Abstract: A method for producing Cu—Sn-containing steel includes a hot heating step of attaching a flux to a surface of a Cu—Sn-containing cast steel in such an amount that the mass per unit area is 50 g/m2 or more and 5000 g/m2 or less, and heating the Cu—Sn-containing cast steel at a temperature of 1000° C. or above and 1400° C. or below, the flux including at least any of B2O3, P2O5, K2O, PbO, Na2O—FeO, Na2O—SiO2, Na2O—TiO2, and Li2O—SiO2 components and being such that the liquid phase ratio at 1000° C. is 10 mass % or more; and a hot working step of hot working the Cu—Sn-containing cast steel.

Abstract: A card reader includes a pulling-out prevention member turnable between a closing position where a card moving passage is closed and an open position and preventing pulling-out of a card having been inserted into a card reader at the closing position. The pulling-out prevention member is provided with a main body member and a card abutting member which closes the card moving passage when the pulling-out prevention member is located at the closing position. A rear end of the card abutting member is capable of contacting with a front end of the card having been inserted into the card reader when the pulling-out prevention member is located at the closing position. The main body member of the pulling-out prevention member is formed of resin, and the card abutting member is formed of material having a strength higher than a strength of the resin.

Abstract: A card reader includes a pulling-out prevention member turnable between a closing position where a card moving passage is closed and an open position and preventing pulling-out of a card having been inserted into a card reader at the closing position. The pulling-out prevention member is provided with a main body member and a card abutting member which closes the card moving passage when the pulling-out prevention member is located at the closing position. A rear end of the card abutting member is capable of contacting with a front end of the card having been inserted into the card reader when the pulling-out prevention member is located at the closing position. The main body member of the pulling-out prevention member is formed of resin, and the card abutting member is formed of material having a strength higher than a strength of the resin.

Abstract: A card reader may include a transport path; a housing; a magnetic head to read the magnetic information at a reading position of the transport; and a first inductive proximity sensor. The first inductive proximity sensor may include a first oscillation circuit; and first and second detection coils connected in parallel to the first oscillation circuit. The magnetic head may be accessible to the magnetic card from a first side of the transport path in a first direction perpendicular to a transport face of the magnetic card. Coil center lines of the first and second detection coils may extend in the first direction on the first side of the transport path. The first and second detection coils may be disposed adjacent to each other in the transport direction and structured to generate magnetic fields in opposite directions in the first direction when the first inductive proximity sensor is driven.

Abstract: A card reader may include a transport path; a housing; a magnetic head to read the magnetic information at a reading position of the transport; and a first inductive proximity sensor. The first inductive proximity sensor may include a first oscillation circuit; and first and second detection coils connected in parallel to the first oscillation circuit. The magnetic head may be accessible to the magnetic card from a first side of the transport path in a first direction perpendicular to a transport face of the magnetic card. Coil center lines of the first and second detection coils may extend in the first direction on the first side of the transport path. The first and second detection coils may be disposed adjacent to each other in the transport direction and structured to generate magnetic fields in opposite directions in the first direction when the first inductive proximity sensor is driven.

Abstract: A magnetic head structured to detect whether magnetic data are recorded on a medium or not may include a case provided with an opening part formed in a sensor face which faces a side where the medium is passed, a protection member positioned and disposed in the opening part with the sensor face as a reference, and a magneto-resistance effect element disposed in the opening part in a state that at least a part of the magneto-resistance effect element is covered by the protection member.

Abstract: There is provided a roll surface layer material including a roll surface layer with excellent fatigue resistance. The roll surface layer material has a composition including, on a mass % basis, C: 2.3% to 2.9%, Si: 0.2% to 0.8%, Mn: 0.2% to 1.0%, Cr: 5.0% to 7.5%, Mo: 4.4% to 6.5%, V: 5.3% to 7.0%, Nb: 0.6% to 1.5%, and Co: 0.1% to 4.0% so as to satisfy 14.0?(Mo+1.7V)?17.0 (where Mo represents a content (mass %) of Mo and V represents a content (mass %) of V) and further including Al: 0.001% to 0.03% and/or REM: 0.001% to 0.03%, wherein a carbide is contained at an area fraction of 13% to 40%. A composite roll obtained by integrally welding a shaft member to the roll surface layer member is treated as a centrifugal cast roll that includes a surface layer with excellent fatigue resistance.

