnahme wärmezubehandelnden Gutes, welcher Körper aus einer thermisch beständigen Legierung besteht. Der Erfindung liegt die Aufgabe zugrunde, einen Werkstückträger der eingangs beschriebenen Art dahingehend zu verbessern, dass er bei gleichem oder geringerem Materialeinsatz stabiler und preiswerter hergestellt werden kann. Es soll des Weiteren sicher verhindert werden, dass sich gefügte Einzelteile unbeabsichtigt lösen.DD-A-225136 shows a honeycomb body for receiving heat-treated Good thing, which body consists of a thermally resistant alloy. The invention has for its object a Workpiece carrier of the type described above in this regard to improve it at the same or less Material use can be made more stable and cheaper can. Furthermore, it should be safely prevented that detached parts unintentionally loosen.

Diese Aufgabe wird erfindungsgemäß durch einen Werkstückträger mit den Merkmalen der unabhängigen Ansprüche 1 und 4 gelöst.This object is achieved by a Workpiece carrier with the characteristics of the independent Claims 1 and 4 solved.

Dadurch, dass der Werkstückträger einstückig monolithisch ausgebildet ist, besteht nicht die Gefahr, dass sich gesteckte Verbindungsstellen lösen. Außerdem können bei geeigneter nachfolgend noch zu beschreibender Herstellungsweise die Produktionskosten gesenkt werden.The fact that the workpiece holder is monolithic trained, there is no risk that Loosen plugged connection points. In addition, at more suitable to be described below Production method, the production costs can be reduced.

Wenn vorstehend von einem einstückig monolithischen Werkstückträger gesprochen wird, so ist hierunter eine fugenlose Bauweise zu verstehen, d. h. der Körper bildet im fertigen Zustand eine feste handhabbare Einheit. Bereits beim Herstellungsprozess des faserverbundkeramischen Materials wird eine endformnahe Formgebung des Werkstückträgers erreicht.If above from a one piece monolithic Workpiece carrier is spoken, there is one among them to understand seamless construction, d. H. the body forms in finished condition a solid manageable unit. Already in the manufacturing process of fiber composite ceramics Material is a near-net shape of the Workpiece carrier reached.

Ein Beispiel eines faserverbundkeramischen Materials ist CFC (Carbon Fibre Reinforced Carbon), wobei die Fasern aus Kohlenstoff und ein sogenannter Matrixprecursor aus Pech oder Harz besteht. Der Matrixprecursor wird während des Herstellungsverfahrens in Kohlenstoff bzw. Graphit umgewandelt. Zur Oxidationsbeständigkeit und als Verschleißschutz können die hergestellten monolithischen Elemente auch beschichtet werden.An example of a fiber composite ceramic material is CFC (Carbon Fiber Reinforced Carbon), where the fibers are made of Carbon and a so-called matrix precursor made of pitch or resin. The matrix precursor is used during the Manufacturing process in carbon or graphite converted. For oxidation resistance and as Wear protection can be made to the monolithic Elements can also be coated.

Zur Herstellung eines einstückig monolithisch ausgebildeten Werkstückträgers kann in vorteilhafter Weise eine Nasswickeltechnik angewandt werden, wobei ein mit Bindemittel getränktes Faserbündel oder auch eine streifenförmige Faserbahn auf einen sich drehenden Kern aufgewickelt wird. Hierbei entsteht ein Hohlstrang, von dem dann Längsabschnitte zur Bildung des monolithischen Werkstückträgers abgetrennt werden können. Wenn bei Verwendung einer streifenförmigen Faserbahn die Streifenbreite bereits der Höhe des herzustellenden Werkstückträgers entspricht, so wird dieser bereits nach dem Aushärten der gewickelten Form erhalten, ohne dass ein zusätzlicher Trennvorgang erforderlich ist.To produce a monolithic one-piece construction Workpiece carrier can advantageously a Wet winding technology are used, one with Binder impregnated fiber bundle or a strip-shaped fiber web on a rotating core is wound up. This creates a hollow strand from which then longitudinal sections to form the monolithic Workpiece carrier can be separated. If at Using a strip-shaped fiber web Stripe width already the height of the to be manufactured Corresponds to the workpiece carrier, so this is already after the curing of the wound form obtained without a additional separation process is required.

Zur Ausbildung der Werkstückauflagebereiche können vorzugsweise gefräste randoffene Ausnehmungen vorgesehen sein. Dies eröffnet die Möglichkeit, die Werkstückträger in vorteilhafter Weise übereinanderzustapeln.Can be used to form the workpiece support areas preferably milled recesses are provided his. This opens up the possibility of the workpiece carrier in advantageous to stack one on top of the other.

