Aluminum circles for cookware are aluminum alloy sheets designed and produced specifically for the manufacture of various types of cookware. They usually appear in a round shape. This kind of aluminum material is precision processed and has the characteristics of uniform thickness and smooth surface. It is suitable for making inner pots, pot bodies, pot lids and related accessories of various kitchen supplies.
For example, aluminum circles are often used as the main structural material in household cooking utensils such as rice cookers, pressure cookers, non-stick pots, oil-free smoke pots, and composite pots. It is widely used because of its good thermal conductivity, lightweight characteristics and relatively low cost.
At the same time, in view of the requirements for corrosion resistance, strength and safety of cookware materials, this type of aluminum circles generally use specific brands of aluminum alloys, such as 3003 aluminum alloy, which while maintaining good thermal conductivity and processability, also has Certain corrosion resistance and mechanical strength.
In addition, in order to ensure food safety and health, the inner surfaces of cookware that are in direct contact with food will undergo special treatment, such as being covered with a non-stick coating or enamel layer to prevent aluminum elements from directly contacting food and possibly migrating into food.
Light weight: The density of aluminum and aluminum alloys is low, making the cookware relatively lightweight and easy to use and carry in daily life.
Good thermal conductivity: Aluminum is an excellent thermal conductive material. Cookware made of aluminum circles can transfer heat quickly and evenly, helping to improve cooking efficiency.
Corrosion resistance: Through surface treatment technologies such as anodizing, aluminum circles can form a dense oxide film, which effectively prevents cookware from being corroded by food or detergents during use.
Easy to process and shape: Aluminum is soft and has strong plasticity, making it easy to process the complex shapes required for various types of cookware.
The reasons for using aluminum circles in making cookware are as follows:
However, despite its many advantages, unprotected aluminum is susceptible to corrosion in acid and alkali environments and may react with certain foods. Therefore, in practical applications, aluminum circles for cookware usually use special inner layer protection measures to overcome this problem.
Aluminum circles for cookware usually use specific aluminum alloy materials because different alloy compositions can give aluminum materials different mechanical properties, corrosion resistance and thermal conductivity.
Aluminum circle alloy models for cookware include:
1050, 1060, 1070, 1100, these are series with higher pure aluminum content. The aluminum content is usually above 99%. They have good electrical and thermal conductivity, as well as good formability, but their strength and hardness are relatively low. , suitable for cookware components that require high thermal conductivity and do not need to withstand excessive pressure.
3003, 3004 is an aluminum alloy widely used in the field of cookware. It contains a small amount of manganese, which increases the strength and corrosion resistance of the material while maintaining good thermal conductivity. Therefore, it is often used to make pressure cookers and non-stick pans. , oilless hood and other cookware liner or shell that require higher strength and durability.
5052 aluminum circle, this alloy has higher strength and better corrosion resistance, and is suitable for more complex environments or cookware products that require higher tensile strength.
The size of aluminum circles for cookware can be customized according to customer needs
Thickness: Generally from 0.3 mm to 4.0 mm, or even thicker specifications.
Diameter: Common diameters range from 125 mm to 990 mm.