Disclosed is a connection structure that connects a housing to a magnetic annealing furnace that is provided with a fixedly arranged magnet and includes a first drum flange having a cylindrical flange portion. The connection structure includes: a second drum flange that is attached and fixed to the housing and includes a flange portion configured to externally or internally fit the flange portion of the first drum flange thereto; a first sealant that is installed between facing surfaces of the housing and the second drum flange; and a second sealant that is installed between facing surfaces of the first and second drum flanges.

A manufacturing method and a manufacturing apparatus for a head hardened rail to which various alloy elements are added and which is excellent in hardness and toughness of a head portion surface layer. The method includes, when forcibly cooling at least a head portion of a hot-rolled rail or a heated rail, starting the forcible cooling from a state where a surface temperature of the head portion of the rail is not less than an austenite range temperature, and performing the forcible cooling at a cooling rate of 10 C./sec or more until the surface temperature reaches 500 C. or more and 700 C. or less after the forcible cooling is started.

In an embodiment, a method of fabricating a working component for magnetic heat exchange comprises arranging at least two articles comprising a magnetocalorically active phase and an elongated form with a long axis having a length l and a shortest axis having a length s, wherein l1.5 s, such that the shortest axes of the at least two articles are substantially parallel to one another and securing the at least two articles in a position within the working component such that the shortest axes of the at least two articles are substantially parallel to one another within the working component.

A brazed joint having excellent tensile strength (TSS and CTS) and a method of production of the same are provided. A sheet combination 200 comprised of steel sheets 210, 220 between which a brazing filler metal 230 is clamped is heated at a temperature of the Ac3 point of the steel sheet (matrix material) or more. The Ar3 point of the regions near the brazing filler metal at the steel sheets is made higher than the Ar3 point of the steel sheets (matrix material), then the quenching start temperature X is made a temperature of the Ar3 point of the steel sheet (matrix material) or less and hot stamping is performed to produce a brazed joint.

A brazed joint having excellent tensile strength (TSS and CTS) and a method of production of the same are provided. A sheet combination 200 comprised of steel sheets 210, 220 between which a brazing filler metal 230 is clamped is heated at a temperature of the Ac3 point of the steel sheet (matrix material) or more. The Ar3 point of the regions near the brazing filler metal at the steel sheets is made higher than the Ar3 point of the steel sheets (matrix material), then the quenching start temperature X is made a temperature of the Ar3 point of the steel sheet (matrix material) or less and hot stamping is performed to produce a brazed joint.

An adjustable spacer with a non-hardened intermediate portion therebetween is mountable between a pair of roller bearings also mounted on a shaft such an axle or spindle or the like. The intermediate portion allows the spacer to collapse in the axial direction to maintain desired axial loads on the bearings.

A method of producing a working area for a root canal instrument includes the steps of providing a strand made of a nickel-titanium alloy, cutting the strand to a blank size of the working area, forming a tip in the working area, heat-treating the working area at a temperature of 400 to 430? C. for 25 to 40 minutes, quenching the heat-treated working area to room temperature, and producing the final geometry of the working area, wherein the nickel-titanium alloy contains exclusively nickel and titanium as metal components.

A cast lip for an excavating bucket composed of a ferrous alloy having at least seven percent chromium by weight, 3%-6% nickel by weight, and ?0.12% carbon by weight, and a primarily martensitic structure.

A high-strength stainless steel rotor and a method for preparing the same, are provided. The high-strength stainless steel rotor, including the following element components by mass percentage: C: 0.03-0.050%, Cr: 14.90-15.80%, Ni: 5.00-5.70%, Cu: 2.20-2.80%, (Nb+Ta): 0.35-0.44%, Mo: 0.45-0.54%, V: 0.06-0.10%, Si: 0.20-0.60%, Mn: 0.40-0.80%, P?0.010%, S?0.010%, O?0.003%, and the balance of iron and inevitable impurities.

The present invention relates to a steel for a mold including: on % by mass basis, 0.55%?C?0.70%; 0.30%?Si?0.60%; 0.55%?Mn?1.2%; 5.7%?Cr?6.9%; 1.2%?Mo+W/2?1.6%; 0.55%?V?0.79%; and 0.005%?N?0.1%, with the remainder being Fe and inevitable impurities including, Al?0.020%, Ni?0.20%, S?0.0015%, and Cu?0.10%, and satisfying P1?24 and 4.9?P2?7.3, P1 and P2 being a value obtained based on the following formula (1) and (2), respectively, P1=45?13.6[Si]?7.0([Mo]+[W]/2)?12.9[Ni] (1), P2=7.4[V]+15.8[N]+38.6[Al] (2) in which [M] represents a content of an element M in % by mass basis, and relates to a mold including the steel for a mold.