摘要:
A network statistics information service system comprised of a service provider system having a database for storing statistics data and statistics information collection conditions for each user and an access server for receiving, upon the authentication of a user terminal, a response packet indicative of the result of authentication, a request source user ID, the statistics information collection conditions, and statistics parameters from the service provider system, wherein the access server collects statistics information for each user according to the statistics information collection conditions and the statistics parameters indicated by the response packet while the user terminal is connected to the Internet, and notifies the service provider system of updated statistics data, and the service provider system updates the database based on the data received from the access server and discloses at least a part of the statistics data accumulated in the database in response to a request from the user terminal.
摘要:
The present invention provides a rolling bearing in which an oxide layer of an iron/chromium oxide series is formed at a thickness of from 1 to 1000 nm to at least one of raceway surfaces of bearing rings or rolling contact surfaces of rolling elements and a manufacturing method thereof. The oxide layer can inhibit hydrogen formed by decomposition of water incorporated in the lubricants from intruding into the matrix of the bearing members, thereby preventing early peeling for the raceway surfaces of the bearing rings or the rolling contact surfaces of the rolling elements and, thus, greatly improving the rolling life. The oxide layer can be formed simply by merely tempering the bearing member and then applying a re-heating treatment in air at a temperature lower than the tempering temperature.
摘要:
An outer ring 2 as a stationary ring is fabricated with a steel material having the composition as shown under. The steel material contains, as alloying elements, C 0.80 to 1.10 wt %, Si 0.20 to 0.50 wt %, Mn 0.2 to 1.0 wt %. It also contains any two kinds or more of Cr, Mo and V at rates of Cr: 1.2 to 3.5 wt %, Mo: 0.5 to 1.5 wt % and V: 0.2 to 1.0 wt %. The containing rates of Cr, Mo and V satisfy the under mentioned formula (1). It further contains Ti and/or Cu at rates of Ti: 0.05 to 0.20 wt % and Cu: 0.2 to 2.0 wt % 1.8≦[Cr]×0.6+[Mo]×0.5+[V]≦3.0 (1). Accordingly, it is possible to remarkably lengthen the life of a rolling bearing such as a bearing for alternator to be used under high vibration and high load.
摘要:
At least any one of a bearing member (inner race, outer race and rolling element) is formed with a steel material containing 0.2 to 1.2 wt % of C, 0.7 to 1.5 wt % of Si, 0.5 to 1.5 wt % of Mo, 0.5 to 2.0 wt % of Cr, and 12 ppm or less of O. The bearing member is treated with carbonitriding, and thereafter, quenching and tempering so as to provide carbon concentration in the steel surface being 0.8 to 1.3 wt % and nitrogen concentration on the same being 0.2 to 0.8 wt %.
摘要:
An inner ring 3 of the rolling bearing is formed by a steel material having the following composition. This steel material contains as alloying constituents C, Si, Mn and Cr in an amount of from 0.65 to 1.20% by weight, from 0.10 to 0.70% by weight, from 0.20 to 1.20% by weight and from 0.20 to 1.80% by weight, respectively, and has an oxygen content of not more than 16 ppm. The content of retained austenite left after heat treatment is from 0 to 6% by volume and the surface hardness HRC of the bearing surface is from not less than 57 to not more than 65. Accordingly, it is possible to drastically prolong the lifetime of a rolling bearing operating under high vibration and load such as bearing for alternator.
摘要:
The difference signal indicating a difference between the output of the horizontal deflection circuit unit and a desired horizontal raster signal is converted into a digital signal corresponding to the difference signal by the A/D converter. The converted digital signal is outputted to the digital signal processor. The digital signal processor performs a feedback control of raster width by digital operations. The digital signal processor outputs the result signal of the operation to the D/A converter where the result signal is converted into an analog result signal. The analog signal is sent to the horizontal deflection circuit unit where the power to be supplied to the deflection yoke is controlled.
摘要:
A vertical deflection waveform generating apparatus is provided to have a memory in which a function of a vertical deflection waveform is previously stored. The function is a function with an order of horizontal scanning lines in which linearity of a raster is corrected as a parameter. The vertical deflection waveform generating apparatus generates a vertical deflection waveform by a digital signal processing circuit substituting a scanning order of the next scanning line in the parameter of the function, and sequentially outputting vertical deflection voltage at each time of detection of a horizontal synchronizing signal. Further, in order to reduce raster moire, timing for generating the vertical deflection waveform is offset for each frame.
摘要:
An object of this invention is to provide a rolling bearing in which, as for the rolling elements, it is unnecessary to employ a high level heat treatment such as carburizing or carbonitriding which requires a long period of time to achieve, and which is sufficiently long in service life even when used with a lubricant containing foreign matters. In a rolling bearing, the amount of residual austenite (.gamma..sub.R vol %) in the surface layer of at least one of the inner and outer races is in a range of 25 to 40 vol %, and the surface hardness (Hv) thereof meets the following condition:-4.7.times.(.gamma..sub.R vol %)+900.ltoreq.Hv.ltoreq.-4.7.times.(.gamma..sub.R vol %)+1000and the hardness of the rolling elements combined with the inner and outer races is higher by H.sub.R C 1 to 2 than that of the one of the inner and outer races.
摘要:
A rolling bearing long in service life in which the rolling contact surfaces of the rolling elements and the mating member thereof are prevented from peeling damage. In a rolling bearing used in boundary lubrication state, the surface roughnesses of the rolling contact surfaces of each of the rolling elements and the mating member thereof are in a range of from 0.15 to 0.5 .mu.mRa when represented by central line average roughness, and the ratio thereof is 3 or smaller, whereby the surface roughnesses can be obtained in combination which are most suitable for decreasing the probabilities of the surface damage being caused in the surface layers of the rolling contact surfaces of the mating member and each rolling element. Hence, stresses are locally set up in the surface layers of the rolling contact surfaces which are smaller than the allowable shearing stress, so that the rolling contact surfaces are prevented from the peeling damage.
摘要:
The invention discloses a method for dyeing a hydrophobic fiber, in particular, a polyester fiber in an extremely brilliant yellow or orange with fluorescence, a method for coloring, for example, a polystyrene resin or a polyacrylate resin in a brilliant yellow or orange, and a coloring material therefore.A method for dyeing a hydrophobic fiber and a method for coloring an organic macromolecular substance characterized by using a coumarin compound represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 independently represent each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;and a coloring material containing the coumarin compound are disclosed.