A method of manufacturing a heat exchanger core from glass ceramic matrix composite includes placing one or more reinforcing fibers around one or more mandrels into a mold cavity. A glass matrix material infiltrates the one or more reinforcing fibers to produce an infiltrated core and the one or more mandrels is removed to create one or more passages passing through the infiltrated core.

The present invention relates to a feedstock for a Injection Molding Process, consisting of sinterable particles P made from a metal, a metal alloy, a cermet, a ceramic material, a glass, or a mixture of any of these; and a binder composition B, the binder composition B comprising a binder polymer B1, a polymeric compatibilizer B2, and optionally a release agent B3, and a MIM manufacturing process using the same.

An apparatus for dispensing hot glass during 3D printing includes a crucible with a cylindrical barrel open at a proximal end and an aperture at a distal end, a holder-actuator to hold a glass rod feedstock and move the feedstock into and within the barrel, a first heater on or adjacent the outer surface of the barrel, and a second heater on or adjacent the outer surface of the barrel energized independently, and positioned proximally, of the first heater. A method of dispensing glass during 3D printing includes feeding a glass rod feedstock into the proximal, open end of a crucible having an aperture at its distal end while maintaining the crucible at a first position within a first temperature range and maintaining the crucible at second position, proximal of the first position, within a second temperature range lower than the first temperature range.

A glass article manufacturing system (10) includes a crucible (38) that defines a barrel (46) and a nozzle (54). The barrel (46) accepts a glass feedstock (62). A heater 66 is in thermal communication with the nozzle (54). The heater 66 heats the feedstock (62) within the nozzle (54). An actuator (22) is positioned proximate the barrel (46) and extrudes the feedstock (62) through the nozzle (54) as extruded feedstock.

An additive manufacturing device is provided and includes a housing, a printing bed, a printing head and a controller. The printing bed is rotatably disposed in the housing and includes a surface and a body. The body defines an air conduit terminating at an open end at the surface and is fluidly communicative with an exterior of the housing. The printing head is movably disposed in the housing and configured to print molten glass material onto the printing bed at a location corresponding to the open end of the air conduit. The controller is configured to control movements and printing operations of the printing head, rotations of the printing bed and airflow to the molten glass material through the air conduit.

An organic-inorganic composite, including: a discontinuous phase having a plurality of adjacent and similarly oriented fibers of an inorganic material; and a continuous organic phase having a thermoplastic polymer, such that the continuous organic phase surrounds the plurality of adjacent and similarly oriented fibers of the inorganic material, and the organic-inorganic composite is a plurality of adjacent and similarly oriented fibers of inorganic material contained within a similarly oriented host fiber of the thermoplastic polymer. Also disclosed are methods of making and using the composite.

In the conventional direct press method, it was difficult to control the weight of molten glass gob when manufacturing a small precision glass component and thus the weight of the glass gob varies widely. Accordingly, the problem is that the precise molding cannot be expected stably. As a solution, the present invention provides a mold for molding a glass-made optical component and a manufacturing method using the mold, the mold comprising: a female mold which has a lower mold of a molding mold for molding the glass-made optical component on an outer peripheral portion of a concave surface of the female mold; a male mold which has a convex surface combined with the concave surface of the female mold; and a ring mold which is arranged on an outer peripheral portion of the male mold, the ring mold having an upper mold of the molding mold for molding the glass-made optical component, wherein molten glass gob introduced into the concave surface of the female mold is configured to be pressed from above by the male mold having the convex surface so that the molten glass gob is injected into a space formed between the lower mold and the upper mold of the molding mold.

A pair of moulds for moulding an optical component is disclosed. The pair of moulds includes a first mould having a first surface, and a second mould having a second surface. The first surface includes a moulding portion for moulding a first optical surface of the optical component, and an alignment portion for alignment with the second mould. The alignment portion extends around the moulding portion. The second surface includes a moulding portion for moulding a second, opposite optical surface of the optical component, and an alignment portion for alignment with the first mould via a contact with the alignment portion of the first surface. When the moulds are brought together, they self-align. A corresponding moulding apparatus and a method may use the mould pair to manufacture various optical components.

This invention relates to processes and systems of rapid prototyping and production. Its features includes flexible material deposition along tangential directions of surfaces of a part to be made, thereby eliminating stair-shape surface due to uniform horizontal layer deposition, increasing width of material deposition to increase build up rate, applying the principles of traditional forming/joining processes, such as casting, fusion welding, plastic extrusion and injection molding in the fabrication process so that various industrial materials can be processed, applying comparatively low cost heating sources, such as induction heating and arc-heating. Additional features include varying width and size of material deposition in accordance with geometry to be formed and applying a differential molding means for improved shape formation and surface finishing.

A method of molding a product including an undercut part or a right-angle part includes providing a female mold, a first male mold and a temporary mold to form a first molding chamber, wherein a boundary between a core and a lifter of the first male mold is located outside the first molding chamber; performing a first injection into the first molding chamber to mold a first portion of the product including the undercut part or the right-angle part; removing the temporary mold; replacing the first male mold with a second male mold to form a second molding chamber, wherein a boundary between a core and a lifter of the second male mold is located outside the second molding chamber; and performing a second injection into the second molding chamber to mold a second portion of the product integrally formed with the first portion of the product.