The concept of steel:
Steel is made of steel ingots, billets or steel materials that are processed into various shapes, sizes and properties that we need through pressure processing. Steel is an important material necessary for the construction of the country and the realization of the four modernizations. It is widely used and has a wide variety. According to the different cross-sectional shapes, it is generally divided into four categories: profiles, plates, pipes and metal products. In order to facilitate the organization of steel production and ordering The supply and management work is divided into heavy rail, light rail, large section steel, medium section steel, small section steel, cold-formed section steel, high-quality section steel, wire rod, medium and thick steel plate, thin steel plate, electrical silicon steel sheet, strip steel, and Seam steel pipe, welded steel pipe, metal products and other varieties.
Steel production method:
Most of the steel processing is through pressure processing, so that the processed steel (slab, ingot, etc.) produces plastic deformation. According to the different processing temperature of steel, it can be divided into two types: cold processing and hot processing.
The main processing methods of steel are:
Rolling: A pressure processing method in which a metal blank is passed through a pair of rotating rolls (various shapes). Due to the compression of the rolls, the cross-section of the material is reduced and the length is increased. This is the most commonly used production method for producing steel. Production of profiles, plates, pipes. It is divided into cold rolling and hot rolling.
Forging: A pressure processing method that uses the reciprocating impact of a forging hammer or the pressure of a press to change the blank into the shape and size we need. Generally divided into free forging and die forging, it is often used for the production of large materials, billets and other materials with larger cross-sectional dimensions.
Pulling: It is the processing method of drawing the rolled metal blanks (forms, tubes, products, etc.) through the die hole to reduce the cross section and increase the length. Most of them are used for cold working.
Extrusion: It is a processing method in which the metal is placed in a closed extruder, and one end is applied pressure to extrude the metal from a prescribed die hole to obtain a finished product with the same shape and size. It is mostly used to produce non-ferrous metal materials.