Abstract: A centrifugal cast caliber roll for a hot rolling mill has excellent abrasion resistance, fatigue resistance, and slip resistance. The roll has a chemical composition containing, by mass %, C: 1.8% or more and 3.0% or less, Si: 0.2% or more and 1.0% or less, Mn: 0.2% or more and 1.5% or less, Cr: 5% or more and 9% or less, Mo: 4.0% or more and 7.0% or less, V: 4.0% or more and 7.0% or less, Nb: 0.5% or more and 2.0% or less, and the balance being Fe and inevitable impurities, in which the relationship 0.6?(C?0.24V?0.13Nb)?1.4 (where C, V, and Nb each denote the content (mass %) of the corresponding chemical element) is satisfied, and has a surface hardness of Hs 67 or higher and Hs 76 or lower in terms of shore hardness.

Abstract: A roll outer layer material contains small-size carbides having a circle equivalent diameter of 3 to 30 ?m in a number of 500 to 2500 pieces/mm2 and large-size carbides having a circle equivalent diameter of 50 ?m or more in a number of 20 pieces/mm2 or less, preferably having a chemical composition containing, by mass %, C: 2.4% or more and 2.9% or less, Si: 0.2% or more and 1.0% or less, Mn: 0.2% or more and 1.0% or less, Cr: 4.0% or more and 7.5% or less, Mo: 4.0% or more and 6.5% or less, V: 5.3% or more and 7.0% or less, Nb: 0.5% or more and 3.0% or less, and the balance being Fe and inevitable impurities, in which the contents of Cr, Mo, and V satisfy the relationship 1.5?(Cr+Mo)/V?2.4.

Abstract: A surface layer material of a hot rolling mill roll is provided. The surface layer has a chemical composition containing, by mass %, C: 2.4% or more and 3.5% or less, Si: 1.2% or more and 2.4% or less, Mn: 0.2% or more and 2.0% or less, Cr: 0.8% or more and 2.1% or less, Mo: 0.3% or more and 1.1% or less, Ni: 3.0% or more and 6.0% or less, V: 1.0% or more and 2.2% or less, Nb: 0.1% or more and 0.5% or less, REM: 0.0005%) or more and 0.1% or less, Al: 0.003% or more and 0.05% or less, and the balance being Fe and inevitable impurities. The contents of C, Cr, V, Nb, REM, and Al satisfy the relationships Cr+0.2?C?(0.24×V+0.13×Nb)?3.0 and 0.01?REM/Al?3.2.

Abstract: A roll outer layer material contains small-size carbides having a circle equivalent diameter of 3 to 30 ?m in a number of 500 to 2500 pieces/mm2 and large-size carbides having a circle equivalent diameter of 50 ?m or more in a number of 20 pieces/mm2 or less, preferably having a chemical composition containing, by mass %, C: 2.4% or more and 2.9% or less, Si: 0.2% or more and 1.0% or less, Mn: 0.2% or more and 1.0% or less, Cr: 4.0% or more and 7.5% or less, Mo: 4.0% or more and 6.5% or less, V: 5.3% or more and 7.0% or less, Nb: 0.5% or more and 3.0% or less, and the balance being Fe and inevitable impurities, in which the contents of Cr, Mo, and V satisfy the relationship 1.5?(Cr+Mo)/V?2.4.

Abstract: A tool for a piercing mill, the tool comprising a scale layer in a surface layer of a substrate steel, wherein the scale layer includes a net structure scale layer that is formed on a substrate steel side, has a thickness of 10 to 200 ?m in a depth direction, and is complicatedly intertwined with a metal; and wherein a microstructure on the substrate steel side in a range of at least 300 ?m in the depth direction from an interface between the net structure scale layer and the substrate steel contains a ferrite phase at an area fraction of 50% or more, the ferrite phase containing 400/mm2 or more ferrite grains having a maximum length of 1 to 60 ?m.

Abstract: A magnetic sensor device may include an exciting coil; a detection coil which faces the exciting coil and is structured to detect an AC magnetic field generated by the exciting coil; an object arrangement space which is provided between the detection coil and the exciting coil; and a case member which covers an entire surrounding area for the detection coil and the exciting coil except a side facing the exciting coil in a surrounding area for the detection coil and except a side facing the detection coil in a surrounding area for the exciting coil. The case member may be made of nonmagnetic conductive metal.

