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The concept of steel: Steel is an alloy of iron, carbon and small amounts of other elements. Steel is an ingot, billet or steel that has been press worked into the shapes, sizes and properties we need. Steel is an essential and important material for national construction 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 production and ordering of steel Supply and do a good job in operation and management, and are 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 heavy steel plate, thin steel plate, electrical silicon steel sheet, strip steel, no Seam steel pipe, welded steel pipe, metal products and other varieties.


Steel is an alloy of iron, carbon, and small amounts of other elements. Stainless steel or corrosion-resistant alloy steel with 10.5% or more chromium-gold content is a generic term for this type of metal. It should be remembered that stainless steel does not mean that the steel will not rust or corrode, but simply that it is much more resistant to corrosion than alloys that do not contain chromium. In addition to chromium metal, other metal elements such as nickel, molybdenum, vanadium, etc. can also be added to the alloy to change the properties of the alloy steel, thereby producing stainless steels of different grades and properties. Careful selection of knives made of stainless steel with the most appropriate properties, depending on the purpose and location of the application, is critical to improving the efficiency and probability of success for a given job. Advantages of different metal elements in knives. Simply put: Steel is an alloy of iron and carbon. The other ingredients are there to differentiate the properties of the steel. The important steels are listed below in alphabetical order, and they contain the following ingredients:

The molten steel from the steelmaking furnace is cast into billets, and the ingots or billets are pressed into steel (steel products). There are many types of steel, which can be generally divided into four categories: type, plate, tube and wire.


There are many varieties of section steel, which is a solid long strip of steel with a certain cross-sectional shape and size. According to the shape of its section, it is divided into simple and complex sections. The former includes round steel, square steel, flat steel, hexagonal steel and angle steel; the latter includes rail, I-beam, channel steel, window frame steel and special-shaped steel. Small round steel with a diameter of 6.5-9.0mm is called wire.

Most steel processing is through pressure processing, which plastically deforms the processed steel (bill, ingot, etc.). According to the different processing temperature of steel, it can be divided into cold working and hot working. The main processing methods of steel are:


Rolling: The metal billet is passed through the gap of a pair of rotating rolls (various shapes), and the material section is reduced and the length is increased due to the compression of the rolls. This is the most commonly used production method for steel production. It is mainly used for Production of profiles, plates and pipes. Cold-rolled and hot-rolled.


Forging: A press working method that uses the reciprocating impact force 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 large cross-sectional dimensions.

Drawing: It is a processing method in which the rolled metal billets (forms, pipes, products, etc.) are drawn through the die holes 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 extrusion tube, and pressure is applied at one end to extrude the metal from the specified die hole to obtain a finished product with the same shape and size. It is mostly used for the production of non-ferrous metal materials.


According to the quality of steel, it can be divided into ordinary carbon steel and high-quality carbon steel. (1) Ordinary carbon structural steel, also known as ordinary carbon steel, has wide restrictions on carbon content, performance range and content of phosphorus, sulfur and other residual elements. In China and some countries, it is divided into three categories according to the guaranteed conditions of delivery: Class A steel (Class A steel) is steel that guarantees mechanical properties. Type B steels (Type B steels) are steels with guaranteed chemical composition. Special steel (C-type steel) is a steel that guarantees both mechanica

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