摘要:
Dielectric welding apparatus has opposed electrodes that can be engaged on either side of a product to be welded and a dielectric welding power supply that supplies welding potentials to the electrodes. The apparatus includes electrically insulating buffer material adjacent to at least one of the electrodes. A recess formed in a surface of the buffer material receives an end of an electrically-conductive member in the product. The buffer material prevents arcing between the electrodes and the electrically-conductive member.
摘要:
The present invention is directed to a method for preparing or repairing a machine foundation by using a hollow form which surrounds vertically extending reinforcement rods and is filled with a fortifying material to secure the hollow form to a slab. The form is preferably made of an aggregate filled thermosetting resin or a thermoplastic resin which are corrosion and chemical resistant materials free from fluid attack such as the liquids in the machine, for example, in a pump the fluids being either the lubricating fluids or the fluids being pumped. More particularly, the present invention is directed to a hollow form which may be used either to prepare a machine foundation or to repair a degraded slab or foundation and preferably is a single form.
摘要:
The invention pertains to a method for manufacturing a three-dimensional object with an additive manufacturing system, such as an extrusion-based additive manufacturing system, a selective laser sintering system, and/or an electrophotography-based additive manufacturing system, comprising providing a support material comprising more than 50% wt. of a semi-crystalline polyamide [polyamide (A)] having a melting point, as determined according to ASTM D3418, of at least 250° C. and possessing a water absorption at saturation, by immersion in water at 23° C., of at least 2% wt.
摘要:
A film tube installed and sealed in a hollow composite part acts as an internal vacuum bag that eliminates the need for an internal mandrel to react compaction forces applied by autoclave pressure during curing of the part.
摘要:
A method for forming a shaped composite structure. The method includes laying a composite laminate stack (12) onto a mold (18), where the composite laminate stack (12) comprises fabric laminate (14,16) and resin and wherein the mold (18) presents a predetermined shape, draping a vacuum film (22) comprising polyethylene onto the composite laminate stack (12), thereby establishing an evacuatable volume between the vacuum film (22) and the mold (18), applying suction to the evacuatable volume between the mold (18) and the vacuum film (22) to establish at least a partial vacuum within the evacuatable volume, thereby compressing the composite laminate stack (12) via pressure applied to the vacuum film (22) responsive to the at least partial vacuum within the evacuatable volume, and heating the composite laminate stack (12) while applying suction to the evacuatable volume, thereby at least partially consolidating the laminate stack (12).
摘要:
A composite fibre component for a rotor blade of a wind power plant having a first surface, shaped in a predefined fashion, on a first side of the composite fibre component. The composite fibre component is developed such that the composite fibre component has a second surface, shaped in a predefined fashion, for connecting to a further component for the rotor blade on at least one partial area of a second side, facing away from the first side, of the composite fibre component. A manufacturing device for manufacturing a composite fibre component for a rotor blade of a wind power plant by using a vacuum infusion method, and to a method for manufacturing a composite fibre component for a rotor blade of a wind power plant by using a vacuum infusion method.
摘要:
Dielectric welding apparatus has opposed electrodes that can be engaged on either side of a product to be welded and a dielectric welding power supply that supplies welding potentials to the electrodes. The apparatus includes electrically insulating buffer material adjacent to at least one of the electrodes. A recess formed in a surface of the buffer material receives an end of an electrically-conductive member in the product. The buffer material prevents arcing between the electrodes and the electrically-conductive member.