1332901 九、發明說明： 【發明所屬之技術領域】 本發明係關於用於在製程期間分開堆… 刀隔片兀件。本發明之特定 土柯< 制ί。η , '關於用於尤其在緻密化 ^ 化學療氣苓透（CVI))期間分Μ $ «% μ s 料預型& \ ]刀開堆全的環形複合材 丁 1仵之石反％形分隔片元件。 複合材料預型件可特別為 杜夕^ θ用於裊化制動盤或其他摩擦元 件之％形預型件。 【先前技術】 使環形預型件緻密化以製造制動盤及類似之裝置揭示於 _3年8月14曰申請的美國專利申請案第腦队州號；其 代表顯示於圖1中。 圖1為具有封閉空間1 〇之處理室之高度圖解說明，其中包 含由碳纖維製成的環形預型件或基材2〇填充物。填充物為 基材疊片組形式，且基材具有一般垂直對準的各中心通 道°疊片組可由複數個由一或多個中間載盤12分隔的疊加 登片組區域組成。 堆疊的基材由隔片30相互分隔。如圖2中所示，隔片30 可徑向佈置，且其數目可以改變。它們在相鄰的基材之間 提供在整個疊片組實質不變高度之間隙22，同時使疊片組 之内部容積24(由一般對準的基材中心通道組成）與位於疊 片組外部和封閉空間1 〇内部的外部容積26相通。 在圖1之實例中，封閉空間1 0包含單個基材疊片組。在一 變體中，可在相同封閉空間内並列佈置複數個基材疊片組° 93555.doc 1332901 封閉空間10由基座丨4(例如，由石墨製成）加熱，基座μ 用於界定封閉空間1 0 ’並與在基座周圍的铸件i 7外的感應 線圈16電感輕合。可使用其他加熱方法，例如，電阻加熱 耳效應）。 使含一或多種碳之前驅體之氣體進入封閉空間1〇，—俨 為烴氣體，如甲烧及/或乙院。在所示實例中，進入通過封 閉空間之底部1Ga進行。氣體通過由單或多片盤形成的預熱 器區域18’盤在封閉空間底部一片高於另—片佈置，在盤 "下支撐-基材疊片組。由預熱器盤加熱的氣體(升到封閉空 間内現有的溫度）自由流入封閉空間，同時通入内部容= 24’進入外部容積26，並進入間隙22。殘餘氣體由抽吸自 封閉空間通過在蓋1 〇b中形成的開口提取。 隔片30為單獨放置的塊元件，最通常由氧化銘製成。但， 一旦形成’氧化链塊元件很跪’且自斷裂的損失很高。實 際上，在正常使用中’習知氧化鋁塊通常持續不大於2或3 個緻密化週期。這自然增加製造成本，因為必須替換氧化 垄呂塊。 件二二在各預型件層之間適當手工放置單獨氧化紹塊元 件極耗時。在圖2中舉例顯示6個此等塊元件，在實際實行 中使用12個塊。時間負择由_ 負擔由處理易碎塊而不斷裂所需的非 重。通常，包含7個預型件盤（各具有12至14個預 广片組)的完全緻密化過程可能耗費-或二個工作曰 才能根據習知方法建立。 似工作曰 與使用單個隔片元件3〇相關的另一問題為它們傾向於由 93555.doc 1332901 =疊的預型件(和隔片)之重量導致預型件變形(實際上 ·’.· 自圓2瞭解，在隔片元件3〇之間圓周有預型件 的大非支撐區域。由於預型件材料一般易f，且由於氧化 紹組成的隔片元件3〇不變形，凹入發生在對應於隔片元件 3一〇位置的預型件表面。儘f輕微，但此等變形必須在額外 完成步驟機械加工掉，以獲得用於摩擦應用的所需平坦表 面因此，各預型件之厚度比最終產品需要的厚，預期變 $發生在已知製程及去除此等變形的最終機械加工步驟。 機械加工掉的材料表現出經濟浪費。 【發明内容】 。，前述，本發明係關於用於分開堆疊的環形預型件之 單片或其他單元環形分隔片元件。 根據本發明之分隔片元件具有具相反第—和第二表面之 ，坦化環形形狀。至少一個表面經成形，以至少部分 界定用於連通分隔片it件内部空間與外部的徑向延伸氣流 通道。 ’、机 根據本發明之分隔片元件較佳在徑向尺寸上類似於盥其 相鄰的環形預型件。即’分隔Η件較佳具有與環形預型 件相似的内徑及外徑。如果分隔片元件在尺寸上與環形預 型件一般不相同，則較佳使分隔片元件略小（即，具有大於 壞形預型件之内徑及/或小於環形預型件之外徑），而不是分 隔片元件大於環形預型件（即，徑向較寬）。 在本發明一實例中，分隔片元件由其中具有所形成剝離 塗層之碳材料（如，石墨或碳/碳複合材料）組成。 93555.doc ^32901 【實施方式】 -般而言，根據本發明之分隔片元件具有明確基本有用 與在疊片組中每個環形預型件之間使用多個單獨隔片元 件比較，單片或其他單元結構極大便於負荷具有堆疊的環 幵/預型件之處理室。如上注意到，關於圖2的上述習知佈置 需要手工放置各習知隔片元件。另外，由於習知隔片元件 通*由向易碎材料製成，如氧化鋁，必須在已超長且乏味 的手工製程期間用極大細心處理各隔片元件，以試圖避免 斷裂。隔片元件亦相對較小，且很薄（例如，^H")， 這亦使它們處理困難。 利用根據本發明之單片式 之單一動作代替根據習知方 置動作。與用以上討論的習 比較，使用根據本發明之單 時間減到2至4小時。 分隔片元件，佈置分隔片元件 法佈置單獨隔片元件的數個放 知方式裝載處理室之一或二天 片式分隔片在相等基礎使裝載 平珣隔片元件比較，根击 本發明之單片式分隔片元件之結構 再在更大耗圍較佳支樓^ 上堆疊的一或多個環形預型件 ' v u , 之重量。特別為，環形單片y ，隔片元件之徑向寬度約等於或略窄於環形預型件" :立因此^處理：移出後，各環形預型件有較小變形。 這意味’在緻在、化製程後需要較少綠^ i 文钗^補救性機械加 用不變形表面。 叫加工摱付有 剛已提到，單片式分隔片 疋件較佳具有與 J袁形預型件 約 93555.doc 相同之徑向寬度，或略窄（例 一 乍1例如’相對於其外及/或内徑約 5毫米）。如果單片式分隔片元杜 ’ 几件寬於環形預型件，暴露的 部分趨向於自敏密化氣體分解在其上具有殘餘積累（如1 溫分解的破)。這將減少分隔片元件的使用壽命，或者為移 除此等積累需要額外再磨光步驟。^田、 广 乂騍此外，如果分隔片元件 徑向向外伸出環形預型件 之外邊緣，則可能導致的問題 為’在用於同時處理的處理室放置數個環形預型件疊片，且 (這通常進行）。這將負面影響製造效率達到這樣—種程度， 由於處理室内的間隔問S，可一起處理較小數個疊片組。 通常，根據本發明之單片式分隔片元件在其一或二個表 ，包括徑向延伸的通道或其他特冑，該通道以淨效應至少 4刀界定連通單片式分隔片元件之徑向内彻!與其徑向外側 之氣流通道。在此應注意"部分，，界定的氣流通道，因為在 些例中’氣流通道亦部分由與單片式分隔片元件結構結 口的％形預型件之-之相對表面界I利用單片式分隔片 的氣流通道之橫截面面積較佳以淨效應可與先前佈置中顯 不的k截面面積比較。但，此考慮可根據單獨情況變化。 應瞭解，所顯示的氣流通道之集合性橫截面面積可受（例 如）調節各通道或類似者之尺寸或提供多個通道或類似者 響。關於此點的決定因素為保持用於覆蓋環形預型件的 理想載體水平。 通常’根據本發明之單片式分隔片元件應由能夠經受至 问約ll00°C (較佳高達約120(TC至140(TC (出於完全目的）) 之溫度之材料製成。所選擇材料較佳在所提到操作溫度與 93555.d, 丄 預型件為最低反應性。 適用於單片式分（J3li _ 於)，碳材料，二件的材料之實例包括(但不限 ’ 石墨、碳/碳及織造碳纖維紗線；槿製的陶 竞；及金屬材料，如不銹 以的陶 鎢。 秀鋼、—合金、鈦、鉬、鈕及 圖3a-3c、4“。和5a_5c顯示根據 片式分隔片之實例幾何風^上 反為主之早 料，或可為很埶導性石黑_ ^如）^/¼材 …泽性石墨。在後例中， UCAR^MKU-S^^T|,#〇 ㈣如咖、 可根據本發明用已知方式自Μ或3_ 碳/碳材料製成環形分卩s H 4 ^針利）將 合™或樹脂二製=織造碳纖維織物層 可將以石炭/碳為主的原粗 成形”…用已知方式模製或/或機械加工 所需幾何形。 的石墨用已知方式㈣料機械加工 在圖3a 3c申’圖33為根據本發明之環形分 之俯視圖。