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The whole production process of hot rolled steel plate

2021-04-02 03:42:20
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By definition, steel ingots or billets are difficult to deform and process at room temperature. They are generally heated to 1100 to 1250°C for rolling. This rolling process is called hot rolling. The temperature of the hot-rolled sheet is high, so the deformation resistance is small, and a large amount of deformation can be achieved. Taking the rolling of steel plate as an example, the thickness of the continuous casting billet is generally about 230mm, and after rough rolling and finishing rolling, the final thickness is 1-20mm.

The steel plate manufacturer introduces you to the production process of hot-rolled steel plate

Types and uses

1. Structural steel

Mainly used in the production of steel structure parts, bridges, ships and vehicles.

2. Weather-resistant steel

Adding special elements (P, Cu, C, etc.), has good corrosion resistance and atmospheric corrosion resistance, used in the production of containers and special vehicles, and also used in building structures.

3. Steel for automobile structure

High-strength steel plates with good stamping and welding properties are used in the production of automobile FRAME, WHEEL, etc.

4. Hot rolled special steel

Carbon steel, alloy steel, and tool steel for general mechanical structure are used in the production of various mechanical parts after heat treatment.

5. Cold rolled original plate

Used to produce various cold-rolled products, including CR, GI, color-coated sheets, etc.

6. Steel plate for steel pipe

It has good processing performance and compressive strength, and is used to produce high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an internal volume of less than 500L.

7. Steel plate for high pressure vessel

It has good processing performance and compressive strength, and is used to produce high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an internal volume of less than 500L.

8. Stainless steel plate

Stainless steel has good corrosion resistance and is mainly used in the food industry, surgical equipment, aerospace, petroleum, and chemical industries.

At the same time, due to the small width-to-thickness ratio of the steel plate, the dimensional accuracy requirements are relatively low, and the shape problem is not prone to occur, and the crown is mainly controlled. The requirements for the structure are generally achieved through controlled rolling and cooling, that is, controlling the start-rolling temperature, final rolling temperature and coiling temperature of finishing rolling to control the microstructure and mechanical properties of the strip.


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