Abstract: An induction heating system for a silicon steel core with a self-adhesive coating that includes an induction heating device having a columnar induction heating coil with a hollow cavity that carries out induction heating on a silicon steel plate at a medium frequency of 6-20 KHz. By rapid induction heating at a medium frequency, a silicon steel core with a self-adhesive coating can be rapidly cured, thereby greatly shortening the processing time, improving production efficiency, and facilitating automated operation in the production of a silicon steel core with a self-adhesive coating. The system also ensures the quality of the cured core products that can be widely applied in the field of the production of silicon steel cores with a self-adhesive coating.

Abstract: Provided are a roughly-shaped steel material for a nitrided part, and a nitrided part obtained by nitriding the roughly-shaped steel material for a nitrided part, having a determined chemical composition, in which the portion with a diameter or width ranging from 60 to 130 mm of the roughly-shaped steel material for a nitrided part has a microstructure at a depth of 14.5 mm from a surface including, in terms of area fraction: tempered martensite and tempered bainite in total: from 70 to 100%; remaining austenite: from 0 to 5%; and a balance: ferrite and perlite; and has a microstructure at a depth of 15 mm or more from the surface including, in terms of area fraction: tempered martensite and tempered bainite in total: from 0 to less than 50%; remaining austenite: from 0 to 5%; and a balance: ferrite and perlite.

Abstract: A method for manufacturing a trunnion for a constant velocity joint, the trunnion having a plurality of journal units provided outside around a hub unit, the method including a first step of manufacturing the trunnion, a second step of thermally treating a rounded outer circumferential surface of the journal unit, and a third step of thermally treating a connection unit disposed between the journal unit and the hub unit and having a diameter smaller than that of the journal unit.

Abstract: An apparatus for forming an aluminum plate is provided. The apparatus includes an upper die that has a bottom surface that corresponds to a top shape of a product shape to be formed and descends by a press to press the aluminum plate. The apparatus also includes a lower die that has an upper surface that corresponds to a bottom shape of the product shape and an electrode unit that is inserted into the lower die and is exposed on the upper surface of the lower die to apply a current to a bent portion of the product shape.

Abstract: The invention relates to a motor vehicle component 1, in particular a B pillar and similar shaped components. The motor vehicle component 1 has a shaped, in particular hot-formed or cold-formed, base member 2 of sheet steel. The base member 2 has a surface portion 3 which is provided with holes 7. According to the invention, the surface portion 3 has a tensile strength Rm greater than or equal to (?) 1250 MPa. A hole pattern 6 which comprises at least three holes 7 forms a deformation influence zone 8 in the surface portion 3. The surface portion of the holes 7 in the surface portion 3 is between 7% and 60% and the holes 7 have a diameter d of up to 30p mm.

Abstract: The invention relates to a method and to a device for heat treating a metal component. The method comprises at least the following steps: a) heating the component; b) setting a temperature difference between at least one first sub-region and at least one second sub-region of the component; c) at least partially forming and/or cooling the component in a press hardening tool; and d) mechanically post-processing the at least one first sub-region of the component.

Abstract: An apparatus and a method for rapidly heating cold-rolled strip steel (10). The apparatus for rapidly heating cold-rolled strip steel (10) comprises a heating zone, a soaking zone, and a cooling zone, and the heating zone is sequentially divided into a first heating section (1), a second heating section (2), a third heating section (3), and a fourth heating section (4) along a moving direction of the strip steel (10) to be heated, the first heating section (1) and the fourth heating section (4) being radiant heating sections, and the second heating section (2) and the third heating section (3) being inductive heating sections. The method for rapidly heating cold-rolled strip steel (10) uses the apparatus for rapidly heating cold-rolled strip steel (10) to heat the strip steel (10).

