摘要:
A method of field welding head-hardened rails which includes the steps of gas pressure welding the rails, shearing off excess metal therefrom at the welded portion with a portable welder device, subjecting the railhead of the pressure welded portion of the rails to a subsequent heat treatment with a gas heater device, setting a width of the pressure welded portion to be heated at the time of the subsequent heat treatment with a pair of jigs, and cooling the portion which has undergone the subsequent heat treatment with an air blowing type cooler.
摘要:
A punching-shearing method for inspecting the quality of a butt welded joint comprises pressure butt welding steel members under heat to form an annular bulge around the joint portion of the steel members, punching-shearing the bulge under red heat immediately after the pressure butt welding process from one side of the bulge in parallel with the axes of the steel members by use of a shearing die having higher and lower shearing edge portions so that the higher shearing edge portions penetrate the bulge prior to the lower shearing edge portions, so as to cause the base of the bulge to remain around the joint portion in a slightly higher position than the peripheral surfaces of the steel members, and determining the quality of the joint portion from the peripheral surface of the base of the bulge remaining on the joint portion.
摘要:
A butt welding and burr shearing machine for metal rod, e.g., reinforce steel has opposed relatively slidable clamping devices (8, 9), which has positioning clamp (10) and pivotable clamp lever to clamp the rod by lever action. One of the clamping devices mounts split type shear dies by the positioning clamp and the clamp lever respectively. In the cutting position of the shear dies 21, 22 the rod F2 is not clamped by the clamping device 10 on which the shear dies are mounted.By a series of simple operations the rods to be jointed are loaded sideways, clamped by rotating clamp lever, and pressure butt welded, and bulge formed by welding process is sheared off. The completed rod is removed sideways.
摘要:
A gas pressure welding machine comprises a movable clamp means for clamping one of reinforcing rods to be joined together, a stationary clamp means for clamping the other reinforcing rod, a punching die for punching-shearing a bulge being formed around a joint portion of the reinforcing rods, and a key connection mechanism for detachably connecting the movable clamp means and the punching die, whereby the reinforcing rods are subjected to pressure butt welding to form a bulge around a joint portion thereof and the bulge is immediately punching-sheared under red heat by the punching die.
摘要:
An object of the present invention is to provide a method for producing a transfer body, which method neither causes adhesion failure at the interface between a transferring film and a substrate, nor causes interlayer peeling in the transferring film. Another object of the present invention is to provide a method for producing a transfer body with high productivity, which method neither causes breakage of a functional pattern forming a transferring layer during peeling of a release film from the transferring film, nor causes any damage to the substrate during separation of an attaching roller and a peeling roller from the substrate.
摘要:
A rubber member conveying device and a rubber member supplying system having the same are provided. The device and the system rapidly promote the shrinkage of the rubber member, thereby avoiding the length variation of the rubber member in the processing step for the rubber member. A rubber member supplying system 10 comprises a belt conveyor 14 which supplies a to-be-cut material 12 having an internal strain, a cutter 16 which cuts the to-be-cut material 12 supplied by the belt conveyor 14 to form a rubber member 20, and a rubber member conveying part 24 which conveys the rubber members 20. The rubber member conveying part 24 comprises an endless belt 26, and rollers 28 supported by supporting parts 30 that are provided at the endless belt 26. The rubber member 20 is conveyed on the rollers 28 while exposed to vibrations. Accordingly, the shrinkage in the rubber member 20 caused by the internal strain thereof is substantially completed in the conveying operation.
摘要:
In an apparatus capable of distilling and refining an easily polymerizable substance, piping is performed so that when a strainer in action is switched to a backup strainer, the strainer can be switched after removing air in the backup strainer to replace air in the backup strainer with a discharge liquid of a pump. According to the apparatus, switching the strainers installed on an upstream side of the pump for extracting a liquid of a vacuum distillation column, which distills and refines the easily polymerizable substance, can be performed with no trouble during operation of the distillation column. When the apparatus includes a device for measuring a differential pressure between an upstream side and a downstream side of the strainer in action, two or more strainers installed in parallel can be switched at proper times and the easily polymerizable substance can be produced efficiently.
摘要:
The present invention is to provide a polymerizable compound which can be a raw material for a resin having high transparency, good heat resistance and mechanical strength required for optical components such as plastic lenses and the like, while attaining a high refractive index (nd) exceeding 1.7, and an optical component composed of such a resin. Disclosed is a compound represented by the general formula (3), wherein, in the formula, M represents a metal atom; X1 and X2 each independently represent a sulfur atom or an oxygen atom; R1 represents a divalent organic group; m represents an integer of 0 or 1 or more; p represents an integer of from 1 to n; q represents an integer of from 1 to (n-p); n represents a valence of a metal atom M; Yq each independently represent an inorganic or organic residue; and when q is 2 or more, Yq may be bonded to one another for forming a ring structure with the intermediary of a metal atom M.
摘要翻译:本发明提供一种聚合性化合物,其可以成为具有高透明度,高耐热性和塑料透镜等的光学部件所需的机械强度的树脂的原料,同时获得高折射率(nd) 1.7,以及由这种树脂构成的光学部件。 公开了由通式(3)表示的化合物,其中在式中,M表示金属原子; X 1和X 2各自独立地表示硫原子或氧原子; R 1表示二价有机基团; m表示0或1以上的整数, p表示1〜n的整数, q表示1〜(n-p)的整数。 n表示金属原子M的化合价; Yq各自独立地表示无机或有机残基; 当q为2以上时,可以将Yq彼此结合形成具有金属原子M的中间环状结构。
摘要:
An image forming apparatus includes a fixing unit having a heat source, a temperature detecting unit for detecting a temperature of the fixing unit, an initial operation necessity detecting unit for determining whether an initial operation should be performed in the image forming apparatus, an initial operation selecting control unit for selecting an initial operation from among a plurality of predetermined initial operations based on the temperature detected by the temperature detecting unit when the initial operation necessity detecting unit detects that the initial operation should be performed, and a control unit for controlling the fixing unit so that the fixing unit performs the initial operation selected by the initial operation selecting control unit. Furthermore, a temperature control apparatus includes a determination unit for determining, based on the detected temperature of the body, whether the temperature of the body should be increased or decreased, a temperature increasing control unit for applying an AC voltage from the AC power supply to the heater so that the temperature of the body is increased when the determination unit determines that the temperature of the body should be increased, and a temperature decreasing control unit for applying to the heater a pulse-shaped AC voltage which is repeatedly turned on and off at a frequency so that the temperature of the body is decreased when the determination unit determined that the temperature of the body should be decreased, the frequency being generally not perceived by people.
摘要:
An underwater laser processing system has a laser torch; a laser torch driving mechanism for changing a laser emission position of the laser torch; and a chamber with one end opened to an external environment, which contains the laser torch; wherein a partitioning wall for preventing permeation of water is provided between a free end of the chamber and the laser torch. The system is used for detecting a sensitized portion and repairing it at one time using a sensitization detecting arrangement. Moreover, it is used for forming an alloying layer by melting a sprayed coating film, and for forming a new surface layer by emitting a laser beam through a solution containing a metal component.