Abstract: The present invention is directed to provide a method for manufacturing a die for press forming of glass in which cracks are not easily caused in a surface covering layer. A surface covering layer made of an amorphous Ni—P alloy is formed on the surface of a base material made of a steel having a martensitic structure or made of steel in which ?-carbide is dispersed in low carbon martensite matrix. Then, the base material and the surface covering layer are heated to change the base material into a troostitic structure or a sorbitic structure and change the surface covering layer into a eutectic structure of Ni and Ni3P. Preferably, the base material contains 0.3 wt % or more and 2.7 wt % or less of carbon and 13 wt % or less of chromium, and the heat treatment is carried out at 270° C. or more.

Abstract: A process for manufacturing a single-crystal turbomachine nozzle guide vane including an airfoil between two platforms is disclosed. The process includes pouring molten metal into a shell mold followed by directional solidification from a single crystal provided by a single-crystal grain provider device placed in the mold and having a predetermined orientation coinciding with the vertical. The volumes of the mold forming the platforms are oriented in a plane parallel to the vertical direction of the single crystal. The single-crystal grain providing device emerges in a grain duct forming a connection between the device and the lower ends of the platforms. The grain duct is shaped to present two branches for feeding the platforms and a web-shaped volume extending between the feed branches, the platforms and a lower edge of the airfoil. The upper edge of the volume forming the airfoil is inclined to the horizontal direction.

Abstract: A method for centrifugal casting using a sand core having a refractory coating applied in a dry state, without the use of a liquid carrier, said coating sufficient to withstand the adverse forces of the centrifugal casting environment and yield a finished cast surface with a consistent, smooth surface. The coating may be applied by pressing the coating into a mixture of refractory material and impacting media fluidized in a vibratory bed such that the core floats in the mixture, and then rotating the core to coat the surfaces that will be in contact with the molten metal in the casting process.

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: The present invention provides a high-strength steel sheet which has a 980 MPa class tensile strength as well as has excellent elongation, stretch flangeability and weldability, and also has excellent anti-delayed fraction property. The high-strength steel sheet comprises steel satisfying: C: 0.12 to 0.25%, Si: 1.0 to 3.0%, Mn: 1.5 to 3.0%, P: 0.15% or less, S: 0.02% or less, Al: 0.4% or less, and comprising the remnant made from iron and unavoidable impurities, wherein a ratio of the contents of Si and C (Si/C) is within the range from 7 to 14 in terms of a mass ratio, and a microstructure in a longitudinal section comprises, by an occupancy ratio based on the entire structure, 1) bainitic ferrite: 50% or more, 2) lath-type residual austenite: 3% or more, and 3) block-type residual austenite: 1% or more to ½×occupancy ratio of lath-type residual austenite, and 4) average size of block-type second phase is 10 ?m or less.

Abstract: Mechanical hooks made of bulk-solidifying amorphous alloys, wherein the bulk-solidifying amorphous alloys provide ruggedness, durability, higher service loads, excellent resistance to chemical and environmental effects, and low-cost manufacturing are provided. In addition, methods of making such mechanical hooks from bulk-solidifying amorphous alloys are also disclosed.

Abstract: The invention relates to a method for soldering components, in particular heat exchanger, in particular made of aluminum materials, aluminum alloys or wrought alloys, in a soldering furnace, in particular a continuous soldering furnace or a batch-type soldering furnace, which comprises a muffle, which is flushed with protective gas in order to create a protective atmosphere. In order to make the production of soldered components easier, during the soldering of the components the muffle is supplied with such a greatly increased amount of gas, in particular protective gas or reaction gas, that a low-oxygen protective atmosphere is created.

Abstract: A continuous annealing and pickling process of flat cold-rolled products, such as stainless steel strips, to obtain a high surface quality product at high production rates and with a low environmental impact. It comprises the following steps: heating, up to a temperature comprised in the range 650-1050° C., in an atmosphere with an oxygen content comprised in the range from 0.5 to 12%; heating for a time comprised from 10 to 200 sec up to a temperature comprised in the range from 650 to 1200° C. in presence of oxidizing agents and/or inert agents; cooling down to temperatures comprised in the range from 650° C. to ambient temperature in presence of oxidizing agents and/or inert agents; thermochemical or electrolytic descaling and finally possible pickling and/or passivation, by means of the use of pickling baths consisting of mineral acid solutions.

Abstract: An apparatus and computer program are disclosed for processing at least one workpiece using a rotary tool with rotating member for contacting and processing the workpiece. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. The methods further include obtaining force signals or parameters related to the force experienced by the rotary tool at least while the rotating member is disposed at the extremes of the oscillation. The force signals or parameters associated with the extremes can then be analyzed to determine a lateral position of the selected path with respect to a target path and a lateral offset value can be determined based on the lateral position. The lateral distance between the selected path and the target path can be decreased based on the lateral offset value.

