Aluminum Circle for Spinning

In simple terms, a spinning aluminum circle is a round aluminum blank sheet that is subsequently processed into various axially symmetric hollow parts through the metal spinning process. Spinning aluminum circles serve as the intermediate blanks connecting aluminum sheets to various deep-processed finished products.

As the basic raw material for spinning, the aluminum circle can be deformed into various axially symmetric thin-walled parts through the high-speed rotation of the spinning machine and the pressure applied by rollers, offering high material efficiency and high-precision forming advantages.

The spinning aluminum circle is mounted on a spinning lathe. While rotating, pressure is applied through tools, gradually forming hollow or curved shapes (such as cookware, lampshades, or automotive parts).

Haomei Aluminum's spinning aluminum circles are made from high-purity aluminum and precision-cut to ensure uniform thickness and smooth edges. Our products feature excellent formability, corrosion resistance, and superior surface quality, meeting high-standard processing requirements. We offer multiple alloy options (1060, 3003, 5052), various diameter and thickness specifications, making them ideal materials for cookware, lampshades, industrial parts, and decorative items. In addition, Haomei Aluminum can provide customized sizes and temper levels according to customer production requirements, ensuring that each batch of discs meets precise manufacturing standards.

Spinning Aluminum Circle Specifications

Spinning Aluminum Circle Material Selection & Temper Properties

Purity and temper are critical for spinning; softer tempers like O or H14 are easier to form.

• O temper (annealed soft): Best plasticity, most suitable for complex shape spinning, but lower strength
• H12/H14 (semi-hard): Balance of ductility and strength, suitable for medium difficulty spinning, resulting in more stable structures
• H24 (hard): High strength but limited ductility, suitable only for simple spinning

What is the best aluminum alloy for spinning?

Haomei Aluminum is one of the manufacturers of spinning aluminum circles, and commonly used spinning aluminum alloys include 1050, 1060, 1100, and 3003.

Surface of Aluminum Circle for Spinning: Smooth, without scratches or oil stains.

Chemical compositon of different alloy Spinning aluminium circle

Spinning Aluminum Circle Surface Treatment

The surface is smooth to prevent scratches during the spinning process.

Sometimes pre-treatment is done after spinning to facilitate anodizing or polishing.

Spinning Aluminum Circle Applications

• Cookware industry: frying pans, woks, soup pots, pressure cookers, kettles, etc. Spinning makes the cookware lighter, more uniform, and improves heat conduction.
• Lighting industry: LED lampshades, reflectors, lamp housings, etc., achieving complex curves and high surface finish.
• Automotive industry: wheel covers, fuel tank caps, radiators, decorative parts, etc., reducing vehicle weight.
• Home appliances: rice cooker inner pots, air fryer bodies, vacuum cleaner housings, etc.
• Industrial equipment: pressure vessels, pipeline fittings, instrument housings, sensor protective covers, etc.
• New energy sector: battery cases, charging station parts, solar reflectors, etc.
• Other industrial fields: architectural decorative parts, chemical containers, aerospace components, etc.

Aluminum Circle Spinning Process Principles & Advantages

Aluminum Circle Spinning Process

• Fix the aluminum circle onto the spinning lathe mold
• High-speed rotation (usually 1000-5000 rpm)
• Gradual pressure applied by rollers, making the material conform to the mold shape
• Finally forming the desired shape (e.g., cookware, lampshades, cylindrical parts)

Spinning Aluminum Circle Advantages

• High material utilization: saves 15-30% material compared to traditional stretching processes (e.g., a #28 frying pan can save 165g)
• High forming accuracy: dimensional tolerance up to ±0.05mm, surface roughness Ra<1.6μm
• Structural reinforcement: spinning aligns metal molecules fiber-like, increasing strength by 20-40%
• Wide applicability: can process thickness 0.3-10mm and diameters 50-2000mm in various shapes
• Cost-effective: low mold cost, suitable for small to medium batch production, short development cycle

Spinning Aluminum Circle Manufacturing Process

Spinning aluminum circles are blanks prepared for the spinning process, and their quality directly affects subsequent processing:

Blank preparation: circles are usually cut from aluminum coils after cold rolling. Cold-rolled sheets have denser internal structures and typically offer better spinning performance than hot-rolled sheets.

