铝合金特性

铝合金特性 The series of 8030 aluminium alloy rod 1.什么是合金导体 What’s the alloy conductor? 合金导体是在纯铝中添加稀土，镁，铜 ，铁等元素，经过合金工艺形成的新兴导体材料， 主要材料是是稀土和AA8000(AL-Mg-cu-fe铝镁铜铁合金)导体材料，是一种真正用在配电 线路上的软质铝合金。 Alloy conductor is the addition of rare earth, magnesium, copper, iron and other elements in pure aluminum , it is a emerging conductor material after alloy process formation, the main material is rare earth and AA8000 (AL-Mg-cu-fe alloy) conductor materials, and is a kind of soft aluminum alloy used in power distribution line. 2.纯铝导体在电力电缆应用中的问题 The problem of pure aluminum conductors in power cable application 上世纪50-70年代，铜作为稀缺战略资源，我国在工业与民用电气应用方面的国策就是“以 铝代铜”铜制线缆不可能在民用建筑中使用。到80年代中期，纯铝制线缆在使用中的问题 暴露出来，尤其是铝导线接头氧化引发的多起活在。加之当时铜，铝价格差别不大，铜导体 在电气，机械，耐久等性能方面的优越性，在应用上就逐渐变成了以铜为主，到了90年代 以后，多项国家 标准 excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载 ， 规范 编程规范下载gsp规范下载钢格栅规范下载警徽规范下载建设厅规范下载 也要求在民用建筑中采用铜线缆，铝导体基本就没有采用了，纯 铝导体的缺点主要体现在以下几个方面: The last century 50-70 s, copper as a scarce strategic resources, our country in the industrial and civil electrical application of national policy is "to Al generation copper" copper cable could not use in civil architecture. In the mid-1980s , pure aluminum wire in the use of the problems exposed, especially the fires caused by the oxidation of aluminum wire connector. There was so little difference between copper and aluminum and copper conductor’s durable performance advantages in electrical, mechanical, superior durability and other aspects, in application gradually become dominated by copper, after the 1990s , a number of national standards require the use of copper cable in the civil construction. The shortcoming of pure aluminium conductor mainly reflects in the following respects: (1)机械强度差，容易折断 (2)易蠕变，需要紧固螺丝 (3)容易过载发热，存在安全隐患 (4)已发生电化学和化学腐蚀 (1) poor mechanical strength, easy to break (2) easy to creep, need of fastening screws (3) easy to overload fever, hidden safety problems (4) occurred in electrochemical and chemical corrosion easily 3.合金导体对比纯铝导体的性能优势 由于在合金导体中有铜，铁，镁，稀土等元素，对比纯铝导体，这些元素的增加极大的改善 了合金导体电气性能，机械性能和安全性能，如: 铜:增加合金在高温时候的电阻稳定性。 铁:抗蠕变性与压紧性提高了280%。避免了由于蠕变引起的松弛问题。 镁:在同样的界面压力下，能够提高接触面而且具有更高的抗拉强度。 稀土:提高合金的机械性，增加合金的导电性能，提高抗电化腐蚀能力 3.The performance advantages of alloy conductor in contrast to pure aluminum conductor Because there are copper, iron ,magnesiumr，rare earth and other elements in the alloy conductor, in contrast to pure aluminum conductor, adding these elements to improve the electrical properties , the mechanical performance and the safety performance of the alloy conductor, such as: Copper: resistance to increase stability of alloy in high temperature and time. Iron: the creep resistance and pressing sex increased 280%. Avoid the problems caused by creep relaxation. Mg: in the same interface pressure, can increase the contact surface and has higher tensile strength. Re: improve the mechanical property of the alloy,increases conductive properties of the alloy , improve the ability of anti electrochemical corrosin 从下 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 可以看出合金导体在抗蠕变性能能的明显优势 From the table below we can see the alloy conductor’s obvious advantages in creep resistance 从上表可以看出，在通过500小时的蠕变试验中，可以看到，和AA1350纯铝导体相比， AA8000系列合金的抗蠕变性能约是纯铝的280%，达到了和铜导体同样的水平。 As we can see from the table, thougth the creep test of 500 hours,compared with pure aluminum conductor and AA1350, the series of AA8000 alloy creep is about pure aluminum 280%, reached the same level about the copper conductor. 4.合金导体替代铜导体 Alloy conductor to replace copper conductor 借助下表的数据，我们可以清晰的看到，合金导体已经完全可以替代铜导体 With the aid of data in the table below, we can see clearly that alloy conductor has been completely can replace copper conductor Conductor Density Electrical resistivitConductivity yield elongati .... y ...... strength on ....... ..... ....... The electrician copper ........ .......... ........ ....... ........... Alloy ..... ....... ...... .... ..... 导体 密度(g/m电阻率(Ω*m?导电率屈服强度伸长率 ?) /m) IACS% (Mpa) (%) 电工铜 8.89 0.017241 100 60-80 30-45 合金 2.7 0.0279 61.8 53.9 30 导体 密度(g/m?) 电阻率导电率IACS% 屈服强度伸长率 (Ω*m?/m) (%) (Mpa) 电工铜 8.89 0.017241 100 60-80 30-45 合金 2.7 0.0279 61.8 53.9 30 (1)合金导体和铜导体的断裂伸长率基本相同。 (2)合金导体和铜导体的屈服强度基本相同，这意味着合金导体和铜导体的蠕变性能基本一 致。 (3)由于电阻率的基本不同，铜导体的导电率高于铝合金导体，合金导体是铜的导电率的 61.8%，但当我们利用先进的紧压技术将铝合金导体的截面积增大两档或者提高到铜导体截 面积的150%时，其电气性能一致。 (4)合金导体的密度只有铜导体1/3，重量远低于铜导体，综上所述合金导体性能与铜导体 基本相同，应用上是可以代替铜导体的。 (1) The fracture elongation of the alloy conductor and copper conductor is basically the same. (2) Yield strength of the alloy conductor and a copper conductor is basically the same, which means that the creep properties of the alloy conductor and copper conductor is consistent. (3) As the basic different resistivity, The conductivity of the copper conductor is higher than that of aluminum alloy conductor, alloy conductor is conductive rate with 61.8%, but when we use the advanced technology will be pressed aluminum alloy conductor cross-sectional area increased two files or raise to the copper conductor cross-sectional area of 150%, its electrical performance consistency. (4) The density of alloy conductor is only one third of copper conductors the weight is far lower than the copper conductor. Above all, alloy conductors with copper conductors are basically have the same performance, the application of alloy cnductor can be instead of the copper conductor.