75 results about "Spin casting" patented technology

A mixed matrix membrane which is porous and has a cross section resembling a sponge. The membrane includes nanoparticle fillers which are also porous. The membrane may be freestanding or supported on a substrate. Methods of making the membrane by spin casting or solvent casting are described. Methods of separating a gas/organic vapor using the membrane are described.

A system for manufacturing an elastomeric tire utilizing a separate formation of a package having a tire core shape and containing tire belts, plies and beads. The package is formed by a laying up of layers of pre-cure elastomer intradigitated with sections of porous fabric, where the fabric fibers are placed at desired crossing angles to one another, and the pre-cure elastomer layers are positioned therebetween as a sandwich, with the sandwich then cold rolled into the tire core shape. Inelastic hoop shaped beads are fitted to and encapsulated in the tire core side walls ends and, as required, an inelastic belt is fitted around the tire core tread area that is secured thereto as by cold rolling a layer of pre-cure elastomer thereover, completing the tire core package. The tire core package is fitted into a mold, preferably a spin casting mold, and is supported therein equidistant from the mold cavity walls to receive an elastomer sprayed therein as the mold is spun. During spinning, the exothermic heat of reaction of the sprayed elastomer constituents as is generated as they are mixed and sprayed into the mold, completes the cure of the pre-cure elastomer, providing a homogenous finished tire with the belts, plies and beads optimally positioned therein.

This invention relates generally to an apparatus for rotationally casting a portion of a tire, and, more specifically, to an apparatus that has a floating alignment mechanism that allows a portion of a mold to move in the radial direction of the tire, which it, at least; partially forms, allowing the molding apparatus to omit, the use of tie bars. The mechanism may comprise two set of needle roller bearings that are orthogonally arranged to allow radial movement of a portion of a mold.

A pre-cast concrete wall system for crawlspace applications is herein disclosed. The system includes a plurality of interconnected pre-cast concrete wall panels having a recessed area along one side to reduce concrete usage and weight, while maintaining load bearing properties. The wall panels are securely fastened to a substructure, such as footers, using anchors and to each other by opposingly aligned keyways and connecting fasteners. Each wall panel includes at least one (1) pair of leveling bolts which provides for the leveling of the wall panels and correct for any unevenness in the footer. The wall panels are fabricated using a rotating casting table which allows an operator to pour concrete at ergonomic heights and rotate the casting table and cured wall panel member to a vertical position for convenient unloading and transportation of the wall panel to a job site.

A process to modify a surface to provide reduced adhesion surface properties to mitigate insect residue adhesion. The surface may include the surface of an article including an aircraft, an automobile, a marine vessel, all-terrain vehicle, wind turbine, helmet, etc. The process includes topographically and chemically modifying the surface by applying a coating comprising a particulate matter, or by applying a coating and also topographically modifying the surface by various methods, including but not limited to, lithographic patterning, laser ablation and chemical etching, physical vapor phase deposition, chemical vapor phase deposition, crystal growth, electrochemical deposition, spin casting, and film casting.

The invention relates to a spin-casting device and a spin-casting centrifugal disk. The spin-casting device comprises a fixed frame, the fixed frame is provided with a crucible for holding metal raw materials in a molten state, a centrifugal disk body is arranged under the crucible, and the centrifugal disk body rotates at a high speed to atomize and throw out the metal raw materials and the metalraw materials are attached to the inner wall of a cylinder-shaped die; and the centrifugal disk body is further provided with a cooling medium flow channel, and a cooling medium can cool the disk surface of a disk body. The cooling medium is led to the cooling medium flow channel of the centrifugal disk body in the centrifugal disk body to cool the disk surface, and when the metal raw materials are poured downwards onto the centrifugal disk body by a flow guide pipe under the crucible, heat exchange is carried out between the metal raw materials and the disk surface, so that heat of the metalraw materials is reduced, cooling can be carried out faster; and in the process of throwing out, the metal raw materials can form semi-solid droplets smoothly, and the phenomenon of sample collapse due to the fact that the atomized particles still keep in a liquid state when colliding with the inner wall of the cylinder-shaped die and the droplets on the die fuse and flow together is avoided, sothat a produced metal hollow ingot has a flat surface, uniform thickness and small grain size.

