Abstract: The present invention relates to a steel sheet for a hot press formed member having excellent coating adhesion, and a method for manufacturing the same. A steel sheet for hot press forming according to one aspect of the present invention is an aluminum alloy plated steel sheet, wherein an average Fe content in a plating layer may be 40 wt % or more, and a concentration gradient of a section having a Fe content of 45 wt % to 80 wt % in the plating layer may 7 wt %/?m or less of a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis.

Abstract: A method for processing a steel plate capable of removing residual strain at a trim edge thereof without causing overheating in areas of the steel plate other than the trim edge. A method of processing a steel plate includes punching a steel plate and disposing heating electrodes in such a way that a trim edge punched in the punching is positioned between electrode surfaces facing each other and then heating a part of the steel plate including the trim edge.

Abstract: A lower melting point metal substrate such as zinc is covered with a higher melting point metal layer such as nickel. In order to render the nickel layer suitable for coining without cracking, it is quickly annealed with a burst of induction heat. The induction heat is limited so that only the metal layer is heated without allowing substantial heat transfer to the metal substrate. This protects the metal substrate from any substantial melting, deformation or warping and maintains the metal substrate substantially intact and without a change in properties and shape.

Abstract: An apparatus for trimming a sheet metal workpiece includes a base to support the sheet metal workpiece at a working position on the base. A shearing tool is connected to the base to trim the sheet metal workpiece by mechanically inducing a shearing stress on the sheet metal workpiece to form an edge at an edge location on the sheet metal workpiece. A heater is connected to the base to define a heated region on the sheet metal workpiece by heating at least the edge location on the sheet metal workpiece after the sheet metal workpiece is in the working position. The apparatus includes a temperature sensor to detect a surface temperature of the heated region.

Abstract: A spinning forming method includes a first forming step and a second forming step, in each of which a plate fixed to a main shaft is formed while being rotated. In the first forming step, a processing tool is brought into contact with a first main surface of the plate to form a first level-changing portion extending from the first main surface toward a second main surface. In the second forming step, the processing tool is brought into contact with the second main surface at an outer peripheral side of the first level-changing portion to form a second level-changing portion extending in an opposite direction to the first level-changing portion.

Abstract: A tool to maintain an electrical connector plug in an electrical connector outlet has a variable cross-sectional thickness. The tool is inserted into a gap between the plug and outlet to create lateral displacement of the plug to a force between the plug and the outlet to retain the plug within the outlet via increased friction, and also enhance electrical connectivity of the internal electrical pins. The tool may also include surface texturing to further increase friction, and to hold the tool firmly in place. The tool may also include a rubberized coating to further increase friction and to dampen vibrations that would otherwise serve to dislodge the plug.

Abstract: A component forming tool for forming a component from a blank includes a die forming shell for forming the component from the blank. A first shell portion of the die forming shell is disposed at a first set of support elements and a second shell portion is disposed at a second set of support elements. The tool includes at least one induction heating coil for induction heating of a workpiece disposed within a cavity formed by the first and second shell portions. The first set of support elements may be configured to detachably engage with respective base support elements of the component forming tool, with the first set of support elements keyed to engage the base support elements to limit lateral movement of the first shell portion at the base support elements. The first set of support elements may include at least two layers of different materials.

Abstract: A laminated steel sheet for a two-piece can body with a high strain level satisfying the following formulae, the polyester resin layer composing the laminated steel sheet having a center line surface roughness (Ra) of 0.2 ?m to 1.8 ?m: r1?r,0.1?r1/R?0.25, and 1.5?h/(R?r)?4 wherein h is the height of the two-piece can body, r is the maximum radius, r1 is the minimum radius, and R is the radius of the circular laminated steel sheet before forming having the same weight as the can body.

