摘要:
A mandrel (130) for a molding process. The mandrel (130) includes a first portion (132;334;434;534;634) that has a first draft surface (140;340;440;540;640) and a second draft surface (138;338;438;538;638). A second portion (148;348;448;548;648) and a third portion (158;358;458; 558 658) are included. The second portion (148;348;448;548;648) has a third draft surface (154;354;454;554;654) and the third portion (158;358;458; 558 658) has a fourth draft surface (164;364;464;564;664) wherein the first draft surface (140;340;440;540;640) engages the third draft surface (154;354;454;554;654) and the second draft surface (138;338;438;538;638) engages the fourth draft surface (164;364;464;564;664). A channel (174;372;472;572) extends along a length of the mandrel (130) at an interface between the first, second, and third portions such that the second portion (148;348;448;548;648) does not contact the third portion (158;358;458; 558 658).
摘要:
The invention relates to the production of a building structure made of a hardenable composition and fibres. The inventive method consists of in applying at least one layer of said hardenable composition and one fibre layer to a rotatable mandrel and repeating said operations by applying subsequent layers, drying and releasing a final product from the mandrel. The fibre is applied to a prefabricated cellular fabric through the entire height of said mandrel, the hardenable composition being applied perpendicularly to the direction of fibre application. Said invention can be used for producing modular elements for constructing residential and industrial buildings, elevators, sewage pipes etc.
摘要:
The invention relates to a flange for a self-supporting rigid hollow body having large dimensions and intended for building constructions, to a method for making such a hollow body using such flanges, and to equipment for implementing said method. The rigid flange (6) is intended to be part of a self-supporting rigid hollow body having large dimensions and intended for building constructions, of the type comprising a thin wall (4) having a generally cylindrical shape relative to an axis, made of a coating and resistance material containing concrete or the like and reinforced with fibres, and two such end flanges (6) oriented towards the outside, wherein said flange includes, on the hand, a main portion (9) generally in the shape of a flattened hollow cylinder to be visible in the body upon completion and, on the other hand, a talon (10) extending in an axial direction from a transverse face (11) of the main portion (9) and having inner radial overall dimensions equal to or close to the inner radial overall dimensions of the main portion (9), and outer radial overall dimensions lower than the outer radial overall dimensions of the main portion (9).
摘要:
The invention relates to the production of a building structure made of a hardening composition and fibres. The inventive method consists in applying at least one layer of said hardening composition and one fibre layer to a rotatable template and repeating said operation by applying subsequent layers, drying and releasing a final product from the template. The fibre is applied to a prefabricated cellular cloth along the entire height of said template, the hardening composition being applied perpendicularly to the direction of fibre application. Said invention can be used for producing modular elements for constructing residential and industrial buildings, elevators, sewage pipes etc.
摘要:
A mandrel (130) for a molding process. The mandrel (130) includes a first portion (132;334;434;534;634) that has a first draft surface (140;340;440;540;640) and a second draft surface (138;338;438;538;638). A second portion (148;348;448;548;648) and a third portion (158;358;458; 558 658) are included. The second portion (148;348;448;548;648) has a third draft surface (154;354;454;554;654) and the third portion (158;358;458; 558 658) has a fourth draft surface (164;364;464;564;664) wherein the first draft surface (140;340;440;540;640) engages the third draft surface (154;354;454;554;654) and the second draft surface (138;338;438;538;638) engages the fourth draft surface (164;364;464;564;664). A channel (174;372;472;572) extends along a length of the mandrel (130) at an interface between the first, second, and third portions such that the second portion (148;348;448;548;648) does not contact the third portion (158;358;458; 558 658).
摘要:
A method of forming a ceramic matrix composite (CMC) component having an internal cooling circuit includes wrapping at least a first sheet (22; 122) around a first mandrel (20; 120), wrapping at least a second sheet (22; 122) around a second mandrel (20; 120), creating a first plurality of holes (26; 126) in the first sheet (22; 122) corresponding to a plurality of openings (24; 124) in the first mandrel (20; 120), creating a second plurality of holes (26; 126) in the second sheet (22; 122) corresponding to a plurality of openings (24; 124) in the second mandrel (20; 120), aligning the first mandrel (20; 120) and the second mandrel (20; 120) such that the first plurality of holes (26; 126) face and are aligned with the second plurality of holes (26; 126), wrapping at least a third sheet (22; 122) around both the first mandrel (20; 120) and second mandrel (20; 120) to form a preform (28; 128), the preform (28; 128) comprising each of the first sheet (22; 122), the second sheet (22; 122), and the third sheet (22; 122), and densifying the preform (28; 128). The first sheet (22; 122), second sheet (22; 122), and third sheet (22; 122) are formed from a ceramic fiber material.
摘要:
Rbx1, an evolutionarily conserved Cullin-interacting RING-H2 finger protein, has been discovered. Mammalian Rbx1 has been identified as a component of the CUL2-containing VHL complex. An Rbx1 homolog from S. cerevisiae has also been identified as a subunit and activator of the Cdc53-containing SCFCdc4 ubiquitin ligase required for ubiquitination of the cdk inhibitor Sicl and for the G1/S cell cycle transition in yeast, providing a link between the multiprotein VHL tumor suppressor complex and cellular ubiquitination. The Rbx1 protein acts as a cellular marker useful (1) in detecting a possible predisposition to certain carcinomas, (2) as a molecular target for treating those carcinomas therapeutically, (3) as a target for inhibition by drugs that manipulate the growth of cells, and (4) as a research tool to better understand the various complex mechanisms of cell ubiquitination, binding of certain activator proteins, fibronectin deposition and other aspects of the cellular division process.
摘要:
A method for making a gas turbine engine matrix composite structure. The method includes providing at least one metal core element, fabricating a matrix composite component about the metal core element, and removing at least part of the metal core element from the matrix composite component by introduction of a halogen gas.