Abstract: Provided is a method comprising: back grinding a back side or a semiconductor wafer W having a protective tape applied on the surface thereof leaving annularly an outer peripheral part un-ground; separating the protective tape from a surface of the semiconductor wafer W having an annular projected part formed in the outer peripheral part of the back side; applying a holding tape over the surface of the semiconductor wafer W from which the protective tape having been separated and a surface of a ring frame f; removing and separating the outer peripheral part in the semiconductor wafer applied and held on the holding tape, by annularly cutting; applying a dicing tape over the back side of the semiconductor wafer having been made flat and the back side of the ring frame; and separating the holding tape from the ring frame and the semiconductor wafer.

Abstract: Provided is a method comprising: back grinding a back side of a semiconductor wafer W having a protective tape applied on the surface thereof leaving annularly an outer peripheral part un-ground; separating the protective tape from a surface of the semiconductor wafer W having an annular projected part formed in the outer peripheral part of the back side; applying a holding tape over the surface of the semiconductor wafer W from which the protective tape having been separated and a surface of a ring frame f; removing and separating the outer peripheral part in the semiconductor wafer applied and held on the holding tape, by annularly cutting; applying a dicing tape over the back side of the semiconductor wafer having been made flat and the back side of the ring frame; and separating the holding tape from the ring frame and the semiconductor wafer.

Abstract: Work rolls opposed to each other have shafts rotatably supported by upper and lower work roll chocks of a housing, a screw down device for applying a predetermined pressure to the upper work roll is provided in an upper portion of the housing, screw mechanisms capable of thrusting the work roll chocks in a horizontal direction are provided on an entry side or a delivery side of the housing, hydraulic cylinder mechanisms capable of thrusting the work roll chocks in the horizontal direction are provided on the other side, and contraction portions are provided in hydraulic supply and discharge pipes of the hydraulic cylinder mechanisms.

Abstract: A continuous hot rolling mill with a metal block conveying apparatus and a metal block joining apparatus which moves with the metal blocks along the metal block conveying apparatus to conform a joining operation. The metal block conveying apparatus uses rollers supported by cylinders with a common hydraulic circuit which allows the cylinders to follow guide rails on the metal block joining apparatus and lower out of the path of the metal block joining apparatus and then return to a metal block support position after the metal block joining apparatus' passage without individual control circuits and valves for each of the cylinders.

Abstract: A band steel plate winding apparatus comprises a winding drum for winding a band steel plate; unit rolls, and curved surface guides adjacent to the unit rolls, provided along a circumferential surface of the winding drum forwardly and backwardly movably between a winding drum surrounding position and a retreat position, the position of the unit roll relative to the winding drum at the time of entry of the band steel plate being downstream at an angle of about 15 degrees or less from the position of contact between the winding drum and the band steel plate; and ejection nozzles provided in a guide surface of each of the curved surface guides for ejecting a gaseous or liquid fluid at a high speed toward the band steel plate before the band steel plate collides with the curved surface guide. The band steel plate winding apparatus permits high speed winding of a band steel plate while effectively preventing buckling of a front end of the band steel plate, and can avoid a great increase in equipment cost.

Abstract: The invention comprises a continuous hot rolling method in which a rear end portion of a preceding metal block and a fore end portion of a succeeding metal block are cut and the metal blocks are joined to each other by heating and pressing followed by a finish rolling. A region of each metal block is restrained from a clamping position to the end portion thereof in order to prevent a change in level of the metal blocks in heating and pressing the piece. The end portions of the metal blocks can be thus prevented from deformation.

Abstract: According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.

Abstract: A method and apparatus for joining metal pieces wherein the rear end of a preceding metal piece and a front end of a metal piece are heated and then pressed together prior to hot finished rolling. The temperature the ends of the metal pieces are heated to is a temperature range between the solidus and liquidus line temperatures of the metal(s) to be joined.

Abstract: According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.

Abstract: Method and apparatus for joining metal pieces using induction heating. Metal pieces to be joined are placed end-to-end with a gap between them and induction heated in the thickness portion. To maximize speed and even heating edge-to-edge of the ends, members of a magnetic substance are provided in a gap between the inductor and the piece to be heated, thereby enhancing local heating effect by increasing magnetic flux density. Once heated, the ends are pressed together end-to-end for joining.

Abstract: An apparatus for joining metal pieces using induction heating. Preceding and succeeding metal pieces are followed by a carriage which carries an inductor. The inductor has the ability to move in the longitudinal direction of the metal pieces relative to the carriage to allow the inductor to move more or less upon the preceding or succeeding metal pieces to increase or decrease the induction heating effect, thereby taking into account any thickness variation of the metal pieces and yet still heating them evenly with regard to each other, prior to their being pressed against each other for joining before hot finishing rolling.

