摘要:
A method of continuous compression forging, with a compression forging anvil, the final solidified region of cast steel drawn out from a mold for continuously casting, comprising the step of: compressing said cast steel with said anvil at a compressing cycle which meets the following conditions: ##EQU1## where t: the compressing cycle (sec), .delta.: the overall thickness reduction, Vc: the casting speed (mm), D: the cast steel thickness before compression forging, .theta.: the inclination angle (.degree.) with respect to the flat surface of the anvil.An apparatus for continuous compression forging continuously cast steel comprising: at least a pair of anvils for vertically holding the pass line of cast steel drawn out from a mold for continuous casting and continuously compression-forging the final solidified region of the moving cast steel by moving the anvils toward and away from each other; a frame; a slider; and links, wherein either of said anvils is disposed within said frame which has a port through which said cast steel is introduced, another anvil is secured to said slider which can be reciprocated along a sliding surface formed in said frame, and said frame and said slider are hung from a crank shaft via said links, said crank shaft acting to move said anvils toward and away from each other.
摘要:
A drive signal generator includes: a first storage part which stores data related to a primary processing signal acquired by subjecting a linearly changing saw-tooth signal to the low-pass filter processing; a parameter decision part which decides a parameter for the notch filter processing; a filter part which generates a secondary processing signal by subjecting the primary processing signal read from the first storage unit to the notch filter processing using the decided parameter decided by the parameter decision part; a second storage part which stores data related to the secondary processing signal generated by the filter unit; and a drive signal generation part which reads the data related to the secondary processing signal with a clock having a predetermined frequency and generates the drive signal by subjecting the data related to the secondary processing signal to analog conversion.
摘要:
A differential type MOS transmission circuit includes a signal driving circuit and a signal receiving circuit to realize high speed transmission for a short distance transmission between different LSIs, etc. A pair of transmission lines between the signal driving circuit and the signal receiving circuit are driven by a pair of drivers in the signal driving circuit so as to take either one of three states, i.e. one state where both of the lines are in a precharged states and two states where either one of the lines is in a discharged state. A signal driving circuit includes signal generating circuits generating variations in control signals varying pulse-like in response to rise and fall of an input signal to thereby obtain the discharge state. The signal receiving circuit generates an output signal depending on the state of the transmission lines and is constructed of a Schmitt trigger circuit with a hysteresis characteristic, for which an input threshold voltage for output logical values has a level smaller than a potential difference between the precharged level and the discharged level.
摘要:
A signal receiving circuit comprising a first P-channel MOSFET amplifier and a first N-channel MOSFET amplifier having gates supplied with positive signals from a pair of signal transmission lines; and a second P-channel MOSFET amplifier and a second N-channel MOSFET amplifier having gates supplied with negative signals from said pair of signal transmission lines; wherein a first output signal is formed by so adjusting the gains of the first P-channel MOSFET amplifier and of the second N-channel MOSFET amplifier that the resultant signals have an intermediate amplitude between the operation voltages, and a second output signal is formed by so adjusting the gains of the second P-channel MOSFET amplifier and of the first N-channel MOSFET amplifier that the resultant signals have an intermediate amplitude between the operation voltages. This makes it possible to receive various small signals lying over a wide range even by using a sense amplifier which has only a fixed operation range in the signal receiving circuit as well as to constitute a novel and optimum system by combining semiconductor integrated circuit devices having different low-amplitude interfaces.
摘要:
There is disclosed a process for producing purified xanthan gum, which comprises (i) adding a hydrophilic organic solvent to an aqueous solution containing crude xanthan gum with pH 0.5 to 2.5, and (ii) neutralizing the mixture with a base to precipitate the xanthan gum. The xanthan gum thus obtained has low contents of ash and remaining organic solvent, as well as a high quality with little impurities, and can advantageously be used in the fields of foods, cosmetics, medicaments and the like.
摘要:
Provided are a pellicle for lithography which can prevent a haze from being generated on a photomask even if a short wave length laser such as an ArF excimer laser is used for a long period of time, and a method for producing a pellicle film to be attached to the pellicle for lithography. The pellicle 1 for lithography is comprised of a frame-like pellicle frame 4 having one open frame on one side of the pellicle frame and another open frame on another side of the pellicle frame; and a laser beam transmissive pellicle film 2 for lithography, which is attached to the one side of the pellicle frame. The another open frame is capable of attaching to a photomask 10 and the pellicle film has a venting hole 7 having a hole size through which a gas molecule 15 can pass but not a foreign particle 16.
摘要:
The invention provides a method for surface-finishing of a single crystal wafer of a ferroelectric material into a substrate plate suitable for use, for example, as a SAW filter element which is mirror-polished only on one of the surfaces, the other surface having an adequate roughness. Different from conventional methods, the inventive method comprises the successive steps of (a) slicing a single crystal boule into wafers, (b) lapping of the wafer on both surfaces to impart adequate roughness to the surfaces, (c) chemically etching the thus lapped surfaces to remove the strain produced in the preceding mechanical working, and (d) mirror-polishing one of the thus etched surfaces so that high uniformity of the thickness and greatly decreased warping of the wafer can be ensured.
摘要:
A pair of shifting supports for supporting a shiftable shear housing in a flying shear machine for cutting traveling stock comprises a parallel crank mechanism which, together with a crank mechanism of a pair of shearing drives, is incorporated in a motive power transmission mechanism provided on a base and driven, together with a pair of shifting drives, by a common driving power source, the cranks of the parallel crank mechanism rotating one or two revolutions per revolution of a main shaft for shifting drive of the pair of shifting drives, a movement approximating a straight-line motion along the travel direction of the stock being imparted to the shiftable shear housing in at least a shearing interval of the forward stroke of the reciprocating movement thereof caused by the pair of shifting drives.
摘要:
The upper and lower shear drums of flying shears having respective shear blades are driven continuously by one motor at a tangential speed synchronized to the translational speed of a stock strip traveling therebetween, and the upper drum is moved between an upper non-shearing position and a lower position for cooperative shearing of the strip with the lower drum by an upper drum displacing mechanism driven by another motor controlled to undergo operational cycles each starting from full stop and ending at full stop during an integral number of revolutions of rotation of either of the drums.