Abstract: Provided are a stainless steel sheet with good corrosion resistance, low contact resistance and good press workability without the use of expensive materials such as gold or rare metals, and a method of manufacture the same. A method of manufacturing a stainless steel sheet includes: preparing a slab having a chemical composition including, in mass %: 20 to 26% Cr, up to 0.1% N, up to 2.0% Si, etc. (step S1); performing hot rolling and cold rolling on the slab to produce a rolled steel sheet with a thickness of 50 to 200 ?m (step S2); an annealing step in which the rolled steel sheet is annealed and cooled in a gas atmosphere containing nitrogen (step S3); and pickling the rolled steel sheet after the annealing step with a solution containing a non-oxidizing acid (step S4). The stainless steel sheet has an N content of 0.6 to 2.0% by mass.

Abstract: An induction heating system for molding a thermoplastic article includes a first mold and a second mold defining a mold cavity therebetween for molding the thermoplastic article, a first metallic susceptor as part of or adjacent to the first mold, a first armature-supported induction coil array in proximity to the first metallic susceptor, and a first induction generator electrically coupled with the first armature-supported induction coil array.

Abstract: The present disclosure involves a method for determining the critical local expansion of a component with an eye toward the appearance of edge cracks based on an expansion of the component in the shaping process. Given a local expansion of the component at the edges that is smaller than the critical local expansion, no edge cracks arise that are larger than 1 ?m. In particular, at least one expansion test is performed with at least one test component, and a critical overall expansion is determined with the at least one expansion test. The local maximum expansion of the test component is determined that the test component exhibits at the time of the critical overall expansion of the test component, and the local maximum expansion is the critical local expansion.

Abstract: Systems and methods are provided that are used in curing a foam item. Induction heating assemblies, cooling mechanisms and a dynamic conveyance mechanism may be used in combination to heat and cool a mold containing the foam item as it is conveyed. The dynamic conveyance mechanism may have removable rollers that allow for chambers, such as the induction heating assemblies, to be placed into areas where removable rollers have been removed. As such, utilizing a dynamic conveyance mechanism chambers to be placed into, taken out of and moved around the dynamic conveyance mechanism. The flexibility of a dynamic conveyance mechanism allows for a curing process to be automated, adjusted, and customized.

Abstract: A machine learning apparatus includes a state observing unit and a learning unit. The state observing unit observes a state variable comprised of at least one of an adhesion state, a dielectric strength voltage, an electric heating time temperature, and an actual electric heating time value of a coil electrically heated by a coil electric heating unit, and at least one of an electric heating time command value, a voltage, and a current in the coil electric heating unit. The learning unit performs a learning operation by linking at least one of an adhesion state, a dielectric strength voltage, an electric heating time temperature, and an actual electric heating time value of the coil observed by the state observing unit to at least one of the electric heating time command value, the voltage, and the current, which are observed by the state observing unit.

Abstract: An improved surgical apparatus actuator includes a nail bin assembly (1002), a nail anvil assembly (1001) connecting with the nail bin assembly (1002), and a drive assembly (1003) controlling the nail bin assembly (1002) and the nail anvil assembly (1001) to convert between opening and closing conditions. The nail anvil assembly (1001) includes a nail anvil plate (103) and a nail anvil seat (102), wherein the nail anvil plate (103) is provided on an inner side (1022) of the nail anvil seat (102), the nail anvil seat (102) has the structure, material and processing technology capable of providing high anti-bending performance, the nail anvil plate (103) is cold-punched from a thinner stainless steel sheet. Therefore, the processing difficulty of the components is reduced, and meanwhile, the ability of the actuator chuck to resist bending deformation is improved.

Abstract: Leaf springs, and methods of manufacturing thereof, having first and second sections, spaced apart along the length of said leaf spring, said sections are through hardened and tempered to achieve, respectively different levels of finished through hardness, are disclosed.

Abstract: System and methods relating to in-line heat-treating, hardening and tempering of material, such as for example, coiled steel into a roll-formed, hardened and tempered structural member having uniform or different targeted properties in selected zones of the structural member. The different targeted properties may be achieved by heating and/or cooling the material subject to certain parameters.

Abstract: Disclosed is an electric heating device capable of uniformly applying an electric current to a workpiece without causing abrasion of electrodes. An electric heating device includes a pair of electrodes for applying an electric current to a workpiece, and a pair of clamps for fixing the workpiece. The electrode extends along the surface of the workpiece in a direction perpendicular to an electric current direction while maintaining a constant length in the electric current direction, and sandwiches the workpiece therein. The clamp is arranged in the vicinity of the electrode, and sandwiches a part of the workpiece other than a part to be heated therein. A pressure at which the clamp sandwiches the workpiece therein is higher than a pressure at which the electrode sandwiches the workpiece therein.