Spinning process: fix the circle on the spinning machine mold and rotate at high speed while applying pressure with rollers, gradually conforming to the mold to form axially symmetric hollow parts. This process does not require welding, has high material utilization, and improves the internal metal structure, resulting in parts with higher mechanical strength.

Haomei Spinning Aluminum Circle Quality

At Haomei Aluminum, we have strict standards for high-quality spinning aluminum circles, ensuring each product meets professional processing requirements:

• Surface quality: the circle surface is flat and smooth, free of scratches, oil stains, oxide skin, or pinholes, ensuring smooth subsequent spinning.
• Edge precision: edges are neat and burr-free, with diameter tolerance strictly controlled within ±0.1mm, ensuring accurate and reliable dimensions.
• Thickness uniformity: thickness deviation <±5%, ensuring uniform deformation during spinning and preventing local weak points.
• Mechanical properties: high elongation (≥25%) and appropriate tensile strength to prevent cracking during spinning and improve yield rate.
• Grain control: uniform fine grain structure, preventing orange peel or wrinkles during spinning, ensuring smooth and attractive surfaces.

Choosing Haomei Aluminum means choosing reliable spinning aluminum circle quality assurance.

Differences Between Spinning Aluminum Circles and Regular Aluminum Circles

Spinning Aluminum Circle Production Flow

• Raw material preparation: select corresponding alloy aluminum coils/plates, and perform annealing (O temper)
• Precision cutting: CNC punching or laser cutting into circles, ensuring diameter accuracy
• Edge treatment: deburring and chamfering to avoid stress concentration during spinning
• Surface cleaning: remove oil and oxide layer to improve spinning smoothness
• Quality inspection: full inspection of dimensions, thickness, surface, and mechanical properties
• Packaging and shipment: moisture-proof packaging to prevent transportation damage

Spinning Aluminum Circle Processing Considerations

The disc must have uniform thickness and high concentricity to ensure a smooth spinning process.

Deep spinning usually uses softer aluminum circles; harder alloys are suitable for shallow spinning or structural parts.

Spinning Aluminum Circle Purchasing Tips

• Select alloy and temper according to product shape complexity (O temper pure aluminum for complex shapes, semi-hard for simple shapes)
• Clarify thickness tolerance requirements (thinner-walled parts require stricter control)
• Choose a reputable manufacturer, ensuring complete material certificates and inspection reports
• Conduct small-batch trial spinning before bulk purchase to verify suitability

Spinning Aluminum Circles & Discs Packaging

Packaging Materials

Cardboard Boxes: Sturdy cardboard boxes are typically used to package aluminum circles. These boxes provide basic protection, preventing the circles from being compressed or impacted during transport.

Plastic Wrapping: Aluminum circles are usually wrapped in plastic film to protect their surfaces from dust, dirt, and moisture. Plastic wrapping also prevents direct friction between circles, reducing scratches or abrasions.

Foam Protection: Sometimes, foam pads or other cushioning materials are added to the packaging for additional protection, absorbing shocks and vibrations.

Packaging Methods

Single Piece Packaging: For small-sized or high-value aluminum circles, single piece packaging may be used, with each circle wrapped in a plastic bag or film and placed in a cardboard box. This method prevents direct contact between circles, reducing the risk of scratches.

Stacked Packaging: For larger quantities of aluminum circles, they are usually stacked in layers with plastic wrapping or cardboard spacers between the layers. This method saves space and ensures stability during transport.

Pallet Packaging: During transport, aluminum circles may be placed on pallets and then wrapped in plastic film. Pallet packaging facilitates forklift handling and stacking, helping to keep the circles orderly and secure.

Transport

Packaged aluminum circles need to be stacked properly to prevent crushing or deformation. Ensure stability during stacking and avoid placing heavy objects directly on the circles.

During transport, avoid severe vibrations and impacts, and ensure that the packaging remains intact to prevent damage to the aluminum circles.