In the kitchenware manufacturing industry, deep drawing is a key process for achieving integrated processing of core components such as cookware and kettles. Aluminum circles, as the core substrate of this process, directly determine the quality, lifespan, and user experience of the finished kitchenware. As a manufacturer specializing in aluminum circle products, based on years of industry experience and combined with stringent international standards for kitchenware products, we produce high-quality deep drawing aluminum circle for kitchenware. These aluminum circles are lightweight, have high thermal conductivity, are corrosion-resistant, and environmentally friendly, making them an important material in modern kitchenware manufacturing.
The deep drawing process places extremely high demands on the plasticity and forming stability of the aluminum circles, which is also the core starting point of our product design. The selected substrates all use special aluminum alloy grades such as 1050, 1060, and 3003. The 1060 aluminum alloy has a purity of ≥99.6% and an elongation of over 38%, allowing for significant deformation without cracking during deep drawing, making it particularly suitable for complex forming requirements such as deep-cavity pots and pressure cooker inner pots. Due to the addition of manganese, 3003 aluminum alloy maintains excellent deep-drawing performance while increasing tensile strength to 110-130 MPa and hardness HB≥35. The resulting kitchenware parts exhibit better resistance to deformation, meeting the requirements of frequent heating and cleaning.
In terms of specification adaptability, our deep drawing aluminum circles cover diameters from φ80mm to φ600mm and thicknesses from 0.3mm to 3.0mm, allowing for precise matching to different types of kitchenware. For example, 1060 aluminum circles with diameters of φ120mm-φ180mm and thicknesses of 0.8mm-1.2mm are used for small milk pot inner pots, balancing smooth forming with a lightweight finished product. While 3003 aluminum circles with diameters of φ300mm-φ400mm and thicknesses of 1.5mm-2.0mm are used for large frying pan inner pots, ensuring the load-bearing capacity and even heat distribution of the pot bottom after forming. It is worth noting that through high-precision cold rolling process control, the thickness tolerance of our aluminum discs can be consistently maintained within ±0.02mm, and the flatness error ≤0.5mm/m. This effectively avoids localized stress concentration caused by uneven thickness during deep drawing, reducing the scrap rate. This precision indicator has passed SGS testing and meets the requirements of the EU EN 485 standard.
In terms of application advantages, in addition to the core advantages of deep drawing, the thermal and safety properties of our aluminum circles also meet the needs of the kitchenware industry. Aluminum has a thermal conductivity of up to 203W/(m·K), far superior to materials such as iron and stainless steel. After anodizing, the oxide film thickness formed on the surface of our deep drawing aluminum circles for kitchenware is ≥10μm, which not only improves corrosion resistance but also further optimizes thermal conductivity, resulting in more uniform heating and reducing food scorching caused by localized overheating. At the same time, the products meet FDA food contact material safety standards, with lead, mercury, and other harmful heavy metal content all below 0.001%, meeting the food safety access requirements of major global markets.
From a production process perspective, we adopt a combined continuous casting and cold rolling process, effectively refining the aluminum alloy grains and resulting in a uniform and dense internal structure for the discs, thus avoiding the impact of casting defects on deep drawing performance. Subsequent degreasing, cleaning, and annealing processes involve strict control of annealing temperature (340℃-360℃) and holding time (2-3 hours) to ensure stable mechanical properties of the aluminum discs before deep drawing. For export business, we can also provide customized surface treatment and packaging solutions according to customer needs, such as scratch-resistant film coating and vacuum packaging for moisture protection, ensuring product quality stability during long-distance transportation.
The core value of deep drawing aluminum circles for kitchenware lies in the organic integration of excellent deep-drawing performance, precise dimensional adaptability, and reliable safety performance. Through material optimization, process refinement, and strict quality control, we enable our products to adapt to the deep-drawing processing needs of different types of kitchenware, helping manufacturers improve production efficiency and optimize finished product quality. Whether targeting home kitchenware brands or commercial kitchenware companies, our deep drawing aluminum circles offer substrate solutions that combine technological advantages with cost-effectiveness. This is the core competitiveness that has enabled us to win a stable customer base in the international market.