SPCC refers to the continuous rolling of steel ingots into coils or steel plates with required thickness by cold rolling mill.
2. Galvanized steel plate SECC
The base material of SECC is common cold-rolled steel coil. After degreasing, pickling, electroplating and various post-treatment processes, it becomes an electro-galvanized product.
SECC not only has the mechanical properties and approximate machinability of common cold-rolled steel plates, but also has excellent corrosion resistance and decorative appearance. It has great competitiveness and substitution in the markets of electronic products, household appliances and furniture. For example, SECC is widely used in computer chassis.
3. Hot-dip galvanized steel plate SGCC
Hot-dip galvanized steel coil refers to the semi-finished products after hot rolling, pickling or cold rolling, which are washed, annealed and immersed in molten zinc bath at a temperature of about 460℃ to coat the steel plate with zinc layer, and then tempered, leveled and chemically treated.
4. Stainless steel SUS30 1
The content of Cr (Cr) is lower than that of SUS304, and its corrosion resistance is poor. However, good tensile strength, hardness and elasticity can be obtained after cold working. It is mainly used for leaf spring and electromagnetic interference prevention.
5. Stainless steel SUS304
One of the most widely used stainless steels, because it contains Ni (nickel), has better corrosion resistance and heat resistance than steel containing Cr (chromium), and has very good mechanical properties, no heat treatment hardening and no elasticity.
Extended data
Sheet metal correction is the preliminary plastic work of automotive sheet metal spray painting. Sheet metal correction has developed from the initial "welding repair" to the secondary manufacturing and assembly of the car body. Maintenance personnel should not only know the technical parameters and dimensions of the car body, but also master the material characteristics of the car body. The stress characteristics convey the deformation trend, stress points and production technology of the car body. Such as welding process.
There are still some irreparable defects in the car body after sheet metal correction, even if new parts are replaced, there will be imperfections. In order to be more perfect and accurate, we must use sculpture skills to make up for the defects. After the car is damaged due to deformation and other reasons, its flatness, wheel angle and lines need to be scraped and rebuilt.
This formula can be used to explain: scraping ash = restoring body skin = mold product = mold processing program.
Baidu encyclopedia-car body panel repair