Abstract: A sheet bar joining apparatus comprises a heater provided between a delivery-side clamp for clamping a rear end of a preceding sheet bar and an entry-side clamp for clamping a front end of a succeeding sheet bar; upper and lower anti-buckling plates provided on the entry-side clamp and located above and below the sheet bars; upper comb tooth portions and lower comb tooth portions formed in the upper and lower anti-buckling plates, respectively; a heat resistant insulator provided at a surface of each comb tooth portion opposed to the sheet bars; and a plurality of groove portions provided near the surface of each comb tooth portion opposed to the sheet bars.

Abstract: A housingless rolling mill having an upper and lower work roll, upper bearing blocks and lower bearing blocks for supporting the upper and lower work rolls, and screw-down cylinders for pulling the upper and lower bearing blocks vertically toward each other. The screw-down cylinder is tiltable with the use of upper and lower spherical. Legs of the lower bearing block are turnable in a roll cross direction. Lower cross cylinders are provided at the lower bearing block, and upper cross cylinders are provided at the upper bearing block to enable the work rolls to cross at an angle .theta.. Thus, a strip material is rolled to a satisfactory shape and thickness with the upper work roll and the lower work roll crossing each other.

Abstract: According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces to perform heating. Another alternating magnetic field whose direction is reverse with respect to that of the former alternating magnetic field is partially generated in the end region on the opposed faces of the metal pieces and in either a region where the metal pieces exist or a region outside width ends of the metal pieces. This assures a uniform heating of the end region on the opposed faces of the metal pieces over their full width to reliably join the both metal pieces to each other.

Abstract: A hot rolling line is constructed by a pair or a plurality of pairs of rolling rolls disposed opposingly on an upper side and on a lower side of a workpiece (1) to be rolled that is pinched in between the rollers. A descaling apparatus (5) has jet flow nozzles disposed so that two jetted flows, being liquid, gas or plasma, are opposing flows so as to collide with the surface of a strip on the upstream side of the rolling rolls and then collide with each other. The jet flow nozzles are disposed, so as to incline in a direction to face each other so that the angle of inclination is 15.degree. to 60.degree. from the horizontal direction of the strip surface.

Abstract: The invention provides a method for improving the luster of a metal sheet surface without deteriorating the productivity and also in reducing the difference in glossiness between the upper and lower surfaces of the metal sheet at the time of cold-rolling. By making the velocity, after rolling of the metal sheet, equal to or larger than the rotational circumferential velocity of the work rolls, and by rolling the metal sheet with upper and lower work rolls crossed with each other in such manner that an angle of slip scratches left on the metal sheet surfaces becomes 5 degrees or larger and shear deformation in the widthwise direction can be effectively given to the metal sheet just before rolling, thereby improving the surface luster of the metal sheet.

Abstract: A management system automatically manages order and sales operations by facsimile communication between an orderer and a supplier. The management method of this system comprises checking the steps of the kind and number of commodities written on an order sheet which is sent from the orderer by facsimile, checking the stock of such commodities, sending an order content check request sheet to the orderer by facsimile in order to have the orderer check the contents of the order, collecting the ordered commodities based on an order content confirmation sheet sent from the orderer by facsimile, managing the remaining stock of the commodities, and performing accounting operations for the ordered commodities.

Abstract: In a system for detecting and warning an illegally parked vehicle a television (TV) camera images a prescribed roadside zone where parking is prohibited at a prescribed time interval. A produced still TV image is stored, and a TV image of a prescribed pattern painted on the roadside without any vehicle is stored as a reference image. The still image is compared with the reference image thereby to produce an image which carries information indicative of the presence of a vehicle in the zone and the vehicle presence information image is stored. The move-off of the vehicle is detected by comparing images of the vehicle presence information storage at a prescribed time interval. The vehicle is warned of illegal parking upon detecting that the vehicle does not move off before expiration of a prescribed time.

Abstract: An automatic facsimile-receiving-sheet recognizing apparatus including: a device for automatically receiving facsimile information transmitted from an orderer; a device for detecting the position of a bar code, a mark sheet and a figure in a received sheet and automatically cutting their images; and a device for automatically recognizing the cut bar code, the mark sheet and the figure and transmitting the result of the recognition to a store controller of an automatic order receiving and sales control system.

Abstract: In a continuous rolling line wherein the tail end part of a preceding rolled plate and the head end part of a following rolled plate are joined subsequently to a rough rolling and subjected to a following continuous finish rolling: a joining method of rolled plates wherein the tail end of the preceding rolled plate and the head end of the following rolled plate are formed into a nearly rectangular convex and concave shape respectively so as to inlay each other, the convex part and the concave part being combined each other in the same plane as the rolling lines, and then being fed to the continuous finish rolling; a joining method rolled plates wherein the side surface of the parallel inlay is formed in a taper shape in the direction of the plate thickness at any desired location of either the tail end part of the preceding rolled plate or the head end part of the backward rolled plate or of the both parts, and then being fed to the continuous finish rolling; and a joining method of rolled plates wherein the