摘要:
A method of production of a composite billet for a nuclear fuel cladding tube wherein a hollow inner billet of zirconium is inserted in a hollow outer billet of a nuclear fuel cladding material. Following insertion of a resilient member in the hollow inner billet, pressure is applied to the resilient member axially of the billets to force the inner billet against the outer billet, to produce a pressure bonding between an inner surface of the outer billet and an outer surface of the inner billet.
摘要:
A method of production of a cladding tube for a nuclear fuel element wherein a first hollow billet of a zirconium alloy and a second hollow billet of zirconium having a smaller outer diameter than the first hollow billet are formed by heat treatment, forging and cutting. A resilient member is inserted in a space defined between the first hollow billet and the second hollow billet inserted in the first hollow billet, a pressure oriented axially of the two hollow billets is applied to the resilient member to bring the outer wall surface of the second hollow billet into intimate contact with the inner wall surface of the first hollow billet, and opposite ends of the two hollow billets are joined and sealed. The hollow billets thus joined into a unitary structure are subjected to hot extrusion, cold working and heat treatment to produce a composite tube of reduced diameter and reduced thickness, and the inner and outer wall surfaces of the composite tube are ground.
摘要:
A method for manufacturing an aluminum alloy fin material brazing comprises forming an ingot sheet by casting a molten liquid of an aluminum alloy by a continuous casting rolling method, and cold-rolling the ingot sheet to prepare a fin material. The aluminum alloy contains prescribed amounts of Mn, Fe, and Si, with the balance being Al and inevitable impurities. The continuous cast-rolling is applied under each a prescribed condition of a molten liquid temperature, a roll press load, a casting speed, and a thickness of the ingot sheet. Two or more intermediate annealings are applied midway in the cold-rolling process, with intermediate annealing including final intermediate annealing with a heating furnace in prescribed temperature range, thereby adjusting the prescribed rolling ratio in the cold-rolling, after the final intermediate annealing.
摘要:
A clasping device for fastening an object relative to a foundation or for fastening objects together which comprises a manipulatable lever means pivotable between locked and unlocked positions, a holder means pivotally connected to one end of the manipulatable lever means, and a substantially U-shaped body having one end pivotally connected to the manipulatable lever means. A length of flexible strap extends first through the substantially U-shaped body in one direction and again through the body in the opposite direction after having been turned around a stanchion carried by the manipulatable lever means. As the manipulatable lever means is pivoted from the unlocked position towards the locked position, the stanchion around which the strap is turned angularly moved about the pivotal connection between the manipulatable lever means and the body, thereby drawing the holder in relation to and towards the body.
摘要:
An aluminum alloy fin material for brazing, characterized by comprising an aluminum alloy comprising more than 1.4% by mass but not more than 1.8% by mass of Fe, 0.8% by mass or more but 1.0% by mass or less of Si, and more than 0.6% by mass but not more than 0.9% by mass of Mn, with the balance being Al and inevitable impurities,wherein 80% or more of the surface area, as viewed from the surface layer of the fin plane, is occupied by recrystallized grains with a length of 10 mm or more, in a direction rolled.
摘要:
A method of producing an aluminum alloy fin material for brazing, which comprises: casting an aluminum alloy by continuous cast-rolling, wherein the alloy comprises above 0.1 wt % to 3 wt % of Ni, above 1.5 wt % to 2.2 wt % of Fe, and 1.2 wt % or less of Si, and at least one of Zn, In, and Sn in given amounts, the balance being unavoidable impurities and aluminum, and cold-rolling in which annealing at 250 to 500° C. is conducted plural times midway in the cold-rolling, thereby producing the fin material of a given thickness; wherein a cast coil with a given thickness is produced by continuous cast-rolling, and wherein the second last annealing is carried out with a given thickness, and wherein the final annealing is carried out under heating conditions that do not allow complete recrystallization.
摘要:
The present invention is drawn to a clasping device for fixing a cargo item such as an automobile on a load carrying platform. The main assembly (A) of the clasping device has a body (B) and lever (C). Body (B) includes a main body (B.sub.1) and a sub-body (B.sub.2). The main body (B.sub.1), the sub-body (B.sub.2) and the lever (C) are pivotally connected to each other by pins (8a, 8b). In the release condition, the main body (B.sub.1) and the sub-body (B.sub.2) are bent and form a V-shape in association with each other due to the tension exerted and remaining on the strap (21).
摘要:
An audio apparatus having a detachable control panel or operating-part main unit includes a microcomputer for detecting an OFF state of an ACC position of the ignition key, or the attached/detached state of the operating-part main unit. When such states are detected, normal operations of the microcomputer; namely, the operations to turn on an SWD V.sub.DD terminal and an A/D port and to set a KEY DATA terminal into a standby mode, are stopped intermittently in order to execute a low consumption process in which electric power is consumed only for holding information in memory in the microcomputer. When the microcomputer detects the OFF state of the ignition key or the OFF state of an installation detection switch and, an alarm ON state is set in the memory in the microcomputer, then an alarm sound is generated from a speaker for a predetermined time. When the alarm sound is unnecessary, the state of the memory in the microcomputer can be updated to an alarm OFF state by depressing a function button and operating the ignition key. When the installation detection section detects the removal of the operating-part main unit, on the basis of a decrease in voltage value of an installation detection switch section and CPU recognizing the removal of the operation-part main unit, a control section sends control signals to a power supply limiting circuit and a data transmission switch section.
摘要:
A liquid crystal display includes a plurality of pixels arranged in a matrix. The matrix is formed by five rows and three columns. A pixel at a predetermined position is bisected.
摘要:
A clasping device which has a body and a manipulatable lever pivotally connected to the body. The body has at least two connecting members extending between a pair of side plate members thereof, one of the connecting members can contact a strap connected to the lever means during the usual use to firmly hold the lever in a locked position. The other of the connecting members can contact the strap when the assembly of the body and the lever is turned upside down, to hold the lever in the locked position. A large part of the lever is housed in the pair of side plate members of the body substantially in parallel to the body in the locked position, whereby the construction of the assembly is easy to handle and so firm as to be resistant to any big loads.