摘要:
The device comprises a system for unwinding a portion of the web material from the log R, and a system for rewinding the tail end on the log after application of an adhesive. Moreover, a folding member 21 is provided, to fold the tail end and form a fold of web material defining a portion for gripping and detaching the folded loose end from the roll.
摘要:
An apparatus for producing a composite pipe having a desired wall thickness by using an endless steel belt as a mold which moves axially while rotating in the circumferential direction of a mandrel. In this apparatus, a thickness regulating device spaced a predetermined distance from the outside surface of the endless steel belt is used to adjust the wall thickness accurately to the desired value. Examples of the thickness regulating device are a cylinder roll, a taper roll, and a conveyor belt.
摘要:
A novel method for producing a composite pipe having a desired wall thickness by using an endless steel belt as a mold which moves axially while rotating in the circumferential direction of a mandrel. In this method, a thickness regulating device spaced a predetermined distance from the outside surface of the endless steel belt is used to adjust the wall thickness accurately to the desired value. Examples of the thickness regulating device are a cylinder roll, a taper roll, and a conveyor belt.
摘要:
Provided is an apparatus for preparing an aerogel blanket, the apparatus comprising: a bobbin around which a blanket is wound; a body provided with a gelling tank in which the bobbin is accommodated; a driving member configured to allow the bobbin accommodated in the gelling tank to rotate; and a silica sol supply member configured to gelate the blanket as silica sol is injected into the gelling tank to impregnate the blanket rotating by the bobbin.
摘要:
Systems and methods for manufacturing unidirectional fiber prepreg tapes for CMC articles are provided. In one exemplary aspect, the method includes casting a matrix material on a carrier film to form a matrix film. The matrix material of the matrix film is then allowed to dry for a predetermined time. The matrix film is then wrapped on a drum and the matrix material is wet to a predetermined viscosity with a solvent. Thereafter, a fiber tow that includes of a plurality of fibers is wound about the drum so that the fiber tow penetrates into the matrix material and the matrix material impregnates the fiber tow to form the prepreg tape.
摘要:
In the manufacture of insulating shells formed by a felt of mineral fibers wound around a mandrel, main pressing elements intervene as soon as the winding begins and remain in contact with the surface of the shell during the entire winding phase. Auxiliary pressing elements intervene only when the shell, during shaping, has reached a given outside diameter of, for example, 200 mm. The invention applies particularly to the insulation of conduits of small and average outside diameters.
摘要:
To provide asbestos-cement and like sheets which are formed by build-up of a thin film on a rotating size roll, with an embossed patterned surface; a flexible mold layer of epoxy resin or like moldable material having counterpart embossments molded thereon, is removably wrapped about and secured to the size roll with its patterned side outward and before commencement of film build-up on the roll.
摘要:
A method includes a slurry preparing process of preparing a ceramic powder slurry, an impregnating process of impregnating the slurry into an inorganic fiber sheet to form an impregnated sheet, a sheet winding process of winding an impregnated sheet around a core to form a sheet-wound core, a pressing process of disposing the impregnated sheet between a first mold and a second mold opposed to each other and interposing a spacer therebetween at a portion where the impregnated sheet is not positioned, and then clamping the first mold and the second mold with a first fastener to come close in a direction facing each other, thereby applying pressure to the impregnated sheet, a drying process of heating and drying the impregnated sheet, and a firing process of firing the sheet after drying.
摘要:
Disclosed is a method for preparing graphite film, comprising steps as follows: 1) winding; 2) carbonizing at a low temperature; 3) graphitizing at a high temperature; 4) unwinding and feeding, winding up the electrographite film semi-finished product and flexible graphite paper separately; 5) calendaring to press the electrographite film semi-finished product against release film or protective film; 6) winding up and packaging. The winding process comprises steps as follows: a. winding high temperature resistant elastic material around the graphite cylinder core; b. bonding macromolecular film to flexible graphite paper, and then winding around the graphite cylinder core based on step a; c. when the macromolecular film and flexible graphite paper wound in step b reach the predetermined thickness, securing with carbon cord.
摘要:
In the manufacture of insulating shells formed by a felt of mineral fibers wound around a mandrel, main pressing elements intervene as soon as the winding begins and remain in contact with the surface of the shell during the entire winding phase. Auxiliary pressing elements intervent only when the shell, during shaping, has reached a given outside diameter of, for example, 200 mm. The process applies particularly to the insulation of conduits of small and average outside diameters.