Fuji Photo Film Company, Limited

Nippon Light Metal Company, Ltd.

Fujifilm Corporation

Other

Nippon Telegraph and Telephone Corporation

Hideki Suzuki

Katsuhiro Kohda

Tomohiro Sasaki

Masakazu Nakajo

Yoshito Oki

Masae Nagasawa

Yasunori Ohta

Yoshihiro Ishikawa

Hirokazu Sakaki

Yuzuru Ohtsuka

Osamu Kuroda

Hiroshi Matsumoto

Shinichiro Fukui

Yasuhisa Nishikawa

Haruo Sugiyama

Yuichi Hosoi

Hirokazu Sawada

Hiroki Saito

Yoshinori Hotta

Toshiya Anami

Masamitu Nonomura

Nobuki Takahashi

Kazumitsu Mizushima

Seiji Tazaki

Takashi Nakamura

Hisashi Yamazaki

Nobuo Tomita

Atsunori Takasu

Hiroshi Chikugo

Hidetoshi Takasugi

Haruyoshi Kuriyama

Tomohide Yamagishi

Tadashi Asahi

Ichiro Okamoto

An aluminum alloy fin material for a heat exchanger having suitable strength before brazing enabling easy fin formation, having high strength after brazing, having a high thermal conductivity (electrical conductivity) after brazing, and having superior sag resistance, erosion resistance, self corrosion prevention, and sacrificial anode effect, a method of production of the same, and a method of production of a heat exchanger using the fin material are provided, that is, an aluminum alloy fin material having a chemical composition of Si: 0.7 to 1.4 wt %, Fe: 0.5 to 1.4 wt %, Mn: 0.7 to 1.4 wt %, and Zn: 0.5 to 2.5 wt %, Mg as an impurity limited to 0.05 wt % or less, and the balance of unavoidable impurities and Al, and having a tensile strength after brazing of 130 MPa or more, a yield strength after brazing of 45 MPa or more, a recrystallized grain size after brazing of 500 &#x3bc;m or more, and an electrical conductivity after brazing of 47% IACS or more, a method of producing an aluminum alloy fin material comprising cold rolling/annealing/cold rolling/annealing/cold rolling a thin slab continuously cast by a twin-belt system from a melt of the above composition under predetermined conditions, and a method of production of a heat exchanger comprising cooling the fin material at a predetermined rate after brazing heating.

Aluminum alloy fin material for heat exchanger and method of production of same and method of production of heat exchanger by brazing fin material

A heat exchanger use high strength aluminum alloy fin material having a high strength and excellent in thermal conductivity, erosion resistance, sag resistance, sacrificial anodization effect, and self corrosion resistance, characterized by containing Si: 0.8 to 1.4 wt %, Fe: 0.15 to 0.7 wt %, Mn: 1.5 to 3.0 wt %, and Zn: 0.5 to 2.5 wt %, limiting the Mg as an impurity to 0.05 wt % or less, and having a balance of ordinary impurities and Al in chemical composition, having a metal structure before brazing of a fibrous crystal grain structure, a tensile strength before brazing of not more than 240 MPa, a tensile strength after brazing of not less than 150 MPa, and a recrystallized grain size after brazing of 500 &#x3bc;m or more.

High strength aluminum alloy fin material and method of production of same

A heat exchanger use high strength aluminum alloy fin material having a high strength and excellent in thermal conductivity, elusion resistance, sag resistance, sacrificial anodization effect, and self corrosion resistance, characterized by containing Si: 0.8 to 1.4 wt %, Fe: 0.15 to 0.7 wt %, Mn: 1.5 to 3.0 wt %, and Zn: 0.5 to 2.5 wt %, limiting the Mg as an impurity to 0.05 wt % or less, and having a balance of ordinary impurities and Al in chemical composition, having a metal structure before brazing of a fibrous crystal grain structure, a tensile strength before brazing of not more than 240 MPa, a tensile strength after brazing of not less than 150 MPa, and a recrystallized grain size after brazing of 500 &#x3bc;m or more.

[PROBLEMS] To provide an aluminum alloy fin material for a heat exchanger, which has high strength and high heat conductivity after brazing, and is excellent in the resistance to sagging, erosion and self-corrosion and the in the sacrificial anode effect. [MEANS FOR SOLVING PROBLEMS] A method for producing an aluminum alloy fin material for a heat exchanger which comprises providing a molten aluminum alloy having a chemical composition, in wt %, that Si: 0.5 to 1.5%, Fe: 0.15 to 1.00%, Mn: 0.8 to 3.0%, Zn: 0.5 to 2.5%, with the proviso that the content of Mg as an impurity is limited to 0.05 wt % or less, and the balance: Al and inevitable impurities, casting the molten alloy continuously into a thin slab having a thickness of 5 to 10 mm by the use of a twin belt casting machine, winding up the slab into a roll, cold-rolling the slab into a sheet having a thickness of 0.05 to 2.0 mm, subjecting the sheet to an inter annealing at 350 to 500&#xb0; C., and cold-rolling the annealed sheet with a cold reduction rate of 10 to 96%, to prepare a sheet having a final thickness of 40 to 200 &#x3bc;m, and optionally subjecting the final sheet to a final annealing (a softening process) at a holding temperature of 300 to 400&#xb0; C.