Abstract: A spinning forming apparatus shapes a plate while rotating the plate around a rotational axis. The spinning forming apparatus includes: a holding member to which the plate is attached and which rotates the plate around the rotational axis; a processing tool configured to contact a first main surface of the plate to process and shape the plate; and a heater configured to heat the plate. The heater is arranged at the opposite side of the processing tool across the plate. The heater locally heats a position of a second main surface of the plate opposite to the first main surface, the position being located on a circumference around the rotational axis, the circumference being defined by a position, with which the processing tool contacts, of the plate.

Abstract: A spinning forming device includes: a receiving jig supporting a central portion of a plate to be formed; and a rotating shaft to which the receiving jig is attached. The spinning forming device also includes: a heater configured to locally heat a transform target portion of the plate by induction heating; and a processing tool configured to press the transform target portion to transform the plate. The spinning forming device further includes a pair of holding rollers configured to sandwich an outside portion of the plate, the outside portion being located outside the transform target portion.

Abstract: A hot press-forming method includes a forming step that clamps a steel sheet heated to a temperature not less than an austenite transformation temperature and press-forms the steel sheet into a desired shape by causing a forming concave of a die and a convex of a punch to be close to each other. A formed portion has side and top portions that merge. The side portion rises up from an inner circumferential edge of a flange portion having been clamped by the die and the blank holder. A cooling step cools a region of the steel sheet after the heating step has been completed and before the forming step is completed. The particular region is along an inter-edge area formed between an opening circumferential edge of the forming concave and a top circumferential edge of the forming convex before the forming step is completed.

Abstract: A method of a forming a hollow, drug-eluting nitinol stent includes shaping a composite wire into a stent pattern, wherein the composite wire includes an inner member, a nitinol intermediate member, and an outer member. After the composite wire is shaped into the stent pattern, the composite wire is heat treated to set the nitinol intermediate member in the stent pattern. After heat treatment, the composite wire is processed to remove the outer member and the inner member without adversely affecting the intermediate member. Openings may be provided through the intermediate member and the lumen of the intermediate member may be filled with a substance to be eluted through the openings.

Abstract: A fiber reinforced composite structure includes multiple plies of pre-impregnated fiber reinforced material. Consecutive plies are layered such that the fibers of one ply are at 90 degrees relative to the fibers of a proximate ply, and such that the fibers of each ply are oriented at positive or negative 45 degrees with respect to a reference plane of the fiber reinforced composite structure. In a method for fabricating a fiber reinforced composite structure, pre-impregnated fiber reinforced composite plies are layered into a tool layup. Each ply is cut on the bias at either plus 45 degrees or minus 45 degrees. The bias angles of the layered plies alternate one relative to the next. The layered plies are cured after layering.

Abstract: A method for guiding and distributing high-energy radiation, in particular laser radiation, in the tool base body of a bending die, in particular a V-shaped die, includes a bending recess in the tool base body and a beam exit opening arranged therein for locally heating a workpiece bearing against a contact surface of the bending die by introducing high-energy radiation from a radiation source arranged outside the tool base body into the tool base body through a beam entry opening and high-energy radiation is discharged to the bending recess through the beam exit opening. At least one concentrated high-energy radiation beam is introduced into the tool base body through at least one beam entry opening and is at least partially deflected by at least one beam affecting arrangement in the tool base body, expanded and guided through the radiation exit opening onto the workpiece.

Abstract: A method of forming an article from a metal alloy sheet material includes stamping the metal alloy sheet material to thereby form a preform having at least one protrusion. The at least one protrusion includes a base portion, a first region having a first thickness and spaced apart from the base portion to thereby have a first maximum height, and a second region interconnecting the base portion and the first region and having a second thickness that is greater than the first thickness. After stamping, the method includes selectively annealing the second region without substantially annealing the first region, and, after selectively annealing, concurrently increasing the first maximum height and substantially equalizing the first thickness and the second thickness to thereby form the article.