Abstract: Leaf springs, and methods of manufacturing thereof, having first and second sections, spaced apart along the length of said leaf spring, said sections are through hardened and tempered to achieve, respectively different levels of finished through hardness, are disclosed.

Abstract: The invention relates to a screw having a head, an adjoining retaining section and a functional tip for use as a self-tapping screw. The functional tip is of greater hardness than the retaining section. The entire screw is made of hardened low-alloy carbon steel. The special feature of this screw is that its functional tip has a higher carbon and/or nitrogen content than its retaining section.

Abstract: The present invention provides a rhenium tungsten wire comprising 10 to 30 mass % of rhenium and balance of tungsten, and having a wire diameter D of 0.10-0.40 mm, wherein a tensile strength T (N/mm2) of the rhenium tungsten wire exists within a range specified by an equation (1). 6314.6×D2?7869.3×D+4516.3?T?5047.4×D2?7206.4×D+5129.2??(1). In a case where the medical needle is manufactured from the above rhenium tungsten wire, crack and breakage hardly occur at a time of performing a pressing work or a bending work, so that a production yield and durability of the resultant products can be greatly improved.

Abstract: Apparatus and method are provided for making the longitudinal temperature distribution of the bulbous end of a longitudinally oriented workpiece, such as a rail's head, generally uniform when the head has a non-uniform longitudinal temperature distribution. A combination of crown and skirt electric inductors is used to achieve the generally uniform temperature distribution by modulating the magnetic field intensity produced by current flow through one or more of the combination of crown and skirt inductors as required for the non-uniformly heated regions of the rail's head.

Abstract: A method of processing a metal alloy includes heating to a temperature in a working temperature range from a recrystallization temperature of the metal alloy to a temperature less than an incipient melting temperature of the metal alloy, and working the alloy. At least a surface region is heated to a temperature in the working temperature range. The surface region is maintained within the working temperature range for a period of time to recrystallize the surface region of the metal alloy, and the alloy is cooled so as to minimize grain growth. In embodiments including superaustenitic and austenitic stainless steel alloys, process temperatures and times are selected to avoid precipitation of deleterious intermetallic sigma-phase. A hot worked superaustenitic stainless steel alloy having equiaxed grains throughout the alloy is also disclosed.

Abstract: A steel for heat treatment, which exhibits high strength and high toughness even when the heat treatment (such as quenching and tempering) of the steel is conducted under conventional conditions in an after stage. The steel for heat treatment contains C: 0.10 to 0.70 mass %, Mn: 0.1 to 3.0 mass %, Al: 0.005 to 2.0 mass %, P: 0.050 mass % or less, S: 0.50 mass % or less, O: 0.0030 mass or less, N: 0.0200 mass % or less, and one or more selected from the group consisting of Ti: 0.30 mass % or less and Nb: 0.30 mass or less with the balance being Fe and unavoidable impurities, and has a TH value of 1.0 or above as calculated according to the formula: ({Ti}/48+{Nb}/93) 104 and grain diameters of 10 ?m or below. {Ti} and {Nb} refer respectively to the contents of Ti and Nb in precipitates of 5 to 100 nm in size as determined about their respective extraction residues.

Abstract: Improved induction heating of a rolling bearing without the risk of damaging or blocking the bearing is achieved by controlling the heating cycle as a function of the temperature difference between the inner and outer bearing rings and/or dividing the heating cycle into different portions using different power combinations of at least two induction coils.

Abstract: The present invention relates to a process for producing a pipe, particularly for supplying fuel to an engine, comprising the steps of: prearranging a pipe made of stainless steel (1), executing a hot-pressing operation at at least one end (3) of the pipe (1); and subjecting the at least one end (3) of the pipe (1) to heat treatment, followed by cooling.

