Abstract: The molding device comprises a lower mold unit and an upper mold unit. When the upper mold unit approaches the lower mold unit, a molding cavity is defined between the lower and upper mold units. The lower mold unit has a storing chamber that is communicated with the molding cavity. The lower mold unit comprises a pressure-decreasing mechanism and a pushing mechanism. A molten material is stored in the storing chamber. When the molding cavity is formed between the lower mold unit and the upper mold unit, the pressure-decreasing mechanism decreases pressure in the molding cavity. Afterwards, in sync with the operation that the upper mold unit pushing down a lower mold-holding member of the lower mold unit, an injection rod of the pushing mechanism pushes out the molten material in the storing chamber to the molding cavity. As a result, the efficiency of the molding operation is improved.

Abstract: The invention relates to a method for vacuum diecasting and a diecasting mould (1), especially for diecasting components made of metal or the alloys thereof. The aim of the invention is to provide a better casting quality while simplifying the procedure of the method. To this end, the evacuation of the die cavity (5) and the filling with molten bath are carried out independently from one another.

Abstract: In the hydrogen supply device for producing and supplying hydrogen to a fuel cell, a heat exchange section has a rotary thermal storage through which low and high temperature passages pass. Reforming material is supplied to the low temperature fluid passage on an upstream side of the heat exchange section. A reforming section for producing reformed gas containing hydrogen is located at a downstream side of the low temperature fluid passage. A combustion gas supply section for generating and supplying a combustion gas is located in the high temperature fluid passage. The rotary thermal storage rotates to move alternately between the low and high temperature fluid passages so that heat of the combustion gas flowing in the high temperature fluid conduit is transferred to reforming material flowing in the low temperature fluid conduit. The low temperature fluid passage communicates with the high temperature fluid passage via the fuel cell.

Abstract: A device for channeling boiler flue gas flow and injecting controlled amounts of ammonia upstream of a selective catalytic reduction (SCR) NOx removal system. A perforated plate and/or damper can be located within one or more channels to provide volumetric control through a channel. Flow conditioning devices such as static mixing tabs and/or flow straightening tube bundles can optionally be included in each channel to improve mixing and velocity profiles. Gas flow rate measurements made, for example via pressure taps, within one or more channels can be used to measure flow and provide feedback for improved ammonia-to-NOx mole ratio control.

Abstract: Dimples, preferably 40 to 200 ?m in average depth and 0.5 to 3 mm in diameter of circle equivalent, are formed on the peripheral surface of a cooling drum, adjacent to each other at the rims of the dimples; and fine humps (preferably, fine humps 1 to 50 ?m in height and 5 to 200 ?m in diameter of circle equivalent on the surfaces of the dimples and/or fine humps 1 to 50 ?m in height and 30 to 200 ?m in diameter of circle equivalent at the rims of the dimples), fine holes (preferably, fine holes 5 ?m or more in depth and 10 to 200 ?m in diameter of circle equivalent), or fine unevenness (preferably, fine unevenness 1 to 50 ?m in average depth and 10 to 200 ?m in diameter of circle equivalent) are formed at the rims and/or on the indented surfaces of said dimples.

Abstract: An article with an embossment thereon is fabricated by providing an article precursor, providing an embossment precursor, and flash welding the embossment precursor and the article precursor together, to form the article with the embossment thereon.

Abstract: The invention relates to a rotational flash guard and method of use of a rotational flash guard. In general, the flash guard is attached to a support frame by an arm, a linkage mechanism pivotally interconnects the arm and the support frame, and an extensible power member connects the support frame to the linkage mechanism. Due to the unique configuration of the rotational flash guard it is adapted for movement about a work piece positioner to allow for use of a robotic tool while providing protection to the operator and other workers.

Abstract: This invention relates to a method and apparatus for controlling the composition of a weld. More particularly it relates to welding using an electric circuit, thereby creating a weld puddle, and adding at least one filler that is electrically independent from the electric circuit to the weld puddle at a controllable rate to obtain a target weld composition. The filler can be added to the extent limited by practical weld puddle geometry and, thus, the method and apparatus also facilitate increased weld deposition rates.

