Home Appliances Board with Chromated Free Galvanized Steel Deep Drawn Grade Zero Spangle Surface

Hot-dip galvanized steel sheets are widely used in the home appliance industry, with different surface treatment processes applied depending on the specific application. Hot-dip galvanized sheets for household appliances are primarily classified into two categories: appearance parts and functional parts.

• The surface of appearance parts is typically painted, with the most common methods being spraying and color coating.
• The surface of functional parts, on the other hand, is usually treated with chemical processes, with passivation treatment being the most commonly used method to enhance corrosion resistance.

Home appliances require both high practicality and aesthetic appeal, with the outer panels playing a crucial role in determining the overall appearance and quality of the product. Any defects that could affect either the functionality or visual appeal are unacceptable. As a result, home appliances demand strict surface quality standards for galvanized sheets. Additionally, the mechanical properties required for appliance manufacturing involve complex deformation and processing techniques, each of which has unique performance requirements for the materials used. Given these high standards, premium galvanized sheets are tailored to meet the specific needs of customers, offering customized production services to ensure the highest quality in every aspect of the manufacturing process.

High-end galvanised sheet has been widely used in air conditioning units, ventilation ducts, blowers, cable bridges, distribution cabinets, cabinets, razor barbed wire and other industries, through the establishment of a perfect after-sales tracking service combined with the various experimental data, and constantly improve the quality of the product to meet customer demand for customized production services, and strive for the industry's preferred products.

Passivation treatment of home appliance plate is generally used for non-visible parts, the surface quality requirements are relatively low, allowing the existence of a slight feel of zinc dust, zinc slag, choking marks, inclusions, as well as visually visible chromatic aberration and other defects; sprayed or colour coated home appliance plate is generally used for visible external coverings, the surface quality requirements are higher, but due to the two different thickness of the surface coating, the surface defects of the requirements are different. Among them, the surface coating thickness of sprayed appliance board is 60-80μm, and the surface coating thickness of colour coated board is 18-28μm. sprayed surface has a partial masking function for defects due to the thick coating, while the surface coating of colour coated board is thin, which has an amplifying effect on the surface defects, so the colour coated board has a higher requirement for surface defects than the sprayed board.