What's the difference between the various types of tie UPS?
Definition of all kinds of fixed-band coils: all kinds of fixed-band coils are rolled from hot-rolled coils at room temperature under recrystallization temperature, including plates and coils. Among them, sheet delivery is called steel plate, also known as box or plate; long, coiled delivery is called steel strip, also known as coil plate.
Fixed tapping is defined as rolling under recrystallization, but it is generally understood as rolling using materials rolled at room temperature. Aluminum cold rolling is divided into plate rolling and foil rolling, the thickness of 0.15 ~ above is called plate, 0.15 ~ below is called foil. In Europe and America, 3~6 continuous rolling mills are used as cold rolling equipment. In the process of production, there is no pitting and iron oxide scale defects in hot rolling because of no heating. The surface quality is good and the smoothness is high. Moreover, the dimension precision of cold-rolled products is high, and the properties and microstructure of products can meet some special requirements, such as electromagnetic properties, deep drawing properties and so on.
Specifications: thickness is 0.2-4mm, width is 600-2 000mm, steel plate length is 1200-6 000mm.
Brands: Q195A-Q235A, Q195AF-Q235AF, Q295A (B) -Q345 A (B); SPCC, SPCD, SPCE, ST12-15; DC01-06
Performance: Mainly using low carbon steel grades, requirements for good cold bending and welding performance, as well as a certain stamping performance.
The coil is a kind of steel plate, but it is actually a thin steel plate which is long and narrow.
The difference between the volume and the flat is a cut package.
Cold rolled coil is obtained by pickling and cold rolling of hot rolled coil. It can be said that it is a kind of cold rolled coil.
Cold-rolled coil (annealed): Hot-rolled coil after pickling, cold rolling, bell annealing, leveling, (finishing) obtained.
There are three main differences between them.
1, appearance, the general chill plate is a little black.
2. Surface quality, structure, dimension accuracy and so on are better than cold plate.
3. In terms of performance, the cold-rolled coil sheet directly obtained by cold rolling process hardens during cold rolling, resulting in increased yield strength and residual internal stress, the external performance is more "hard" so called cold-rolled coil sheet.
Therefore, yield strength: cold-rolled coil is greater than cold-rolled coil (annealed state), making cold-rolled coil (annealed state) more conducive to stamping.
The default delivery state of ordinary cold-rolled coil is annealing state.
Dingzha Steel Plate: Q225-GB912-89 Main Origins: Baosteel, Angang, Benxi Steel, Wuhan Steel, Handan Steel, Baotou Steel, Tangshan Steel, Lianyuan Steel, Jinan Steel and so on
Ordinary steel sheet: cold rolled from ordinary carbon structural steel or low alloy structural steel. The surface quality of cold rolled sheet is better. It has good stamping performance. The requirements to ensure that cold bending and cup test qualified, often used in automotive and other industries and coating materials.
Fixed-band high-quality sheet steel: mainly including a variety of high-quality steel cold-rolled sheet, the most commonly used is carbon structural steel sheet, especially for deep-drawing cold-rolled sheet steel, is a low-carbon high-quality steel 08Al cold-rolled sheet, steel sheet according to the surface quality is divided into three groups; I, II, III, respectively, expressing special high-grade, high-grade finishing surface, by Drawing grade is divided into ZF, HF, F (representing the most complex, complex and complex parts used in stamping and drawing). According to the allowable deviation of steel plate thickness, it is divided into A and B levels of precision, widely used in the automotive tractor industry.
Fixed steel plate: smooth surface, good processing, used in automobiles, refrigerators, washing machines and other household appliances, as well as industrial equipment, a variety of building materials. With the development of economy, cold-rolled steel plates have been called the necessary materials for modern society. Classification of cold-rolled products: hot-rolled pickling, rolled coil, common cold-rolled, galvanized (galvanized, fingerprint-resistant, hot-dip galvanized), aluminum-zinc plating, tin plating, color coating, electrical steel (silicon steel sheet), etc.