Abstract: Bucket tip tenons requiring refurbishment are removed from the bucket tips by grinding. Groups of buckets are clamped on a rotatable table in positions adjacent an induction heating coil and a robotic welding arm, respectively. While one group is preheated, the other group of buckets is in a welding location, enabling the welding head on the robotic arm to sequentially apply weld buildup material to the bucket tips. After applying weld buildup material in multiple passes and sequentially to the bucket tips, the buckets are removed, stress-relieved and the weld buildup material machined to provide refurbished tenons. Upon removal of the buckets from the table, the table is rotated to locate the preheated buckets in welding locations and additional buckets are clamped to the table for preheating.

Abstract: Heating systems and methods for inductive heating or a combination of resistive and inductive heating. A heater coil is inductively coupled to an article and a current signal is supplied to the heater coil. The heater coil generates a magnetic flux, based on the applied current signal, for inductively heating the article. Current pulses of a certain profile are used to enhance the rate, intensity and/or power of inductive heating delivered by the heating element or coil and/or to enhance the lifetime or reduce the cost of the inductive heating system.

Abstract: The performance of a magnetic pulse forming or welding process is monitored by positioning a deformation member relative to an inductor coil of the apparatus, then energizing the inductor coil to exert a force thereon. The deformation member can be a plastically deformable tube, and the amount of such plastic deformation that occurs when the inductor coil is energized can be measured to determine the magnitude of the force that is generated by the inductor coil. Alternatively, the deformation member can be an elastically deformable body, and the amount of such elastic deformation that occurs when the inductor coil is energized can be measured to determine the magnitude of the force that is generated by the inductor coil.

Abstract: A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enable bonding of the joining surfaces, and thereafter the joining surfaces brought into contact with one another and twisted to attain a permanent metallurgical weld at the interface of the joining surfaces. The piston has radially spaced walls which are both welded simultaneously. The weld joints may lie in the same or different planes. Once joined, and while still hot, the parts may be pulled apart slightly to reduce the wall thicknesses at the weld joint.

Abstract: The invention is concerned with a device for clamping and releasing work tools (16) in a tool receptacle (10). The tool receptacle (10) includes on its free end for this purpose an open socket part (12), which is adapted for frictional engaging reception of the work tool shaft (14). The work tool shaft is thereby shrunk-fit into a borehole (20) in the socket part (12). For this purpose the socket part is provided with an induction coil (26) encircling the tool receptacle (10) which coil can be acted upon by high frequency alternating current for producing heat and heating the socket part (12). For avoidance of leakage fields which could result in a undesired heating of the work tool (16), it is proposed in accordance with the invention that the induction coil (26), on its surface adjacent the free end of the socket part (12), is covered over by a pole shoe (34) having a central through hole (36) for the work tool (16) and comprised of a magnetically conductive and electrically non-conductive material.

Abstract: A method for manufacturing a vehicle frame assembly includes the initial steps of providing first and second structural components, disposing portions of the first and second structural components in an overlapping relationship, and generating an electromagnetic field that causes at least one of the overlapping portions of the first and second structural components to move into contact with the other of the overlapping portions of the first and second structural components at a high velocity so as to be joined together to form a joint. Third and fourth structural components are provided. The third and fourth structural components are joined to the first and second structural components together to form a vehicle frame assembly.

Abstract: A method of microbially decontaminating at least one of a defined area and an item within the defined area. The method includes the steps of (a) inductively heating a block comprising an electrically non-conductive material and an electromagnetically responsive material; (b) passing an atomized liquid into an interior passage defined by the block, wherein the inductively heated block vaporizes the atomized liquid that contacts walls of the passage to form an antimicrobial vapor; and (c) flowing the vapor out of the block to the defined area to microbially decontaminate at least one of the defined area and the item.

Abstract: The present invention relates to heating of samples in specimen carriers, and more particularly to the heating of zones of a specimen carrier for differential heating of samples in a specimen carrier, including a specimen carrier in the form of a metallic sheet, in which a matrix of sample wells is incorporated, apparatus for applying electrical heating current through the carrier, having a plurality of electrical current sources, each connected in series across the carrier and together providing a variety of different possible current flow paths whereby localised regions of the carrier may be selectively heated. The current applied is either alternating current, or direct current.

