Patent classifications
C21D9/00
Methods of modifying material properties of workpieces using high-pressure-torsion apparatuses
Described is a method of modifying material properties of a workpiece using a high-pressure-torsion apparatus, comprising a working axis, a first anvil, a second anvil, and an annular body, comprising a first conductive chiller, a second conductive chiller, and a heater, positioned between the first conductive chiller and the second conductive chiller along the working axis. The method comprises compressing the workpiece along a central axis of the workpiece and, simultaneously with compressing the workpiece alone the central axis, twisting the workpiece about the central axis. The method further comprises, while compressing the workpiece along the central axis and twisting the workpiece about the central axis, translating the annular body along the working axis of the high-pressure-torsion apparatus, collinear with the central axis of the workpiece, and heating the workpiece with the heater.
Batch furnace for annealing material and method for heat treatment of a furnace material
The present invention relates to a batch furnace for annealing material comprising a furnace housing which has a closable loading opening, a receiving chamber for furnace material and a device for convective heat transfer to the furnace material by a heat transfer medium, wherein the device for convective heat transfer comprises at least one heating device and at least one fan which is arranged in the furnace housing wherein the receiving chamber is arranged on the suction side of the fan and at least one nozzle array is arranged on the pressure side of the fan, wherein the nozzle array has a central opening which forms an intake duct of the fan and the nozzle array projects radially beyond the fan. The invention further relates to a method for heat treatment of a furnace material.
Dispersion strengthened austenitic stainless steel article, method for manufacturing same and product made of same
An objective of the invention is to provide an austenitic stainless steel article having superior irradiation resistance and stress corrosion cracking resistance than before while maintaining mechanical properties equivalent to those of conventional ones. There is provided a dispersion strengthened austenitic stainless steel article, including: 16-26 mass % of Cr; 8-22 mass % of Ni; 0.005-0.08 mass % of C; 0.002-0.1 mass % of N; 0.02-0.4 mass % of O; at least one of 0.2-2.8 mass % of Zr, 0.4-5 mass % of Ta, and 0.2-2.6 mass % of Ti; and a balance consisting of Fe and inevitable impurities. The Zr, Ta and Ti components form inclusion particles in the stainless steel article by combining with the C, N and O components. The stainless steel article has an average grain size of 1 m or less and a maximum grain size of 5 m or less.
Oven for cleaning molds, die nozzles and components for apparatuses for processing plastic materials in general
An oven for cleaning molds, die nozzles and components for apparatuses for processing plastic materials in general, comprising a basket adapted to contain the molds to be cleaned, and a heating bell adapted to heat the molds contained in the basket, the bell can be moved away and upward with respect to the die-carrying basket in order to facilitate access to the die-carrying basket.
Method for the manufacturing of Al—Mg—Si and Al—Mg—Si—Cu extrusion alloys
Method for the manufacturing of an AlMgSi(Cu) extrusion alloy, the alloy initially being cast to extrusion billet(s), containing in wt. % Si: 0.20-1.50 Mg: 0.25-1.50 Fe: 0.05-0.50 Cu: 0.00-1.00 Mn: 0.00-1.00 Cr: 0.00-0.50 Zn: 0.00-0.50 Ti: 0.00-0.20, and
including incidental impurities and balance Al.
Steel H-shape for low temperature service and manufacturing method therefor
Provided is a steel H-shape for low temperature service including a predetermined chemical composition. A CEV obtained by CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 is 0.40 or less. A sum of an area ratio of one or both of ferrite and bainite at a 1/4 position from an outer side across a thickness of a flange and a 1/6 position from an outer side across a flange width is 90% or more, and an area ratio of a hard phase is 10% or less. An effective grain size is 20.0 m or less, and a grain size of the hard phase is 10.0 m or less. 30 pieces/mm.sup.2 or more Ti oxides having an equivalent circle diameter ranging from 0.01 to 3.0 m are included. The thickness of the flange ranges from 12 to 50 mm.
Thermal treatment furnace
A thermal treatment furnace includes a thermal treatment chamber in which a thin metal sheet is continuously conveyed horizontally while being floated by air, in which the thermal treatment chamber includes a plurality of air injection nozzles and a plurality of mist spray nozzles that are arranged along a pass line of the thin metal sheet in the thermal treatment chamber, on a lower side and an upper side of the pass line and so as to be orthogonal to the pass line in a side view.
OBJECT-PROCESSING METHOD AND DEVICE
An object-processing method applies a specific process to an object to be processed by connecting a power source to the object to be processed.
BOLT AND FASTENED STRUCTURE
A bolt of the present invention has a composition comprising: 0.50 mass % or greater and 0.65 mass % or less of carbon (C), 1.5 mass % or greater and 2.5 mass % or less of silicon (Si), 1.0 mass % or greater and 2.0 mass % or less of chromium (Cr), 0.2 mass % or greater and 1.0 mass % or less of manganese (Mn), 1.5 mass % or greater and 5.0 mass % or less of molybdenum (Mo), wherein a total amount of phosphorous (P) and sulfur (S) as impurities is 0.03 mass % or less, the remaining is iron (Fe), and the bolt comprises an iron based oxide film with a film thickness of 3 m or greater and 20 m or less on the surface thereof. The bolt has excellent delayed fracture resistance and reliably provides a fastening axial force.
Method for producing a metal product
A method for producing a metal product, wherein in a strand casting system, liquid metal is output as a slab from a mold vertically downward in a conveying direction, is guided along a strand guide, and is deflected into the horizontal, wherein the slab is heated in a furnace or inductively downstream of the stand casting system.