Sheet metal,It can be defined as: sheet metal is a comprehensive cold working process for metal sheet (usually less than 6mm), including cutting, punching/cutting/compounding, folding, riveting, splicing, forming (such as car body), etc..Its remarkable feature is the same part thickness. Sheet metal processing according to the role of different products, choose different materials, generally need to consider the application and cost of products.
1. Cold rolled sheet SPCC, mainly used for electroplating and painting, low cost, easy molding, material thickness 3.2mm.
2. Hot rolled sheet SHCC, materialT≥3.0m andis also used for electroplating, paint, low cost, but difficult to form, mainly used for flat pieces.
3. Galvanized sheet SECC, SGCC. SECC electrolytic plate is divided into N material, P material, N material is mainly not for surface treatment, high cost, P material for spraying parts
4. Copper; Mainly with conductive material, its surface treatment is nickel plating, chrome plating, or not for treatment, high cost.
5. Aluminum plate; Surface chromate (j11-a), oxidation (conductive oxidation, chemical oxidation), high cost, silver plating, nickel plating.
6. Aluminum profile: Materials with complex section structure are widely used in various boxes. The surface treatment is the same as aluminum plate.
7. Stainless steel; The main use does not make any surface treatment, high cost
The Sheet metal processing generally the basic equipment includes plate shears, CNC punch, laser, plasma, water jet cutting machine, bending machine and all kinds of auxiliary equipment such as: uncoiling machine, leveling machine, deburring machine, spot welding machine.Generally, the most important four steps of sheet metal process are cutting, punching/cutting/folding/rolling, welding, surface treatment and so on. Sheet metal is plastically deformed by hand or through die stamping to form the desired shape and size, and can be further welded or machined to form more complex parts, such as chimneys commonly used in homes and car casings, all of which are sheet metal.
Advantages: sheet metal has the characteristics of light weight, high strength, electrical conductivity (can be used in electromagnetic shielding), low cost, good performance in large scale production, etc., and has been widely used in electronic and electrical appliances, communications, automobile industry, medical equipment and other fields;
The disadvantage is that only the same wall thickness processing parts, for shaped parts, complex surface parts can not be processed
The Sheet metal forming application: sheet metal parts are widely used in electronics, electromechanical, light industry, medical equipment, automobile, aviation and other industries.