Abstract: Provided is a manufacturing method of a hot-rolled steel sheet which enables manufacturing of a hot-rolled steel sheet having excellent surface properties and a fine structure. The manufacturing method of a hot-rolled steel sheet uses a heating device, descaling device, row of finishing mills, cooling device disposed in the row of finishing mills, and rapid cooling device disposed immediately after the row of finishing mills, and the operations of the heating device, cooling device and rapid cooling device are controlled, thereby controlling a temperature T1 of the material to be rolled on an entry side of the row of finishing mills, a temperature T2 of the material to be rolled on an entry side of a final stand in the row of finishing mills, and a temperature T3 of the material to be rolled on an exit side of the rapid cooling device.

Abstract: The invention relates to sheet steel for use as packaging steel, made of a non-alloy or low-alloy and cold-rolled steel having a carbon content of less than 0.1%. According to the invention, in order to use such sheet steel for packaging steel that has good formability and can be produced in a cost-effective way, the sheet steel contains less than 0.4 wt % of manganese, less than 0.04 wt % of silicium, less than 0.1 wt % of aluminum, and less than 0.1 wt % of chromium and is provided with a multi-phase structure, comprising ferrite and at least one of the structure constituents martensite, bainite, and/or residual austenite. The invention further relates to a method for producing such packaging steel from cold-rolled sheet steel.

Abstract: A steel product, such as a strip, plate, sheet, bar or wire, manufactured from austenitic stainless steel. A steel product, wherein: a—the average grain size of the recrystallized austenitic structure of said product is at most 6 , b—less than 50% of the structure of said product is non-recrystallized austenite c—the yield strength (Rpo.2) is at least 350 MPa, d—the tensile strength (Rm) is at least 600 MPa, and e—the uniform elongation (Ag) of said product is at least 5%, depending on the strength. The invention also relates to a method.

Abstract: A method for annealing a strip of steel having a variable thickness in its length direction with at least thicker and thinner sections, wherein the strip has been cold rolled to form the thicker and thinner sections, one thicker and one thinner section having a length of at most a few meter. The annealing is performed by continuous annealing.

Abstract: The present invention relates to an apparatus, system and method for heat treating metal parts that are stacked together and moved through an induction heating system and quench system. The present invention is specifically directed to an Induction Thermo Magnetic Processing (ITMP) apparatus, method and system which uses a magnetic field processing with induction high-frequency heat treatment to process metal components so as to inductively hardening materials.

Abstract: Bearing component having a surface at least one part of which has been surface hardened by induction heating. A cross section of the bearing component through said surface exhibits a hardness Hsurface at said surface, and remains substantially equal through a first region, a hardness Hcore at the non-hardened core of the bearing component and remains substantially equal through a third region and a transition, second region spanning between the first and third regions. The average hardness in the first region of the harness profile is Y1 and the average hardness in the third region of the harness profile is Y3 and the hardness profile in the second region has a section defined as a line between the points where 0<k<2, on the hardness profile. The hardness of said section of said second region decreases on average by less than 50 HCR per mm.

Abstract: A hot forming line for producing hot formed and press hardened steel sheet products, in particular motor vehicle parts includes a heating device and a forming device, wherein the heating device has a temperature treatment station with an upper tool and a lower tool and the temperature treatment station has a temperature source for heating, wherein exchangeable temperature treatment plates are arrangeable on the upper and/or the lower tool and the temperature source is constructed as inductor, and the temperature treatment plates can be heated by the inductor.

Abstract: A method for enhancing the formability of press-formed high strength, age-hardenable aluminum alloy sheet is disclosed. The sheet is partially formed when in an overaged condition, for example in a T7 or T8 temper condition, to form a preform. After an annealing and solutionizing process the preform is promptly further deformed in a second forming operation and subsequently aged to develop high strength. The method may be employed to form components of more complex shape from higher strength aluminum alloys such as 6000 series and 7000 series alloys.