Abstract: A microtiter plate system includes an integral heater. In an embodiment, the integral heater includes a heater plate. In another embodiment, the integral heater includes resistive heater wires positioned beneath and/or between the wells of a microtiter plate. In an embodiment, the microtiter plate system includes optically clear well bottoms that permit sensing and measurement of samples through the optically clear well bottoms. In an implementation, an optically clear heater is positioned beneath the optically clear well bottoms. In an alternative implementation, resistive heater wires are positioned between the wells. In an embodiment, the microtiter plate system includes a microtiter plate lid with an integral heater, which can be implemented using a heater plate, resistive wires, and the like.

Abstract: A production/injection line including a production/injection tube and heating apparatus for heating of the production/injection tube. The line also includes insulation and heat conductive material to control the heat transfer from the heating apparatus towards the production/injection tube. A method is also described for supplying heat to a production/injection line in which cooling fluid from a process on an installation is supplied to transport channels extending along a production/injection tube. Methods are also described for manufacturing a production/injection line.

Abstract: A method of induction heat treatment of articles having curved outer surfaces, such as differential housings. The method employs a semi-rectangular induction coil that is adapted to provide a plurality of lateral magnetic fields that are used to induce currents in, and thereby provide heat to, a portion of the curved section of the article. The method and induction coil are particularly adapted to provide an induction hardening heat treatment of a curved heat treatment portion of a differential housing. The differential housing was cast from nodular iron. The induction-hardening heat treatment comprised heating the heat treatment portion of the differential housing above the austenite transition temperature and quenching to below the martensite transformation temperature.

Abstract: A heating apparatus includes a coil for generating a magnetic field; a heating element for generating heat by eddy currents generated by the magnetic field; an electroconductive member for generating an electromotive force by a current flowing through the coil; and an electric circuit for generating a voltage by electrical collection from the electroconductive member.

Abstract: A heating apparatus which is installed in a low pressure CVD system or annealing equipment for use in semiconductor integrated circuit manufacturing processes for heat-treating wafers on which IC's are to be formed, wherein wafers are uniformly heated, the temperature of wafers is rapidly raised and lowered, and wafers are processed in high volume, wherein the apparatus comprises a cylindrical body made of glass-like carbon placed inside a reactor, and a high-frequency induction coil which is placed outside the reactor and is for causing the cylindrical body made of glass-like carbon to produce heat and thereby heating wafers in the reactor.

Abstract: A method of controlling the temperature of a biological specimen by using induction heating. The specimen is either fixed to a carrier or is in liquid form in contact with a carrier with fixed capture probes. The carrier is removably placed in proximity to a solid support member with a conducting material, and the solid support is subjected to an oscillating magnetic field. The carrier and support member are preferably a microscope slide and a cartridge, respectively.

Abstract: Apparatus and methods for single sheet forming using induction heating include a pair of dies defining a die cavity for containing a workpiece, which is inductively heated by an oscillating magnetic field within the die cavity. A susceptor is positioned between the workpiece and one die surface defined by one of the dies. The susceptor is capable of coupling with the oscillating magnetic field to induce a current within the susceptor to heat the susceptor. The susceptor transfers heat to the workpiece. An inlet for pressurized forming fluid injects the fluid between the susceptor and the workpiece to form the workpiece into direct contact with a forming surface defined by one of the dies. The susceptor may be electrically connected to the workpiece to inhibit electrical arcing from the susceptor to adjacent electrically conductive components when current is induced in the susceptor.

Abstract: An induction heater (14) for use in conjunction with an associated furnace (10) for material processing includes essentially straight induction coil (16, 50) arranged inside the furnace shell (12). The induction coil (16, 50) has an attachment end (32, 54) extending outside of the furnace shell through a first opening (40) therein. A replacement induction coil (54R) is selectively connected with the attachment end (32, 54) of the induction coil (16, 50) and slidably inserted into the furnace shell (12) whereby the essentially straight induction coil (16, 50) is simultaneously slidably pushed out of the furnace shell (12) through a second opening therein.

