A method of additive manufacturing of a component includes cutting a plurality of sheets, each sheet corresponding to a respective cross-section of the component, tack welding the sheets to one another to form a stack, arranging the stack in a mold, and spark plasma sintering the tack-welded stack of sheets to reduce vacancies and dislocations between adjacent sheets of the stack.

A refrigerator cabinet is provided. The refrigerator cabinet includes an inner liner and an external wrapper. The inner liner is positioned within the external wrapper such that a gap is defined between the external wrapper and inner liner. A first insulator is positioned within the gap, and a second insulator is positioned within the gap. A pressure within the gap is below about 1000 Pa.

System and method of manufacturing a laminated three-dimensional (3D) metallic object. The method includes: providing a plurality of foils of metal; marking portions of some of the foils in the plurality of foils with a marking agent that includes a material having electrochemical potential higher than the metal; bonding the plurality of marked foils into a block; and selectively etching parts of the block not in proximity to the marking agent.

A ceramic crucible having an Al.sub.2TiO.sub.5 body with face layers of non-reactive ceramic and a method of making the crucible. The ceramic crucible is made by utilizing a plaster mold and forming a crucible body as backing material in the plaster mold with a slurry. The slurry is fired to form the crucible body of aluminum titanate. Non-reactive ceramic slurry is applied to the interior of the crucible body to a predetermined thickness, wetting the crucible body and then fired forming a non-reactive layer as the interior surface of the ceramic crucible. The non-reactive layer forming the interior surface of the ceramic crucible is more dense than non-reactive layers in prior art crucibles. The dense non-reactive layer forms a stronger bond with the crucible body, reducing the potential for delamination of the non-reactive layer when a reactive alloy is melted in the crucible by vacuum induction melting.

A method for manufacturing a vacuum insulated structure includes positioning an inner liner within an external wrapper and defining a gap between the inner liner and the external wrapper, drawing a vacuum to seal the gap, and injecting a first insulator into the gap. The method further includes positioning a filter proximate to the first insulator within the gap and injecting a second insulator into the gap proximate to the filter.

A seal structure is a seal structure configured to seal, by using a seal material, between a first opposing surface and a second opposing surface which are opposed to each other. A second part includes an insertion hole which is open on the second opposing surface and into which a fastener is inserted; a chamfered surface including a first end connected to an edge of the second opposing surface, the chamfered surface being inclined relative to the second opposing surface; an end surface including an edge connected to a second end of the chamfered surface, the end surface being inclined relative to the chamfered surface. A space sandwiched between the chamfered surface and the first opposing surface forms a chamfered portion accommodating the seal material protruding from between the first opposing surface and the second opposing surface.

The invention relates to a stator (8) for an electric rotating machine (2), which stator has a laminated stator core (16) having coil bars (20) and has at least one stator winding head board (24) having an insulating main body (28). In order to reduce the axial length of the stator (8), according to the invention, conducting tracks (26) are integrated into the insulating main body (28), wherein the at least one stator winding head board (24) lies on an end face (23) of the laminated stator core (16) and wherein the conducting tracks (26) are integrally bonded to the coil bars (20).

A method and a system are disclosed for making an article of manufacture from a blank defining an internal opening. A stack of blanks are aligned and the internal openings of the blanks in the stack of blanks are machined by a rotary cutting tool to a finished dimension. The blanks are clamped together before machining in a numerically controlled machine tool. The blanks are subsequently formed individually in a sheet metal forming operation in which the inner perimeter of the internal openings is expanded as the blank is formed.

A method and a system are disclosed for making an article of manufacture from a blank defining an internal opening. A stack of blanks are aligned and the internal openings of the blanks in the stack of blanks are machined by a rotary cutting tool to a finished dimension. The blanks are clamped together before machining in a numerically controlled machine tool. The blanks are subsequently formed individually in a sheet metal forming operation in which the inner perimeter of the internal openings is expanded as the blank is formed.

Methods for reworking structures and reworked cellular core panels, reworked structures comprising the reworked cellular core panels, and guides and cutting apparatuses for reworking cellular acoustic panels and reworking cellular non-acoustic panels are disclosed.