Fabrication Process Of Steel Plates
Release time:
Nov 21,2024
Source:
First, iron ore, coke and flux are added to the blast furnace to produce molten iron through a high-temperature reduction reaction. This process is called blast furnace ironmaking.
The process of making steel plates mainly includes the following steps:
Steelmaking: First, iron ore, coke and flux are added to the blast furnace to produce molten iron through a high-temperature reduction reaction. This process is called blast furnace ironmaking.
Continuous casting: The molten iron is poured into a continuous casting machine and solidified into billets by water cooling. The development of continuous casting technology has enabled many companies to use continuous cast billets directly as raw material for subsequent processing.
Hot rolling: the continuous casting billet is heated to about 1000 ℃ to 1250 ℃, and then rolled through the hot rolling mill to form a certain shape and size of the steel plate. The hot rolling process is usually divided into two steps: semi-finished product processing and finished product processing, finished product processing is divided into roughing and finishing two stages.
Cold Rolling: The steel plate after hot rolling is cold rolled below the recrystallization temperature to further improve the dimensional accuracy and surface quality of the steel plate. Cold rolled steel plate can be produced by two-roll, four-roll reversible or multi-roll reversible mills.
Classification and use of steel plate:
Classification by thickness: thin steel plate (<4 mm), medium-thick steel plate (4~60 mm), extra-thick steel plate (60~115 mm).
Classification by rolling method: hot rolled steel plate and cold rolled steel plate.
Classified by steel type: ordinary steel, high quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron sheet.
Classified by professional use: oil drum plate, enamel plate, bullet-proof plate, etc.
According to the surface coating layer classification: galvanized sheet, tin-plated sheet, lead-plated sheet, plastic composite steel plate and so on.
Application areas of steel plate:
Steel plate is widely used in construction, bridges, ships, automobiles, machinery manufacturing and other fields. Thin steel plate is commonly used in automobile body, home appliance shell, etc.; medium-thick steel plate is used in bridges and building structures; extra-thick steel plate is used in heavy machinery and pressure vessels.
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