Aluminum Foil For Transformer Winding

Your Premier Aluminum Foil For Transformer Winding Manufacturer From China

Aluminum Foil For Transformer Winding

Aluminum foil for transformer winding, also called aluminum transformer thin strip, which are mainly used in the dry type and oil-immersed transformers winding.

The aluminium foil for transformer winding range from 0.2 mm to 3.5 mm thickness and 10 mm to 1600 mm width.

The coils are wound over insulating material like paper, kraft paper, polyester film or glass cloth.

With high conductivity, good corrosion resistance and beautiful appearance, aluminum foil for transformer winding is essential material in the process of producing transformer.

Whatever size at whatever tight tolerance of aluminum foil you demand, HZW here is sure to have it!

aluminum foil for transformer winding

Aluminum Foil For Transformer Winding Specifications

Product NameAluminum foil for transformer winding
Grades1050, 1350, 1060, 1070
TemperO
Thickness0.2mm-3.5mm
WidthWidth:10mm-1600mm
EdgeSlit/Round
Quantity Tolerance±10%
Paper Core Internal
Diameter
Ø 150mm,Ø300mm, Ø400mm, Ø500mm paper core, special internal diameter core and without paper core on
special request
Surface TreatmentThe foil has a smooth surface, free from scratches and impurities
Electrical ConductivityTransformer windings made of 1050 O in annealed condition is guaranteed to be better than 60 % ACS.
Transformer windings made of 1060 O in annealed condition is guaranteed to be better than 61.5 % ACS.
Transformer windings made of 1070 O in annealed condition is guar-anteed to be better than 62.7 % ACS.
Transformer windings made of 1350 O in annealed condition is guaranteed to be better than 62 % ACS.
ApplicationsTransformer winding
PackagingWooden Pallet/Wooden Case
Payment Terms30% TT deposit and 70% balance before shipment, 100% LC at sight
Delivery Time7-10 working days
MOQ5 Tons
Shipping PortShanghai/Ningbo port
SampleThe sample of aluminium foil is available
RemarkAluminium foil can be customized
transformer 1050 o aluminium foils strips for transformers winding
1050 O Aluminium Foil For Transformer Winding
transformer 1060 o aluminum foils strips for transformers winding
1060 O Aluminium Foil For Transformer Winding
transformer 1070 o aluminium foils strips for transformers winding
1070 O Aluminium Foil For Transformer Winding
transformer 1350 o aluminium foils strips for transformers winding
1350 O Aluminium Foil For Transformer Winding

Grade of Aluminum Foil For Transformer Winding

Aluminum foil for transformer winding are usually made of 1060, 1050, 1070, 1350 grade aluminum alloy. They has the characteristics of high conductivity, soft texture. It can be used for semi-automatic and fully automatic winding machine winding. Aluminum foil is suitable for oil-immersed transformers and dry-type transformers.

At present, the most commonly used materials are 1050, 1060 and 1070 aluminum foils. The temper is O soft state.

The 1070 aluminum foil is the only choice for low voltage dry type transformers (up to 35KV) with no special requirements for fire resistance and heat dissipation performance.

The width of aluminum foil can be determined according to the capacity of transformer. Generally speaking, it should not be too large or too small.

In recent years, many transformer manufacturers have adopted a unified width of 800mm to make it easy to purchase and reduce costs.

Aluminum Foil For Transformer Winding Chemical Composition

1050 O Aluminum Foil For Transformer Winding Chemical Composition(%)
ElementAlSiFeMgZnMnTiCuV
Standard Value≥99.50.04310.2030.00130.00930.01040.020.00220.0039
1060 O Aluminum Foil For Transformer Winding Chemical Composition(%)
ElementAlSiFeMgZnMnTiCuV
Standard Value≥99.60.04310.2030.00130.00930.01040.020.00220.0039
1070 O Aluminum Foil For Transformer Winding Chemical Composition(%)
ElementAlSiFeMgZnMnTiCuV
Standard Value≥99.70.04310.2030.00130.00930.01040.020.00220.0039
1350 O Aluminum Foil For Transformer Winding Chemical Composition(%)
ElementAlSiFeMgZnMnTiCuV
Standard Value≥99.50.04310.2030.00130.00930.01040.020.00220.0039
aluminium foils strips for transformers winding edges

Aluminium Foil For Transformer Winding Edges Options

Many products managers and engineers have the trouble of transformer aluminum foil edges.

In the actual operation process, due to the influence of aluminum foil hardness and unloading speed, it is difficult to effectively control the edge of the transformer aluminum foil strip.

However, after our technical personnel have studied for a long time, we have found a solution to this problem. The edge finishing of our aluminium foils strips shall meet the requirements of the figures show.

