Uacj Corporation

The University of Tokyo

Harima Chemicals, Incorporated

Hidetoshi Kumagai

Tomoki Yamayoshi

Hirokazu Tanaka

Naoki Sugimoto

Taketoshi Toyama

Shogo Yamada

Nobuhiro Honma

Takahiro Shinoda

Yuichi Ikeda

Naoki Yamashita

Taichi Suzuki

Yuji Hisatomi

Daigo Kiga

Ryo Tomori

Provided is a brazing sheet exhibiting excellent brazing properties where an aluminum material is brazed in an inert gas atmosphere such as a nitrogen gas atmosphere without using a flux. The aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using a flux, the aluminum alloy brazing sheet comprises: a core material; and a brazing material cladded on one side surface or both side surfaces of the core material, in which the core material is formed of aluminum or an aluminum alloy, the brazing material comprises 4.00 mass % to 13.00 mass % of Si and comprises 0.10 mass % to 2.00 mass % of Mg, with the balance being Al and inevitable impurities, and an integral value of Mg from a surface of the brazing material to a depth of 60 nm is 30 at %×nm to 600 at %×nm.

Aluminum alloy brazing sheet and method for producing same

An aluminum alloy extruded multi-hole tube for a heat exchanger is formed of an aluminum alloy comprising Mn of 0.60 to 1.80 mass % and Si of 0.20 to 0.70 mass %, with the balance being Al and inevitable impurities. The aluminum alloy has a ratio (Mn/Si) of the Mn content to the Si content being 2.6 to 4.0. Strength change (tensile strength (A) of the aluminum alloy after heating test−tensile strength (B) of the aluminum alloy before heating test) thereof in a heating test at 600° C.±10° C. for 3 minutes is −5 MPa or more. The present invention can provide an aluminum alloy extruded multi-hole tube for a heat exchanger having excellent extrudability and high strength after brazing, and a method for manufacturing the same.

Aluminum alloy extruded multi-hole tube for heat exchanger and method for manufacturing the same

An aluminum alloy brazing sheet formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material contains Mg of 0.40 to 6.00 mass % and Zn exceeding 2.00 mass % and equal to or less than 8.00 mass %. The core material contains Mg of 0.40 to 2.00 mass % and one or two or more of Mn of 1.80 mass % or less, Si of 1.50 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 μm, and each of the brazing materials comprises Si of 4.00 to 13.00 mass %.

Aluminum alloy brazing sheet and manufacturing method thereof

An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked in this order. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 μm, and the aluminum alloy includes Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %, Si of 1.50 mass % or less, and Fe of 1.00 mass % or less. The brazing material is formed of an aluminum alloy including Si of 4.00 to 13.00 mass % and one or two or more of Mn of 2.00 mass or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less.

The present invention provides a comprehensive assay capable of comprehensively measuring interactive factors for a variety of different types of proteins. In the present invention, provided is a system for detecting activation of a protein by integrating, with mediation of a plurality of factors, changes in the transcriptional regulatory region of a gene whose expression is changed by activation of the protein. The stimulation response ratio of transcription activity before and after stimulation by ligands possessed by individual transcriptional regulatory regions is synergistically integrated, so that a highly sensitive reporter assay system can be constructed.

Membrane protein activity measurement method

An aluminum alloy brazing sheet is formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material contains Mg of 0.40 to 6.00 mass %, and has total of contents of Mn, Cr, and Zr being 0.10 mass % or more. The core material contains Mg of 0.20 to 2.00 mass % and one or two or more of Mn of 1.80 mass % or less, Si of 1.50 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 μm, and each of the brazing materials contain Si of 4.00 to 13.00 mass %.

An aluminum alloy brazing sheet is formed of a four-layer material formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material comprises Mg of 0.40 to 6.00 mass %, and has a total of contents of Mn, Cr, and Zr being 0.10 mass % or more. The core material comprises Mg of 0.20 to 2.00 mass % and comprises one or two or more of Mn of 1.80 mass % or less, Si of 1.05 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 &#x3bc;m.

An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked in this order. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 &#x3bc;m, and the aluminum alloy contains Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %, Si of 1.50 mass % or less, and Fe of 1.00 mass % or less, with the balance being aluminum and inevitable impurities. The brazing material is formed of an aluminum alloy containing Si of 4.00 to 13.00 mass % with the balance being aluminum and inevitable impurities, and, in a drop-type fluidity test, a ratio &#x3b1; (&#x3b1;=K/K) of a fluid coefficient Kis 0.50 or more.

An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 &#x3bc;m, and the aluminum alloy contains Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %. Si of 1.50 mass % or less, Fe of 1.00 mass % or less, and Ti of 0.10 to 0.30 mass %, with the balance being aluminum and inevitable impurities. The brazing material is formed of an aluminum alloy containing Si of 4.00 to 13.00 mass % with the balance being aluminum and inevitable impurities. In a drop-type fluidity test, a ratio &#x3b1; (&#x3b1;=K/K) of a fluid coefficient Kis 0.50 or more.

A flux composition includes a component (A) that is a powder of an alkali metal zinc fluoroaluminate represented by 'MZnAlF(1)' (wherein M is K or Cs, and w, x, y, and z are a positive integer, the greatest common divisor of w, x, y, and z being 1), the content of the component (A) in the flux composition being 50 mass % or more. The flux composition prevents occurrence of a brazing defect and discoloration even when an aluminum alloy is brazed in an atmosphere having a high oxygen concentration, or an atmosphere having high humidity.

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Tokyo, Japan

Hidetoshi Kumagai