Die Prägung beim Gegenstand nach Anspruch 1 wird vorzugsweise in einer geheizten Pressform durchgeführt, wobei mehrere Flachmaterialbahnen laminatartig übereinander angeordnet sind, so dass der Vorgang des Aushärtens in der erhitzten Pressform durchgeführt werden kann.The embossing in the subject of claim 1 is preferably carried out in a heated mold, where several flat material webs one above the other like laminate are arranged so that the process of curing in the heated mold can be performed.

In bevorzugter Weise werden durch die Prägung Erhebungen und Vertiefungen mit verrundeter Gestalt gebildet, die in einem regelmäßigen Muster angeordnet sind, was die Möglichkeit eröffnet, die Werkstückträger unter Verwendung von Distanzstücken in definierter Lage übereinander anzuordnen.The embossing preferably results in elevations and recesses with a rounded shape formed in a regular pattern of what the Possibility opened using the workpiece carrier of spacers in a defined position one above the other to arrange.

Als einstückig monolithisch ausgebildeter Werkstückträger wird auch ein solcher verstanden, der aus einer Mehrzahl von in Nasswickeltechnik hergestellten Hohlstrangelementen mit polygonaler Querschnittsform gebildet ist, die im nassen Zustand miteinander verpresst und anschließend zur Bildung des monolithischen Körpers ausgehärtet sind (Figur 3).As a one-piece monolithic workpiece carrier is also understood to be one of a plurality of hollow strand elements manufactured in wet winding technology is formed with a polygonal cross-sectional shape, which in wet state pressed together and then to Formation of the monolithic body are hardened (fig 3).

Zwischen den miteinander verpressten Hohlstrangelementen oder auch zur Zusammenfassung einer Gruppe von Hohlstrangelementen können getränkte imprägnierte Fasermatten verwendet werden, die im nassen Zustand zwischen den Hohlstrangelementen angeordnet sind, um deren Anbindung aneinander zu verbessern, oder zur Bildung eines Bündels um die Hohlelemente herumgewickelt sind. In jedem Fall wird nach dem Aushärten ein einstückiger fugenfreier monolithischer Werkstückträger erhalten.Between the hollow strand elements pressed together or to summarize a group of Hollow strand elements can be impregnated Fiber mats are used that are wet are arranged between the hollow strand elements to their To improve connection to each other, or to form a Bundles are wrapped around the hollow elements. In each The case becomes a one-piece joint-free after curing monolithic workpiece carrier received.

Nach einem ganz besonders vorteilhaften Erfindungsgedanken, der sich auf sämtliche Ausführungsformen der Erfindung beziehen kann, weist der Werkstückträger Stapelschnittstellen auf, mit denen Distanzstücke derart zusammenwirken können, dass mehrere Werkstückträger übereinander stapelbar sind. In bevorzugter Weise sind diese Stapelschnittstellen durch in Stapelrichtung vorgesehene Ausnehmungen gebildet, in welche Distanzstücke eingreifen können.After a particularly advantageous inventive idea, which relates to all embodiments of the invention can refer to the workpiece carrier Stack interfaces with which spacers such can work together that multiple workpiece carriers are stackable on top of each other. Are preferred these stack interfaces by in the stack direction provided recesses, into which spacers can intervene.

Diese Ausnehmungen können beispielsweise geprägte oder gestanzte Durchgangsöffnungen in einem einstückig monolithischen Werkstückträger sein. Wenn der Werkstückträger ein flächenhaft geprägte Erhebungen und Vertiefungen aufweisendes Gebilde ist, so erweist es sich als vorteilhaft, die Öffnungen in den Erhebungen und/oder Vertiefungen vorzusehen.These recesses can be embossed or, for example punched through openings in one piece be a monolithic workpiece carrier. If the Workpiece carrier an embossed and embossed It is a structure that shows recesses as advantageous, the openings in the surveys and / or To provide recesses.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den beigefügten Patentansprüchen und der zeichnerischen Darstellung und nachfolgenden Beschreibung bevorzugter Ausführungsformen der Erfindung. In der Zeichnung zeigt:

Figur 1
eine monolitische Ausführungsform eines erfindungsgemäßen in Flächenpresstechnik hergestellten Werkstückträgers;
Figur 2
die Verdeutlichung eines Stapelprinzips für den Werkstückträger nach Figur 1;
Figur 3 a-c
die Herstellungsschritte einer weiteren Ausführungsform eines monolithischen Werkstückträgers;
Further features, details and advantages of the invention result from the attached patent claims and the drawing and the following description of preferred embodiments of the invention. The drawing shows:
Figure 1
a monolithic embodiment of a workpiece carrier according to the invention manufactured in surface press technology;
Figure 2
the clarification of a stacking principle for the workpiece carrier according to Figure 1;
Figure 3 ac
the manufacturing steps of a further embodiment of a monolithic workpiece carrier;

