There are many sheet metal materials suitable for stamping processing, and the sheet metal materials widely used in the electronic and electrical industries include:
1. Ordinary cold-rolled plate SPCC
SPCC refers to the continuous rolling of steel ingots by cold rolling mills into steel coils or sheets of required thickness. There is no protection on the surface of SPCC, and it is easily oxidized when exposed to the air. Especially in a humid environment, the oxidation speed is accelerated, and dark red rust appears. The surface should be painted, electroplated or otherwise protected during use.
2. Galvanized steel sheet SECC
The substrate of SECC is general cold-rolled steel coil, which becomes an electro-galvanized product after degreasing, pickling, electroplating and various post-treatment processes in the continuous electro-galvanizing production line. SECC not only has the mechanical properties and similar processability of general cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It is highly competitive and substitutable in the market of electronic products, home appliances and furniture. For example, SECC is commonly used in computer cases.
3. Hot-dip galvanized steel sheet SGCC
Hot-dip galvanized steel coil refers to the semi-finished product after hot-rolled pickling or cold-rolled, after cleaning, annealing, immersed in a molten zinc tank at a temperature of about 460 ° C, so that the steel sheet is coated with a zinc layer, and then quenched and tempered Leveling and chemical treatment. SGCC material is harder than SECC material, has poor ductility (avoid deep drawing design), thicker zinc layer, and poor electric weldability.
4. Stainless steel SUS301
The content of Cr (chromium) is lower than that of SUS304, and its corrosion resistance is poor, but it can obtain good tensile force and hardness after cold working, and has good elasticity. It is mostly used for shrapnel springs and anti-EMI.
5. Stainless steel SUS304
One of the most widely used stainless steels, because it contains Ni (nickel), it is richer in corrosion resistance and heat resistance than steel containing Cr (chromium), and has very good mechanical properties, no heat treatment hardening, and no elasticity.