圖3b為if弗八^ u 片疋件300 圖b為％形分隔片元件3〇〇之透視 垂直於其中環形分陪y - & 國C马在 Y衣办刀隔片疋件]^平放平面之平1332901 IX. Description of the Invention: [Technical Field to Which the Invention Is Ascribed] The present invention relates to a separate blade assembly for use in a process. The specificity of the present invention is < η , 'About for use in especially during densification ^ chemotherapeutic gas permeable (CVI)) Μ $ «% μ s material preform & \ ] knife open pile of ring-shaped composite material Shape separator element. The composite preform can be used in particular for the 形 ^ θ for the % shaped preform of the brake disc or other friction element. [Prior Art] A method of densifying a toroidal preform to produce a brake disc and the like is disclosed in U.S. Patent Application Serial No. 4, filed on Jan. 14, the disclosure of which is incorporated herein. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a high level illustration of a process chamber having a closed space of 1 , comprising an annular preform made of carbon fiber or a substrate 2 〇 filler. The filler is in the form of a substrate laminate, and the substrate has central channels that are generally vertically aligned. The laminate stack can be comprised of a plurality of stacked panel regions separated by one or more intermediate carriers 12. The stacked substrates are separated from each other by a separator 30. As shown in Figure 2, the spacers 30 can be arranged radially and the number can vary. They provide a gap 22 between substantially adjacent stacks of substantially constant height between adjacent substrates while simultaneously providing the inner volume 24 of the laminate stack (consisting of a generally aligned substrate center channel) from the outside of the laminate stack It communicates with the external volume 26 inside the enclosed space 1 . In the example of Figure 1, the enclosed space 10 contains a single substrate laminate set. In a variant, a plurality of substrate stacks can be arranged side by side in the same enclosed space. 93555.doc 1332901 The enclosed space 10 is heated by a base 丨4 (for example made of graphite), and the base μ is used for defining The enclosed space 10' is in direct contact with the inductance of the induction coil 16 outside the casting i7 around the pedestal. Other heating methods can be used, for example, resistance heating ear effect). The gas containing one or more carbon precursors is introduced into the closed space, that is, a hydrocarbon gas such as a burnt gas and/or a hospital. In the example shown, the entry takes place through the bottom 1Ga of the enclosed space. The gas passes through a preheater zone 18' formed by a single or multiple discs at the bottom of the enclosed space, one above the other, and under the disc" The gas heated by the preheater disk (rise to the existing temperature in the enclosed space) flows freely into the enclosed space while passing into the internal volume = 24' into the external volume 26 and into the gap 22. The residual gas is extracted from the enclosed space by suction through an opening formed in the cover 1 〇b. The septum 30 is a separately placed block element, most commonly made of oxidized. However, once the 'oxidized chain element is formed, it is very 跪' and the loss from self-breaking is high. In fact, in normal use, conventional alumina blocks typically last no more than 2 or 3 densification cycles. This naturally increases the manufacturing cost because the oxidized ridge block must be replaced. It is extremely time consuming to properly place the individual oxide blocks between the preform layers. In Fig. 2, six such block elements are shown by way of example, and 12 blocks are used in actual implementation. The time negative is chosen by