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Anonymous users2024-02-06Types of steel and steel.
1. According to the chemical composition, there are (1) low carbon steel, (2) medium carbon steel, and (3) high carbon steel. Carbon steel refers to an iron-carbon alloy that contains a small amount of manganese, silicon, sulfur, phosphorus and other elements in addition to iron and carbon, which is different because of the chemical composition contained in it.
2. According to the different carbon content, there are two categories: steel and pig iron. Among them, the iron-carbon alloy with a carbon content is called steel, and the iron-carbon alloy with a carbon content of 2% is called pig iron. Among them, alloy steel includes (1) low-alloy steel, (2) medium-alloy steel, and (3) high-alloy steel.
3. The different forms of iron and steel carbon can be divided into white iron, gray iron and ductile iron.
4. According to the smelting equipment, it is divided into (1) converter steel, (2) open-hearth steel, and (3) electric furnace steel.
5. According to the quality of steel, it is divided into (1) ordinary steel (2) high-quality steel (3) high-grade high-quality steel.
6. According to the steel structure, it is divided into (1) structural steel for construction and engineering, referred to as construction steel, and (2) structural steel for machinery manufacturing.
7. Professional steel is divided into (1) cast steel (2) forged steel (3) hot-rolled steel (4) cold-rolled steel (5) cold-drawn steel.
8. Tool steel is generally used to manufacture various tools, such as carbon tool steel, alloy tool steel, high-speed tool steel, etc. According to the steel process, it can be divided into cutting tool steel, die steel, and measuring tool steel.
9. Special steel: Steel with special properties, such as stainless acid-resistant steel, heat-resistant and skin-free steel, high-resistance alloy, wear-resistant steel, magnetic steel, etc. The above is the introduction of Changge Iron and Steel Steel to the common classification of steel and steel, for more information, please stay tuned.
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Anonymous users2024-02-051. Divide according to quality.
If it is divided according to quality, there will be ordinary steel, high-quality steel, high-grade high-quality steel, the content of chemical elements contained in it is not the same, so there will be too many distinctions, if it is distinguished according to the chemical composition, there will be carbon steel, alloy steel, of course, carbon steel and alloy steel will be classified below, which is divided according to its carbon content.
2. Follow the forging method.
If the classification of steel is according to the forging method, there will be hot-rolled steel, cold-drawn steel, forged steel, cast steel, special steel is also a kind of steel, special steel will also include die steel, tool steel, structural height, bearing steel, spring steel, hard wire, etc.
3. By use.
According to the application, it will also be divided into construction and engineering steel, structural steel, tool steel, special performance steel, and professional steel.
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Anonymous users2024-02-04Steel is divided into four categories: section steel, plate steel, pipe steel and steel wire.
1. Section steel. Section steel is a kind of solid strip steel with a certain cross-sectional shape and size, there are many varieties of section steel, according to its different cross-sectional shapes and divided into simple and complex broken search round surface two, the former includes round steel, square steel, flat steel, hexagonal steel and angle steel, the latter includes rails, I-beams, channel steel, window frame steel and special-shaped steel, etc., the diameter of the small round steel is called wire rod.
2. a steel plate. Steel plate is a kind of flat steel with a large width-thickness ratio and surface area, which is divided into three kinds of thin plates (thickness 25mm) according to different thicknesses, and steel strips are included in the steel plate category.
3. Steel pipes. Steel pipe is a kind of hollow cross-section of the long steel, according to its different cross-sectional shapes can be divided into round pipes, square pipes, hexagonal pipes and a variety of special-shaped cross-section steel pipes, according to different processing technology can be divided into seamless steel pipes and welded pipes two categories.
4. Steel wire. Steel wire is another cold working product of wire rod, according to different shapes of round steel wire, flat steel wire and triangular steel wire, etc., steel wire in addition to direct use, but also used in the production of wire rope, steel grain wire and other products.
The ** factor of steel:
1. National macroeconomic situation and main indicators.
2. The general trend of the international steel market, the number and quantity of import and export, as well as the relevant policies of the state on import and export.
3. The overall trend of the national steel market.
4. Leading the overall trend of the city.
5. The economic operation situation of the industry, the macro-control policy, the important decisions within the industry, the development trend of the industry and the demand. <>
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