摘要:
A brazing sheet which has an excellent corrosion resistance and cladding rolling property, and is formed from a four layer aluminum alloy cladding member, and a heat exchanger of aluminum alloy, in which the brazing sheet is used, are provided. The brazing sheet is suitable for use as a member in the fluid path of an aluminum heat exchange for a car, and particularly, as a core plate of a drawn cup type heat exchanger. In the brazing sheet, one side of a core member is cladded with an intermediate member less noble than a core member, and the other side of both the core member and the intermediate member are cladded with Al--Si--Mg type cladding member, wherein the core member is of an aluminum alloy containing 0.5 to 1.6% of Mn, 0.15 to 0.35% of Cu, 0.05 to 0.50% of Mg, 0.06 to 0.30% of Ti, and the remainder being Al and unavoidable impurities, and the intermediate member contains 0.5 to 1.2% of Mn and the remainder being aluminum and unavoidable impurities, and 0.05 to 1.2% of Mg, if desired, and has a 70 to 130% deformation resistance. The intermediate member may be composed of an aluminum alloy containing 1 to 5% of Zn, 0.5 to 1.2% of Mg, and the remainder being Al and unavoidable impurities.
摘要:
An aluminum alloy clad material for heat exchangers exhibiting excellent erosion-corrosion resistance, corrosion resistance, pitting resistance, and brazability, which is suitably used as an aluminum alloy clad sheet for forming a constituent member, in particular, a tube for an aluminum heat exchanger such as a radiator and heater, and as a pipe for circulating a working fluid in the aluminum heat exchanger or a pipe connected to the heat exchangers. The aluminum alloy clad sheet comprises a sacrificial anode material clad on one side of a core material, wherein the core material comprises an Al—Mn alloy and the sacrificial anode material comprises an aluminum alloy, for example, an aluminum alloy comprising 3.0-12.0% of Si with the remaining portion consisting of Al and impurities, or an aluminum alloy comprising 3.0-12.0% of Si, 1-10% of Zn, and 0.15-1.2% of Fe with the remaining portion consisting of Al and impurities. The sacrificial anode material may comprise trace amounts of one or more of In, Sn, and Mg. The clad sheet may have a three-layered clad material in which an Al—Si-type brazing material is clad on the side of the core material.
摘要:
An aluminum alloy brazing sheet has a quad-layer structure made of an outer filler material, intermediate layer material, core material, and inner filler material. The core material contains 0.5-1.6% of Mn, 0.10-0.50% of Cu, 0.05-0.50% of Mg, and 0.06-0.30% of Ti, and, as impurities, 0.5% or less of Fe, 0.5% or less of Si, and 0.1% or less of Zn, with the remainder being Al and unavoidable impurities; the intermediate layer material contains 0.2-1.5% of Mg and at least one of 0.5-4% of Zn, 0.005-0.2% of In, and 0.01-0.2% of Sn, and, as impurities, 0.3% or less of Si, 0.3% or less of Fe, 0.05% or less of Cu, 0.05% or less of Mn, and 0.3% or less of Ti, with the remainder being Al and unavoidable impurities. The thickness of the intermediate layer material is 50 &mgr;m or more and no more than the thickness of the core material. The outer filler material and the inner filler material are Al—Si—Mg alloys, the outer filler material, preferably including at least one of 0.005-0.2% of In and 0.01-0.2% of Sn.
摘要:
A brazing composition for aluminum materials capable of functioning as a flux and a brazing material with a single component and providing a solid brazed joint exhibiting little local fusion. The brazing composition for aluminum materials which has the function of removing the oxide film on the surface of the aluminum material to be joined at a temperature lower than the melting point of the aluminum material and forming a eutectic aluminum alloy braze which fuses at such a low temperature by reaction with the aluminum materials, wherein the brazing composition comprises a first powder comprising at least one or more M—Si—F compounds comprising, in addition to at least Si and F, hydrogen or an alkaline metal or hydrates thereof or comprises this first powder as an component.
摘要:
An aluminum alloy clad material for heat exchangers exhibiting superior strength after brazing and excellent corrosion resistance is provided. The aluminum alloy clad material comprises a sacrificial anode material which is clad on one side of a core material, wherein the core material comprises an aluminum alloy comprising 0.3-2.0% of Mn, 0.25-1.0% of Cu, 0.3-1.1% of Si, and 0.05-0.35% of Ti with the remaining portion consisting of aluminum and impurities, the sacrificial anode material comprises an aluminum alloy comprising 1.5-8% of Zn, 0.01-0.8% of Si, and 0.01-0.3% of Fe with the remaining portion consisting of aluminum and impurities, and the total number of particles of Si compounds and Fe compounds with a particle diameter (circle equivalent diameter) of 1 &mgr;m or more present in the sacrificial anode material matrix is 2×104 or less per 1 mm2. The clad material is suitably used as a tube material or header plate material for automotive heat exchangers such as a radiator or heater core.
摘要:
A water-cooled oil cooler includes a laminated body formed by alternately piling up formed plates having cooling water passage openings and oil passage openings in the direction of plate thickness, and fin plates having cooling water passage openings and oil passage openings in the direction of plate thickness. A protrusion is projected from a passage wall of the cooling water passage opening of the fin plate into a cooling water passage. By setting the protrusion baser than the other part of the fin plate, the protrusion is made to serve as a sacrificial corrosion section to prevent the contact section from being precedently corroded.
摘要:
Provided are a sintered ceramic and a ceramic sphere which are inhibited from suffering surface peeling due to fatigue resulting from repetitions of loading and can attain an improvement in dimensional accuracy when subjected to surface processing and which have excellent wear resistance and durability.
摘要:
A condition monitoring system that diagnoses an abnormality of an apparatus provided in a wind turbine includes a monitoring apparatus including a sensor provided for the apparatus, a monitoring-side control apparatus that sets a threshold value to be used by the monitoring apparatus for diagnosing the abnormality of the apparatus, and diagnoses the abnormality of the apparatus based on the threshold value, and a monitoring terminal that monitors a condition of the apparatus. The condition monitoring system can correctly diagnose an abnormality of the apparatus provided in the wind turbine.
摘要:
Provided is a moving picture decoding apparatus including: a picture memory (103) that stores previously decoded picture data of a picture including macroblocks and macroblock information described on a macroblock basis, in association therebetween; an error judging unit (104) that judges presence or absence of an error for a current picture to be decoded; a picture data replacing unit (109) that replaces, when an error is present, picture data of the current picture to be decoded with that of a previously decoded picture in the picture memory (103); and a macroblock information replacing unit (113) that replaces macroblock information in association with the current picture to be decoded including an error with macroblock information stored in association with the previously decoded picture, or a macroblock information storage unit (602) that stores information that indicates presence of the error for the current picture to be decoded in association therewith.
摘要:
The present invention provides a composite shaped body comprising silica nanoparticles and an organic polymer, wherein the silica nanoparticles and the organic polymer form a three-dimensional network; thereby provides: a composite shaped body which exhibits excellent formability and fabricability and which is also suited for use, for example, in producing a silica glass provided with an electrical conductivity; and a silica glass (especially, an electrically conductive silica glass) obtained by firing the composite shaped body.