the _ burden to deal with the fragile block without breaking the required non-weight. In general, a full densification process involving seven preform disks (each having 12 to 14 pre-blanket sets) may take up to - or two jobs to be established according to conventional methods. Another problem associated with the use of a single spacer element 3〇 is that they tend to be deformed by the weight of the pre-form (and spacer) of 93555.doc 1332901 = stacked (actually ·. It is understood from the circle 2 that there is a large unsupported area of the preform between the spacer elements 3〇. Since the preform material is generally easy to f, and since the spacer element 3 of the oxide composition is not deformed, the recession occurs. At the surface of the preform corresponding to the position of the spacer element 3, the slightest f, but these deformations must be machined out in an additional step to obtain the desired flat surface for the friction application. Therefore, the preforms The thickness is thicker than that required for the final product and is expected to occur in the known manufacturing process and the final machining step to remove such deformations. The machined material exhibits economic waste. [Invention] The foregoing relates to the present invention. Monolithic or other unit annular separator element for separate stacked annular preforms. The separator element according to the present invention has a conical annular shape with opposite first and second surfaces. At least one surface Forming, at least partially defining a radially extending airflow passage for communicating the inner space and the outer portion of the partition piece. The machine element according to the present invention preferably has a radial dimension similar to that of the adjacent ring shape. The profile member, that is, the 'partition member' preferably has an inner diameter and an outer diameter similar to those of the annular preform. If the separator member is generally different in size from the annular preform, it is preferred to make the separator member slightly smaller ( That is, having an inner diameter greater than the bad preform and/or less than the outer diameter of the annular preform, rather than the separator element being larger than the annular preform (ie, radially wider). In an embodiment of the invention The separator member is composed of a carbon material (for example, graphite or carbon/carbon composite material) having a release coating layer formed therein. 93555.doc ^32901 [Embodiment] In general, the separator member according to the present invention has Clearly and substantially useful compared to the use of multiple individual spacer elements between each annular preform in a laminate stack, a single piece or other unit structure greatly facilitates the processing of a chamber having stacked loops/preforms. To The above conventional arrangement of Figure 2 requires manual placement of the various conventional spacer elements. In addition, since conventional spacer elements are made of materials that are made of fragile materials, such as alumina, must be in an overly long and tedious manual. Each spacer element is treated with great care during the process in an attempt to avoid breakage. The spacer elements are also relatively small and thin (eg, ^H"), which also makes them difficult to handle. Utilizing the monolithic shape according to the present invention The single action instead of the conventional action is compared to the use of the above