Disclosed are a novel aromatic enediyne derivative, an organic semiconductor thin film using the same, and an electronic device. Example embodiments pertain to an aromatic enediyne derivative which enables the formation of a chemically and electrically stable and reliable semiconductor thin film using a solution process, e.g., spin coating and/or spin casting, at about room temperature when applied to devices, an organic semiconductor thin film using the same, and an electronic device including the organic semiconductor thin film. A thin film having a relatively large area may be formed through a solution process, therefore simplifying the manufacturing process and decreasing the manufacturing cost. Moreover, it is possible to provide an organic semiconductor that may be effectively applied to various fields including organic thin film transistors, electroluminescent devices, solar cells, and memory.

For use in a rotational casting machine used for coating a rotating body with elastomer, such as polyurethane, there is provided a nozzle used for dispensing the liquid polyurethane onto the rotating body to be coated. The nozzle of the invention has a plurality of liquid-flow interior discharge-passageways each of which has an inlet connected to a sub-branch tube, which sub-branch tube is, in turn, is fluidly connected to a main branch that, in turn, is connected to a main inlet-passageway having the inlet that is directly connected to mixing head. Each discharge-passageway, or exit-passageway, changes in cross-sectional shape along the longitudinal axis thereof from its inlet to its outlet such that the cross-sectional area from the inlet to the outlet thereof gradually and minimally increases, whereby at least substantial laminar flow of the liquid is achieved with the concomitant reduced dwell-time of the liquid therein, in order to reduce in-nozzle reaction and subsequent clogging of the nozzle. The exit of the nozzle itself is constituted by the plurality of spaced-apart exit-openings or outlets of the discharge-passageways, where each such exit-opening or outlet is formed as a narrow, elongated slit or opening.

The invention discloses a rotating casting method capable of achieving any mold filling force by virtue of centrifugal force and gravity. According to the technical scheme, a rotating disk capable of rotating at any speed is constructed, the center of the rotating disk is a sprue gate around which a horizontal pouring gate is arranged, the outer side of the horizontal pouring gate is a die position, a die is arranged at the die position, and a gate of the die is connected with the tail end of the horizontal pouring gate; during casting, the rotating disk rotates at certain speed, and poured molten metal flows outwards along the pouring gate under the action of the centrifugal force, and is injected into the mold for mold filling. According to the rotating casting method, the limitation of conventional gravity to the mold filling force is broken, complex pressurization equipment is not required, and requirements on the precision of the equipment are greatly lowered; different mold filling pressure can be achieved only by adjusting the rotating speed of the rotating disk, convenience in adjustment, high adjustment speed and adjustment reliability are ensured, and the rotating casting method is a new mold filling pressure-adjustable casting method.

By rotationally casting soft robots, no bonding of different material layers is required. Soft robots including one or more integrated enclosed compartments are constructed from fibers that are embedded directly into the mold prior to adding elastomeric precursors.

An apparatus for spin casting lenses includes a rotatable tube, the rotatable tube defining a longitudinal cavity, wherein the longitudinal cavity is configured to receive molds. According to one exemplary embodiment, the rotatable tube is made of metal and includes a plurality of apertures configured to permit the transmission of actinic radiation.

Systems, apparatus, methods, and articles of manufacture that provide for a thermistor furnace, such as for melting, casting, and/or smelting loads (e.g., precious metals, other metals such as titanium, and/or thermoset plastics), are provided. In some embodiments, the thermistor furnace may comprise a vacuum spin casting apparatus capable of utilizing various types and configurations of molds, such as graphite and/or plaster molds.

The invention belongs to the technical field of metal casting, and relates to an aluminum alloy hub spinning casting process. The process comprises the steps: injecting molten aluminum into a mold cavity, spinning a rim blank out after a wheel disc is cast; carrying out cooling treatment, demolding, and carrying out spinning casting, wherein during the cooling treatment, the blank preheating temperature is 410-450 DEG C, the front surface of the blank is cooled in water at the temperature of 45-55 DEG C for 4-6 s after being discharged from the furnace, no water enters a rim body, the rim bodyis cooled in air, and spinning is started when the temperature of the mold is 200-240 DEG C, the temperature of the front surface of the blank is 180-220 DEG C and the temperature of the rim blank is360-400 DEG C; removing a blank sprue; and carrying out heat treatment, surface shot blasting, machining and surface coating or electroplating treatment on the blank. An optimized cooling method is adopted for the spinning blank, so that the temperatures of all parts of the blank are different, the blank is more suitable for the spinning process, and product deformation and extrusion defects areeffectively reduced; and the proper feeding speed is designed, the rim defects of the product are reduced, and the skin pulling and crack defects of the product can be effectively reduced.