Aluminum foil

一、Model of aluminum foil commonly used in transformers

Transformer aluminum foil, strip generally selected 1060, 1070 and 3003 aluminum strips, belonging to the conventional series in the aluminum strip family. 1 Series and 3 Series Aluminum plates belong to ordinary aluminum plates, and the thickness of the aluminum foil for the transformer is generally between 0.02-0.055 mm. Transformer aluminum foil, strip generally selected 1060 aluminum strip, which contains 99.6% or more, and is also known as pure aluminum plate, which belongs to a common series in an aluminum strip family. The advantage of this series of aluminum plates: the most common series, the production process is relatively single, technology is mature, and the price has a huge advantage over other high-end alloy aluminum plates. There is a good elongation and tensile strength, it is fully able to meet conventional machining requirements (stamping, stretching). For industrial pure aluminum, high plasticity, corrosion resistance, conductivity and thermal conductivity, but low strength, heat treatment can not strengthen the cutability; air welding, hydrogen gas welding and contact welding, not easy to braze; easy to bear each Pressure processing and extension, bending.

二、Where is the aluminum foil of the transformer?

The use site is generally the inner core winding of the transformer, and the transformer aluminum foil is wrapped around the windings through the winding machine. The most important use is to produce dry transformers.

三、Material

1060: 1060 Pure Aluminum (Standard: GB / T3190-2008) Industrial pure aluminum has a good plasticity, corrosion resistance, conductivity, and thermal conductivity, but low strength, no heat treatment, not good cutting, acceptable Contact welding, gas welding. Multi-purpose fabrication of some structural members having specific properties, such as aluminum foil, protective sleeve, electronic pipe isolation network, wire, cable, net, core and aircraft ventilation system parts and decorative parts.

1061-O: indicates that the 1060 alloy has been completely annealed. After annealing, it becomes a soft state. In various states, its tensile strength is the lowest, the elongation is the highest, and the processing is easier. O is the state, the finest state of annealing!

1050: 1050 Aluminum slabs belongs to a product in the pure aluminum plate series, and the chemical composition and mechanical properties of the 1060 series products are substantially 1060 aluminum sheets in the application. The last two Arabic numbers in the 1050 series are 50, according to the principle of the international brand name, the amount of aluminum must reach 99.5% is qualified product. my country's aluminum alloy technology standards (GB / T3880-2006) also clearly stated that 1050 aluminum content reached 99.5%. Since there is no other technical elements, the production process is relatively cheap, and the price is relatively inexpensive. It is the most common series in conventional industries. Industrial pure aluminum has the characteristics of high plasticity, corrosion resistance, conductivity, and thermal conductivity, but low strength, no heat treatment, not good cut, can be reacted, gas welding.

1050A: The grade is 1050 aluminum plate, and A is expressed as the original pure aluminum. 1050A represents the aluminum content of the industrial pure aluminum. 1050A. The aluminum content of 99.50%. Cannot be heat treatment

1070: 1070 is pure aluminum, has a good plasticity, corrosion resistance, conductivity, and thermal conductivity, but low strength, no heat treatment, not good cut, can be reacted, gas welding. Multi-purpose fabrication of some structural members having specific properties, such as aluminum foil, protective sleeve, electronic pipe isolation network, wire, cable, net, core and aircraft ventilation system parts and decorative parts.

There is also a 1070 aluminum similar to the aluminum, for industrial pure aluminum, with aluminum, small density, good conductivity, good thermal conductivity, good resistance, good plastic processing performance, can be processed, tape, Foil and extruded products, air welding, argon arc welding, spot welding.

四、Expand:

1 Series: A series of most aluminum content. The purity can reach more than 99.00%. For conventional industries

2 Series: High hardness, which is the highest in copper content, approximately 3-5%, for aviation field

3 Series: The manganese element is the main component. Between 1.0-1.5, used for industries and products for rust-proof requirements

5 Series: It belongs to the more common alloy aluminum plate series, the main elements are magnesium, the main features are low density, high tensile strength, high elongation, good fatigue, but not heat treatment. The application of the conventional industrial application is also

6 Series: Two elements of magnesium and silicon are suitable for use in anti-corrosion resistance and high oxidative property requirements

7 Series: belongs to the aviation series, is the aluminum magnesium zinc copper alloy, which is heat-treated alloy, which belongs to superhard aluminum alloy, has good wear resistance, and good weldability, but corrosion resistance is poor.