discussed, using a single time according to the invention reduced to 2 to 4 hours. Separator element, arrangement of the spacer element method arranging several of the individual spacer elements One-way or two-day chip separators are placed on an equal basis to compare the load-bearing spacer elements, and the structure of the single-piece separator element of the present invention is further improved in a better branch. The weight of one or more annular preforms 'vu' stacked on top. In particular, the annular monolith y, the radial width of the spacer element is approximately equal to or slightly narrower than the annular preform ": thus treated: after removal, each annular preform has less deformation. This means that less green is needed after the process is completed, and the remedial machine is used to apply a non-deformable surface. It has been mentioned that the one-piece separator piece preferably has the same radial width as the J-shaped preform about 93555.doc, or is slightly narrower (for example, 'for example, 'relative to its Outside and / or inner diameter of about 5 mm). If the one-piece separator sheet Du' is wider than the annular preform, the exposed portion tends to have residual accumulation (e.g., breakage of 1 temperature decomposition) from the decomposition of the self-densifying gas. This will reduce the useful life of the separator elements or require an additional refurbishing step to remove such buildup. ^Field, 广乂骒 In addition, if the separator element protrudes radially outward from the outer edge of the annular preform, the problem may be caused by 'putting several annular preform laminations in the processing chamber for simultaneous processing. And (this is usually done). This will negatively affect the manufacturing efficiency to such an extent that a smaller number of lamination stacks can be processed together due to the spacing S in the processing chamber. In general, a one-piece separator element in accordance with the present invention, in one or both of its tables, includes radially extending channels or other features that define a radial direction of at least four knives that communicate with the monolithic separator element. Necher! Airflow passage with its radially outer side. Here, attention should be paid to the "partially, defined airflow path, as in some cases the 'airflow channel is also partially partially opposed to the surface of the %-shaped preform that is connected to the monolithic separator element structure. The cross-sectional area of the gas flow passage of the chip separator is preferably comparable to the k cross-sectional area shown in the previous arrangement with a net effect. However, this consideration can vary depending on the individual circumstances. It will be appreciated that the collective cross-sectional area of the illustrated airflow passages may be conditioned by, for example, adjusting the size of each channel or the like or providing multiple channels or the like. The decisive factor in this regard is to maintain an ideal carrier level for covering the annular preform. Generally, the monolithic separator element according to the present invention should be made of a material capable of withstanding temperatures up to about 110 ° C (preferably up to about 120 (TC to 140 (for full purpose)). The material is preferably at the operating temperature mentioned and 93555.d, and the 丄 preform is the lowest reactivity. Suitable for monolithic (J3li _), carbon materials, examples of two materials including (but not limited to) Graphite, carbon/carbon and woven carbon fiber yarns; tantalum pottery; and metal materials such as stainless steel, such as stainless steel. Xiugang, - alloy, titanium, molybdenum, buttons and Figures 3a-3c, 4". 