What are Problems Associated with Aluminum Wiring?

Aluminum-clad steel wire is also called aluminum-clad steel core aluminum stranded wire, which is an overhead conductor composed of aluminum-clad steel wire as the reinforcing core and twisted with hard aluminum wire. Compared with ordinary steel cored aluminum stranded wire, aluminum clad steel cored stranded wire has 5% lighter weight, increased current carrying capacity by 2 to 3%, sagging reduced by 1 to 2%, power loss reduced by 4 to 6%, and Good anti-corrosion performance, long service life, simple structure, convenient installation and maintenance, and large transmission capacity.

Aluminum clad steel core aluminum stranded wire is an overhead conductor composed of aluminum clad steel wire as a reinforcing core and twisted hard aluminum wire. Compared with ordinary steel cored aluminum stranded wire, aluminum clad steel cored stranded wire has 5% lighter weight, increased current carrying capacity by 2 to 3%, sagging reduced by 1 to 2%, power loss reduced by 4 to 6%, and Good anti-corrosion performance, long service life, simple structure, convenient installation and maintenance, and large transmission capacity. It is widely applicable to transmission lines of various voltage levels and transmission lines that require an increased aluminum-steel cross-section ratio. It can also be used for transmission lines in coastal areas, saline-alkali beaches and third- and fourth-level industrial pollution areas.

Aluminum-clad steel wire is a bimetal wire covered with a layer of aluminum uniformly, continuously and tightly outside a round steel wire. The strength of aluminum is relatively low, but it is relatively light. Its density is about 1/3 of that of copper. The conductivity of aluminum is relatively high, second only to silver and copper, ranking third. The corrosion resistance of aluminum is better: the strength of steel is higher, but the conductivity and corrosion resistance are lower. Therefore, the aluminum-clad steel wire is the product of the strong combination of strong and weak complement of aluminum and steel. It has the following characteristics:

(1) The range of adjustable size and performance of aluminum clad steel wire is relatively large.

(2) The steel and aluminum are metallurgical, so the bonding strength is good, which is conducive to the strength advantage of the aluminum clad steel wire.

(3) Compared with galvanized steel wire, it has better heat resistance, because the melting point of aluminum is higher than that of zinc, and the melting point of steel is higher.

(4) The covered steel wire has good corrosion resistance. If aluminum clad steel wire is twisted with aluminum wire or aluminum alloy wire and applied on overhead power transmission lines, there is no problem of galvanic corrosion. But galvanized steel wire has this problem. Therefore, it is better to use anti-corrosion isolation protection.

(5) The cross section of the wire can be made into a complex shape. For example, aluminum-clad steel contact lines (tram lines) for electrified railways. Its shape is "8", and one of its manufacturing methods is to use "Conform" continuous extrusion method to extrude into one shape.

(6) Aluminized steel wire is manufactured by the same method as hot-dip galvanized steel wire, which is reinforced.

Powder metallurgy is a process for preparing metal powders or using metal powders (or a mixture of metal powders and non-metal powders) as raw materials, forming and sintering, and manufacturing metal materials, composite materials, and various types of products. The powder metallurgy method is similar to the production of ceramics and belongs to the powder sintering technology. Therefore, a series of new powder metallurgy technologies can also be used for the preparation of ceramic materials. Due to the advantages of powder metallurgy technology, it has become the key to solve the problem of new materials and plays a pivotal role in the development of new materials.

Powder metallurgy includes milling and products. The milling is mainly a metallurgical process, which is literally consistent. And powder metallurgy products often go far beyond materials and metallurgy, and often cross-disciplinary (materials and metallurgy, machinery and mechanics, etc.) technology. In particular, modern metal powder 3D printing integrates mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, materials science, and laser technology in one, making powder metallurgy product technology a modern comprehensive technology across more disciplines ^[2] .