Abstract: A vaporizer heating apparatus is comprised of electromagnetically responsive material and electrically non-conductive material. A antimicrobial fluid to be vaporized, such as water or hydrogen peroxide solution, is supplied to the heating apparatus where it is converted to a vapor. In one embodiment of the present invention, electromagnetically responsive material particulate is embedded into the electrically non-conductive material. In another embodiment of the present invention, a microwave generator is used to produce heat.

Abstract: An apparatus and method for induction hardening a workpiece can first include fastening a workpiece in a clamping assembly. The clamping assembly is provided with a plurality of hardness testing devices. Alternatively, one or more hardness testing devices are provided directly to the induction hardening head. The induction hardening head is moved over the workpiece to harden a portion thereof, such as an edge. Then, a series of hardness measurements are taken with the plurality of hardness testing devices to allow an operator or controller to adjust the input to the induction hardening head. This allows the workpiece to be provided with a predetermined hardness profile within a desired tolerance.

Abstract: The induction coil (13) of an arrangement which heats a tool-holder (1) inductively for the purpose of changing a tool shank (11) retained with a press-fit therein has a winding (19), in the case of which the number of coil turns per unit of length in the direction of the coil axis and/or the number of coil turns per unit of surface area is smaller in an intermediate region located, in the direction of the coil axis, between two main winding regions (21, 23) than in the two main winding regions (21, 23) and/or the internal winding diameter is smaller in the two main winding regions (21, 23) than in the intermediate region and/or, at least in an axial sub-region of the induction coil (13), increases from the two main winding regions (21, 23) in the direction of the intermediate region.

Abstract: An apparatus and a method for forming a localized joint in at least one structural member are provided. The apparatus includes a tool that corresponds to a joint portion of the structural member. An induction coil is disposed in the tool, and a power source is configured to energize the induction coil. A susceptor disposed between the tool and the structural member has a Curie temperature at which the susceptor becomes paramagnetic such that an electromagnetic field induced in the susceptor by the induction coil heats the susceptor to the Curie temperature for forming the joint.

Abstract: A process for producing a barrel for a twin-screw extruder with intermeshing screws from a steel block, wherein the barrel has a wear resistant inner surface, includes producing two partially intersecting bores passing completely through the steel block, the two intersecting bores forming a spectacle-shaped bore having narrowed regions where the two intersecting bores intersect, and hardening an inner surface of the spectacle-shaped bore with essentially constant depth of penetration by passing an inductor through the spectacle-shaped bore from one end to the other, the inductor is smaller than but having approximately the same shape as the inner contour of the spectacle-shaped bore and is configured such that less energy for heating the inner surface of the spectacle-shaped bore is delivered in the vicinity of the two narrowed regions of the spectacle-shaped bore by the longitudinal sections on the periphery of the inductor than in regions on the inner contour remote from the narrowed regions.

Abstract: A method of performing regional heating of a system having a substrate. The method may include applying a thin film to the system, and controllably energizing a coil positioned near the thin film. The energized coils thereby generate a magnetic flux. The method further includes inducing a current in the thin film with the magnetic flux thereby heating the system.

Abstract: An apparatus for inductively heating a sleeve section, having a central holding opening for a shank of a rotary tool, of a tool holder that holds the shank in the holding opening in a press fit and releases it upon heating. The apparatus includes an induction coil arrangement with at least one induction coil, a generator that feeds the induction coil arrangement with electric current of periodically varying amplitude, and a yoke arrangement of magnetizable material, which concentrates the magnetic flux of the induction coil onto the sleeve section in a fashion distributed all around. The induction coil is axially offset from the tool holder axis of rotation, in particular substantially radially next to the axis of rotation, and does not wrap around the section. Furthermore, the induction coil includes a coil core, of magnetizable material, that is connected in a magnetically conducting fashion to the yoke arrangement.

