摘要:
A method for producing a mold for making an integrally formed three-dimensional truss structure, containing outer top and bottom plane surfaces thereof comprising interconnected rod segments integrally formed at their points of intersection on the outer top and bottom surfaces, the top and bottom surfaces also integrally joined together through additional interconnected rod segments passing through an integrally formed intersection, wherein the additional interconnected rod segments passing through the integrally formed intersection form a three-dimensional continuous array of triangles.
摘要:
A casting includes a heat tranfer surface having a pluality of cavities. The plurality of cavities includes a density of at least about 25 cavities per square centimeter to about 1,100 cavities per square centimeter resulting in increased surface area and therefore enhanced heat transfer capability. Also disclosed is a mold for forming a pattern for molding the casting. The mold includes a surface defining a portion of a chamber to which are attached a plurality of particles having an average particle size in a range of about 300 microns to about 2,000 microns.
摘要:
A method of molding a jewelry ring having a beveled or rounded inner diameter and a hollow portion in a vertical mold comprises utilizing a multi-piece plug and a soluble insert in a mold to define a mold cavity in the desired shape of the ring or a portion of the ring. A molten material is introduced into the mold cavity and upon hardening forms a ring replica which is removed from the mold by first removing the formed ring replica from the mold halves and then removing the ring replica from the multi-piece plug by separating the multi-piece plug into its individual pieces. The ring replica can be used to form jewelry rings by investment casting.
摘要:
A fingerprint jewelry includes any jewelry with a person's fingerprints cast in relief onto its surface. It is made by pressing a finger on a sheet of pliable wax medium to imprint it with fingerprints in relief. In a first embodiment, the wax medium is comprised of a soft wax medium soft enough to be imprinted at room temperature. In a second embodiment, the wax medium is comprised of a soft wax medium supported on a hard wax medium. The imprinted wax medium is positioned in a hollow form. A mold is created around the wax medium by pouring a mold material into the hollow form. An oven is used to harden the mold material and melt away the wax to leave a mold cavity. Molten precious metal is cast into the mold cavity with a casting machine to produce a casting with the fingerprints in relief. The casting is freed by breaking the mold. Additional work may be performed on the casting to produce a finished piece of jewelry. For example, the casting may be bent into a loop and welded closed to form a finger ring. The fingerprint jewelry thus provides a durable, unique, personal, and identifiable representation of the jewelry's giver or owner.
摘要:
A method for producing a golf club head includes preparing at least two wax models for the golf club head; combining the at least two wax models; coating the combined wax models with a layer of sand mortar to form a sand mortar mold; removing the wax from the sand mortar mold; pouring molten liquid into the sand mortar mold; breaking the sand mortar mold to leave a metal golf club head. The metal golf club head is further cut off any surplus metal and polished to complete a one-piece metal golf club head.
摘要:
A method for making personalized jewelry and the personalized product of this jewelry making method. The method includes digitally capturing the image of a person or other object. The image is saved as a digital profile and processed to create a numerical profile. The numerical profile includes prototyping machine instructions that cause a prototyping machine to produce a wax block that contains a replica of the scanned object. The wax block is placed in a warm bath so that an outer wax melts away and an inner wax of the scanned object remains. The wax replica is then used in a “lost wax process” to make a mold of the wax replica. The mold is then used in a casting process wherein the mold is injected with precious, semi-precious, or base metals to make a cast of the object. The finished product is a replica of the object with exacting features such as nose, eyes, ears, etc. Any cavity or flat surface can be colored with epoxies, resins, enamels, or decorated further to give color contrast. Partial and segregated replication can also take place. The present process truly creates “personalized” charms and pieces of jewelry.
摘要:
Method of rapidly making casting, comprising: designing a computer graphic model of the casting; sectioning the graphic model into graphic members which are at least one of blocks and slabs; carving a solid member for each of the graphic members, the solid members being (i) constituted of a meltable or evaporative solid material (i.e. wax or polystyrene), (ii) proportional to and enveloping its corresponding graphic member, and the carving being carried out by accessing two or more sides of each solid member to at least essentially duplicate the corresponding graphic member; forming a mold around the pattern, and casting metal within the mold while removing the pattern from such mold either by evaporation during pouring of the molten metal thereinto or by melting prior thereto.
摘要:
A fingerprint jewelry includes any jewelry with a person's fingerprints cast in relief onto its surface. It is made by pressing a finger on a sheet of pliable wax medium to imprint it with fingerprints in relief. In a first embodiment, the wax medium is comprised of a soft wax medium soft enough to be imprinted at room temperature. In a second embodiment, the wax medium is comprised of a soft wax medium supported on a hard wax medium. The imprinted wax medium is positioned in a hollow form. A mold is created around the wax medium by pouring a mold material into the hollow form. An oven is used to harden the mold material and melt away the wax to leave a mold cavity. Molten precious metal is cast into the mold cavity with a casting machine to produce a casting with the fingerprints in relief. The casting is freed by breaking the mold. Additional work may be performed on the casting to produce a finished piece of jewelry. For example, the casting may be bent into a loop and welded closed to form a finger ring. The fingerprint jewelry thus provides a durable, unique, personal, and identifiable representation of the jewelry's giver or owner.
摘要:
A method of forming a turbine engine component, includes providing a mold having a textured region, pouring a molten alloy into the mold, and cooling the molten alloy to form a turbine engine component, wherein the turbine engine component has an enhanced surface area region corresponding to the textured region of the mold, the enhanced surface area region comprising randomly arranged bumps.
摘要:
Method of making a shell mold for casting molten metals or alloys involves forming a thermally collapsible, low density reaction injection molded (RIM) thermosetting polyurethane foam pattern having a shape corresponding to the casting to be made. The pattern is formulated to have an aggregate density (pattern outer skin and pattern cellular core) in the range of about 10 to 15 lbs/ft3 and a smooth continuous as-molded surface devoid of surface connected open cells, dimensional stability over a range of temperatures, and ready, ashless burnout from the shell mold formed thereon without cracking the shell mold. The pattern is free of organometallic catalysts that should not be present in the casting of aerospace superalloys, such as nickel and cobalt base superalloys and titanium. The pattern then is invested without the need for any surface polymer or other film or layer in a shell mold.