Abstract: A honeycomb core is created from a stack of metal sheets that are welded together using a serpentine weld path. Each sheet in the stack is welded to the sheet underneath. All the odd-numbered sheets, excluding the bottom sheet, are welded using a first serpentine welding pattern that includes a plurality of long welds and a plurality of short welds. All the even-numbered sheets are welded using a second serpentine welding pattern that includes a plurality of long welds and a plurality of short welds, such that the long welds of the second serpentine welding pattern are shifted from the long welds of the first serpentine welding pattern. When a sufficient number of sheets have been welded, the stack is trimmed to remove the short welds. The stack is expanded by pulling the sheets one from another to form the honeycomb core.

Abstract: A continuous casting plant in particular for long steel products is provided with a mould (1), from which a cast strand (2) is continuously cast. The cast strand (2) is guided along a, in particular curved, guideway formed by guide rollers (11, 12, 13, 14) arranged one after the other, and at the same time in a cooling chamber having spray members. The guide rollers (12, 13, 14) and/or the spray members are contained in a plurality of centring modules (10) or spray modules (3) arranged one after the other and are adjustable in a controlled manner substantially concentrically with respect to the desired axis of the cast strand. As a result, on the one hand, the risk of thermally overloading the rollers and damaging the strand surface is considerably reduced and symmetrical cooling is ensured.

Abstract: A ball array mask includes: a metal mask, which includes through holes into which minute balls are inserted, and which is positioned at a location above an object to be mounted; a hollow frame; a stretchable sheet, edges of the metal mask being affixed to the hollow frame by the stretchable sheet; and projection members that are attached to respective corners of the metal mask so as to pull the metal mask outwardly.

Abstract: A device for assembling components having metal bonding pads includes plates that can move relative to each other, bearing metal components respectively and leaving between them a flat chamber surrounding the components when the latter are in contact with each other. The flat chambers can be saturated with deoxidizing gaseous fluid.

Abstract: A probe for friction stir welding MMCs, ferrous alloys, non-ferrous alloys, and superalloys, as well as non-ferrous alloys, the probe including a shank, a shoulder, and a pin disposed through the shoulder and into the shank, wherein the pin and the shoulder at least include a coating comprised of a superabrasive material, the pin and shoulder being designed to reduce stress risers, disposing a collar around a portion of the shoulder and the shank to thereby prevent movement of the shoulder relative to the shank, and incorporating thermal management by providing a thermal flow barrier between the shoulder and the shank, and between the collar and the tool.

Abstract: A method of friction welding a head part to a skirt part of a piston having a hollow cooling duct in which the internal connection surface of the first part to be welded is reciprocally arranged with an internal connection surface of the second part to be friction welded, so that they form a unsymmetrical contact area, so that the resulting weld of the first and the second parts produces a weld bead that is located predominantly outside of the hollow cooling duct. The unsymmetrical contact area can be formed by chamfered, angled edge surfaces that produce, for example, a wedge-shaped space, or partially matched, inter-fitting surfaces that remain out of contact and produce a gap at sides facing the hollow space.

Abstract: A microsystem has a first cavity which is sealed off from the surroundings and a second cavity which is sealed off from the surroundings. The first cavity is bounded by a first bond joint and the second cavity is bounded by a second bond joint. Either the first bond joint or the second bond joint is a eutectic bond joint or a diffusion-soldered joint.

Abstract: A method of welding includes a first primary welding step of carrying out a friction stir welding on the abutting portion of metal members from a first surface of a metal member. In a second primary welding step, the abutting portion is friction stir welded from the reverse face side of the member, while penetrating a stirring pin of rotation tool in a plasticized region formed in the first primary welding step.

Abstract: A method for forming a tube-based detector for signaling when a PVD target is reduced to a predetermined quantity of the PVD target material includes providing a mold member having an inner molding member and an outer molding member defining a space therebetween, melting a desired tube material, injecting the molten tube material into the space between the inner molding member and the outer molding member, cooling the molten tube material, removing the tube from the mold member after the molten tube material has cooled and solidified into a tube, embedding the tube in the physical vapor deposition target, wherein the tube forms an enclosure of the tube-based detector.

Abstract: A glass material for producing insulation layers is provided. The glass material can improve the radio-frequency properties of radio-frequency substrates or radio-frequency conductor arrangements. In one embodiment, the glass material for producing insulation layers for radio-frequency substrates or radio-frequency conductor arrangements is an applied layer with a layer thickness in the range between 0.05 ?m and 5?mm and has a loss factor tan ? of less than or equal to 70*10?4 in at least a frequency range above 1 GHz.

Abstract: A fastening device and method for mounting equipment to a framing member. The invention includes a single breakaway fastener that is pretentioned using a biasing member to fracture on a predetermined force applied to the fastened joint to avoid damage to the secured equipment. In one example the device and method includes the fastener having a reduced diameter portion that is positioned between an annular plate and the framing member.

