Heat exchanger tube
    6.
    发明授权
    Heat exchanger tube 有权
    热交换器管

    公开(公告)号:US08640766B2

    公开(公告)日:2014-02-04

    申请号:US12690685

    申请日:2010-01-20

    IPC分类号: B23K35/22 B23K35/36

    摘要: A heat exchanger tube comprising an Al alloy extruded tube, and a flux layer including Si powder, Zn-containing flux, and binder formed on an outer surface of the Al alloy extruded tube, wherein an amount of the Si powder applied on the Al alloy extruded tube is in a range of 1 g/m2 or more and 5 g/m2 or less, an amount of the Zn containing flux applied on the Al alloy extruded tube is in a range of 3 g/m2 or more and 20 g/m2 or less, and the Si powder has a particle diameter distribution such that 99% particle diameter is 5 μm or more and 20 μm or less, and an amount of coarse particle having a diameter of not smaller than 5 times (D99) is less than 1 ppm by volume.

    摘要翻译: 一种包括Al合金挤压管的热交换器管和在Al合金挤压管的外表面上形成的包含Si粉末,含Zn助熔剂和粘合剂的焊剂层,其中施加在Al合金上的Si粉末的量 挤出管的长度为1g / m 2以上且5g / m 2以下的范围,在Al合金挤压管上施加的含Zn助熔剂的量为3g / m 2以上且20g / m 2以下,Si粉末的粒径分布使得99%的粒径为5μm以上且20μm以下,直径不小于5倍(D99)的粗粒子的量较少 超过1ppm。

    Method for forming a conversion layer on an aluminum alloy product prior to fluxless brazing
    8.
    发明授权
    Method for forming a conversion layer on an aluminum alloy product prior to fluxless brazing 有权
    在无助焊钎焊之前在铝合金产品上形成转化层的方法

    公开(公告)号:US07875129B2

    公开(公告)日:2011-01-25

    申请号:US11572675

    申请日:2005-07-26

    IPC分类号: C23C22/56 B23K35/36

    摘要: A method of assembling aluminum alloy products, such as sheets, strips or tubes, by means of fluxless brazing, where the absence of flux is made possible by using a prior treatment resulting in formation of a conversion layer on the surface of the products. The treatment involves using a solution containing K+ and F− ions and at least one acid in a quantity such that the pH of the solution is less than 3. The inventive method enables effective flux was brazing in industrial conditions, such as a for the production of heat exchangers used in motor vehicles.

    摘要翻译: 通过无助焊剂钎焊来组装铝合金产品如片,条或管的方法,其中通过使用在产品表面上形成转化层的先前处理可以实现不需要助焊剂。 该处理包括使用含有K +和F-离子和至少一种酸的溶液,其量使得溶液的pH值小于3.本发明的方法使得能够在工业条件下进行钎焊,例如用于生产 用于机动车辆的热交换器。