摘要:
An aluminum alloy sheet as a fin material for tubes of a heat exchanger, excellent in high-temperature sagging resistance and sacrificial anode property and having a high room-temperature strength, which consists essentially of:Manganese: from 0.95 to 1.50 wt. %,silicon: from 0.5 to 1.2 wt. %,zinc: from 0.1 to 2.0 wt. %,at least one element selected from the group consisting of:copper: from 0.05 to 0.60 wt. %, andmagnesium: from 0.05 to 0.60 wt. %, where, the total amount of said copper and said magnesium being up to 1.0 wt. %, andthe balance being aluminum and incidental impurities.the above-mentioned aluminum alloy sheet may further additionally contain at least one element selected from the group consisting of:chromium: from 0.03 to 0.30 wt. %, andzirconium: from 0.03 to 0.15 wt. % where, the total amount of said chromium and said zirconium being up to 0.4 wt. %.
摘要:
A method of producing a heat exchanger comprising abutting a tube made of an aluminum material and fins made of an aluminum material, applying to the resulting abutments a flux containing zinc halide, and thereafter conducting a reaction soldering in an inert gas atmosphere. The assembled tube and fins applied with the flux may be moved in a position to enhance the formation of zinc deposited by the reaction soldering during the drying step of the flux. The heat exchanger produced by this method has a thick and uniform Zn coating at the joints with good mechanical strength and surface conditions.
摘要:
A brazed aluminum article comprising at least two aluminum members brazed together with a filler metal, which consists essentially of:zinc: from 20 to 80 wt. %,silicon: from 1 to 11 wt. %, andthe balance being aluminum and incidental impurities.The above-mentioned filler metal may further additionally contain copper within the range of from 0.1 to 10 wt. %. The ratio of the silicon content to the aluminum content in the above-mentioned filler metal should preferably be within the range of from 0.05 to 0.12.
摘要:
A method of producing a heat exchanger comprising abutting a tube made of an aluminum material and fins made of an aluminum material, applying to the resulting abutments a flux containing zinc halide, and thereafter conducting a reaction soldering in an inert gas atmosphere. The assembled tube and fins applied with the flux may be moved into a position to enhance the formation if zinc deposited by the reaction soldering during the drying step of the flux. The heat exchanger produced by this method has a thick and uniform Zn coating at the joints with good mechanical strength and surface conditions.
摘要:
An aluminum alloy-based extruded flat tube having the increased proof strength and pressure-resistant strength is disclosed. An aluminum alloy-based extruded multi-path flat tube that is obtained by extruding an aluminum alloy billet is subjected to the low strain working at the low strain of 2% to 15% prior to the brazing process. After the flat tube is brazed, it may have the organization that includes the surface layer containing equal to 5% or more than 5% of non-recrystallized grains and the inner layer containing equal to 30% or more than 30% of recrystallized grains. The strain may be expressed as (1−H/H0) * 100%, for example, in which H0 refers to the height of the flat tube prior to low strain working process, and H refers to the height of the flat tube after the low strain working process is completed. The proof strength can be increased by the non-recrystallized grains contained in the surface layer 1a and in the surface layer 2a in the path of fluid passage. The reduction in the strength that might be caused by the filler erosion can be prevented as the filler erosion is restricted by the recrystallized grains contained in the inner layer 1b.
摘要:
Provided is a bulked yarn, comprising a bulked single spun yarn obtained from a composite twisted yarn comprising a single spun yarn and a water-soluble yarn, which are twisted together in a direction opposite to a twisting direction of the single spun yarn, by dissolving and removing the water-soluble yarn in a hydrophilic solvent from the composite twisted yarn. When the bulked yarn having a length of 100 cm is hung down in a state where both ends of the yarn are fixed at a distance of 10 cm from each other in a direction perpendicular to the direction of gravitational force, twisting does not occur or an average value of the distances from the uppermost end of a twisting section to the first and second fixed ends of the yarn is 30 cm or more.
摘要:
An aluminum alloy-based extruded multi-path flat tube having a multiple number of passageways extending internally through the flat tube in parallel with one another and adapted to be coupled to other such flat tubes to form a heat exchanger after performing a brazing operation with the flat tube having a surface layer extending inwardly from the external surface containing at least 5% non-recrystallized grains and having an inner layer extending from the surface area containing at least 30% recrystallized grains.
摘要:
In a programmable semiconductor memory device, a plurality of transistors operated as switches are provided, one switch transistor for each row and/or column lines. These switch transistors are divided into a plurality of groups. One terminal of each switch transistor is connected to the corresponding row and/or column line. A plurality of high voltage supply circuits are provided, one for each switch transistor group. A supplemental decoder is employed to select the switch transistor connected to the row and/or column line selected by a row and/or column decoder, to turn the selected switch transistor on so that the selected row and/or column line is supplied with a high voltage from the high voltage supply cirucit corresponding to the group including the selected switch transistor.
摘要:
A bulked yarn comprising a bulked single spun yarn obtainable from a composite twisted yarn in which a single spun yarn and a water-soluble yarn together in a direction opposite to the twisting direction of the single spun yarn by dissolving and removing the water-soluble yarn in a hydrophilic solvent from the composite twisted yarn is prepared. When the bulked yarn with a length of 100 cm is hung down in a state where both ends of the yarn are fixed at a distance of 10 cm from each other in a direction perpendicular to the direction of gravitational force, twisting does not occur or an average value of the distances from the uppermost end of a twisting section to the first and second fixed ends of the yarn is 30 cm or more. The bulked yarn has excellent texture, lightweight properties, and anti-pilling properties, as well as excellent weaving and knitting properties and productivity. Further, a woven or knit fabric comprising the bulked yarn is more lightweight, more voluminous, softer with an excellent touch, and better in heat-insulating properties and air permeability, has greater anti-pilling properties, sheds no fluff, and has better rapid-drying properties despite having great water absorbency.
摘要:
A heat exchanger comprising a tube, a fin, and a header pipe, wherein the tube contains, in mass %, 0.15 to 0.45% of Mn, 0.20 to 0.50% of Si, and the balance of Al and unavoidable impurities, and is coated with a coating of brazing composition containing 1.0 to 5.0 g/m2 of Si powder, 4.0 to 10.0 g/m2 of KZnF3, and 0.5 to 3.0 g/m2 of binder; the fin contains, in mass %, 1.20 to 1.80% of Zn, 0.70 to 1.20% of Si, 0.30 to 0.80% of Fe, 0.90 to 1.50% of Mn, one or two or more selected from 0.05 to 0.20% of Zr, 0.01 to 0.10% of V, and 0.01 to 0.10% of Cr, and the balance of Al and unavoidable impurities; and the header pipe comprises a core material, outer sacrificial corrosion protection material, and an inner brazing material.
摘要翻译:一种热交换器,包括管,翅片和集管,其中所述管以质量%计含有0.15至0.45%的Mn,0.20至0.50%的Si,余量为Al和不可避免的杂质,并且被涂覆 含有1.0〜5.0g / m 2的Si粉末,4.0〜10.0g / m 2的KZnF 3和0.5〜3.0g / m 2的粘合剂的钎料组合物, 翅片以质量%计含有1.20〜1.80%的Zn,0.70〜1.20%的Si,0.30〜0.80%的Fe,0.90〜1.50%的Mn,选自0.05〜0.20%的Zr中的1种以上, 0.01〜0.10%V,0.01〜0.10%Cr,余量为Al和不可避免的杂质; 并且总管包括芯材料,外部牺牲防腐蚀材料和内部钎焊材料。