摘要:
An edging mill for section rolling has a pair of horizontal rolls, each horizontal roll including a pair of axially spaced horizontal roll segments supported by driven horizontal roll shafts. Eccentric rings are disposed between the two horizontal roll segments making up each horizontal roll and are rotatably mounted on the horizontal roll shaft. The eccentric rings are eccentric to the horizontal rolls. Web-restraining ring rolls each comprise a pair of web-restraining roll segments rotatably fitted over the periphery of the eccentric rings concentrically thereto. A web-restraining ring roll positioning device rotates the eccentric rings. While the horizontal rolls roll the flange edges of the section, the web-restraining ring rolls hold the web of the section therebetween. The position of the web-restraining ring rolls with respect to the horizontal rolls changes with the rotating angle of the eccentric rings. The position of the web-restraining ring rolls is adjusted according to the flange thickness of the section.
摘要:
A thin-webbed H-beam steel having a web thinner that flanges is produced by forcibly water cooling the outer surface of the flanges during an intermediate hot rolling prior to a final hot rolling by cooling to less than 700.degree. C., interrupting the cooling to return the temperature to greater than 700.degree. C., and repeating the cooling and interrupting in order to refine the microstructure of the surface of the flanges to a predetermined depth from the surface; final-hot rolling the intermediate-hot rolled H-beam steel; and forcibly water cooling the flanges of the final-hot rolled H-beam steel in a manner such that the web does not wave during this forcible water cooling, and such that upon completion of the forcible water cooling, thermal stress, generated in the web during air cooling to room temperature, does not exceed the buckling strength of the web.
摘要:
An apparatus for cooling thin-webbed H-beam steel includes means for forcibly spray cooling the flanges of the H-beam in intermediate and final hot rolling zones. The cooling is based upon tracking information with respect to predetermined positions along the length of the H-beam. A plurality of flow quantity control blocks are disposed in parallel with each having a three way valve having a water supply side port, a nozzle side port, and a water drain port. A plurality of on-off valves connect the nozzle side port to nozzles in a nozzle group to select nozzles based upon the flange width of the H-beam. A variable throttle mechanism maintains pressure loss at the water drain side equal to pressure loss at the nozzle side. Switching of the three way valve of one flow quantity control block can be carried out without affecting other flow quantity control blocks.
摘要:
A phase difference detecting device includes a splitter for splitting laser beams into a first group which will travel along a first path and a second group which will travel along a second path, a beam selection/extraction unit for selecting, as reference light, one beam from the first group to allow it to pass therethrough, a path length changing unit for changing the length of the first path, a combining unit for combining the reference light and beams which construct the second group to produce interference light, and a detector for detecting the intensity of the interference light. The device changes the length of the first path using the path length changing unit to detect a path length which maximizes the intensity of the interference light for each of the beams which construct the second group, and determines a phase difference among the beams from the detected path length.
摘要:
The present invention provides a conductive polymer in which, when being formed into a coating film, foreign materials are difficult to be generated even the passage of time and a quality control method for a conductive polymer and has a repeating unit which is represented by the following general formula (1). The present invention also provides a quality control method for conductive polymers wherein conductive polymers with an area ratio (Y/X) of 0.60 or less are selected. In the formula R1 to R4 are each independently —H, a linear or branched alkyl group having 1 to 24 carbon atoms, a linear or branched alkoxy group having 1 to 24 carbon atoms, an acidic group, a hydroxyl group, a nitro group, —F, —Cl, —Br or —I; and at least one of R1 to R4 is an acidic group or a salt thereof.[Chemical Formula 1]
摘要:
A roll for a rolling mill capable of an on-line control of the width thereof. The roll includes a drive roll connected to a mill motor and a hollow driven roll driven by the drive roll while being axially slidable with respect to the drive roll. A screw shaft is screwed to the inside of the hollow driven roll in such a manner that an end-to-end contact of the driven roll with the drive roll is obtained. A clutch is provided for a selective locking of the screw shaft, which is unlocked during a normal rolling process, so that the screw shaft is rotated together with the drive roll and the driven roll by a rotation of the mill motor. When adjusting the roll width, the clutch is operated so that the screw shaft is locked, and as a result, a rotation of the mill motor causes a mutual axial movement of the drive roll and driven roll to thus adjust the roll width. A means is also provided for a centering of the roll at the pass line of the material, after the adjustment of the roll width.
摘要:
A subject is imaged for treatment of the subject such as an eye to be inspected, while irradiating a charged particle beam on the eye, so that an aim position of a charged particle beam for treatment can be determined.The device for determining an aim position of a charged particle beam includes a range adjuster 14 that adjusts an irradiation position, in a depth direction of the eye, of a charged particle beam irradiated from a charged particle beam source, a mirror 18 that transmits or passes the position determining charged particle beam and reflects an emitted light emitted from a region of the eye on which the charged particle beam is irradiated and an emitted light emitted, due to an irradiated of an excitation light, from a region including the region of the eye on which the position determining charged particle beam, toward the outside of the axis of the charged particle beam, and an eyeground imaging device 24 that is arranged at a position where the emitted lights reflected from the mirror are incident and images the region including the region of the eye on which the charged particle beam is irradiated by causing the emitted lights to be incident, so that it allows to determine an aim position of a charged particle beam for treatment based on a imaged image.
摘要:
A grating alignment device performs alignment of two or more plane gratings so as to eliminate an angular misalignment and a phase misalignment which are caused between respective diffracted light beams generated when incident light is diffracted by the plane gratings. Specifically, alignment is performed by appropriately adjusting an angle A, an angle B, an angle C, a coordinate Z, and a coordinate X of the second plane grating so as to eliminate at least one of the angular misalignment and the phase misalignment which are caused between the respective diffracted light beams generated when incident light is diffracted by the first plane grating and the second plane grating.
摘要:
Provided are a small-sized, low-cost, and easy-to-use laser optical path length difference detecting device, a laser optical path length difference detecting device, and a coherent optical coupling device. The laser optical path length difference detecting device detects an optical path length difference between propagation paths of a first laser beam (1) and a second laser beam (2), which are mutually coherent when the beams are propagated through two arbitrary optical paths of a plurality of laser beam optical paths. The laser optical path length difference detecting device is provided with an optical path length difference variable means (4) for changing the optical path length difference between the first laser beam (1) and the second laser beam (2), a wavefront inclination generating means (5) for inclining a wavefront of at least one of the first laser beam (1) and the second laser beam (2), and a two-dimensional detector (6) for detecting the interference light intensity distribution of the first laser beam (1) and the second laser beam (2) which have passed through the wavefront inclination generating means.
摘要:
Tilting motion of an auxiliary mirror and a dynamically compensating balancer is separated into a component in which they tiltably move with the same phase and a component in which they tiltably move with opposite phases. As these components are processed by using respective stabilizing filters, the auxiliary mirror and the dynamically compensating balancer are allowed to tiltably move with opposite phases.