Figur 1 zeigt einen monolithischen Werkstückträger 2 (Grundrost), hergestellt in Prepreg-Technik. Die mit Matrixprecursor getränkten Gewebe werden auf eine Pressform mit Erhöhungen 24 und Vertiefungen 25 gelegt und anschließend verpresst. Nach der Aushärtung und Umwandlung in faserverbundkeramisches Material werden in die verwendeten Erhöhungen 24 durch einen Flachschleifprozess Öffnungen 26 eingebracht, und es entsteht eine plane Oberfläche zur Aufnahme von Werkstücken.FIG. 1 shows a monolithic workpiece carrier 2 (Base grating), manufactured using prepreg technology. With Matrix precursor soaked tissues are placed on a press mold placed with ridges 24 and depressions 25 and then pressed. After curing and transformation in fiber composite material are in the increases 24 used by a surface grinding process Openings 26 introduced, and there is a plane Surface for receiving workpieces.

Figur 2 zeigt beispielhaft ein Verbindungs- bzw. Distanzstück 27 als Stapelhilfe für den erfindungsgemäßen Werkstückträger 2 in Figur 1. Ein Rohr 28 aus faserverbundkeramischem Material wirkt als Distanzstück 27 zwischen oberem und unterem Werkstückträger. Die sechs jeweils am Umfang der Rohrenden angebrachten Zapfen 29 greifen dabei in die Öffnungen 26 und verhindern ein Verrutschen des Distanzstücks 27.Figure 2 shows an example of a connection or Spacer 27 as a stacking aid for the invention Workpiece carrier 2 in Figure 1. A tube 28 from fiber composite ceramic material acts as a spacer 27 between the upper and lower workpiece carrier. The six pins 29 each attached to the circumference of the pipe ends engage in the openings 26 and prevent The spacer 27 slips.

Figuren 3a-c zeigen eine Wickeltechnik zur Herstellung einer monolithischen wabenförmigen Struktur bei einem Werkstückträger 3. Die einzelnen Waben werden auf einen entsprechenden Kern 30 aufgewickelt, so dass Hohlprofile 31 entstehen. Anschließend werden die noch nassen, gewickelten Hohlprofile 31 zusammengelegt, verpresst und ausgehärtet. Es entsteht ein monolithischer Grundkörper 32, der nach Entnahme der Kerne auf die endgültige Form 3 zugeschnitten werden kann. Dabei wird die obere oder untere Schmalseite der Wabensegmente 35 als Auflagefläche für die Werkstücke genutzt.Figures 3a-c show a winding technique for manufacturing a monolithic honeycomb structure in one Workpiece carrier 3. The individual honeycombs are placed on one corresponding core 30 wound so that hollow profiles 31st arise. Then the still wet, wound Hollow profiles 31 folded, pressed and cured. A monolithic base body 32 is created, which follows The cores are cut to the final shape 3 can be. The upper or lower narrow side the honeycomb segments 35 as a support surface for the workpieces used.

Da die einzelnen Waben nur über die Matrix verbunden sind, kann die Biegefestigkeit des gesamten Rostes durch Einlegen oder Wickeln von imprägnierten Fasermatten 34 zwischen die einzelnen Hohlprofile 31 oder um das ganze Gebilde herum verbessert werden. Werden die Hohlprofile 31 anschließend verpresst, ausgehärtet und karbonisiert, so gibt es auch Faserorientierungen zwischen den einzelnen Waben im Verbund.Since the individual honeycombs are only connected via the matrix, can the bending strength of the entire grate by inserting or wrapping impregnated fiber mats 34 between the individual hollow profiles 31 or around the whole structure be improved. Then the hollow profiles 31 pressed, hardened and carbonized, there is also Fiber orientations between the individual honeycombs in the Composite.