Aluminum Foil For Transformer Winding: The Ultimate Guide

Aluminum foil is one of the most important metal materials in transformer manufacturing industry.

With the development of science and technology, more and more aluminum foil is widely used in the transformer industry.

So what’s the application? What’s the production process of aluminum foil for transformer winding?

In this guide, we will show you details about all.

So enjoy the read...

What is aluminum foil for transformer winding?

what are transformers aluminum foils strips

Aluminum foil is the most commonly used material in electrical engineering, and its main function is to isolate the conductor and insulate it.

Aluminum foil for transformer winding is a kind of soft metal film. It has good plasticity, uniform thickness and smooth surface.

Aluminum foil for transformer winding has a series of advantages, such as moisture proof, waterproof, anti-oil, anti-salts corrosion, acid and alkali resistance and chemical resistance.

Aluminum foil for transformer winding is made from electrolytic aluminum which is rolled into a thin aluminum roll with a thickness less than 0.5 mm during the rolling process.

The surface of the aluminum roll is clean, smooth and exquisite without spots or cracks. It can be divided into pure aluminum foil and alloys according to the content of alloying elements.

The transformer aluminum foil can be customized according to customer requirements of different widths and thicknesses.

1.What is the 1050 O aluminum foil for transformer winding?

The 1050 O aluminum foil in a transformer is the most commonly used material in transformers.

The reason why it can be widely used in transformers is related to its excellent properties.

1050 O aluminum foil has high electrical conductivity and thermal conductivity. In the actual application process of transformers, 1050 O aluminum foils are often used as support materials to form transformer windings, which can reduce the loss of transformers and improve the performance of transformers.

The thickness of the 1050 O aluminum foil in a transformer is generally between 0.1 mm and 1 mm. It adopts a single-layer or double-layer structure, which can effectively reduce the leakage magnetic field of the coil and improve its insulation performance.

The transformer 1050 O aluminum foil is a kind of connecting material for winding coils, which is wound on the coil in a certain way to form a specific inductance, mutual inductance or distributed capacitance. In addition to this kind of connection material, there are other forms of connection between coil turns, such as soldering connections and welding connections.

2.What is the 1060 O aluminum foil for transformer winding?

1060 O aluminum foil for transformer winding, the content is 99.6%, mainly used for some high and low voltage electrical equipment, such as various transformers winding. The common state is O state, so it is also called aluminum strip for transformer winding.

The aluminum strip in the electrical equipment industry has very high requirements on its performance, which requires the flexibility of the aluminum belt to be good enough.

This requires that the 1060 O aluminum foil for transformer winding has a very high elongation. In addition, it should have a good crack resistance and uniformity.

1060 O aluminum foil for transformer winding is mainly made of 1 series pure aluminum strip product, tensile strength can reach more than 135Mpa, elongation is up to 15%, the finished product has good electrical conductivity, thermal conductivity and corrosion resistance.

1060 O aluminum foil has high plasticity, corrosion resistance, electrical conductivity and thermal conductivity. But they have lower strength than other alloys.

1060 O aluminum foil has high plasticity at annealed state and hardening phenomenon in semi cold hardening, good corrosion resistance, good weldability, poor machinability, but with extrusion and stretch forming high performance. The electrical conductivity of 1060 O foil is about 60%IACS. The density is 2.7 g/cm3.

3.What is the 1070 O aluminum foil for transformer winding?

The 1070 O aluminum foil for transformer winding has the advantages of high conductivity, good corrosion resistance, high thermal conductivity and large extension ratio.

The annealing state is O.

The 1070 O aluminum foil for transformer winding can be used to make dry-type transformers, oil-immersed transformers and reactor windings.

The 1070 O aluminum foil for transformer winding has a density of 2.7 g/cm3 and the tensile strength is 60-105 MPa, which can meet the strength requirement of aluminum foil winding.

The elongation is 15-30%, which can meet the elongation requirement of aluminum foil winding. The electrical conductivity is ≥65%IACS or ≥60%IACS.

The 1070 O aluminum foil for transformer winding has good heat dissipation and does not increase the temperature rise of the coil during long-term operation, thus prolonging the service life of the coil. The use of 1070 O aluminum foil for transformer winding can reduce the mass manufacturing cost of transformers by 15%.

Advantages of 1070 O aluminum foil for transformer winding:

1. Good plasticity after annealing;

2. Easy to process and weld;

3. Excellent corrosion resistance;

4. High conductivity and thermal conductivity;

5. Low strength;

6. Good elongation (≥20%) and other characteristics.

4.What is the 1350 O aluminum foil for transformer winding?

