The invention relates to a device for temperature-controlling a component part. The device has a temperature-control zone, along which the component part is movable along a conveying direction. The temperature-control zone is configured to temperature-control at least one temperature-control section of the component part. Furthermore, the device has a temperature-control zone controller, which is configured to cover a covering region of the temperature-control zone such that in the covering region a temperature-control effect from the temperature-control zone on the temperature-control section of the component part is reducible. Herein, the temperature-control zone controller is configured so as to adjust the size of the covering region.

A system for supporting castings during thermal treatments, such as solution heat treatment, quenching and aging, that includes a tray defining a horizontal base plane and having a plurality of tray openings therethrough, and a fixture extending over one or more of the tray openings. The fixture is formed by a plurality of support plates oriented vertically with lower portions extending across the tray opening and top edges extending above the tray opening with shaped profiles along the lengths thereof. The plurality of support plates form an open lattice having a plurality of top edges that together define an open support surface that is substantially complementary with an underside surface of a casting and configured to loosely support the casting atop the lattice and align the casting in space above the tray opening.

In an embodiment, a sintered R-T-B based magnet according to the present disclosure has a composition as follows: R: not less than 27 mass % and not more than 37 mass % (R is at least one rare-earth element which always includes at least one of Nd and Pr), B: not less than 0.75 mass % and not more than 0.97 mass %, Ga: not less than 0.1 mass % and not more than 1.0 mass %, Cu: not less than 0 mass % and not more than 1.0 mass %, and T: 61.03 mass % or more (where T is at least one selected from the group consisting of Fe, Co, Al, Mn and Si and always includes Fe, such that the Fe content accounts for 80 mass % or more in the entire T). The molar ratio of T to B ([T]/[B]) is greater than 14.0. An R amount in a magnet surface portion is greater than an R amount in a magnet central portion, and a Ga amount in the magnet surface portion is greater than a Ga amount in the magnet central portion. A molar ratio of T to B ([T]/[B]) in the magnet surface portion is higher than a molar ratio of T to B ([T]/[B]) in the magnet central portion.

A method for the surface treatment of a metal workpiece, in particular of a coated metal workpiece, for hot forming includes partially or completely heating the workpieces to a temperature of at least Ac1, cleaning at least one surface of the heated workpiece with at least one pressurized air jet, forming the heated and cleaned workpiece, and cooling down the formed workpiece.

A thermal process device for heat treating a product or plurality of products includes a thermal processing chamber having opposed distal ends and a plurality of controllable heating zones. At least one buffer zone is disposed at each of the distal ends. The buffer zones and heating zones of the thermal processing chamber form a heating element assembly. The heating assembly has an inner and outer surface and a secondary shell is disposed about the outer surface of the heating element assembly and spaced therefrom to form an inlet flow passage for a flow of a temperature adjusting medium along the heating element assembly. A flow directing arrangement is configured to direct the flow of the temperature adjusting medium in the inlet flow passage to the different zones of the heating assembly to adjust the temperature in the heating zones, wherein a majority of the flow of the temperature adjusting medium is delivered to a central zone of the heating temperature assembly and then outward toward at least one of the distal ends.

The present invention relates to a vacuum heat treatment apparatus capable of charging or withdrawing an object into or from either a heating chamber or a cooling chamber by a transport means. The vacuum heat treatment apparatus includes: A vacuum heat treatment apparatus, including: a plurality of heating chambers charged with an object and subjected to a heat treatment process; a rail disposed between the plurality of heating chambers; a bogie moving while being disposed on the rail; a cooling chamber disposed on the bogie and cooling the object; and a transport means disposed on the bogie and provided to charge or withdraw the object into or from any one of the plurality of heating chambers and the cooling chamber.

A bearing bushing for a track has an annular shape including an inner peripheral surface, an outer peripheral surface, a first end face, and a second end face located axially opposite the first end face. The bearing bushing for a track includes an inner peripheral surface-side hardened layer formed to include the inner peripheral surface, an outer peripheral surface-side hardened layer formed to include the outer peripheral surface, a first end face-side hardened layer formed to include the first end face and having a region with a hardness of 63 HRC or more that has a thickness of 3 mm or more from the first end face, and an unhardened region lower in hardness than the inner peripheral surface-side hardened layer, the outer peripheral surface-side hardened layer, and the first end face-side hardened layer, and including at least the second end face. The bearing bushing is made of steel.

Disclosed herein are a ferritic stainless steel having excellent ridging properties and excellent surface quality of a final product by modifying a microstructure of a central area of a cross-section by further performing cold rolling before hot annealing.

A ferritic stainless steel according to the present disclosure includes, by wt %, 0.005 to 0.1% of carbon (C), 0.01 to 2.0% of silicon (Si), 0.01 to 1.5% of manganese (Mn), 0.05% or less of phosphorus (P), 0.005% or less of sulfur (S), 10 to 30% of chromium (Cr), 0.005 to 0.1% of nitrogen (N), 0.005 to 0.2% of aluminum (Al), and the remainder of iron (Fe) and other impurities, wherein a .sub.max value is in the range of 20% to less than 50%, and a surface microgroove area ratio is 2.0% or less.

A heating apparatus, a heat treatment apparatus, and a heating method are provided. The heating apparatus includes a workpiece support on which a ring-shaped workpiece is placed, a rotary drive assembly, and a heater configured to heat the workpiece. The workpiece support includes a plurality of rotating rollers arranged in a circumferential direction. The rotary drive assembly is configured to rotate the plurality of rotating rollers to rotate the workpiece placed on the workpiece support along a ring shape of the workpiece. The heater includes a heating coil configured to induction-heat the workpiece on the workpiece support at a heating position, and an actuator configured to move the heating coil at the heating position relative to the workpiece to adjust a distance between the workpiece and the heating coil.

A material and method for manufacturing components. The method includes squeeze casting the material into a component of a desired shape and flow-forming the component that has been squeeze cast to refine the shape of the component. The method also includes heat treating the component to enhance the microstructure of the component and machining the component to further refine the shape.