Abstract: The invention relates to a method for manufacturing a ferritic-austenitic stainless steel having good formability, good weldability and high elongation. The stainless steel containing the sum of carbon and nitrogen C+N in the range 0.17-0.295 in weight % in which sum C+N a lower carbon content to avoid sensitisation during welding is compensated by an increased nitrogen content to maintain formability is heat treated so that the microstructure of the stainless steel contains 45-75% austenite in the heat treated condition, the remaining microstructure being ferrite, and the measured Md30 temperature of the stainless steel is adjusted between 0 and 50° C. in order to utilize the transformation induced plasticity (TRIP) for improving the formability of the stainless steel.

Abstract: Provided is a method for manufacturing a grain-oriented electrical steel sheet, the method comprising: heating a grain-oriented electrical steel sheet slab; hot-rolling the heated slab; optionally annealing the hot-rolled steel sheet; subjecting the resulting steel sheet to one cold rolling or two or more cold rollings with intermediate annealing therebetween; subjecting the cold-rolled steel sheet to primary recrystallization annealing; and subjecting the annealed steel sheet to secondary recrystallization annealing, wherein the primary recrystallization annealing sequentially comprises an ultra-rapid heating process of heating the steel sheet at an average heating rate of 300° C./sec or higher, a rapid heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the ultra-rapid heating process, but not lower than 100° C.

Abstract: A bearing component formed from a bearing steel, wherein the component has an outer surface and comprises through-hardened bainite and/or martensite and has a substantially homogeneous chemical composition, at least a part of the bearing component having a compressive residual stress profile comprising ?25 to ?1000 MPa at the near surface, wherein the near surface is defined as a region 500 microns or less below the outer surface.

Abstract: An induction heat treatment method with which temperature control is enabled, condition setting is easy, and the quality of a treatment object can be stabilized includes: a data acquiring step of heating and quench-hardening a sample of the treatment object to thereby acquire process data; a storing step of storing the process data; a checking step of checking the power supply output transition data and the quenching timing data as to validity based on the temperature transition data stored in the storing step; and a mass production step of performing heat treatment of the treatment object in accordance with the power supply output transition data and the quenching timing data stored in the storing step and checked as to validity in the checking step.

Abstract: A system and method of induction heat treating a gear includes a workstation. The workstation has a power source, an inductor coil, and a rotational mechanism. The gear is induction heat treated at a first portion of the gear and a second portion of the gear remains untreated by induction hardening. The gear has an inner surface. The inner surface includes the first portion and the second portion. The first portion has a first width. The second portion has a second width. The inductor coil includes at least one heating loop and at least one non-heating loop. The inductor coil is energized to a predetermined frequency to create an alternating magnetic field, where the alternating magnetic field developed in the heating loop induces an eddy current in the first portion of the gear.

Abstract: A method for heat treatment of a coiled spring includes cold forming a coiled spring, annealing the coiled spring after the cold forming, thereby removing of residual stress generated in the cold forming, in which the annealing is performed by electric resistance heating.

Abstract: A method of manufacturing a blade including heating and quenching a coil of strip steel material to harden the material, heating the strip steel material to temper the material, grinding a first angle along an edge of the material, and subsequent to the grinding, re-hardening, for example by induction heating, the edge of the material.

Abstract: Methods of refining the grain size of a titanium alloy workpiece include beta annealing the workpiece, cooling the beta annealed workpiece to a temperature below the beta transus temperature of the titanium alloy, and high strain rate multi-axis forging the workpiece. High strain rate multi-axis forging is employed until a total strain of at least 1 is achieved in the titanium alloy workpiece, or until a total strain of at least 1 and up to 3.5 is achieved in the titanium alloy workpiece. The titanium alloy of the workpiece may comprise at least one of grain pinning alloying additions and beta stabilizing content effective to decrease alpha phase precipitation and growth kinetics.

Abstract: Mechanical component (10) having a hole (12) extending therethrough and having a minimum thickness (T) of 7 mm, measured from an interior surface (12a, 12b) constituting the outer perimeter of the hole (12) radially outwards to an outer surface of said mechanical component (10). The maximum transverse dimension (d) of said hole (12) is 31.75 mm or less and that at least one part (22) of interior surface (12a, 12b) material of the mechanical component (10) constituting the outer perimeter of said hole (12) comprises a martensitic microstructure produced by induction hardening using an electromagnetic induction coil (14) positioned inside said hole (12) followed by immediate quenching using a quenching device (16) that is positioned inside said hole (12) when the electromagnetic induction coil (14) has been removed from said hole (12) or while the electromagnetic induction coil (14) is being removed from said hole (12).

