What is special steel?

What is special steel?

Military materialsOther varieties are mainly some special quality profiles. Including hollow steel, oxygen bottles, industrial pure iron, hot rolling, cold heading steel easy to cut steel, D60, S/5A, F18, F11 etc., behind several are. High quality steel is not large, medium and small, round and Fang Gang divided into groups according to specifications from, such as 8-10mm, 11-15mm, 18-20mm, 205-245mm. flat area by large, medium and small flat. Six angle distance is not grouped. But the quality of steel group distance is no substitute for detailed specifications, in the document should be filled concrete specifications. Quality profile specification is simple, the vast majority of round steel. In addition, flat steel, and Fang Gang six chest steel, hollow steel, shaped and so on hot rolling (forging) size deviation of high-quality steel, Fang Gang, the six angle of the ordinary high accuracy and precision of two. And has a more precise cold drawn profile surface size and smooth surface polishing, polishing, but also some After polishing or round processing. The polished surface is exquisite, called steel. High quality profiles are rarely used, mostly through the use of the unit for further processing and after heat treatment, therefore, in addition to chemical composition, but also to ensure the mechanical properties after heat treatment.

Quality profilesHigh quality profiles is made of high quality steel processing profiles. Hot rolling (forging) quality profile, cold drawn (DIAL) quality profile and other varieties. Hot rolled (forging) quality profiles including carbon structural steel, carbon tool steel, alloy structural steel, spring steel, stainless steel, bearing steel, alloy tool steel, die steel, high-speed tool steel and other varieties. The cold (DIAL) quality profiles including carbon structural steel, carbon tool steel, alloy structural steel, spring steel, stainless steel, bearing steel, alloy tool steel, high-speed tool steel, free cutting steel, cold heading steel, S/5A and other varieties of.S/5A is a product used to make bombs, bullets.

Reinforcing bars for reinforced concreteIs a small type steel reinforced concrete. Including hot rolled round steel bar and prestressed concrete with reinforced concrete, thermal cold rolled steel. Steel reinforcement strip. In addition, also known as the other thread steel. Because the steel in rolling surface of rolled thread handle or reinforcement, steel reinforced concrete is in the construction industry reinforced. According to the material yield point and tensile strength, I, II, III and IV grade steel. The steel bars are used directly. The rebar, reinforced concrete to stress by heat treatment after heat treatment of high strength, but does not apply to steel welding and spot welding, reinforced by 40Si2Mn, 48Si2Mn, 45Si2Cr etc. steel after heat treatment is made, nominal diameter 6, 8.2, 10 mm. Cold rolled ribbed bar with Q215, Q235, 24MnTi steel, nominal diameter 4-12 mm. Steel after heat treatment should be rolled into plate, to heat treatment delivery.

Agricultural steelAgricultural steel is the main means of agricultural production and agricultural private or semi private steel, mainly are: Farm steel: Farm steel is commonly used steel for rural primary system of small tools and general civil tools. Main is a small section of round steel, flat steel and other varieties of composite steel composite steel billet, billet and hoe sickle knife blank, used in the manufacture of sickle, hoes and other small tools and other tools (such as knife, etc.). This kind of composite steel consists of two same components of the carbon steel hot rolled, low carbon steel is outside the body, soft and tough body steel seismic, good adhesion, easy sandwiching a layer of grinding. Leaf blade steel containing carbon, manganese, hard and wear-resistant, polished production tool edge is very sharp.

Plough steelUsed in the manufacture of general purpose plow, plows, shallow tillage implements main plough and ordinary before plow ploughshare, general wear and has sufficient strength and toughness of the steel. China's general use of 65Mn and 65SiMnXt steel. In addition, often make tools steel and special steel shape. Such as T steel, Z steel, arc type steel, double reinforcing steel, strengthen the font, grass blade steel, flat steel and steel rod concave lines. The cold-formed steel: cold-formed steel is the main material for the production of light steel structure, made of steel or steel roll forming. It not only the wall thickness can be made very thin, but also greatly simplifies the production process, improve production efficiency, can be produced using the general method to produce uniform wall thickness and complex cross sections of various shapes and different materials of cold-formed steel cold-formed steel. Except for the building structure, but also widely used In vehicle manufacturing, agricultural machinery and so on. A lot of cold-formed steel varieties, according to the opening section, semi closed, closed. According to the shape of a cold roll, angle steel, Z steel, square tube, rectangular tube, special pipe, shutter door according to the provisions of GB6725-92, cold-formed steel with ordinary carbon negative structure and quality carbon steel, low alloy steel plate or strip made of cold-formed structure