发明申请
- 专利标题: Aluminum alloy extruded product exhibiting excellent surface properties, method of manufacturing the same, heat exchanger multi-port tube, and method of manufacturing heat exchanger including the multi-port tube
- 专利标题(中): 表现出优异表面性能的铝合金挤压制品,其制造方法,换热器多口管,以及制造包括多孔管的换热器的方法
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申请号: US12930793申请日: 2011-01-18
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公开(公告)号: US20110114228A1公开(公告)日: 2011-05-19
- 发明人: Tomohiko Nakamura , Masaaki Kawakubo , Yoshiharu Hasegawa , Naoki Yamashita , Tatsuya Hikida
- 申请人: Tomohiko Nakamura , Masaaki Kawakubo , Yoshiharu Hasegawa , Naoki Yamashita , Tatsuya Hikida
- 专利权人: Denso Corporation,Sumitomo Ligtht Metal Industries, Ltd.
- 当前专利权人: Denso Corporation,Sumitomo Ligtht Metal Industries, Ltd.
- 优先权: JP2005-212069 20050722
- 主分类号: C22F1/04
- IPC分类号: C22F1/04 ; C21D9/08
摘要:
An aluminum alloy extruded product exhibiting excellent surface properties, contains 0.8 to 1.6% of Mn and 0.4 to 0.8% of Si at a ratio of Mn content to Si content (Mn %/Si %) of 0.7 to 2.4, with the balance being Al and inevitable impurities, the number of intermetallic compounds with a diameter (circle equivalent diameter) of 0.1 to 0.9 μm dispersed in a matrix being 2×105 or more per square millimeter. The aluminum alloy extruded product allows extrusion of a thin multi-port tube at a high limiting extrusion rate, prevents deposits from adhering to the surface of the extruded tube, and may be suitably used as a constituent member for an aluminum alloy automotive heat exchanger.
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