Sheet metal, a kind of processing technology, sheet metal has yet to have a more complete definition. According to a definition in a foreign professional journal, it can be defined as follows: Sheet metal is for sheet metal (usually below 6mm) a comprehensive cold working process, including shearing, punching/cutting/compounding, folding, riveting, splicing, molding (e.g., automobile bodywork) and so on.
Sheet metal for the thickness of 6mm or less sheet metal into the cold process, including shear, punching/cutting/composite, folding, riveting, splicing, molding (such as car body), and so on, and its distinctive feature is that the same thickness of the same parts.
Sheet metal is characterized by light weight, high strength, conductive (able to be used for electromagnetic shielding), low cost, good mass production performance, etc., in the field of electronic and electrical appliances, communications, automotive industry, medical equipment and other fields have been widely used, for example, in the computer chassis, cell phones, MP3, sheet metal is an essential component. The design of sheet metal parts has become a very important part of the product development process, and mechanical engineers must be skilled in the design of sheet metal parts.
Introduction of sheet metal materials
1, hot-dip galvanized steel SGCC
Hot-dip galvanized steel coil refers to the hot-rolled pickling or cold-rolled semi-finished products, after cleaning, annealing, immersed in a temperature of about 460 ° C molten zinc tanks, and so that the steel sheet plated with a zinc layer, and then by the tempering of leveling and chemical treatment and become. SGCC material is more than the hard SECC material, ductility ( SGCC material is harder than SECC material, less ductile (to avoid deep drawing design), thicker zinc layer, and poorer weldability.
2, stainless steel SUS301
Chromium content is lower than SUS304, corrosion resistance is poor, but after cold processing can get very good tensile strength and hardness, elasticity is better, and more used in slug springs and anti-EMI.
3, stainless steel SUS304
Widest use of one of the stainless steel, due to the inclusion of nickel is rich than the chromium-containing steel. Corrosion resistance, heat resistance, has very good mechanical properties, no heat treatment hardening phenomenon, no elasticity.