Abstract: A welding torch member for securing an electrode to a welding torch is provided. The welding torch member may comprise first and second portions. Each of the first and second portions may have a hole therethrough to enable an electrode to extend through the first and second portions. The first portion may be adapted to secure the welding torch member to a welding torch body. The first and second portions may have a hole therethrough to enable the electrode to extend through the welding torch member. The second portion may be adapted so that it may be compressed onto the electrode to secure the electrode to the welding torch. A second welding torch member may be urged against the first welding torch member to compress the second portion onto the electrode. The first and second welding torch members may be secured to a welding torch. A power source may be used to provide power to the electrode through the welding torch member.

Abstract: A method for forming a cylindrical body utilizing a continuous weld is provided. The method includes feeding a source material including a first edge and a second edge from a coil and offsetting at least one of the first edge and the second edge. The method further includes spiraling the material to form a cylinder, welding the first edge and the second edge together forming a continuous weld, and cutting the cylinder to a selected length. To fabricate a jacket, a longitudinal cut is made in the cylindrical body, at least one cutout is cut, and the continuous weld is an outer fillet weld.

Abstract: A method for processing a gas containing at least hydrogen sulfide (H2S) and at least sulfur dioxide (SO2), includes the steps of contacting the gas with a liquid solvent containing at least one catalyst in a contacting stage, recovering gaseous effluent substantially containing no hydrogen sulfide and no sulfur dioxide from the contacting stage, and separating liquid sulfur from liquid solvent in a decantation zone downstream of the contacting stage. In order to remove by-products resulting from degradation of the catalyst, a liquid fraction F containing at least solvent, catalyst, sulfur and the solid by-products resulting from degradation of the catalyst is extracted from after the contacting stage.

Abstract: A wire bonding apparatus with a bonding head that includes an ultrasonic transducer having a capillary at its tip end, piezo-electric elements that form a pair of complementary action type extension and retraction driving elements which cause the ultrasonic transducer to move with respect to a transducer holder, an impact detection sensor, and a Z motor which drives the transducer holder. The piezo-electric elements are arranged so that when one of them is driven to extend, the other is driven to retract. When the impact detection sensor detects that the capillary is lowered by the Z motor and comes into contact with a bonding object (semiconductor chip), the driving of the Z motor is stopped, and the piezo-electric elements are driven to the directions of extension and retraction in a complementary manner, thus swinging the ultrasonic transducer and moving the capillary upward.

Abstract: A method for processing a gas containing at least hydrogen sulfide (H2S) and at least sulfur dioxide (SO2), includes the following stages: contacting the gas with a liquid solvent containing at least one catalyst in a contacting stage, recovering a gaseous effluent substantially containing no hydrogen sulfide and no sulfur dioxide, and a mixture containing liquid sulfur, liquid solvent and solid by-products resulting from the degradation of the catalyst, separating the liquid sulfur from the liquid solvent in a decantation zone, extracting a liquid fraction F containing at least the solid by-products from a layer between the liquid solvent and the liquid sulfur in the decantation zone, sending the liquid fraction F to a processing stage distinct from the contacting stage, and recovering at least a stream F1 comprising most of the solid by-products and a stream F2 mostly comprising solvent nearly free of the solid by-products from the processing stage.

Abstract: There is provided a ceramic fiber casting core used in making cast metal parts comprised of a ceramic fiber structure. The casting core may further comprise a support tube in structural supporting relation to the ceramic fiber structure. There is also provided a method to manufacture the ceramic fiber casting core that comprises mixing ceramic fibers and a binder in a mix tank. Pouring the resultant mixed slurry into a vacuum forming tank. Inserting a perforated mandrel into the vacuum forming tank. Forming a vacuum inside the mandrel resulting in vacuum depositing of the ceramic fiber on the mandrel. Removing the ceramic fiber casting core and mandrel from the vacuum forming tank. Removing the mandrel, and then drying and curing the ceramic fiber structure. When necessary, locating a support member in structural supporting relation to the ceramic fiber structure. Machining the unfinished casting core to a desired outside dimensions.