Abstract: Shown is a method for manufacturing horizontal directional drilling pipe having internally and externally upset pipe ends. The forging is done by heating the green tube ends and applying pressure using a closed die hydraulic forging press to form the upsets. One end of a steel tube is worked by upsetting and pressing to form an external upset portion having an outer taper being shaped by upset forging. That portion is then pressed by an internal upset die so as to displace the outer taper to an internal upset portion having an inner taper. Internal upset forging is then carried out by an internal upset die to produce the finished part. The process allows the manufacturer to produce a thicker upset horizontal directional drilling pipe, where the ratio of the outside diameter to the inside diameter of the upset can be on the order of 3.5, or even greater.

Abstract: The present disclosure is directed to the use of cellulosic materials, such as wood, paper, etc., or synthetic polymeric materials, such as a thermoplastic, rubber, etc., or a composite containing one or more of these materials as feedstock barrels for the process of injection molding of metallic glasses by rapid capacitor discharge forming (RCDF) techniques.

Abstract: An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, sheet forming, and blow molding in a time frame of less than 1 second.

Abstract: There is provided a method for manufacturing a hot-press formed steel-member, the method being capable of reducing LME without causing cracking of a galvanized steel sheet. The method includes a step of using a galvanized steel sheet, a base steel thereof, having a prescribed chemical composition, a heating step of heating the galvanized steel sheet to not lower than an Ac3 transformation-point, and a hot-press forming step of executing hot-press forming at least twice after the heating step. Furthermore, every hot-press forming in the hot-press forming step is executed in such a way as to satisfy the following expression (1) (R/t)>?(a·(T?b))??(1) where “R” is a curvature radius (mm) of a shoulder of a tool used in the hot-press forming, “t” is a thickness (mm) of the galvanized steel sheet, “T” is a forming-start temperature (° C.) of the hot-press forming, “a” is a constant 0.2984, and “b” is a constant 590.

Abstract: End-group components for superconducting accelerator cavity used in acceleration of charged particles are manufactured by subjecting pure niobium sheet materials to press forming composed mainly of flat-bottomed cylindrical drawing, preferably by simultaneously conducting control of slide velocity and/or its motion and control of tool die temperature and/or its distribution/gradient in the above press forming, further preferably by dynamically controlling blank holding force in accordance with the variation of flange area, flange thickness and deformed characteristics of niobium sheet materials during the press forming, more preferably by preparing an anisotropically shaped blank instead of a circular blank by use of servo press forming machine, servo-die cushion temperature control equipment, water-soluble solid coating type lubricant, and a tooling die.

Abstract: New Al—Li alloy bodies and methods of producing the same are disclosed. The new Al—Li alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new Al—Li alloy bodies may realize improved strength and other properties.

Abstract: A cage having a plurality of cutouts for receiving rolling bodies of a joint includes a quenched and tempered steel, and the entire cage has a substantially uniform ductility over its cross section without surface hardening. The cage may be produced by forming a closed base body, cutting out a plurality of cutouts, fully hardening the cage by heating and subsequently quenching the cage, and tempering the cage.

Abstract: Systems and methods in accordance with embodiments of the invention advantageously shape sheet materials that include metallic glass-based materials. In one embodiment, a method of shaping a sheet of material including a metallic glass-based material includes: heating a metallic glass-based material within a first region within a sheet of material to a temperature greater than the glass transition temperature of the metallic glass-based material; where the sheet of material has a thickness of between 0.

Abstract: There is provided a forging die holder including a resistance heater capable of efficiently heating a die via the die holder when warm forging or hot forging is performed. A die holder is for holding a die used in a forging press for performing warm forging or hot forging. The die holder has heater mounting holes into which resistance heaters are inserted, sensor mounting holes into which temperature sensors are inserted, and guide portions disposed on both end portions of holder surfaces of holders for supporting back surfaces of the foregoing die to support side surfaces of the foregoing die located therebetween on both sides thereof. The heater mounting holes are formed at positions opposing the holder surfaces in aligned relation with the side surfaces of the foregoing die.

