摘要:
Process and apparatus for drying a material web. The process includes guiding the material web to at least one heated area having a jacket surface of a cylinder having a diameter of between about 4-10 meters, setting the material web, having a dry content of between about 45-55%, onto the at least one heated area, maintaining the material web in uninterrupted contact with the at least one heated area at least until the material web achieves a firmness sufficient for detaching the material web from the heated area, and detaching the material web from the at least one heated area with a dry content of between about 55%-65%.
摘要:
A process for applying a dual-layer protective coating to steel suspension components of an automobile involves the steps of applying a first coat of the zinc-rich, epoxy-based coating powder to the components utilizing the conventional electrostatic application process; partially curing the layer of zinc-rich coating that has been applied to the steel components such that the zinc-rich coating is gelled; immersing the components with the first layer of gelled zinc-rich coating in a pre-heated/heated fluidized bed of thermoplastic powder so that a relative uniform layer of the thermoplastic coating powder is applied over the first coat of gelled zinc-rich coating; and finally curing the outer layer of thermoplastic powder coating and the inner layer of the zinc-rich coating.
摘要:
A drying cylinder for drying a fibrous web, the cylinder having an inner chamber connected to a pressurized air source; and an outer cylinder jacket having an air-permeable region which is adapted to contact the fibrous material web. Also a drying section for drying a fibrous web, including at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air-permeable region; a circulating belt arranged to press the fibrous web against the outer cylinder jacket and belt being arranged to partially wrap around the drying cylinder; and a pressurized air source connected to the inner chamber is described. Finally, a process for drying a fibrous web in an apparatus that includes at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air permeable region, the process including pressurizing the inner chamber of the drying cylinder with air; and guiding the fibrous material web partially around the drying cylinder with a circulating belt wherein the circulating belt presses the fibrous material web against the air permeable portion of the cylinder jacket is described.
摘要:
A process and device are disclosed to measure angular speeds. In order to determine the Sagnac phase from the output signal of a fiber optic annular interferometer, without the need for costly circuits for regulating a phase modulator that acts on the interference light and for regulating the intensity of the light, the Sagnac phase shift .phi. is deduced from the amplitudes (A.sub..nu.-1, A.sub..nu., A.sub..nu.+1) of three spectral lines of the interference light that is emitted by the interferometer.
摘要:
A headbox for a papermaking machine has an outlet channel having the width of the machine which is limited by a rigid channel wall and by a movable channel wall. The movable channel wall is part of a channel-wall support. Between the latter and a supporting member, there is a pressure cushion which counteracts the pressure prevailing in the outlet channel. A lift device is swingably mounted, at one end, on the rigid headbox housing and, on the other end, on the channel-wall support. In each of the two end walls of the channel-wall support, there is provided a spherical joint, the center point of which lies in a plane extending through the end point of the channel width. The lift device is coupled to the spherical joint by means of a C-shaped spindle head.
摘要:
On the cooling roll with outer roll shell 7 and inner, preforated roll shell 8 of an inner body 6, the inner body features endways and centrally at least one distributing component 22. Extending through this distributing component are channels 19 that are parallel with the roll axis, for one, and interposed radial channels 28 which, for one, serve the connection of an endwise space 14 that is located between an axial end of the inner body and the hollow roll end with one of the coaxial supply or drain channels of the journal 20 and, for another, serve the connection of the interior space 3 of the inner body 6 with one of the other coaxial supply and drain channels 25, 26 or vice versa.
摘要:
A two-beam spectrophotometer comprising a monochromator and a beam splitter is provided. In addition to being inclined to the optical axis by an angle .alpha./2 lying in the optical plane, the beam splitter is inclined to the direction perpendicular to the optical plane, so that the reference beam is deflected out of the optical plane by an angle .beta.. This improves the spectral intensity distribution.A spectrophotometric method employing this apparatus is also provided.
摘要:
The invention concerns a press roll having adjustable sag capability, principally for use in paper making machinery, or the like. The press roll includes a hollow, rotatable shell supported by a non-rotatable yoke and hydraulic support elements between the shell and the yoke transfer the press forces from the shell to the yoke. Each end region of the yoke is supported by a stationary support block. The connection between the yoke and the stationary support block is at a particular location. A mating roll cooperating with the press roll is supported by bearings longitudinally positioned approximately at the location of the connection between the support block and the yoke. An additional hydraulic supporting element is defined between the roll shell and the yoke and the longitudinal location of the yoke support piece and the mating roll bearing. The roll shell is supported on a stationary guide element with respect to which the roll shell rotates. The guide element permits the yoke to shift under the pressure, but prevents the yoke from rotating. The length of the roll shell is sufficient to extend into the region where it can be supported by the supporting element. The particular yoke support provided comprises a stationary support block and a tubular cantilever member that extends between the roll shell and the yoke. The yoke bears against the inside of the cantilever member while the roll shell bears against the outside. Packings are provided for sealing the roll shell on the support block. Finally, a planetary gear arrangement located inside the roll shell serves to drive the roll shell to rotate with respect to the yoke.
摘要:
The disclosure concerns a roller for use in pressure treatment of webs of material, or the like. The roller includes an annular roller shell and a beam support extending through the roller shell. The pressure on the roller shell is transmitted through a supporting element to the support within the shell. The supporting element includes a sleeve that is received in a recess in the support. The sleeve is connected with a source of pressurized liquid through a conduit in the support. The sleeve opens toward the shell. A spring normally urges the sleeve toward the shell. The sleeve is closed in the space between the support and the shell except where it opens toward the shell. The inner diameter of the section of the sleeve closer to the shell is approximately the same as the outer diameter of the sleeve more remote from the shell for improving the hydrodynamic force exerted by the "plug" of pressurized liquid inside the shell.
摘要:
A method and system for correlating slice profiles associated with a series of magnetic resonance images taken at a plurality of positions. The method comprises first positioning a patient in a first position in the imaging volume of the magnet. A scout scan is then acquired. Selection is then made of an anatomical landmark in the scout scan, which will be referred to as an anatomical fiducial. A particular slice, typically one of a stack of slices to be acquired in a subsequent scan, is selected and precisely positioned at the location of the anatomical fiducial in the scout scan. Following completion of the scan, the patient may be repositioned, necessitating a new scout scan to set up parameters for a second scan.