Sheet metal is a comprehensive cold working process for metal sheets (usually below 6mm), including cutting, punching/cutting/composite, folding, welding, riveting, splicing, forming (such as automotive bodies), etc. Its prominent feature is that the thickness of the same component is consistent. The products processed through sheet metal technology are called sheet metal parts. The sheet metal parts referred to in different industries are generally different and are often used as a term for assembly.

The products processed by sheet metal technology are sheet metal parts, which have become an essential part of our lives. Sheet metal parts are produced through processes such as filament power winding, laser cutting, heavy-duty processing, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, metal sheet bending, forging, and water jet cutting.

A definition in a foreign professional journal can define sheet metal as a comprehensive cold working process for metal sheets (usually below 6mm), including cutting, punching/cutting/composite, folding, welding, riveting, splicing, forming (such as automotive bodies), etc. Its prominent feature is that the thickness of the same component is consistent.

Sheet metal parts have the characteristics of light weight, high strength, conductivity (which can be used for electromagnetic shielding), low cost, and good mass production performance. They have been widely used in fields such as electronics, communications, automotive industry, medical equipment, etc. For example, sheet metal parts are an essential component in computer cases, mobile phones, MP3 players, etc.

With the increasing application of sheet metal, the design of sheet metal parts has become an important part of the product development process. Mechanical engineers must master the design skills of sheet metal parts proficiently, so that the designed sheet metal not only meets the requirements of product function and appearance, but also makes stamping die manufacturing simple and low-cost.