5a_5c shows that the geometrical wind according to the example of the chip separator is the main material, or it may be very conductive stone black _ ^如)^/1⁄4 material... Zeolite graphite. In the latter example, UCAR^MKU -S^^T|,#〇(4), according to the invention, can be made in a known manner from a crucible or a 3_ carbon/carbon material in the form of a ring-shaped bifurcation s H 4 ^ needle-like) The carbon fiber fabric layer can be formed by the original rough forming of carbon/carbon-based... molding and/or machining the desired geometry in a known manner. The graphite is in a known manner (four) material machinery Fig. 3a 3c is a top view of the ring according to the present invention. Fig. 3b is a if-e ^ ^ 300 300 300 图 图 图 图 图 图 图 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 y - & country C horse in the Y clothing knife partition piece] ^ flat flat level
件300之橫截面正視圖。 刀隔片7G 環形分隔片元件300具有複數個分開 起部分卜些在⑽表示）與其—側上其間的相對 (一些在304b表示）交替。ρη样 „ -口Ρ刀 替同樣，環形分隔片300的另一側且 有對應分開的-般規則形狀高起部分(一些由虛線在3。2: 表不）與其間的相對低下部分（一些在3㈣表示）交替。 93555.doc 丄 在本實丫列φ，t i p 可起部分302a，304a之邊緣部分在環形分 一 的另側重豐對應高起部分之邊緣。例如，見 2 匕們共同比以上提到的習知隔片元件30提供更大重 “、仃面積。因此’疊片組之重量在更大面積展開，且負 :不以在對應習知隔片元件如定位的習知方法中導致相對 嚴重影響之習知方式集中。 ，低下部分302b，3〇4b界定緻密化氣體能夠自堆叠環形預 =件内m彳外部的徑向延伸通道或氣流通如上提 丨此等通道對緻密化氣流顯示的集合性橫截面面積一般 可根據特定操作情況變H _面面料常應可與使 用以上所提到習知隔片元件3G時顯示者比較。 在圖4a 4c中，圖4a為根據本發明之環形分隔片元件彻 之俯視圖。圖4b為環形分隔片元件彻之透視圖。圖^為在 垂直於其中環形分隔片元件_平放平面之平面分隔片元 件4 0 0之橫截面正視圖。 環形分隔片元件_結構與環形分隔片元件遍的類似之 處在於’纟兩側均具有相對高起部分4心，偏績相對低 下部分402b ’ 4G4b交#。在此’相對低下部分4咖，義 同樣界定緻密化氣體能夠自堆疊環形預型件内部流到其外 部的徑向延伸通道或氣流通道。 可在圖3c中看到，環形分隔片元件之結構係相對於植 成材料306之令心平面厚度界定。因此，可在環形分隔片元 件300之外部邊緣周圍追蹤直圓周路徑。 相反，由於環形分隔片元件400相對薄於環形分隔片元件 93555.doc 1332901 300 ’所以沒有其中組成材料的相當平面厚度。因此，只可 沿環形分隔片元件400的外部邊緣追蹤波動路徑（對應於交 替高起部分和低下部分）。（例如，見圖4c)。 又 在圖5a-5C中，圖5a為根據本發明之環形分隔片元件5〇〇 之俯視圖。圖5b為環形分隔片元件5⑽之透視圖。圖&為在 垂直於其中環形分隔片元件5〇〇平放平面之平面分隔片元 件500之橫截面正視圖。 環形分隔片元件500與環形分隔片元件3〇〇和4〇〇的最— 般區別在於，環形分隔片元件5〇〇相反側的相對高起部分 5〇=，5〇4a對準，如同低下部分5〇孔，5〇处。尤其見圖&。 如前’低下部分5G2b，5〇413至少部分界定緻密化氣體能夠 在堆疊環形預型件内部及其外部之間能夠通過的通道。 、在一實例中，可自於碳（例如，石墨味料的相反面上形 成對應通道5G2b ’ 5G4b之觀點考慮製造環形分隔片元件 500,坯料在高起部分5〇2a’ 5〇乜對應的位置具有至少在環 形分隔片元件500厚度級的初始厚度。 如上提到，前述幾何形可由任何已知適當方法獲得，尤 其仁不僅由機械加工或模製或二者獲得。 ,在用碳材料製造根據本發明之分隔片元件用於複合碳環 开:預型件時’有時在緻密化製程後有分隔片元件接著到預 1 «I為解決此問題，本發明涵蓋在分隔片元件表 面上提供剝離塗層，以幫助避免此接著。 、 有用剝離塗層的一個實例包括在分隔片元件上形成的由 2、、且成之第一層和在第一層上形成的由Al2〇3組成之第 93555.doc 12 ujzyui 二層。例如，此等層可用已知 層作為橋接層，以改良噴射方法形成。藝: 良Α!2〇3層對結構之接著。 二Γ尤Γ以碳為主的分隔片元件在製造期間具有 1= Γ石墨分隔片元件。通常，對環形預型件 执曰… “70件增加疊片組的熱質，以促進加 熱且依二人促進緻密化。由 難，迻祀有β 4 、早獨如升預型件溫度相對較 二。(在習知方法中，由於與疊片組中的中間預 里件比杈杈咼暴露於加埶， 最高水準化水外同樣Γ 頂部和底部具有 =性，可跨相鄰環形預型件之徑向寬度提供更均勻溫度： 意:然=二際具體實施例描述本發明，但應特· k僅作為貫例，且適當修改 範圍的主旨㈣圍内亦為可b ㈣力I專利 【圖式簡單說明】 麥考附圖將更佳理解本發明，其中： 圖1顯不用於使堆疊的環形預型件緻密化之處理室； 圖示用於分開圖丨中所示堆疊的環形預型 片疋件之佈置； ^ ^ 例圖3❿顯示根據本發明之單片式分隔片元件之第一實 例圖4a★顯示根據本發明之單片式分隔片元件之第二實 〜c顯示根據本發明之單片式分隔片元件之第三實 93555.doc 13 1332901 例。 明碎強調的是，本文中各圖只說明本發明之實例，而不 作為以任何方式限制其定義解釋。亦應注意到，以通常或 相關觀點’本文中各圖不一定按比例繪製。 【主要元件符號說明】 10 封閉空間 10a 封閉空間之底部 10b 蓋 11 盤 12 中間載盤 14 基座 16 感應線圈 17 鑄件 18 預熱器區域 20 環形預型件或基材 22 間隙 24 内部容積 26 外部容積 30 隔片（環形分隔片元件） 300 環形分隔片元件 302a » 304a 一般規則形狀高起部分 302b > 304b 相對低下部分 306 組成材料 400 環形分隔片元件 93555.doc 14 1332901 402a ， 404a 402b ， 404b 500 502a ， 504a 502b > 504b 相對高起部分 相對低下部分 環形分隔片元件 相對rfj起部分 低下部分A cross-sectional elevational view of the piece 300. Knife spacer 7G annular spacer element 300 has a plurality of discrete portions which are alternated between (10) and their sides (some indicated at 304b). Ρη-like „ - Ρ 替 替 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样 同样In 3(4), it is alternated. 