Cold rolled steel is one of many kinds of steel, so-called cold-rolled steel in fact, the relatively thin, rectangular plate-like steel, their general thickness in 0.1-3mm unequal, the width is more in 100-2000mm unequal, and the length is generally relatively long. From the production process, cold rolled steel is rolled from cold rolling mill at room temperature, and the finished cold-rolled steel is usually rolled into rolls. Cold rolled steel also has many medium material and the model, but the general cold rolled steel will mark the steel grade, Cold Rolled Steel through the brand we may know their material and the specification.
As the cold rolled steel has good characteristics such as smooth surface, high precision and good mechanical properties, it is widely used in the manufacturing industry, and is also an important raw material for building materials industry. At present, in some industrialized countries, Cold Rolled Steel the production of cold-rolled Steel has accounted for about 30% of the total steel production, in China's steel companies have cold-rolled steel production.
Cold-rolled Steel According to the grades and specifications can be divided into a variety of different types of cold-rolled steel specific uses will also have a certain difference, but generally speaking cold-rolled steel is mainly used in automobiles, shipbuilding, electricity, coal, light industry, home appliances, Cold Rolled Steel hardware and other industries, for example, Brand SPCC, Q195, Q235-b Cold rolled steel is mainly used in construction machinery, transportation machinery, construction machinery, hoisting machinery, agricultural machinery and light industrial civil and other industries of general structural parts and stampings, and again, for example, cold-rolled ordinary strip (gb716-83) suitable for the manufacture of bicycles, sewing machines, Cold Rolled Steel agricultural machinery and other accessories and hardware products.
Cold rolled steel is a kind of cold-rolled steel which is produced by cold rolling method.
The difference between cold rolled steel and hot rolled steel is not in smelting process, Cold Rolled Steel but in rolling temperature, or in the end temperature of rolling. The final rolling temperature is lower than the recrystallization temperature of the steel to become cold-rolled steel.
Cold-rolled steel surface bright, good quality, can be directly used for processing finished products, the application is also very extensive. However, the rolling mill has high power, low rolling efficiency and intermediate annealing in order to eliminate machining hardening in the process of rolling.
Cold rolling is commonly used to roll sheet, Cold Rolled Steel steel strip and steel pipe.
Cold rolled steel is used as raw material of hot rolled strip or steel plate, and rolled in cold rolling mill at ambient temperature.
Cold rolled steel has many kinds and is widely used. In order to distinguish various chemical composition and various uses of strip, it is easy to choose and use, Cold Rolled Steel must know the steel number, and the steel number representation method and the steel classification has the close relation.