97制服中出超碰人人黑人I91操网I亚洲中文在线一二区四区八区I狠狠riI久久无码人妻专区入口I性色av一区二区三区四区I18成人片I午夜毛片I天天躁夜夜躁躁躁2021I麻豆123I欧美videI日韩天码

Please double click on the text

Adhere to the highest quality, adhere to the best service

We since the inception of adhering to the quality as the foundation of the business philosophy, to create the first brand China electrician,

20 years of glorious history is to improve the quality of technology, continuous innovation of electrical history.

  • 1
  • 2
Performance comparison of aluminum alloy cable and aluminum core cable
2018-3-16
source:unknown
clicks:  2027        作者:未知
  • The performance of aluminum alloy cable and aluminum core cable has a definite difference. The corrosion resistance of pure aluminum is better than that of copper, but the corrosion resistance of aluminum alloy is better than that of pure aluminum. In the following four aspects, we analyze the corrosion resistance, mechanical properties, electrical conductivity, creep resistance and so on.
    One and corrosion resistance
    Pure aluminum corrosion resistance better than copper, but Aluminum Alloy corrosion resistance than pure aluminum better, because rare earth elements such as adding Aluminum Alloy in Aluminum Alloy can increase the corrosion resistance, especially resistance to electrochemical corrosion, electrochemical corrosion of pure aluminum to solve the long-term problems appear in the joint.
    Two. Mechanical properties
    First, tensile strength and elongation. Compared with pure aluminum conductor, aluminum alloy conductor has greatly improved tensile strength and increased elongation to 30% because of its special components and special processing technology. The aluminum alloy conductor is safer and more reliable.
    Second, bending properties. Aluminum core cable has poor bending performance, bending is easy to break. The bending radius of aluminum alloy power cable is 7 times the cable outer diameter, which is far superior to the 10 times -20 times of the cable's outer diameter specified in the minimum bending radius of GB/T12706 installation.
    Third, flexible performance. Torsion of pure aluminum cable as long as several times a point, the conductor will appear crack or break, easy to cause the accident, and Aluminum Alloy power cable can withstand bending dozens of times, eliminate the hidden danger of accident occurred before the installation and use of pure aluminum cable, greatly improve the safety and reliability.
    Three, electrical conductivity
    Aluminum alloy conductor is a new conductor material formed by alloy technology by adding rare earth, magnesium, copper, iron and other elements in pure aluminum. As we all know, after adding many other alloying elements in aluminum, the conductivity will decrease, and the electrical conductivity can be restored to the level of pure aluminum by process control, so that it has a similar current carrying capacity with pure aluminum.
    Four. Creep resistance
    The resistance to creep of pure aluminum is poor. The thermal expansion and cold contraction caused by power failure will cause creep changes at the connection point. After a long time, it will become slack, and the contact resistance will increase, which will cause overheating and cause accidents easily. The creep resistance of the AA8000 series aluminum alloy is 300% of the pure aluminum conductor, which greatly reduces the possibility of the relaxation of the cable joint and improves the connection of the conductor.

Since the inception of adhering to the quality as the foundation of this business philosophy

To create the first brand of Chinese electricians, 20 years of glorious history is the continuous improvement of quality and the continuous innovation of technology in the electrician's struggle history.

Copyright © 2018-2020 www.wuchengzhen.cn All rights reserved Yunfu chun tat Electronic Technology Co., Ltd.