High strength aluminum alloy fin material for heat exchanger and method for production thereof

[PROBLEMS] To provide an aluminum alloy fin material for a heat exchanger, which has high strength and high heat conductivity after brazing, and is excellent in the resistance to sagging, erosion and self-corrosion and the in the sacrificial anode effect. [MEANS FOR SOLVING PROBLEMS] A method for producing an aluminum alloy fin material for a heat exchanger which comprises providing a molten aluminum alloy having a chemical composition, in wt %, that Si: 0.5 to 1.5%, Fe: 0.15 to 1.0%, Mn: 0.8 to 3.0%, Zn: 0.5 to 2.5%, with the proviso that the content of Mg as an impurity is limited to 0.05 wt % or less, and the balance: Al and inevitable impurities, casting the molten alloy continuously into a thin slab having a thickness of 5 to 10 mm by the use of a twin belt casting machine, winding up the slab into a roll, cold-rolling the slab into a sheet having a thickness of 0.05 to 2.0 mm, subjecting the sheet to an inter annealing at 350 to 500&#xb0; C., and cold-rolling the annealed sheet with a cold reduction rate of 10 to 96%, to prepare a sheet having a final thickness of 40 to 200 &#x3bc;m, and optionally subjecting the final sheet to a final annealing (a softening process) at a holding temperature of 300 to 400&#xb0; C.

When cassettes are placed on a conveyor disposed in a cassette loader and detectors disposed on a support plate on the conveyor detect information of identification strips on side walls of the cassettes, the cassettes are judged as being loaded properly in the cassette loader. When the detectors fail to detect the identification strips, the cassettes are judged as not being loaded in a desired state in the cassette loader.

Radiation image information reading apparatus

A cassette is delivered from a cassette loader through a stock unit to a releasing unit. After a stimulable phosphor panel is supplied from the cassette to a reading unit by an unlocking mechanism and a panel ejecting mechanism, the cassette is fed to a position below an erasing unit so as to wait for the stimulable phosphor panel. After recorded radiation image information is read from the stimulable phosphor panel by the reading unit, the stimulable phosphor panel is fed to the erasing unit, which erases remaining radiation image information from the stimulable phosphor panel. Thereafter, the stimulable phosphor panel is stored back into the waiting cassette, which is delivered to a cassette discharger.

Apparatus for and method of reading and erasing radiation image information

A radiation image storage panel is composed of a phosphor layer containing an energy-storing phosphor and a light-reflecting layer contains particles of light-reflecting material, a binder, and a surface-treatment agent.

Radiation image storage panel

A plurality of stacked cassettes are loaded into a cassette loader, and the cassettes loaded in the cassette loader are changed in attitude and stocked in an erected state in a stock unit. After the cassettes are processed, they are discharged in an erected state into a cassette discharger.

After a housing of a cassette is opened by a suction cup, then a stimulable phosphor sheet is removed from the cassette by a shiftable roller and then fed in an auxiliary scanning direction by a feed mechanism. While being fed in the auxiliary scanning direction, the stimulable phosphor sheet is irradiated with a laser beam emitted from a stimulating optical system. Light emitted from the stimulable phosphor sheet upon exposure to the laser beam is guided through a light guide to a photoelectric transducer. After the recorded radiation image information is read from the stimulable phosphor sheet, the stimulable phosphor sheet is stored back into the cassette, and erasing light from erasing light sources is applied to the stimulable phosphor sheet in the cassette to erase remaining radiation image information from the stimulable phosphor sheet.

A radiation image storage panel composed at least of a phosphor layer containing energy-storable phosphor particles and a light-reflecting layer provided on one side of the phosphor layer, in which the energy-storable phosphor particles are composed of at least two kinds of particles having different mean sizes, one of which is composed of smaller particles having a mean size of 2.0 to 4.0 &#x3bc;m and the other of which is composed of larger particles having a mean size of 6.0 to 15 &#x3bc;m, and a weight ratio between the smaller particles and the larger particles is in the range of 10:90 to 50:50 (former:latter), and in which the light-reflecting layer gives a scattering length of 5 &#x3bc;m or less (the scattering length is for a stimulating light).

A radiation image storage panel has a phosphor layer composed of energy-storing phosphor particles and a polymer binder and satisfies the following conditions;[Tis a transmittance (%) of the phosphor layer at a peak wavelength of a stimulation spectrum of the phosphor particles; Tis a transmittance (%) of the phosphor layer at a peak wavelength of a stimulated emission spectrum of the phosphor particles; d corresponds to a value of 10,000&#xd7;W/&#x3c1; [W is a weight of the phosphor particles in a unit area of the phosphor layer expressed by mg/cmand &#x3c1; is a density of the energy-storing phosphor expressed by g/cm]; and D is a density of the energy-storing phosphor particles contained in the phosphor layer expressed by g/cm].

A stimulable phosphor sheet includes a stimulable phosphor layer in contact with a protective layer which is rigid and transparent. Stimulating light is projected onto the stimulable phosphor sheet from the protective layer side, stimulated emission emitted from the stimulable phosphor layer upon exposure to the stimulating light is detected by imaging the stimulated emission on a line sensor by an imaging lens from the protective layer side while moving the stimulable phosphor sheet relatively to the line sensor in a direction intersecting the direction in which the line sensor extends.

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Kanagawa, Japan

Hideki Suzuki