Chromium-free Aluminum-zinc Coated Steel Coil For Kitchen Appliances

Modern kitchen appliances are confronted with a complex usage environment: high-temperature baking, smoke erosion, water vapor condensation, and chemical corrosion, etc., presenting extremely strict requirements for the manufacturing materials. Ordinary galvanized steel sheets are prone to rusting and coating detachment in such an environment, which affects the product's service life and user experience; chromium-passivated materials, on the other hand, have potential health risks and are difficult to meet the increasingly strict environmental protection regulations.

The chrome-free aluminized zinc steel coil adopts an innovative chrome-free passivation process, combined with a golden ratio alloy coating of 55% aluminum, 43.5% zinc and 1.5% silicon, providing outstanding comprehensive performance for kitchen appliance products. This material not only solves the environmental and health risks brought by traditional chromium-containing passivation treatment, but also performs exceptionally well in terms of resistance to oil smoke corrosion, high temperature resistance, and forming processing performance, fully meeting the strict usage requirements of various kitchen appliances such as ovens, microwave ovens, range hoods, and dishwashers.

As a professional supplier of chrome-free aluminized zinc steel coils for kitchen appliances, we are committed to providing high-quality materials that meet international standards to global home appliance manufacturing enterprises, helping customers create safer, more durable, and more competitive kitchen appliance products.

The chrome-free aluminized zinc steel coil is a high-performance metal material specially developed for kitchen appliance applications. It is produced through an advanced continuous hot-dip coating process, forming a uniform and dense aluminum-zinc alloy protective layer on the surface of the cold-rolled steel plate. Compared with traditional galvanized steel, this material combines the chemical stability of aluminum and the electrochemical protection characteristics of zinc, achieving a completely environmentally friendly surface treatment through chrome-free passivation technology.

The product surface presents a uniform silver-gray metallic luster, with excellent coating adhesion, allowing for subsequent surface treatments such as enamel coating and spraying, meeting the appearance design requirements of different kitchen appliances. The internal structure of the material is uniform, with stable mechanical properties, supporting complex processing techniques such as stamping, bending, and stretching. The coating will not crack or fall off during the processing.

In response to the special usage conditions of the kitchen environment, we have optimized the alloy coating composition and passivation process, enabling the material to have stronger resistance to cooking oil, water vapor, and salt spray corrosion, while ensuring that it does not produce harmful substances during long-term use in high-temperature baking environments, fully meeting the safety standards for food contact materials.

The chrome-free aluminized zinc steel rolls are widely used in the manufacturing of core components for various kitchen appliance products. In oven and grill products, the material's high temperature resistance and anti-oil smoke corrosion properties make it an ideal choice for the inner liner and cavity, capable of withstanding long-term high-temperature baking and oil stain erosion while maintaining stable performance. The inner cavity plates of microwave ovens and infrared ovens also extensively use this material to ensure material safety in microwave environments and facilitate cleaning and maintenance.

 

In range hoods and integrated cookers, chrome-free aluminized zinc steel rolls are used to manufacture air ducts, exhaust chambers and shell components, effectively resisting dual corrosion from oil smoke and water vapor, and maintaining the product's appearance as new for a long time. The inner shells and internal components of dishwashers have extremely high requirements for waterproof and detergent corrosion resistance of the material, and the excellent anti-corrosion performance of the aluminized zinc material can ensure that the product does not rust in humid environments for long-term use.

 

The shells and internal partitions of refrigerators, freezers and other cooling appliances also commonly use chrome-free aluminized zinc steel rolls as the base material. The material's flatness and coating performance support diverse surface treatments, meeting the appearance quality requirements of household appliances. In addition, the structural components of small kitchen appliances such as rice cookers, pressure cookers and disinfection cabinets can also be selected with appropriate specifications of chrome-free aluminized zinc materials according to product design requirements.

