Expandable/flexible constraint fixture for carbonization of carbon-carbon preforms
    1.
    发明公开
    Expandable/flexible constraint fixture for carbonization of carbon-carbon preforms 审中-公开
    灵活的Halterungfürdas Aufkohlen der kohlenstoffhaltigenVorkörpern

    公开(公告)号:EP1734021A2

    公开(公告)日:2006-12-20

    申请号:EP06115478.7

    申请日:2006-06-14

    IPC分类号: C04B35/52

    摘要: Constraint fixture for processing annular preforms. The constraint fixture is made up of a lower plate, a top plate, a ring for the outside diameter of an annular preform being treated within the constraint fixture, and a ring for the inside diameter of the annular preform. The outside diameter and inside diameter rings are made of thin flexible sheet metal strips or thin flexible carbon-carbon composite strip material. The thin flexible strips are joined together by deformable joints, so that the flexible constraint system retains pitch within the fibrous matrix of the preform. The outside diameter strips may be joined together by expandable joints and the inside diameter strips may be joined together by collapsible joints. Also, a method of avoiding damage to an annular fibrous preform, e.g., an aircraft brake disc preform, during a carbonization procedure. This method involves carbonizing the annular fibrous preform in the constraint fixture of the invention.

    摘要翻译: 用于加工环形预制件的约束夹具。 约束夹具由下板(2),顶板(11),用于在约束夹具内处理的环形预制件的外径的环(4)和用于内部的环(10) 环形预制件的直径。 外径和内径环由薄的柔性金属片或薄的柔性碳 - 碳复合带材制成。 薄的柔性条通过可变形接头连接在一起,使得柔性约束系统在预成型件的纤维基质内保持间距。 外径条可以通过可伸缩接头连接在一起,并且内径条可以通过可折叠接头连接在一起。 另外,在碳化过程中避免损坏环形纤维预成型件,例如飞行器制动盘预制件的方法。 该方法包括在本发明的约束夹具中碳化环状纤维预制件。

    Expandable/flexible constraint fixture for carbonization of carbon-carbon preforms
    2.
    发明公开
    Expandable/flexible constraint fixture for carbonization of carbon-carbon preforms 审中-公开
    对于含碳前驱体的渗碳灵活的支持

    公开(公告)号:EP1734021A3

    公开(公告)日:2008-04-16

    申请号:EP06115478.7

    申请日:2006-06-14

    摘要: Constraint fixture for processing annular preforms. The constraint fixture is made up of a lower plate (2), a top plate (11), a ring (4) for the outside diameter of an annular preform being treated within the constraint fixture, and a ring (10) for the inside diameter of the annular preform. The outside diameter and inside diameter rings are made of thin flexible sheet metal strips or thin flexible carbon-carbon composite strip material. The thin flexible strips are joined together by deformable joints, so that the flexible constraint system retains pitch within the fibrous matrix of the preform. The outside diameter strips may be joined together by expandable joints and the inside diameter strips may be joined together by collapsible joints. Also, a method of avoiding damage to an annular fibrous preform, e.g., an aircraft brake disc preform, during a carbonization procedure. This method involves carbonizing the annular fibrous preform in the constraint fixture of the invention.

    Impregnation of stabilized pitch fiber performs with pitch during the preforming process
    5.
    发明公开

    公开(公告)号:EP1903016A1

    公开(公告)日:2008-03-26

    申请号:EP07116700.1

    申请日:2007-09-18

    IPC分类号: C04B35/83

    摘要: An improved carbon-carbon composite and method of preparation. Thp carbon-carbon composite comprises a plurality of carbon fibers agglomerated and joined or consolidated together typically into a preform. The carbon fibers are impregnated with pitch prior to carbonization in order to enhance the density of the carbonized preform. The method comprises adding pitch powder to a preform and melting the pitch powder so as to uniformly impregnate the carbon fibers, thus enhancing the carbonized density of the preform.

    摘要翻译: 改进的碳 - 碳复合材料及其制备方法。 Thp碳 - 碳复合材料包括多个碳纤维,其聚集并通常结合或固结在一起成型为预制件。 在碳化之前,将碳纤维浸渍沥青,以增强碳化预制件的密度。 该方法包括向预成型体中加入沥青粉末并熔化沥青粉末以均匀地浸渍碳纤维,从而提高预成型体的碳化密度。

    Carbon-carbon composite preform made with carbon fiber and pitch binder
    6.
    发明公开
    Carbon-carbon composite preform made with carbon fiber and pitch binder 审中-公开
    材料为碳纤维和沥青粘合剂的碳 - 碳复合材料

    公开(公告)号:EP1724245A1

    公开(公告)日:2006-11-22

    申请号:EP06252609.0

    申请日:2006-05-19

    IPC分类号: C04B35/83 F16D69/02

    摘要: Process for producing carbon-carbon composite preform, by: providing short carbon fiber segments or short carbon fiber precursor segments; providing pitch in particulate form; combining blend comprising the fiber segments and pitch particles in a mold; subjecting the resulting mixture of fibers and pitch in the mold to an elevated pressure ranging at a temperature above the melting/softening point of the pitch to create an uncarbonized preform; cooling the preform to below its softening point and removing it from the mold; placing the preform in a constraint fixture; and carbonizing the combined components in the constraint fixture at an elevated temperature for a period of time of sufficient to provide a preform having a density in the range 0.8-1.6 grams per cubic centimeter.

    摘要翻译: 用于生产碳 - 碳复合预制件,通过:提供短的碳纤维段或短的碳纤维前体片段; 提供颗粒形式的沥青; 组合刺眼包括在模具中的纤维段和沥青颗粒; 在升高的压力在范围的节距来创建在未碳化预成型件的熔化/软化点以上的温度下纤维在模具中所形成的混合物和俯仰经受; 所述预成型件冷却到低于其软化点,并从模具中取出; 放置在约束夹具的预成型件; 并在上升高的温度下一段充足的时间碳化在约束夹具组合的组分,以提供具有在每立方厘米的范围内0.8-1.6克的密度的预成型件。