93555.doc 丄 In this real column φ, tip can be used as the edge of the portion 302a, 304a on the other side of the ring to the edge of the corresponding height. For example, see 2 The conventional spacer element 30 mentioned above provides a greater weight and area. Thus, the weight of the lamination stack is spread over a larger area, and negative: not concentrated in a conventional manner that causes a relatively severe effect in a conventional method corresponding to conventional spacer elements such as positioning. The lower portion 302b, 3〇4b defines that the densified gas can be self-stacked from the radially extending passage or the air flow in the outer portion of the annular pre-element. The collective cross-sectional area of the dense gas flow is generally as described above. Depending on the particular operating conditions, the H-face fabric should often be comparable to the one used when using the conventional spacer element 3G mentioned above. In Figures 4a 4c, Figure 4a is a top plan view of an annular spacer element in accordance with the present invention. Figure 4b is a perspective view of the annular spacer member. Figure 2 is a cross-sectional elevational view of the planar spacer element 40 in a plane perpendicular to the plane of the annular spacer element. The annular spacer element _ structure is similar to the annular spacer element traverse in that both sides of the 纟 have a relatively high rise portion 4 center, and the deviation is relatively low at the lower portion 402b ′ 4G4b intersection #. Here, the relatively low-profile portion also defines a radially extending channel or airflow path through which the densified gas can flow from the interior of the stacked annular preform to its exterior. As can be seen in Figure 3c, the structure of the annular spacer element is defined relative to the core plane thickness of the implant material 306. Therefore, a straight circumferential path can be tracked around the outer edge of the annular spacer element 300. In contrast, since the annular spacer element 400 is relatively thinner than the annular spacer element 93555.doc 1332901 300 ', there is no comparable planar thickness of the constituent materials therein. Therefore, the wave path (corresponding to the alternating raised portion and the lower portion) can only be tracked along the outer edge of the annular spacer element 400. (See, for example, Figure 4c). Also in Figures 5a-5C, Figure 5a is a top plan view of an annular spacer element 5〇〇 in accordance with the present invention. Figure 5b is a perspective view of the annular spacer element 5 (10). Fig. & is a cross-sectional elevational view of the spacer member 500 in a plane perpendicular to the plane in which the annular spacer member 5 is laid flat. The most common difference between the annular spacer element 500 and the annular spacer elements 3〇〇 and 4〇〇 is that the relatively high rise portion 5〇=, 5〇4a of the opposite side of the annular spacer element 5 is aligned as low Part 5 pupils, 5 inches. See especially & The front 'lower portion 5G2b, 5〇413, at least partially defines a passage through which the densified gas can pass between the interior of the stacked annular preform and its exterior. In one example, the annular separator element 500 may be fabricated from the viewpoint of forming a corresponding channel 5G2b '5G4b on the opposite side of the graphite flavor material, and the blank corresponds to the raised portion 5〇2a' 5〇乜. The position has an initial thickness at least at the thickness level of the annular separator element 500. As mentioned above, the aforementioned geometry can be obtained by any known suitable method, in particular the kernel is not only obtained by machining or molding or both. The separator element according to the invention is used for composite carbon ring opening: in the case of a preform, sometimes there is a separator element after the densification process and then to the pre- 1 «I to solve this problem, the invention is covered on the surface of the separator element A release coating is provided to help avoid this. An example of a useful release coating includes a second layer formed on the separator element and formed of Al2〇3 formed on the first layer. No. 93555.doc 12 ujzyui two layers. For example, these layers can be formed by using a known layer as a bridging layer to improve the jetting method. Art: Liangzhu! 2〇3 layer to the structure. Main The spacer element has 1 = Γ graphite spacer element during manufacture. Typically, the annular preform is shackled... "70 pieces increase the thermal mass of the laminated set to promote heating and promote densification by two people. There is a β 4 in the moving, and the temperature of the preform is relatively the same as in the early ones. (In the conventional method, since the intermediate pre-tiling in the laminated group is exposed to the twisting, the highest level is outside the water. Similarly, the top and bottom have a =, which provides a more uniform temperature across the radial width of the adjacent annular preform: meaning: the specific embodiment describes the invention, but should be only a general example, and The subject matter of the appropriate scope of modification (4) is also a b (four) force I patent [simplified description of the drawings] The invention will be better understood in the drawings, wherein: Figure 1 is not used to densify the stacked annular preforms. Processing chamber; illustrated for the arrangement of the stacked annular pre-sheet elements shown in the separate drawing; ^ ^ Example Figure 3 shows a first example of a monolithic separator element according to the present invention. Figure 4a ★ shows according to the present The second solid ~c of the inventive monolithic separator element is shown according to the present The third embodiment of the invention is a third embodiment of the monolithic separator element. 9355.doc 13 1332901. It is emphasized that the figures herein only illustrate examples of the invention and are not intended to limit the definition of the definition in any way. In the ordinary or related aspects, the drawings are not necessarily drawn to scale. [Main component symbol description] 10 Closed space 10a Bottom of closed space 10b Cover 11 Disk 12 Intermediate carrier 14 Base 16 Induction coil 17 Casting 18 Preheating Area 20 annular preform or substrate 22 gap 24 internal volume 26 outer volume 30 spacer (annular spacer element) 300 annular spacer element 302a » 304a general regular shape raised portion 302b > 304b relatively low lower portion 306 Material 400 annular spacer element 93555.doc 14 1332901 402a , 404a 402b , 404b 500 502a , 504a 502b > 504b relatively high rise portion relatively low lower portion annular spacer element partial lower portion relative to rfj
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