Hot rolled steel coil
Hot rolled coils are rolled at high temperatures and have good ductility, toughness and wear resistance, which is beneficial for subsequent processing and application.
Hot rolled coils are rolled at high temperatures and have good ductility, toughness and wear resistance, which is beneficial for subsequent processing and application.
Cold rolling refers to a rolling method that changes the shape of steel by squeezing it with the pressure of rollers at room temperature. Although the steel plate will heat up during the process, it is still called cold rolling. Specifically, cold rolling uses hot-rolled steel coils as raw materials, and after pickling to remove the oxide scale, it is pressure-processed, and the finished product is hard-rolled coils.
Its tensile strength is as high as 355MPa, and its yield strength also reaches the corresponding standard, which makes Q355B steel plate have better strength and stability under large loads and complex working conditions. At the same time, Q355B steel plate also has good toughness and impact resistance, and can maintain stable performance in harsh environments.
Because they are produced by cold rolling process, the surface quality of these steel coils is good. For example, the surface of cold rolled coils is smooth and free of iron oxide scale, which can meet some application scenarios with high requirements on surface quality, such as ensuring the appearance of the coils when used in home appliance manufacturing.
Specifically, these numbers represent the level of deep drawing performance. The larger the number, the better the deep drawing performance of the material. DC01 is a common material, not suitable for stretching, and only suitable for simple bending. DC02 can be used for shallow stretching, but is usually limited to bending. DC03 is called a stretching plate, and DC04 has the best stretching performance among the four materials and is suitable for deep drawing.
ST14 and ST15 are mainly used in applications that require deep drawing performance, such as automobile manufacturing, home appliance manufacturing, etc. ST14 is suitable for deep drawing grade manufacturing, while ST15 is suitable for ultra-deep drawing grade manufacturing. Specific applications: These steel coils are widely used in the manufacture of various containers, body panels, home appliance housings and other parts that require good forming performance.
