Sheet metal features

Suzhou sheet metal parts have the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, and good mass production performance. They have been widely used in electronics, telecommunications, automotive industry, medical equipment and other fields. For example, in computer cases, mobiles phoness, MP3, sheet metal parts are an essential component.

With the increasing application of sheet metal, the design of sheet metal parts in Suzhou has become an important part of the product development process. Mechanical engineers must be proficient in the design techniques of sheet metal parts, so that the designed sheet metal can satisfy the product. The functions and appearance requirements can also make the manufacturing of stamping dies simple and low cost.

Sheet metal material

There are many sheet metal materials suitable for stamping. Sheet metal materials widely used in the electronics industry include:

Common cold rolled plate SPCC

SPCC refers to the continuous rolling of steel ingots into cold rolled steel sheets or sheets of required thickness. There is no protection on the surface of SPCC. It is very easy to be 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 other protection during use.

2. Galvanized steel sheet SECC

The substrate of SECC is general cold-rolled steel coil. After continuous degreasing, pickling, electroplating and various post-treatment processes, it becomes an electro-galvanized product. SECC not only has the mechanical properties and approximate processability of general cold rolled steel sheets, but also has superior corrosion resistance and decorative appearance. It has great competitiveness and substitution in the market of electronic products, home appliances and furniture. For example, the computer case is commonly used in SECC.

Sheet metal processing

3. Hot-dip galvanized steel sheet SGCC

Hot-dip galvanized steel coil refers to the semi-finished product after hot-rolled pickling or cold rolling, which is washed, annealed, and immersed in a molten zinc bath at a temperature of about 460 ° C, so that the steel sheet is coated with a zinc layer, and then tempered. Levelling and chemical treatment. SGCC material is harder than SECC material, poor ductility (avoid deep drawing design), thicker zinc layer, and poor weldability.

4. Stainless steel SUS301

The content of Cr (chromium) is lower than SUS304, and the corrosion resistance is poor, but it can obtain good tensile strength and hardness after cold working, and has good elasticity. It is mostly used for springs and anti-EMI.

5. Stainless steel SUS304

One of the most widely used stainless steels, because it contains Ni (nickel), it has more corrosion resistance and heat resistance than steel containing Cr (chromium), has very good mechanical properties, no heat treatment and hardening, and no elasticity.