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TWO-LAYER CLAD ALUMINUM ALLOY TUBE WITH INNER SURFACE GROOVE, HEAT EXCHANGER, AND METHOD OF MANUFACTURING TWO-LAYER CLAD ALUMINUM ALLOY TUBE WITH INNER SURFACE GROOVE
TWO-LAYER CLAD ALUMINUM ALLOY TUBE WITH INNER SURFACE GROOVE, HEAT EXCHANGER, AND METHOD OF MANUFACTURING TWO-LAYER CLAD ALUMINUM ALLOY TUBE WITH INNER SURFACE GROOVE
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机译：具有内表面沟槽的两层复合铝合金管，换热器以及具有内表面沟槽的两层复合铝合金管的制造方法
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摘要
PROBLEM TO BE SOLVED: To provide a two-layer clad aluminum alloy tube with an inner surface groove in which a surface lap scratch is suppressed that may occur in form rolling.;SOLUTION: A two-layer clad aluminum alloy tube with an inner surface groove is characterized in that the two-layer clad aluminum alloy tube with an inner surface groove is formed from a core material comprised of an aluminum alloy, and a skin material comprised of an aluminum alloy clad on an outer surface of the core material, and is formed with a projecting type groove on the inner surface of the core material, wherein if hardness of the core material is Ha, and hardness of the skin material is Hb, then Hb/Ha0.7, and a mean clad rate of the clad material is 11% or less. Preferably, the core material is an aluminum alloy containing Mn: 0.8 to 1.8 mass%, Cu:0.4 to 0.7 mass%, Si:0.02 to 0.2 mass% and residual aluminum, and the skin material is an aluminum alloy containing Mn:0.3 to 1.5 mass%, Zn: 1.0 to 7.0 mass%, and residual aluminum.;COPYRIGHT: (C)2014,JPO&INPIT
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