Steel Applications:
Steel is mainly used in construction, machinery, automobile, energy, shipbuilding, home appliances, etc. More than 50% of steel is used in construction. Construction steel is mainly rebar and wire rod, etc., generally real estate and infrastructure, real estate steel consumption is usually twice the amount of steel used in infrastructure, so the real estate market conditions have a greater impact on steel consumption; machinery, automobiles, home appliances, steel demand accounted for the proportion of steel consumption in about 22%. Mechanical steel to plate-based, concentrated in agricultural machinery, machine tools, heavy machinery and other products; home appliance steel for ordinary cold-rolled sheet, hot galvanized sheet, silicon steel sheet, etc., concentrated in refrigerators, washing machines, air conditioning and other white goods; automotive steel varieties are more, steel pipe, steel, profiles, etc. are consumed, and scattered throughout the car parts, such as doors, bumpers, floor plates, etc.. By tracking machine tools, industrial boilers and other heavy machinery production, white goods production and sales, automotive manufacturing investment, automotive production and demand to observe the steel demand situation.
the main varieties of steel:
Steel is iron and carbon, silicon, manganese, phosphorus, sulfur and a small amount of other elements composed of alloys. In addition to iron, carbon content plays a major role in the mechanical properties of steel, so it is also known as iron-carbon alloy. There are mainly the following varieties:
Pig iron Crude steel Hot rolled coil &plate Medium-Thick Plate
Deformed Bar H Beam Seamless Steel Pipe Wire Rod
1.pig iron: a kind of iron and carbon alloy, carbon content is usually 2% -4.3%, hard and brittle, pressure and wear resistance
2.crude steel: pig iron oxidized and processed from the carbon content is usually less than 2.11% of the iron-carbon alloy. Compared with pig iron, with higher strength, better plasticity and greater toughness.
3.hot rolled coil: slab (mainly continuous casting slab) as raw material, heated by the heating furnace (or even heat furnace heat), by roughing and finishing mill rolled from the strip.
4.medium-thick plate: is the main production varieties of steel plate and strip steel, can be used for mechanical structures, bridges, shipbuilding, etc.;.
5.deformed bar: rebar is a small cross-section of steel, commonly known as hot-rolled ribbed steel bar;
6.H-beam: H-beam cross-section resembles the letter “H”. With strong bending capacity, light weight structure, simple construction and other advantages. Mainly used for large building structures, large bridges, heavy equipment.
7.seamless steel pipe: seamless steel pipe is perforated by the whole round steel, no welds on the surface, mainly used in the manufacture of structural and mechanical parts, such as oil drilling rods, automobile drive shafts, boiler tubes, etc.;.
8.wire rod:Large length, high dimensional accuracy and surface quality, wire size tolerance precision, mainly used for metal products processing.
Steel production materials and smelting:
1.steel production materials:
Iron ore:Global iron ore resources are mainly concentrated in Australia, Brazil, Russia and China.
Fuel: mainly coke, coke is made from coking coal, so the supply of coke will be affected by the price of coke.
2.Iron and steel smelting:
Iron and steel smelting process can be divided into long process and short process, our country to long process production, long and short mainly refers to the different steelmaking process.
Long process main ironmaking, steelmaking, continuous casting. Short process does not need to go through the ironmaking, directly with the electric furnace will be smelted into crude steel scrap.
Post time: Jul-07-2024
