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    • 5. 发明申请
    • Aluminum alloy-based extruded multi-path flat tubes for the heat exchanger and method of manufacture thereof
    • 用于热交换器的铝合金基挤出多道扁平管及其制造方法
    • US20060260724A1
    • 2006-11-23
    • US11418750
    • 2006-05-05
    • Yasunori HyogoMasaya KatsumataMasami Asano
    • Yasunori HyogoMasaya KatsumataMasami Asano
    • C22F1/04
    • B21C23/001B21C23/085B21C37/151C22F1/00F28F1/022F28F21/084Y10S165/905
    • 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.
    • 公开了一种具有提高的抗强度和耐压强度的铝合金基挤压扁管。 在钎焊过程之前,通过挤压铝合金坯获得的铝合金挤压多径扁平管在2%〜15%的低应变下进行低应变加工。 在扁平管钎焊之后,可能具有包括含有等于5%或5%以上的未再结晶晶粒的表面层和含有等于30%或30%以上的再结晶晶粒的内层的组织。 该应变可以表示为(1-H / H 0 O)* 100%,例如,其中H <0 是指低管之前的扁平管的高度 应变加工过程中,H是指低应变加工完成后扁管的高度。 可以通过表面层1a中所含的未再结晶晶粒和流体通路中的表面层2a中的强度来提高检验强度。 由于填充物侵蚀受到内层1b中所含的再结晶晶粒的限制,可以防止可能由填料侵蚀引起的强度的降低。
    • 7. 发明授权
    • Method for production of heat exchanger
    • 换热器生产方法
    • US06708869B2
    • 2004-03-23
    • US10219978
    • 2002-08-14
    • Yasunori HyogoAkira WatanabeKen Tohma
    • Yasunori HyogoAkira WatanabeKen Tohma
    • B23K3102
    • F28F21/084B23K35/002B23K35/0244B23K35/286F28F9/18Y10T29/4935
    • A heat exchanger, characterized in that Al or Al alloy tubes, each having a thermally Zn-sprayed layer formed on the surface of it, and having a brazing filler metal layer formed on said thermally Zn-sprayed layer using a powdery brazing filler Al alloy composed of 5 to 60 weight % of Si and the balance of Al and unavoidable impurities, are combined with and brazed to an Al or Al alloy header having a brazing filler metal layer formed using a powdery brazing filler Al alloy composed of 5 to 60 weight % of Si and the balance of Al and unavoidable impurities. The tubes and the header are strongly bonded to each other, and Zn is uniformly diffused and distributed. So, the heat exchanger shows good corrosion resistance.
    • 一种热交换器,其特征在于,Al或Al合金管各自在其表面上形成有热喷镀层,并且使用粉末钎料Al合金在所述热喷镀层上形成钎焊金属层 由5〜60重量%的Si和余量的Al和不可避免的杂质组成并钎焊到具有由5〜60重量份的粉末钎料Al合金形成的钎料金属层的Al或Al合金集管 的Si,余量为Al和不可避免的杂质。 管和集管彼此牢固地结合,并且Zn均匀地扩散和分布。 因此,热交换器显示出良好的耐腐蚀性。
    • 9. 发明申请
    • ALUMINUM ALLOY HEAT EXCHANGER
    • 铝合金热交换器
    • US20120318488A1
    • 2012-12-20
    • US13582211
    • 2011-02-25
    • Yasunori HyogoMichihide Yoshino
    • Yasunori HyogoMichihide Yoshino
    • F28F1/12
    • F28F21/084B23K1/0012B23K35/22B23K35/362B23K35/365C22C21/00C22C21/12F28D1/05383F28F1/12F28F1/126F28F21/089F28F2275/04Y10T428/12736Y10T428/12764Y10T428/12792
    • An aluminum alloy heat exchanger formed by assembling and brazing an aluminum alloy tube and an aluminum alloy fin to each other, wherein a coating for brazing comprising 1 to 5 g/m2 of Si powder, 3 to 20 g/m2 of Zn containing flux, and 0.2 to 8.3 g/m2 of binder is formed on the surface of the aluminum alloy tube; the fin contains 0.8 to 2.0% by mass of Mn, Si in an amount of 1/2.5 to 1/3.5 of Mn content; less than 0.30% by mass of Fe, and Zn in an amount that is controlled in relation with the amount of the Zn containing flux in the coating for brazing to be in a region enclosed by points A, B, C, D, E, F of FIG. 5; a fillet comprising brazing filler of the coating for brazing is formed between the tube and the aluminum alloy fin after the brazing; a primary crystal portion that joins the fin and the tube is formed in the fillet; a eutectic crystal portion is formed in a portion other than the primary crystal portion; and an electric potential of the primary crystal portion is set equal to an electric potential of the aluminum alloy fin or higher than the electric potential of the aluminum alloy fin.
    • 一种铝合金热交换器,其通过将铝合金管和铝合金翅片组装和钎焊而形成,其中,包含1〜5g / m 2的Si粉末,3〜20g / m 2的含Zn助熔剂的钎焊用涂料, 在铝合金管的表面上形成0.2〜8.3g / m 2的粘结剂; Fe含有Mn:0.8〜2.0质量%,Mn含量为1 / 2.5〜1 / 3.5的Si; 小于0.30质量%的Fe,Zn的含量相对于钎焊用涂布中的Zn含量的量控制在由A,B,C,D,E, F。 5; 在钎焊之后,在管和铝合金翅片之间形成包括用于钎焊的涂层的钎料的圆角; 连接翅片和管的主晶体部分形成在圆角中; 在初晶部以外的部分形成共晶晶体部分; 并且将主晶体部分的电位设定为等于铝合金翅片的电位或高于铝合金翅片的电位。