Abstract: The invention relates to a shrinking device (1) for shrinking a rotary tool (5) into a central receiving opening of a toolholder (3) which holds said rotary tool (5) in a press fit. The device comprises an induction heating device (15, 18) for thermally expanding the toolholder (3) in the area of the receiving opening. A cooling device (51, 53) with at least one cooling collar (53) which can be placed on the toolholder (3), in physical contact with the same, and through which a liquid coolant can flow, is provided for cooling the receiving opening area of the toolholder. This liquid cooling considerably reduces the overall time span needed for the shrinking process.

Abstract: An induction furnace, according to one embodiment of the invention, includes an induction heating system and a chamber that comprises a quartz cylinder, a top cover for sealing the top end of the cylinder, and a bottom cover for sealing the bottom end of the cylinder. The induction heating system includes a power supply and a coil. The coil surrounds the chamber. Contained within the chamber is a susceptor that is susceptable to induction heating. Also contained in the chamber is a thermal insulator that is disposed between the susceptor and the inner walls of the chamber. The insulator includes a fused quartz container in which the susceptor and the workpiece are contained.

Abstract: A short ring is provided outside a support frame. In the short ring, eddy current is generated in such a direction as to cancel apart of a magnetic flux developed from the exciting coil when it is fed with current, which the part of the magnetic flux leaks to outside. When the eddy current is generated, a magnetic field is developed in such a direction as to cancel the magnetic field by the leaking flux, as taught by Fleming's law. The result is that unnecessary radiation by the leaking flux is prevented, and hence noise generation in other members or devices is suppressed.

Abstract: A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt and a heat and pressure source that heats a treatment strip and the belt seam region and that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat and pressure source can be a heated pressure bar engaging the entire seam region or a heated pressure wheel traversing the seam region of the entire belt width.

Abstract: A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enable bonding of the joining surfaces, and thereafter the joining surfaces brought into contact with one another and twisted to attain a permanent metallurgical weld at the interface of the joining surfaces.

Abstract: Method and apparatus for melting a material and squeezing the melted material through casing perforations into a fault within the cement or formation of an oil or gas well. A heating tool carries solid material which is melted at depth within the well and adjacent to the casing perforations. The liquefied material is forced through the perforations and into the formation or the well cement. When the material cools and solidifies, the faults become sealed.

Abstract: A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enable bonding of the joining surfaces, and thereafter the joining surfaces brought into contact with one another and twisted to attain a permanent metallurgical weld at the interface of the joining surfaces.

Abstract: The invention is of a portable stripping head induction heating system and associated method of use thereof which system and method is useful in heating metallic components to which protective coatings or linings are applied for enabling their easy removal.

Abstract: The induction coil of a device that heats a toolholder (1) inductively for the tool change comprises a shielding collar (27) of magnetizable material which, firstly, concentrates the magnetic flux of the induction coil (13) in a sleeve section (5) of the toolholder (1) which holds the shaft (11) of a rotary tool with a press fit and, secondly, shields the part of the tool shaft (11) that projects out of the sleeve extension (5), in order to facilitate unclamping the tool from the toolholder (1). On its side facing the winding (19) of the induction coil (13) axially, the shielding collar (27) has an outer circumferential surface (31) which widens conically away from the sleeve extension (5) and an axial height (h) which is at least 1.5 times the diameter (d) of the tool shaft (11). The shielding collar (27) runs on all sides at a distance from a yoke shell (23) of magnetizable material which encases the winding (19) of the induction coil (13).

Abstract: An RFID-based induction heating/vending system for quickly and efficiently heating, vending, and recollecting stadium seats (10) or other objects. The system includes a plurality of objects each including an induction-heatable body (22), a charging/vending station (12) for heating and vending the objects; a self-serve warming station (14) that may be used by consumers to reheat their objects; and a check-out station (16) that automatically collects objects from consumers after use.

Abstract: An apparatus for effectively heating a green tire generates heat to a metal member embedded therein using electromagnetic induction, to complete a heating formation of a green tire in a sufficiently short time. Particularly, in the thick portion of the green tire which is hard to heat, the efficiency of heat generation due to electromagnetic induction is increased by effectively concentrating a high frequency magnetic field on the metal member embedded therein. The apparatus for heating a green tire comprises a local heating coil for forming high frequency magnetic field along a portion of extending direction of a metal member, a high frequency power supply for supplying high frequency power to the local heating coil, and a mechanism for moving the local heating coil relatively in the extending direction of the metal member.