Abstract: A system and method for producing locally austempered ductile iron includes a computer program for closely controlling the heating and cooling of an iron part or workpiece. The process allows for the austempering of a relatively low cost iron workpiece to produce significantly higher quality end products. The locally austempered regions may be formed to a substantial controlled depth.

Abstract: The invention relates to a method for manufacturing a ferritic-austenitic stainless steel having good formability and high elongation. The stainless steel is heat treated so that the microstructure of the stainless steel contains 45-75% austenite in the heat treated condition, the remaining microstructure being ferrite, and the measured Md30 temperature of the stainless steel is adjusted between 0 and 50° C. in order to utilize the transformation induced plasticity (TRIP) for improving the formability of the stainless steel.

Abstract: The invention relates to a process for the continuous heat treatment of steel strip material whose thickness d1, d2 periodically varies along its length, more particularly of strip flexibly rolled with a roll gap varying as a function of time, wherein the continuous heat treatment of the strip material takes place while the strip material passes through an induction furnace in which the strip material is induction heated at a constant frequency which can be selected to be such that the mathematical induction depth ? of the induced current up to which the magnetic field has been reduced to 63% of the field strength of the outer field is greater than half the thickness of the strip portions with the smallest thickness d2.

Abstract: Provided is a manufacturing method of a hot-rolled steel sheet which enables manufacturing of a hot-rolled steel sheet having excellent surface properties and a fine structure. The manufacturing method of a hot-rolled steel sheet uses a heating device, descaling device, row of finishing mills, cooling device disposed in the row of finishing mills, and rapid cooling device disposed immediately after the row of finishing mills, and the operations of the heating device, cooling device and rapid cooling device are controlled, thereby controlling a temperature T1 of the material to be rolled on an entry side of the row of finishing mills, a temperature T2 of the material to be rolled on an entry side of a final stand in the row of finishing mills, and a temperature T3 of the material to be rolled on an exit side of the rapid cooling device.

Abstract: A method of manufacturing a blade including heating and quenching a coil of strip steel material to harden the material, heating the strip steel material to temper the material, grinding a first angle along an edge of the material, and subsequent to the grinding, re-hardening, for example by induction heating, the edge of the material.

Abstract: A treatment for prevention of stress corrosion cracking (SCC) and a treated component are disclosed. A surface of a relatively high tensile strength component is heated to a temperature at which at least one of tempering or annealing occurs. The surface is then cooled in a controlled manner so as to maintain a reduced tensile strength at the surface that minimizes SCC while keeping a relatively high tensile strength in the remainder of the component.

Abstract: A process for producing a profile component from a semi-finished sheet metal part, which at least in certain sections has a structurally increased strength. The semi-finished sheet metal part is formed in an at least a single-stage bending process. The bending process and also subsequent parting and cutting operations on the semi-finished sheet metal part are combined with a thermal treatment of at least one geometrically delineated region of the semi-finished sheet metal part. The thermal treatment comprises at least one heating step and is combined with a subsequent cooling step, in such a way that the at least one geometrically delineated region has a structurally increased strength after cooling. Bending can be effected by using roller profiling wherein rollers are preferably cooled or swage bending.

Abstract: A method of manufacturing a blade including heating and quenching a coil of strip steel material to harden the material, heating the strip steel material to temper the material, grinding a first angle along an edge of the material, and subsequent to the grinding, re-hardening, for example by induction heating, the edge of the material.

Abstract: A conductive component and a method for treating the conductive component to modify conduction through the component are disclosed. The method includes heating the component such that annealing of an exterior layer of the component occurs without annealing of an interior layer of the component, wherein the interior layer is disposed adjacent to and integral with the exterior layer. The method further includes cooling the component such that annealing of the exterior layer ceases without annealing of the interior layer. The component includes an annealed exterior layer having a thickness of less than or equal to approximately 10 millimeters, and a non-annealed interior layer disposed adjacent to and integral with the exterior layer.