Abstract: The invention provides an apparatus and a method for preventing oxidation of an electronic device, such as a semiconductor leadframe, when it is heated. The apparatus comprises an area in which said device is to be heated and inlet means adapted to supply a relatively inert gas to the said area. In particular, the apparatus includes a porous distribution element through which the inert gas is passed from the inlet means to said area, whereby to protect the electronic device in the area from oxidation.

Abstract: Disclosed are a method and an apparatus for producing a uranium foil with fine crystalline granules by forming the foil by the gravitational dropping of molten uranium or uranium alloy and rapidly cooling the foil by the contact with cooling rolls, and a foil produced thereby. In accordance with the present invention, a high-purity and high-quality uranium foil with an isotropic structure and fine crystalline granules is easily produced via a simple process without requiring hot rolling and heat treatment processes. The surface of the foil is prevented from oxidizing and residual stress is not imparted to the foil. The productivity and the economic efficiency of the foil are improved.

Abstract: A polymer masking flux for fabricating external contacts on semiconductor components includes a polymer resin, a fluxing agent and a curing agent. The flux is configured to clean contact pads for the external contacts, and to hold the external contacts on the contact pads during a reflow bonding process. The flux is also configured to cure or polymerize, to form donut shaped polymer support members for the external contacts. In addition, the flux is configured to mask conductive traces in electrical communication with the contact pads, and to electrically insulate the external contacts from the conductive traces. The external contacts can be pre-formed solder balls, or deposited solder bumps. In the case of solder bumps, the flux can include solder particles configured to coalesce into the solder bumps.

Abstract: Improved fluxless soldering processes are disclosed. In accordance with one technique, a solder preform having a plurality of voids formed on its primary surfaces is disposed between metallized surfaces of a pair of members to be joined. Upon reaching the reflow temperature, fresh solder flows into the voids and wets portions of the metallized surfaces, thus overcoming the solder surface oxidation problem common to fluxless soldering processes. In accordance with another technique, a solder preform having primary surfaces coated with a thin layer of a noble metal is employed. The noble metal substantially prevents oxidation of the solder performs surfaces while the preform is heated to reach reflow temperature. As the solder temperature increases, portions of the noble metal are dissolved into the bulk solder material. Thus, during reflow, non-oxidized bulk solder material is enabled to wet the metallized surfaces of the pair of members.

Abstract: Apparatus for separating solid particles from a suspension of solid particles and gas, wherein the apparatus comprises: (i) a vertical primary cyclone vessel having a tubular housing comprising of a tubular wall section provided with a tangentially arranged inlet for receiving the suspension, and a cover which closes the upper end of the tubular wall section; wherein the cover is provided with an axial circular opening which opening serves as a gas inlet opening of a gas outlet conduit; (ii) one or more secondary gas-solids cyclone separators which are fluidly connected with the gas outlet conduit of the primary cyclone.

Abstract: At least one machine tool, preferably two machine tools (1, 2) is or are provided for the production of workpieces, or for the complete production of complex workparts, which machine tools each have a basic body (3, 4) and machine units (7, 8) movable in the horizontal direction thereon. Each machine unit has a work spindle (13, 14) which is supported displaceably in the axial direction of the spindle in a carrier (11, 12) of crankshaft-like design. The carrier is mounted pivotably and supports each work spindle above a respective transport system (31, 32) for a workpiece or the workparts (37, 38). Machining devices, for example in the form of a tool carrier (44) for turning, drilling and/or milling tools, a laser-welding device (46), a grinding device (47) and a brushing device (48), and also an apparatus for joining, are provided in the functional area of one of these machine tools.