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The processing and production steps of aluminium strip

Time:2019-03-19

What are the processing and production steps of aluminium strip?How to produce aluminum strip for transformer winding?
Demand for aluminum foil using for aluminum coil for transformer is new and will be more.
Aluminium strip/ foil for transformer are made of high quality pure Aluminium. They are soft with high conductivity, flat surface, smooth edge and no burr. They are the key raw materials for making Transformer winding. Using qualified Aluminium strip, Transformer has the advantages such as miniature and light weight, nice insulation performance, anti-flaming, no pollution, small partial discharge, moisture resistant, stable operation, low noise & low maintenance cost etc.

Transformers are designed and built with copper or aluminium windings. But transformers using aluminum foil winding have advantage of small size, light weight, good insulation properties, flame retardant, non-polluting, partial discharge, resistant to moisture, smooth and reliable operation, low noise, and low maintenance cost.

Specification of Aluminium Strips and Aluminium Foils
Grade & Temper Thickness Width
1050/1060/1070/1350-HO(O) 0.2-3.0 mm 20-1350 mm
Inner Diameter Conductivity Number
(% IACS)
Reisitivity number           (Ω·mm² /m)
150/300/400/500 mm ≥61 ≤0.027548
Elongation (%) Tensile strength(Mpa) Density in 20°C
20 >60 2.7kg/cm3
Note: Meet RoHS, SGS, REACH, YS/T 713-2009
Wrought aluminium and aluminium alloy chemical composition 
Grade Al(%)
MIN
Si(%)
Max
Fe(%)
Max
Cu(%)
Max
MN(%)
Max
Zn(%)
Max
Mg(%)
Max
Ti(%)
Max
Other elements(%)
1050 99.5 0.25 0.4 0.05 0.05 0.05 0.05 0.03 0.03
1060 99.6 0.25 0.35 0.05 0.03 0.05 0.03 0.03 0.03
1070 99.7 0.25 0.04 0.03 0.04 0.04 0.03   0.03
1350 99.5 0.1 0.05 0.01 0.01 --- ---   0.03
 

ype transformers, aluminium–aluminium windings have been commonly used nowday. Aluminium foil strip can replace copper conductors in distribution transformers. Aluminum foil and sheet in appropriate strip widths and lengths have widely replaced wire in electrical transformers.

The aluminium strip 25mm x 3mm 1mm 2mm 5mm 10mm 50mm production process:

First step:raw material slitting

Aluminum foil raw material with Slitting equipment made into the width customers needs

Second:Aluminum foil winding

In order t0 ensure the quality of aluminum foil,the side treatment is made on the equipment

Third,Aluminum foil fixed

The detection width and thickness deviation of the aluminum foil are in line with the technical requipments of the customer,Add a paper sleeve to the scrolls and fix aluminum foil with glass fiber tape

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