Abstract: Embodiments of the present invention include a welding wire feeder enclosure, the enclosure including a front, a rear, a top, and a bottom forming a perimeter of the enclosure. The enclosure further includes opposing side openings separated by a width of the enclosure, each of the side openings being adapted for receiving a side panel. Particular embodiments further include a divider panel extending substantially between the front, rear, top, and bottom, and positioned along an intermediate portion of the width of the enclosure to divide an internal volume of the enclosure into a service side and a user side, the divider panel being formed monolithically with the front, rear, top, and bottom of the enclosure, the divider panel further including an integral spindle shaft location.

Abstract: Two thin-walled jackets a joined by preparing end faces of the jackets by plastically deforming and upsetting microprojections thereon and thereby forming the metal of the upset microprojections into annular beads on inner surfaces of the respective jackets. Then the end faces are abutted while centering the jackets on each other relative to their external diameters. The end faces are then spot welded together in a plane where the end faces abut and then joined with a continuous main weld having a width equal to between four and six times the thickness of the wall of the jackets. Heat is then extracted from the welded jackets starting at a distance not exceeding times the wall thickness from a joint center line where the end faces abut.

Abstract: Exemplary embodiments of the invention provide a method of measuring the separation of moving confronting casting surfaces within a casting cavity of a casting apparatus. The method involves attaching at least one separation sensing device to a first one of a pair of confronting casting surfaces outside the casting cavity and then moving the casting surfaces to advance the sensing device(s) through the casting cavity while operating the device(s) to generate signals. The signals are monitored continuously or at regular intervals and converted to distance measurements representing separation of the surfaces at a plurality of positions through the casting cavity. Other exemplary embodiments provide apparatus for carrying out the method, and methods of measuring irregularities of casting belts or the like.

Abstract: A counter-rotating spindle includes a shoulder tool, a pin tool inserted in the shoulder tool, a first motor that is connected with the pin tool and rotates the pin tool, and a second motor that is connected with the shoulder tool and rotates the shoulder tool. The direction and the speed of the rotation for the pin tool may be selected independently from the speed and direction of rotation of the shoulder tool enabling optimization of the friction stir welding process. Counter-rotating the pin tool and the shoulder tool may improve the mixing abilities and efficiency of the pin tool and may prevent the galling effect between the pin tool and the shoulder tool. The counter-rotating spindle may be used, for example, for continuous path friction stir welding and spot welding of aluminum and its alloys, including cast alloys, as well as joining similar and dissimilar alloys.

Abstract: A method of controlling composition of a molten copper or a molten copper alloy during continuous cast, comprising the steps of determining continuously specific resistance of the molten copper or the molten copper alloy; calculating the composition of the molten copper or the molten copper alloy based on relationships between specific resistance of the molten copper or the molten copper alloy and each constituent which are preliminarily comprehended; and controlling the composition of the molten copper or the molten copper alloy based on the calculated composition. It is possible to consider temperature or content of dissolved oxygen to calculate the composition.

Abstract: A seal assembly for a gas turbine engine includes a first seal member having a first surface, a second seal member having a second surface, with the second surface configured to generally abut at least a part of the first surface. At least a portion of at least one of the first surface and the second surface includes a coating that includes about 30 to about 80 weight percent of a hard carbide material, and about 20 to about 70 weight percent of lubricating material incorporated with the hard carbide material. The coating defines overlapping lenticular particles.

Abstract: A process for producing a copper alloy material from a copper alloy of a precipitation reinforced type, which contains a process to perform individually a dissolution of a pure copper and a dissolution of an additional element or a mother alloy containing the same, comprises the steps of: melting an element and/or a mother alloy at a same time, that is selected from a Ni, a Co, an Si, a Ni—Cu mother alloy, a Co—Cu mother alloy, an Si—Cu mother alloy, a Ni—Si—Cu mother alloy, and a Co—Si—Cu mother alloy with combining therebetween, and melting thereof with an assistance of a generation of a heat of mixing, in a case of forming a high density melt containing at least either one of the Ni or the Co, and the Si, as high density thereof; forming the high density melt as a content of the Ni to be 80 mass % at maximum; and forming an alloy molten metal having a predetermined component and concentration, by adding the melt into a pure copper molten metal to be supplied from another melting furnace.

Abstract: A solder joint comprising a solder capture pad on a substrate having a circuit; and a lead containing or a lead free solder selected from the group comprising Sn—Ag—Cu solder, Sn—Cu solder and Sn—Ag solder adhered to the solder capture pad; the solder selected from the group comprising between 0.1 and 6.0 per cent by weight Zn. A solder joint, comprising a solder capture pad on a substrate having a circuit; and a Sn—Cu lead free solder adhered to the solder capture pad, the solder comprising between 0.1 and 6.0% by weight Zn. Formation of voids at an interface between the solder and the solder capture pad is suppressed. A method for forming solder joints using the solders.

Abstract: A multiple substrate system, a method, and structure for adapting solder volume to a warped module. An illustrative embodiment comprises a method for joining a first substrate to a second substrate. A deviation from a nominal gap between the first substrate and the second substrate at a first region of the first substrate is ascertained. A volume of solder paste necessary to compensate for the deviation from a nominal gap is determined. The volume of solder paste necessary to compensate for the deviation at the first region of the first substrate is applied. Further, the second substrate is bonded to the first substrate using, at least in part, the solder paste applied at the first region of the first substrate.