Abstract: In one embodiment, a first substrate having first solder bumps and a second substrate having second solder bumps are stacked while temporarily tacking the solder bumps to each other, and then a stack is disposed inside a furnace. The gas in the furnace is exhausted to be in a reduced pressure atmosphere, and then a carboxylic acid gas is introduced into the furnace. While increasing a temperature inside the furnace where the carboxylic acid gas is introduced, the gas in the furnace is exhausted to be in a reduced pressure atmosphere at a temperature in a range from a reduction temperature of oxide films by the carboxylic acid gas to lower than a melting temperature of the solder bumps. By increasing the temperature inside the furnace up to a temperature in a range of the melting temperature of the solder bumps and higher, the first solder bumps and the second solder bumps are melted and joined.

Abstract: A magnetic plug weld tool includes an arm, a copper alloy plate that is rotatably connected to one end of the arm, and a magnetic base that is connected to the arm. The arm is configured to apply a force to the copper alloy plate using the magnetic base.

Abstract: An apparatus and method for casting an alloy using a unidirectional casting technique. The apparatus includes a mold adapted to contain a molten quantity of an alloy, a primary heating zone adapted to heat the mold and the molten alloy therein to a temperature above the liquidus temperature of the alloy, a cooling zone adapted to cool the mold and molten alloy therein to a temperature below the solidus temperature of the alloy and thereby yield the unidirectionally-solidified casting, and an insulation zone between the primary heating zone and the cooling zone. The apparatus also has a secondary heating zone separated from the insulation zone by the primary heating zone. The secondary heating zone maintains the mold and the molten alloy therein at a temperature below the liquidus temperature of the alloy. The temperatures within the primary and secondary heating zones are individually set and controlled.

Abstract: A decoring method and system is provided. The method includes the steps of providing the casting having a core material disposed in the internal passage; providing the decoring apparatus configured to selectively oscillate the casting and selectively rotate the casting; securing the casting in the decoring apparatus; introducing a quantity of shot into the internal passage of the casting; oscillating the casting; and rotating the casting. A decoring apparatus configured to selectively oscillate the casting along a first axis, rotate the casting about a second axis, and rotate the casting about a third axis, is also provided.

Abstract: A system and method for friction stir processing of a hand-held cutting edge, wherein friction stir processing techniques are used to modify the properties of the hand-held cutting edge to obtain superior edge retention and superior resistance to chipping of the hand-held cutting edge.

Abstract: A wire for welding Ni-based heat resistant alloy, comprising: a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.0001 to 0.020%, C: 0.03 to 0.15%, and a balance of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.004% or less, and P: 0.010% or less, wherein the wire has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in the matrix.

Abstract: A method for weldbonding at least two work-pieces together includes applying an adhesive to a first surface of a first work-piece, and bringing the first surface of the first work-piece into contact with a surface of a second work-piece. The first work-piece and second work-piece are then friction stir or friction stir spot welded together, and the adhesive is cured. The use of bonding tools to maintain the two work-pieces together during curing of the adhesive is eliminated.

Abstract: The present invention provides photophysicochemical cell which comprises, as the photoanode electrode (a) an electrode formed of a porous semiconductor material which, under ultraviolet irradiation condition, is photo-excited and functions as a porous electrically conductive material in an ultraviolet region, or (b) the porous semiconductor material capable of functioning as an ultraviolet-region electrically conductive material is selected from the group consisting of titanium dioxide, zinc oxide, tin dioxide, tungsten oxide, and silicon carbide, and (c) the porous semiconductor material which constitutes the photoanode electrode capable of functioning as an ultraviolet-region electrically conductive material has large effective surface area of some hundreds times to thousands times the apparent surface area of the electrode.

Abstract: A mould for casting metal which allows solid impurities to be removed from the molten metal. The mould (50) has a cavity therein, said cavity having a casting portion and contiguous therewith a running system upstream of the casting portion, said running system comprising an upstream inlet portion (58), a downstream outlet portion (60) and a swirl chamber (54) disposed between the inlet and outlet portions (58,60), wherein a filter (62) is provided at an interface between the swirl chamber (54) and the outlet portion (60). The application also relates to a method for preparing the mould, a pattern for preparing the mould, a housing for use in the mould and a method for casting employing the mould.

Abstract: Molten metal is introduced into the cavity by a combined gravity feed and centrifugal force feed using a rotating turntable under electrical or electronic control. The centrifugal force is controlled to be substantially constant until the metal has solidified. This is accomplished by controlling the ramp-up acceleration of the turntable where rotational velocity is a time-dependent function of rotational radius and molten metal mass and taking into account the flow rate and cooling rate of the liquid metal. The process reduces waste and the attendant energy consumption associated with the quantity of metal required to be melted for the initial pour and associated with reprocessing and reusing the waste component.

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.