Abstract: A method for manufacturing a vehicle frame assembly includes the initial steps of providing first and second structural components, disposing portions of the first and second structural components in an overlapping relationship, and generating an electromagnetic field that causes at least one of the overlapping portions of the first and second structural components to move into contact with the other of the overlapping portions of the first and second structural components at a high velocity so as to be joined together to form a joint. Third and fourth structural components are provided. The third and fourth structural components are joined to the first and second structural components together to form a vehicle frame assembly.

Abstract: A spatula heating apparatus with excellent usability which overcomes drawbacks inherent to conventional gas burner type and electro-thermal type apparatuses. A spatula heating apparatus for heating spatulas 9, 9a for wax molding includes a heating coil 8 for induction-heating of spatulas 9, 9a, a heating amount setting switch 5, and an inverter control circuit 21 for supplying high frequency current to the heating coil 8 to perform heating at a preset heating amount. When high frequency current is applied to the heating coil 8, the spatulas 9, 9a are heated at the preset heating amount through electromagnetic induction.

Abstract: A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt and a heat and pressure source that heats a treatment strip and the belt seam region and that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat and pressure source can be a heated pressure bar engaging the entire seam region or a heated pressure wheel traversing the seam region of the entire belt width.

Abstract: Inductive heating elements are provided with a specific configuration that results in a thermal wave that moves along a smoking device during a cleaning process, and control circuitry that maintains resonant conditions for maximum efficiency and power transfer during the thermal cleaning of the smoking device. A secondary can is positioned around electrical heater blades that contact the cigarette, and is configured to by preferentially heated by the induction of current within the can for the removal of condensates formed within the smoking device through extended periods of use.

Abstract: A method and a device for the removal of rust and paint from a metal surface, wherein induction heat is used for heating the metal surface. The device includes an electrical power supply coupled to an induction coil. A wheel and a tachometer on the device measure the velocity of the device as the wheel rotates on the metal surface. A control unit regulates the power output of the electrical power supply based upon the measured velocity of the device.

Abstract: A high-frequency induction-heating device preferably comprises an introduction part which introduces a gas to be treated; a pyrolysis part which pyrolyzes the gas to be treated; an induction heating coil provided around the outer circumference of the pyrolysis part so as to surround and heat the pyrolysis part, and an exhaust part which exhausts the gas having been decomposed in the pyrolysis part; wherein the pyrolysis part comprises a cylindrical body both ends of which are sealed, slits which communicate the interior with the exterior of the cylindrical body provided on the outer surface of the cylindrical body, and a communication pores to be communicated with an introduction tube which introduces the gas to be treated into the interior of the cylindrical body.

Abstract: Inductive heating elements are provided with a specific configuration that results in a thermal wave that moves along a smoking device during a cleaning process, and control circuitry that maintains resonant conditions for maximum efficiency and power transfer during the thermal cleaning of the smoking device. A secondary can is positioned around electrical heater blades that contact the cigarette, and is configured to be preferentially heated by the induction of current within the can for the removal of condensates formed within the smoking device through extended periods of use.

Abstract: A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enable bonding of the joining surfaces, and thereafter the joining surfaces brought into contact with one another and twisted to attain a permanent metallurgical weld at the interface of the joining surfaces.

Abstract: The induction coil of a device that heats a toolholder (1) inductively for the tool change comprises a shielding collar (27) of magnetizable material which, firstly, concentrates the magnetic flux of the induction coil (13) in a sleeve section (5) of the toolholder (1) which holds the shaft (11) of a rotary tool with a press fit and, secondly, shields the part of the tool shaft (11) that projects out of the sleeve extension (5), in order to facilitate unclamping the tool from the toolholder (1). On its side facing the winding (19) of the induction coil (13) axially, the shielding collar (27) has an outer circumferential surface (31) which widens conically away from the sleeve extension (5) and an axial height (h) which is at least 1.5 times the diameter (d) of the tool shaft (11). The shielding collar (27) runs on all sides at a distance from a yoke shell (23) of magnetizable material which encases the winding (19) of the induction coil (13).