1350 O aluminum foil for transformer winding is widely used in the transformer industry, such as oil-immersed transformers and dry-type transformers.

The 1350 O aluminum foil for transformer winding can be divided into two types: bare and coated.

The bare type is mainly used as the winding material of oil-immersed transformers, and the coated type is mainly used as the interlayer insulation material.

Features of 1350 O aluminum foil for transformer winding:

1. Aluminium foil 1350 has excellent elongation and tensile strength, suitable for winding forming;

2. Good plasticity, uniform thickness, no burr after stamping;

3. Excellent electrical conductivity and thermal conductivity properties;

4. Good corrosion resistance and weldability;

5. Smooth surface quality, low pinhole degree;

6. High temperature resistance, can withstand the test of high temperature 130℃.

What are the applications that aluminum foil for transformer winding can be used?

The transformer winding is an essential part of the transformer, it has a winding wire and a winding insulation. The function of the transformer winding wire is to carry the current, and the main function of the winding insulating material is to insulate between turns.

In the process of using aluminum foil for transformer winding, there are many applications.

Aluminum foil for transformer winding is also known as aluminum foil strip for transformer, which is widely used in the production of dry type transformers, oil-immersed transformers, high and low voltage transformers and so on.

What are the advantages of using aluminum foil for transformers?

The advantages of using aluminum foil for transformer winding are as follows:

1. Aluminum foil has good processing properties and can be processed into a variety of cross-sectional shapes according to user requirements.

2. The surface quality of aluminum foil is required to be very high, which can make the magnetic field distribution uniform when the transformer is working.

3. Aluminum foil has good electrical conductivity and thermal conductivity, which can help the transformer work under normal circumstances.

4. The magnetic properties of aluminum foil are excellent, which can ensure that the transformer works normally under various conditions.

5. Aluminum foil has high tensile strength and elongation, so it is widely used in transformers.

How to buy aluminum foil for transformer winding?

If you want to buy aluminum foil for transformer winding, you should know, there are many suppliers and manufacturers supply aluminum foils and supply to many industries like transformer industry.

But in fact, not all the suppliers have the ability to produce good quality products, some of them just choose cheaper materials but with high price which is not a good choice for users.

Here is a quick guide on how to choose a good supplier.

  • First, you should ask the manufacturer whether they can do the inspection themselves before delivery. Most of the large manufacturers have their own inspection team, they will strictly inspect all the goods before delivery.
  • Second, you should ask if they use 100% pure raw material to produce your goods, because there are some suppliers use recycled raw material or mixed raw material which may cause problem during using.
  • Third, it is better to visit their factory by yourself and check the production line and warehouse by yourself. It will be great if you can check their production process and production equipment. Because it is very important for you to know how they control the quality from process till delivery.

What is aluminum foil for transformer winding hardness?

The typical Brinell hardness for the foil material must determinate after annealing process (Hardness Brinell Typical: 18HB).

What is the packaging standard of aluminum foil for transformer winding?

aluminum foils strips for transformers packaging standards

The packing for aluminum foil for transformer is mainly about wooden pallet and wooden box.

Aluminum foil length of each roll should be same, packaging mark should have clear and complete information.

  1. Wooden Pallet: Standard export package, no fumigation; Pallet size: 1.1m x 1.1m x 0.8m; Gross weight: 1 Ton; 4 pallets/20′ FCL; 8 pallets/40′ FCL Or as per customer’s requirements.
  2. Wooden Box: The standard export package with fumigation certificate, it can avoid any potential damage during the transportation.

How aluminum foils for transformer winding are made?

The aluminum foil for transformer winding is made of high-quality aluminum material, which has the characteristics of high conductivity, soft texture, smooth surface, no burrs and no waves. The fineness of aluminum foil can be controlled at 0.2 mm or less, and the alloy composition and temper can be adjusted according to customer requirements. The thickness tolerance is ±0.007 mm, the width tolerance is ±1mm, the diagonal difference is ≤1mm and the surface quality is good.

aluminium foils strips for transformers winding production process

The following will introduce you to the production process of aluminum foil for transformer:

1. The raw material enters the furnace and heats up to remove impurities;

2. The ingot is cut into thick plates;

3. Put the thick plate into a cold rolling mill for rough rolling;

4. Put it into a hot rolling mill for finishing;

5. Annealing by heating and holding at a certain temperature;

6. Cutting outside by shearing machine;

7. Packaging and transportation

How about the HS code of aluminum foil for transformer winding?

To find out the detailed HS code of transformer winding related aluminum foils, you need to determine the specifications and applications of the strip foil.

The following are the part of aluminum foil for transformer widning.
HS code: 76069100.00