摘要:
A thrust needle roller bearing has a washer formed of a thin steel plate and needle rollers, at least said washer has a nitrogen enriched layer at a surface layer portion, amount of retained austenite in said surface layer portion is at least 5 volume % and at most 25 volume %, and austenite grain number of said surface layer portion is 11 or higher. Thus, a long life thrust needle roller bearing resistant to an early failure caused by surface damage such as surface-originated flaking and also resistant to common, load dependent rolling contact fatigue can be provided.
摘要:
When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, the mobile station uses the same branch structure and the same communication frequency band for all of calls. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, a branch structure and a communication frequency band, which can continue all of the calls, are selected and used. Therefore, the mobile communications system is suitable for transmission of various sorts of data in accordance with the development of multimedia.
摘要:
To further reduce the manufacturing cost of a shell type needle roller bearing, and to ensure high quality of the shell type outer ring by subjecting the outer ring to a heat treatment that needs no adjustment of the atmosphere.The steel sheet to be formed into the shell type outer ring 1 by pressing is made of a medium to high carbon steel containing carbon by not less than 0.3 mass percent. With this arrangement, the material cost and thus the manufacturing cost are lower than when using a conventional low-carbon structural alloy steel sheet or a steel sheet for cold rolling and pressing. Also, it is possible to ensure high quality of the outer ring by subjecting the outer ring to simple heat treatment without the need for carburizing or carbonitriding, which needs adjustment of the atmosphere.
摘要:
A thrust needle roller bearing has a washer formed of a thin steel plate and needle rollers, at least said washer has a nitrogen enriched layer at a surface layer portion, amount of retained austenite in said surface layer portion is at least 5 volume % and at most 25 volume %, and austenite grain number of said surface layer portion is 11 or higher. Thus, a long life thrust needle roller bearing resistant to an early failure caused by surface damage such as surface-originated flaking and also resistant to common, load dependent rolling contact fatigue can be provided.
摘要:
A negative-working CTP plate which is superior in resolution and printing resistance of the image area of a press plate is provided, which is obtained by forming a latent image on a heat-sensitive layer in a heat-sensitive lithographic printing plate comprising a substrate having a hydrophilic surface and a heat-sensitive layer made of an alkali-soluble polymer formed on the surface of the substrate, using heat generated upon irradiation with laser light, and developing the heat-sensitive layer using an alkaline developing solution. In the heat-sensitive lithographic printing plate comprising a substrate having a hydrophilic surface, and a heat-sensitive layer made of an alkali-soluble polymer formed on the surface of the substrate, an advancing contact angle (θf1) of the surface of the heat-sensitive layer with water at 25° C. is within a range from 70° to 110°, a receding contact angle (θb2) of the surface of the heat-sensitive layer with water at 25° C. after heating at 150° C. for 3 minutes is larger than a receding contact angle (θb1) of the surface of the heat-sensitive layer with water at 25° C. before heating, and a difference in receding contact angle before and after heating, (θb2−θb1), is larger than 1° and is smaller than 40°.
摘要:
A rolling bearing comprises a roller (4), a roller shaft (2) provided inwardly of the roller (4), and rolling elements (3) provided between the roller (4) and the roller shaft (2), the roller shaft (2) having a nitrogen-rich layer and is arranged at its race surface, on which the rolling elements (3) run, not smaller than 11 in the JIS austenite grain size number and not smaller than HV653 in the Vickers hardness number, at both ends not greater than HV300, and at its core beneath a widthwise midpoint of the race surface not smaller than HV550.
摘要:
In a mounting structure for a relay arranged on a printed circuit board, a resin block having at least one insert-molded bus bar is fixed on the printed circuit board. One end of the bus bar held by the resin block is joined together with a terminal of the relay by welding, while the other end of the bus bar is soldered to a printed wiring pattern formed on the printed circuit board. Therefore, a heat (temperature) of the terminal of the relay can be absorbed through the bus bar and the resin block.
摘要:
A method of manufacturing liquid-crystal elements having two substrates on the surface of which a electrode group formed of stripe-shaped transparent electrodes and a metallic wiring pattern, and a liquid-crystal layer sandwiched between the two substrates, the method including the step of: repairing residue defects of the lower layer first and next residue defects of the upper layer by using etching solutions for selectively etching the transparent electrode or the metallic wiring pattern when etching residue defects between the stripe patterns of the transparent electrode and the metallic wiring are repaired.
摘要:
An optical modulation element which enables substantially total transmission of incident light and provides a high contrast when it as used as a display element, thereby enabling multiplex driving.
摘要:
A thrust bearing component is formed of cold-reduced steel sheets and strip having surface roughness of Rmax≦2 μm and provided by cold rolling a high-carbon steel containing 0.9 wt % to 1.2 wt % of carbon, 1.2 wt % to 1.7 wt % of chrome, 0.1 wt % to 0.5 wt % of manganese, and 0.15 wt % to 0.35 wt % of silicon.