Rolling mill

The process of rolling hot strip with thickness of 1.2 ~ 8mm on hot strip mill. Strip width below 600mm is called narrow strip; Over 600mm is called wide strip. The first hot strip mill went into operation in the United States in 1905, producing strips 200mm wide. The technical and economic indexes of hot strip mill are superior and the development is fast. In industrially developed countries, the output of hot rolled wide strip steel accounted for about 25% of the total steel output before 1950, and had reached about 50% in the 1970s. The raw material of hot rolled strip is continuous casting slab or first rolled slab, the thickness is 130 ~ 300mm. After the slab is heated in the heating furnace, it is sent to the rolling mill to be rolled into strips with a thickness of 1.00 ~ 25.4mm and rolled into steel coils. The rolled steel is common carbon steel, low alloy steel, stainless steel and silicon steel. Its main use is as raw material for cold rolled strip steel, welded pipe, cold bending and welded section steel; Or for the production of various structural parts, containers, etc.

The material: NES-M2021-2008 RP222/SP222

Automotive steel is mainly composed of sheet steel and special steel, with high strength, thin specification and corrosion resistance, high production technology. Compared with ordinary steel such as construction steel, automotive steel belongs to high value-added products, mainly reflected in the following aspects:

(1) High technical content. With the continuous improvement of the level of automotive products, the requirements for automotive steel are also increasing day by day. First of all, in order to reduce the weight of automotive products, save materials, reduce fuel consumption, reduce costs, and improve safety standards, it is necessary to use high strength and thin specification steel. Secondly, in order to improve the anti-corrosion performance of automobile products, prolong the service life of the automobile, it is necessary to improve the surface treatment technology of the automobile inside and outside the plate, such as the use of galvanized sheet or alloy galvanized sheet.

(2) Advanced production equipment, high level of production technology. The production of automotive steel requires the use of advanced production equipment, so the scale of investment is relatively large, and from investment construction to completion and production, to fully achieve the design of production capacity generally needs about 5 years. In addition, due to the high requirements for the production process, there are also high requirements on the level and structure of the production personnel.

The steel described provides stamping, swing shearing, leveling, laser cutting, laser welding and strip processing, and we also have a professional logistics team to provide you with a full range of services.

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