• To meet the special requirements of international logistics, the products adopt a professional export packaging scheme. Each steel coil is wrapped with waterproof and moisture-proof paper as the inner layer, effectively preventing water vapor erosion during transportation. The outer layer uses high-strength steel straps for multiple points of fixation to ensure the stability of the steel coil in the container and prevent displacement or collision damage during transportation.
• The steel coil is fixed on a standard wooden pallet that has undergone fumigation treatment. The pallet structure is specially designed to be able to withstand the weight of the steel coil and is convenient for forklift loading and unloading operations. The packaging is affixed with clear product labels, including specifications, weight, batch number, etc., to facilitate customer receipt and acceptance and warehouse management.
• The products are shipped from Qingdao Port and Tianjin Port in China. The two major ports have a complete international logistics network and liner routes, which can provide convenient shipping services for global customers. The order delivery cycle is 7 to 15 days, and the specific delivery time can be flexibly adjusted according to the order quantity and production plan.
• The regular minimum order quantity is 5 tons. For new customers' sample testing and small batch trial production, the minimum order quantity can be negotiated. The complete logistics tracking system supports customers to query the shipping status of the goods in real time, ensuring the safe and punctual delivery of the goods. The professional logistics team handles various export documents and customs clearance files, providing customers with one-stop logistics services.

• The chromium-free aluminized zinc steel coil products have obtained a series of international authoritative certifications, fully meeting the quality and environmental protection requirements of the global market. The production system has passed the ISO 9001 quality management system certification and established a quality control system covering the entire production process. The products have obtained the CE European safety certification, meeting the compliance requirements for entering the European market.
• Each batch of products can provide SGS or BV third-party test reports, conducting independent detection and verification of indicators such as material chemical composition, mechanical properties, coating performance, and corrosion resistance. The products fully comply with RoHS and REACH environmental standards, do not contain harmful substances, and meet the environmental regulations of major markets such as the European Union. Relevant compliance documents can be provided along with the products.
• In addition to high-quality products, we provide comprehensive service support to global customers. Professional technical teams provide material selection consultation, recommending the most suitable material specifications and parameters based on the specific application scenarios and processing techniques of the products. We support customized production according to customer drawings or samples, meeting special specifications and performance requirements.
• Stable production capacity ensures the continuous supply of large-scale orders, with sufficient annual production capacity to meet the batch purchasing needs of the home appliance industry. Flexible payment methods support various settlement methods such as T/T, immediate letter of credit, etc., reducing the financial pressure on customers. A complete after-sales service system provides timely technical support and problem responses.

Q: What are the differences between chrome-free aluminized zinc steel coils and ordinary galvanized steel in the application of kitchen appliances?

A: The corrosion resistance of chrome-free aluminized zinc steel coils is 2 to 6 times that of ordinary galvanized steel, and it can better resist the effects of cooking oil, water vapor, and cleaning agents in the kitchen environment. The high-temperature resistance reaches 315℃, which is much higher than that of ordinary galvanized materials, making it suitable for use in high-temperature appliances such as ovens. The most important thing is that it uses a chrome-free passivation process, which does not contain harmful heavy metals, and is in line with environmental protection and food safety requirements.

Q: Can the material be used for electrical components that come into direct contact with food?

A: Our chrome-free aluminized zinc steel coils undergo an environmentally friendly chrome-free passivation treatment, which does not contain hexavalent chromium or other harmful substances. The products have passed RoHS and REACH certifications and comply with relevant safety standards for food contact materials. For applications with special food contact requirements, we can provide a special inspection report to ensure the compliance of the product.

Q: Will the coating of the material peel off during stamping and bending processing?

A: Chrome-free aluminized zinc steel coils have excellent forming performance. Under normal processing conditions, the coating is firmly bonded to the base material and will not crack or peel off, fully meeting the processing requirements of complex structural components for kitchen appliances.

Q: How long does the delivery cycle usually take?

A: The delivery period for regular specification orders is 7 to 15 days. The specific delivery time will be confirmed based on the order specifications, quantity, and current production schedule. We will do our best to meet the delivery requirements of our customers.

Q: Can we provide product inspection reports and certification documents?

A: We can provide complete product certification documents, including ISO 9001 certificate, CE certification, RoHS and REACH compliance statements, etc. Each batch of products can provide SGS or BV third-party testing reports covering key performance indicators of the material, supporting the product certification and quality inspection work of our customers.