Durch Aufwickeln von Fasersträngen können nur langgezogene Hohlkörper 31 gefertigt werden, da die Fasern schräg und über Kreuz aufgewickelt werden müssen. Um einen schmalen Rost zu erzeugen, muss das aus gestapelten, langgezogenen Hohlkörpern hergestellte Gebilde in Segmente 35 getrennt werden. Um das Trennen zu ersparen, kann diese Wickeltechnik modifiziert werden, indem bereits ein auf Rostbreite gewebtes Band imprägniert und dann auf einen Kern gewickelt wird. Dieses Band weist eine Breite, welche der Höhe des herzustellenden Werkstückträgers entspricht, auf und kann gleichzeitig zur Verstärkung der Verbindung zwischen den Hohlprofilen eingesetzt werden.By winding fiber strands only elongated Hollow body 31 are made because the fibers are oblique and must be wound up crosswise. To a narrow one To produce rust, this has to be made of stacked, elongated Formed hollow bodies separated into segments 35 become. To save the separation, this can Wrapping technology can be modified by adding one Rust-proof woven tape and then impregnated onto one Core is wound. This band has a width, which corresponds to the height of the workpiece carrier to be manufactured, on and can simultaneously strengthen the connection be used between the hollow profiles.

Claims (6)

  1. Work-piece carrier (2) made from heat-resistant fibre compound ceramic material for the heat treatment of work-pieces arranged thereon, with, in usage, work-piece support zones facing upwards which are spaced from each other in a supporting plane in such a way that the work-piece carrier, on the whole, is open for liquid or gaseous treatment media, characterised in that it is formed in one piece and monolithically by a shaped flat material course of a fibre material soaked with a binding agent and that, by means of the shaping process, crest-shaped elevations (24) and recesses (25) are formed in the flat material course, and that openings (26) are formed in the crest-shaped elevations (24) and/or in the recesses (25).
  2. Work-piece carrier according to Claim 1, characterised in that the elevations (24) and recesses have a rounded shape.
  3. Work-piece carrier according to Claims 1 or 2, characterised in that the elevations (24) and recesses (25) are arranged according to a regular pattern, and that the openings (26) form pile interfaces for the engagement of distance pieces.
  4. Work-piece carrier (3) made from heat-resistant fibre compound ceramic material for the heat treatment of work-pieces arranged thereon, with, in usage, work-piece support zones facing upwards which are spaced from each other in a supporting plane in such a way that the work-piece carrier, on the whole, is open for liquid or gaseous treatment media, characterised in that it is executed in one piece and monolithically, where it is formed from several one-piece monolithic hollow strand elements (31) with polygon cross-section form, coiled onto a turning core (30) with the wet coiling method, where several such hollow strand elements (31) are pressed in wet condition and are finally hardened out for forming the one-piece monolithic body (32).
  5. Work-piece carrier according to Claim 4, characterised in that the work-piece carrier is formed as a longitudinal section (35) of the hollow strand elements (31) pressed together.
  6. Work-piece carrier according to Claims 4 or 5, characterised in that impregnated fibre mats (34) are arranged between the hollow strand elements (31) lying together, or between groups of several hollow strand elements lying together.
EP98116066A 1997-08-27 1998-08-26 Workpiece carrier for heat treatment of workpieces Expired - Lifetime EP0899346B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19737212 1997-08-27
DE19737212A DE19737212A1 (en) 1997-08-27 1997-08-27 Workpiece carrier for the heat treatment of workpieces

Publications (3)

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EP0899346A2 EP0899346A2 (en) 1999-03-03
EP0899346A3 EP0899346A3 (en) 1999-09-15
EP0899346B1 true EP0899346B1 (en) 2004-01-21

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EP98116066A Expired - Lifetime EP0899346B1 (en) 1997-08-27 1998-08-26 Workpiece carrier for heat treatment of workpieces

Country Status (3)

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EP (1) EP0899346B1 (en)
AT (1) ATE258231T1 (en)
DE (2) DE19737212A1 (en)

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ATE371044T1 (en) 2003-06-13 2007-09-15 Schunk Kohlenstofftechnik Gmbh CARRIER FOR COMPONENTS
DE10327095A1 (en) * 2003-06-13 2005-02-10 Schunk Kohlenstofftechnik Gmbh Support for structural components to be thermally treated, comprises frame with limbs, and grid of intersecting strands
DE10330435B4 (en) * 2003-07-04 2006-03-09 Hpp High Performance Products Gmbh Workpiece carrier
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Publication number Priority date Publication date Assignee Title
DE202010004554U1 (en) 2010-04-01 2010-07-15 Gtd Graphit Technologie Gmbh Charging rack for heat treatment of workpieces
DE102011015596A1 (en) 2010-04-01 2012-01-12 Gtd Graphit Technologie Gmbh Charging rack for heat treatment of workpieces

Also Published As

Publication number Publication date
DE59810622D1 (en) 2004-02-26
EP0899346A3 (en) 1999-09-15
DE19737212A1 (en) 1999-03-04
EP0899346A2 (en) 1999-03-03
ATE258231T1 (en) 2004-02-15

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