Abstract: An apparatus and process are provided for induction heat treatment of electrically conductive workpieces. The inductor assembly is formed from a single piece inductor that utilizes an electrically non-conductive top, side and bottom frames to hold flux concentrators in place over the sides of the inductor. Flux concentrators can be changed by unfastening the frame members, removing the existing flux concentrators, inserting new flux concentrators, and fastening the frame members. One or more of the frame members may serve as a receiving chamber for supply of a quench medium to an induction heated workpiece positioned in an opening in the inductor.

Abstract: An upper ring for an induction furnace. The upper ring is cast as one piece in a holder off of the furnace. The precast upper ring may be used as a replacement for the cast in place upper rings present on previously installed furnaces or may be used in the construction of new furnaces. The electromagnetic induction coil of the furnace may be modified to include cooling turns at its upper end when the holder with the one piece cast upper ring is installed on the furnace.

Abstract: The invention relates to a device (11) and a method of regulating a temperature of a drive element (2) which can be employed in a deep-freezing application in particular, such as a band, belt or similar, in which at least a part-region of the drive element (2) is heated at least during a relative displacement between the drive element (2) and a machine part. The drive element (2) is adjusted to a pre-definable minimum temperature and a pre-settable minimum temperature is maintained. To this end, the device (11) has at least one module (12), which supplies the drive element (2) with mechanical, electrical or electromagnetic energy, for example.

Abstract: The present invention relates to apparatuses for continuous and efficient heat-treatment of semiconductor films upon thermally susceptible non-conducting substrates at a minimum thermal budget, and more particularly, to a polycrystalline silicon thin-film transistors (poly-Si TFTs) and PN diodes on glass substrates for various applications of liquid crystal displays (LCDs), organic light emitting diodes (OLEDs), and solar cells. According to the apparatuses of the present invention, the semiconductor films can be heat-treated without damaging the thermally susceptible substrates: e.g., crystallization of amorphous silicon films at the minimum thermal budget acceptable for the use of glass, enhancing kinetics of dopant activation at the minimum thermal budget acceptable for the use of glass.

Abstract: An apparatus and method for heat treating a structural member, for example, to relieve stresses therein, are provided. The structural member is restrained in a die cavity by one or more inflatable bladders so that a desired dimensional accuracy is achieved. The structural member can be heated by an electromagnetic field generator, such as an induction coil, that heats one or more susceptors to a characteristic Curie temperature. The apparatus can be used to process structural members of various sizes and shapes, and the heating and cooling cycle can be performed relatively quickly.

Abstract: A magnetic coil arrangement for a magnetic field applicator (1) which heats magnetic or magnetizable substances or solids in biological tissue is disclosed which includes a coolable magnetic yoke (2) with two spaced, opposing pole shoes (7, 8) separated from each other by a exposure volume gap (12) on the magnetic yoke (2). A magnetic coil (22) is assigned to each of the two pole shoes (7, 8) to produce a magnetic alternating field. The magnetic coils are designed as disk coils with helicoidally extending coil windings (39) respectively surrounding the pole shoe end of the assigned pole shoe (7, 8) with a surrounding magnetic coil/pole shoe gap (57). According to the invention, the magnetic coil (22) is respectively arranged in a coil box annularly surrounding the assigned pole shoe (7, 8), with the coil box (9, 10) being provided with at least one cooling air admission port (51, 52, 53) for connection of a cooling air pump and with at least one cooling air discharge port (57, 66).

Abstract: The invention relates to a method for improving the mechanical properties, especially the hardness, of journal crosses for use in articulated shafts. According to the invention, a superficial area which is defined by the transition surfaces between two journals that are adjacent to each other in the peripheral direction and the superficial areas of the peripheral surfaces of the adjacent journals that point in the peripheral direction is induction-hardened in one method step and then quenched with cooling agents.