Abstract: A surface layer material of a hot rolling mill roll is provided. The surface layer has a chemical composition containing, by mass %, C: 2.4% or more and 3.5% or less, Si: 1.2% or more and 2.4% or less, Mn: 0.2% or more and 2.0% or less, Cr: 0.8% or more and 2.1% or less, Mo: 0.3% or more and 1.1% or less, Ni: 3.0% or more and 6.0% or less, V: 1.0% or more and 2.2% or less, Nb: 0.1% or more and 0.5% or less, REM: 0.0005%) or more and 0.1% or less, Al: 0.003% or more and 0.05% or less, and the balance being Fe and inevitable impurities. The contents of C, Cr, V, Nb, REM, and Al satisfy the relationships Cr+0.2?C?(0.24×V+0.13×Nb)?3.0 and 0.01?REM/A1?3.2.

Abstract: A tool for a piercing mill with excellent wear resistance and a method for producing the tool for a piercing mill are provided. A scale layer is formed in a surface layer of a substrate steel having a composition containing, on a mass % basis, C: 0.05% to 0.5%, Si: 0.1% to 1.5%, Mn: 0.1% to 1.5%, Cr: 0.1% to 1.5%, Mo: 0.6% to 3.5%, W: 0.5% to 3.5%, and Nb: 0.1% to 1.0% and further containing Co: 0.5% to 3.5% and Ni: 0.5% to 4.0% so as to satisfy 1.0<Ni+Co<4.0. The scale layer includes a net structure scale layer that is formed on a substrate steel side, has a thickness of 10 to 200 ?m in a depth direction, and is complicatedly intertwined with a metal. A microstructure on the substrate steel side in a range of at least 300 ?m in the depth direction from an interface between the net structure scale layer and the substrate steel contains a ferrite phase at an area fraction of 50% or more, the ferrite phase containing 400/mm2 or more of ferrite grains having a maximum length of 1 to 60 ?m.

Abstract: There is provided a roll surface layer material including a roll surface layer with excellent fatigue resistance. The roll surface layer material has a composition including, on a mass % basis, C: 2.3% to 2.9%, Si: 0.2% to 0.8%, Mn: 0.2% to 1.0%, Cr: 5.0% to 7.5%, Mo: 4.4% to 6.5%, V: 5.3% to 7.0%, Nb: 0.6% to 1.5%, and Co: 0.1% to 4.0% so as to satisfy 14.0?(Mo+1.7V)?17.0 (where Mo represents a content (mass %) of Mo and V represents a content (mass %) of V) and further including Al: 0.001% to 0.03% and/or REM: 0.001% to 0.03%, wherein a carbide is contained at an area fraction of 13% to 40%. A composite roll obtained by integrally welding a shaft member to the roll surface layer member is treated as a centrifugal cast roll that includes a surface layer with excellent fatigue resistance.

Abstract: Vanity mirrors are provided with a body base member having a mirror, and an illumination member detachably mounted to the body base member. The illumination member includes a lens plate and an elongate lamp tube having one and another terminal ends between which electrical current may pass to illuminate the lamp, and thus the mirror. The illumination member is provided with a planar base plate having a pair of spaced-apart base contact terminals adapted to being connected to lamp circuit leads through which electrical current may be supplied to the lamp tube. The lamp tube is positioned on an upper side of the base plate and has one terminal end thereof soldered to one of the base contact terminals. A contact piece is positioned on the upper side of the base plate and has an end thereof soldered to the other terminal end of the lamp member.

Abstract: A cold-rolled steel sheet having an ultrafine grain structure including a ferrite phase is provided. The cold-rolled steel sheet contains C, Si, Mn, Ni, Ti, Nb, Al, P, S, N and Fe and incidental impurities. The ferrite phase has a content of 65 percent by volume or more and an average grain size of 3.5 &mgr;m or less.

Abstract: A cold-rolled steel sheet having an ultrafine grain structure including a ferrite phase provided. The cold-rolled steel sheet contains C, Si, Mn, Ni, Ti, Nb, Al, P, S, N and Fe and incidental impurities. The ferrite phase has a content of 65 percent by volume or more and an average grain size of 3.5 &mgr;m or less.

Abstract: A vanity mirror comprising a body base having a mirror attached thereto; a cover plate openably attached to said body base through a hinge mechanism; a switch turned on and off though opening and closing of said cover plate; and an illumination unit composed of a lamp connected to lead wires and a lens plate adapted to be attached and detached to said base plate; said illumination unit detachably attached to body base body base.