Abstract: A conveyor apparatus conveys work that was conduction heated at an energizing position to a processing position that is separated from the energizing position in the horizontal direction in order to perform hot press-forming, and comprises: a holding member that freely clamps both end sections in the lengthwise direction of the work that has been conduction heated; a drive mechanism that moves the holding member from at least the energizing position to the processing position; and a guide member that extends between the energizing position and the processing position and guides and supports the middle section in the lengthwise direction of the work that has been conduction heated and is being conveyed toward the processing position. A hot press-forming apparatus comprises the conveyor apparatus when conveying conduction heated work to a downstream process.

Abstract: A three-dimensionally bending machine comprises a supporting unit to support a workpiece and a feeding unit to feed the workpiece from an upstream side of the workpiece. A heating and cooling unit, provided around the outer circumference of a portion of the workpiece downstream of said supporting unit heats the portion of workpiece in a temperature range for plastic deformation and quenches and rapidly cools the deformed workpiece. A three-dimensionally movable unit, provided downstream of said heating and cooling unit, supports the metal material and controls the supporting position and/or the moving speed of the metal material to apply the bending moment in association with a feed amount, a heating amount, and a cooling amount of the workpiece. Even when a high-strength workpiece is bent, a workpiece having excellent shape fixability and uniform hardness distribution can be made, especially for application to sophisticated automobile parts.

Abstract: Embodiments herein relate to forming nano- and/or micro-replication directly embossed in a bulk solidifying amorphous alloy comprising a metal alloy by superplastic forming of the bulk solidifying amorphous alloy at a temperature greater than a glass transition temperature (Tg) of the metal alloy.

Abstract: The device and method of the invention generally relate to a system and method for percutaneous delivery, implantation and securement of an anchor at a target site. The system comprises an anchor having a bridge, a first stabilizer having a crimped state and a deployed state, a second stabilizer having a crimped state and a deployed state, and a positioning arm. The system may further comprise a cannula, pushrod, and sheath. The system permits the deposit of an anchor at a target location in the body by utilizing a controlled amount of force. The anchors and methods are particularly well-suited to implantation within the body of a living animal or human to monitor various physiological conditions.

Abstract: Split pass forging a workpiece to initiate microstructure refinement comprises press forging a metallic material workpiece in a first forging direction one or more times up to a reduction ductility limit of the metallic material to impart a total strain in the first forging direction sufficient to initiate microstructure refinement; rotating the workpiece; open die press forging the workpiece in a second forging direction one or more times up to the reduction ductility limit to impart a total strain in the second forging direction to initiate microstructure refinement; and repeating rotating and open die press forging in a third and, optionally, one or more additional directions until a total amount of strain to initiate microstructure refinement is imparted in an entire volume of the workpiece.

Abstract: A system and method of processing an alloy ingot or other alloy workpiece to reduce thermal cracking and reduce friction between the workpiece and the forging die may generally comprise positioning a multi-layer pad between the workpiece and the forging die. An article for processing an alloy ingot or other alloy workpiece to reduce thermal cracking also is disclosed. The present disclosure also is directed to an alloy workpieces processed according to the methods described herein, and to articles of manufacture including or made from alloy workpieces made according to these methods.

Abstract: Method for producing a forging from a gamma titanium aluminum-based alloy. The method includes heating at least a portion of a cylindrical or rod-shaped starting or raw material to a temperature of more than 1150° C. over a cross section of the at least a portion. The at least a portion corresponds to points at which the forging to be shaped has volume concentrations. The method also includes deforming the at least a portion through an applied force to form a biscuit having different cross sectional areas over a longitudinal extension of the biscuit, and finishing the forging through a second heating to a deformation temperature and at least one subsequent step.

Abstract: The present invention relates to a method for manufacturing a flexible piping device for an exhaust gas system of a motor vehicle, said method comprising the steps: a) forming a wound metal hose from at least one profiled metal strip, so that strip edges of adjacent strip windings movably interlock; b) exposing said wound metal hose to heat; and c) assembling the flexible piping device from said wound metal hose and from other components. In order to further reduce or eliminate an ageing function of the flexible piping device to allow the user of the flexible piping device to receive functionality and properties over lifetime at similar condition, the present invention provides that step b) includes subjecting the wound metal hose to quenching.

Abstract: A method for locking a nut with an inner thread, in which the ultimate tensile strength (Rm) and yield strength (Re) of the material constituting the nut are determined according to temperature. An optimal heating temperature is determined, at which a maximum of a relative plastic interval of the material is reached, said relative plastic interval being defined by the formula (Rm?Re)/Rm, and a maximum heating time is determined, above which the nut presents the risk of deterioration of its microstructure and/or of its initial mechanical strength. The nut is heated to a temperature substantially equal to said optimal temperature and for a heating time of less than said maximum time so that the initial microstructure and mechanical strength of the material constituting the nut are preserved, and a body of the nut is deformed locally by bending.

Abstract: A method of releasing a well packer can include applying a predetermined tension in a tubular string connected to the packer, and then reducing the tension, thereby retracting inward at least one slip of the packer. A well packer can include a generally tubular mandrel, at least one slip configured for gripping a well surface, the slip being extendable outward by engagement with a support surface, and a gripping device which permits displacement of the mandrel relative to the support surface in one direction, and which prevents displacement of the mandrel relative to the support surface in an opposite direction. A method of manufacturing a gripping device can include deforming a sleeve, thereby changing a diameter of the sleeve, aligning teeth on the sleeve across at least one slot in the sleeve, and heat treating the sleeve while the sleeve remains deformed and the teeth remain aligned.

Abstract: A system for forming a plurality of hot stamped steel parts for automotive applications includes a furnace with a stack of sealed chambers, each containing an individual heater, for simultaneously heating a plurality of blanks. Each chamber is removable from the furnace, so that if the heater contained therein malfunctions, the heater can be repaired while the other chambers continue to heat the blanks. Each chamber also comprises a shelf including a plurality of driven rollers for conveying the blanks through the furnace. A blank feeder also including a plurality of driven rollers extends continuously from the furnace to a hot forming apparatus. The hot forming apparatus includes a plurality of cavities for shaping one or more of the blanks into a plurality of the parts.

Abstract: An automated rapid capacitive discharge apparatus is provided for sequentially or simultaneously rapidly heating and shaping a plurality of metallic glass feedstock samples. The apparatus includes a sample feeder defining a body for holding a plurality of samples and being capable of sequentially positioning at least one feedstock sample into a discharge position within the processing compartment. In the processing compartment the sample is heated by a discharge of a quantum of electrical energy supplied via electrodes, then shaped into a desired shape by means of a shaping tool, and subsequently moved out of the discharge position as a second feedstock moves into a discharge position.

Abstract: A thermo-mechanical treatment process is disclosed. A nickel-base alloy workpiece is heated in a first heating step to a temperature greater than the M23C6 carbide solvus temperature of the nickel-base alloy. The nickel-base alloy workpiece is worked in a first working step to a reduction in area of 20% to 70%. The nickel-base alloy workpiece is at a temperature greater than the M23C6 carbide solvus temperature when the first working step begins. The nickel-base alloy workpiece is heated in a second working step to a temperature greater than 1700° F. (926° C.) and less than the M23C6 carbide solvus temperature of the nickel-base alloy. The nickel-base alloy workpiece is not permitted to cool to ambient temperature between completion of the first working step and the beginning of the second heating step. The nickel-base alloy workpiece is worked to a second reduction in area of 20% to 70%. The nickel-base alloy workpiece is at a temperature greater than 1700° F. (926° C.

Abstract: An austenitic iron-based alloy containing manganese and at most 10% by weight and in particular at most 5% by weight nickel, based in each case on the overall weight of the iron-based alloy.

Abstract: A method for consolidating a preform made of composite material. The preform and a compliant metal alloy sheet are placed between less compliant matched confronting forming/molding surfaces with the preform being sandwiched between the metal alloy sheet and a matched confronting surface. The matched confronting surfaces and compliant metal alloy sheet are heated until the preform reaches at least its consolidation temperature. During heating, force is applied so that the matched confronting surfaces exert sufficient compressive force on the preform and metal alloy sheet to cause the composite material to consolidate at the consolidation temperature. The metal alloy sheet has a tensile yield point in a range of 25-300 psi at the consolidation temperature at a strain rate of about 1% to 10% strain per minute.

Abstract: A hemming station is configured for hemming a panel assembly including an outer panel having a hem flange defined by a hem edge. The hemming station includes a roller configured to fold the hem flange, a heating device configured to heat the hem edge, and a control unit. The control unit is configured to control the roller and the heating device such that the roller folds the hem flange when the temperature of the hem edge is in a predetermined temperature range.

Abstract: Methods of refining the grain size of titanium and titanium alloys include thermally managed high strain rate multi-axis forging. A high strain rate adiabatically heats an internal region of the workpiece during forging, and a thermal management system is used to heat an external surface region to the workpiece forging temperature, while the internal region is allowed to cool to the workpiece forging temperature. A further method includes multiple upset and draw forging titanium or a titanium alloy using a strain rate less than is used in conventional open die forging of titanium and titanium alloys. Incremental workpiece rotation and draw forging causes severe plastic deformation and grain refinement in the titanium or titanium alloy forging.

Abstract: Disclosed herein is a system for manufacturing a membrane electrode assembly of a fuel cell stack, in which the concept of automation is introduced to the entire process for manufacturing the membrane electrode assembly and, in particular, bonding and stamping processes for the membrane electrode assembly and a gas diffusion layer are integrated. According to the present invention, it may be possible to reduce the installation area of the system and reduce the production cycle type, thus facilitating mass production.

Abstract: A flat steel product which is provided for forming into a component by hot pressing and which has a base layer of steel on which is applied a Zn or a Zn alloy metallic protective coating for protecting against corrosion. On at least one of the free surfaces of the flat steel product, a separate cover layer is applied which contains an oxide, nitride, sulphide, carbide, hydrate or phosphate compound of a base metal. In addition, a method which allows the production of such a flat steel product, and a method which allows the production of a component from such a flat steel product.

Abstract: A system and method for shaping a net or near-net titanium part, the method comprising machining a piece of titanium into a titanium part having non-uniform thickness, heating the titanium part to a target temperature within a target temperature range between an auto-relief temperature of the titanium part and a minimum temperature required for super plastic forming of the titanium part, and lowering a die into the titanium part with sufficient force to shape the titanium part. The system for shaping the titanium part may comprise a multiple-axis machine, a die, electrical clamps, sensors, and a control system for adjusting heating temperatures based on information received from the sensors regarding the titanium part.

Abstract: A machine and method for bending tubes of large diameter in different bending directions, wherein a tube (10) is guided in the axial direction through an annular inductive heating device (7); the tube (10) is secured by a bending lock (4) at the end (11) thereof intended to be bent; at least one bending arm (2), which is mounted rotatably about a vertical axis of rotation (8), is located at the part of the bending machine that is disposed in the advancing direction of the tube (10); the bending lock (4) is indirectly connected to the bending arm (2); the bending lock (4) has a force transmission device between the receiving device for tubes and the bending arm (2); and the force transmission device is connected to the bending arm (2).

Abstract: An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time frame of less than 1 second.

Abstract: An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, sheet forming, and blow molding in a time frame of less than 1 second.

Abstract: An apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming magnetic metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, sheet forming, and blow molding in a time frame of less than 1 second.

Abstract: A forging apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined “process temperature” between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via forging in a time frame of less than 1 second.

Abstract: The invention provides methods for manufacturing warm press-formed members which can ensure post-coating corrosion resistance. A method for manufacturing warm press-formed members includes heating a steel sheet to a temperature in the range from 200 to 800° C. and warm press-forming the steel sheet at a temperature in the above range of temperatures, the steel sheet having a Zn—Ni alloy coating layer on its surface, the coating layer including 10 to 25 mass % Ni and the balance being Zn and inevitable impurities and having a coating weight of 10 to 90 g/m2.