Hot rolled strip

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Hot rolled strip

1, hot rolled ordinary carbon structural steel (GB3524-83)

Hot rolled plain carbon steel with ordinary carbon structural steel as material,made of 1.80-6.00mm hot rolled strip thickness, width of 50-1200mm.

1) the main purposes

(2) grade and chemical composition of materials

Standards and grades

National standard

Quite foreign standard

Function and use

Material categories

The implementation of standards

Grade

Standard No.

Grade

Suitable for manufacturing of cold forming parts

Low carbon steel coil

Q/BQB302

SPHC

JISG3131

SPHC

SPHD

SPHD

SPHE

SPHE

SAE1006/SAE1008

SAE1006/SAE1008

XG180IF/200IF

XG180IF/200IF

Steel for general structure

GB/T912-1989

Q195

JISG3101

SS330

For general construction of buildings, bridges, ships, vehicles, etc.

Q235B

SS400

SS400

SS490

ASTMA36

SS540

Mainly used for cold rolling blank, cold-formed steel billet, welded steel pipebillet and bicycle, hardware products manufacturing.


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Q:What are the characteristics of cold rolled strip technology?
Cold rolled blank because the surface covered with oxide film and a small amount of impurities, will directly affect the precision of rolling and the quality of the product, so the blank material must first sent to the shallow groove company push-pull continuous pickling, pickling of oxide film and annealing to remove impurities, can be sent to the high precision six roller reversible rolling mill made the required thickness. After rolling through forced circulation cover type bright annealing furnace and high precision leveling unit two Kun to soften and smooth surface, and then finished packing or according to customer demand straight points, finally packaging factory.
Q:How does the disc shear deal with the problem of side clips into the strip?
The disc shearing machine is a production line made up of uncoiling, feeding, shearing and coiling
Q:What are the categories of strip steel? How do you distinguish it?
Classification by usageAccording to the use of steel, can be divided into structural steel, tool steel, special performance steel three major categories.Structural steel: 1. used as steel for various machine parts. It includes carburizing steel, Quenched and tempered steel, spring steel and rolling bearing steel.2. steel used as an engineering structure. It consists of carbon steel in armour, B, especially steel and ordinary low alloy steel.Tool steel: steel used to make all kinds of tools. According to the use of different tools can be divided into tool steel, die steel and tool steel.Special performance steel: steel with special physical and chemical properties. Can be divided into stainless steel, heat-resistant steel, wear-resistant steel, magnetic steel and so on.
Q:Why is strip heat cheap?
Coil is 800mm in width, material better than the strip, because hot rolled production to refining furnace.
Q:What are the differences between strip steel and round steel? Where are they mainly used?
Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.Mainly used in the manufacture of various tools, cutting tools, moulds and tools (see tool steel), but also a large number of used in the manufacture of various mechanical parts.
Q:Hot rolled strip, the theory of the thinnest, how thin rolling, why not rolling too thin, is the material or the reasons for plate shape?
Tangshan Iron and steel production line design capacity of 0.8mm, the thin can be rolled to 1.8 or limited production, steel level, the purity of molten steel are related, and also there is a certain relationship between the plate width.
Q:What is the difference between strip and coil?
The strip and the coil is the main raw material for the production of welded steel pipe, the steel pipe manufacturing is mainly manufacturing process for spiral welded pipe used for steel roll uncoiling, leveling, trimming, molding, welding, welded pipe must be used for sheet forming and welding, if the steel roll uncoiling leveling must also be cut into leaflets the use of steel plate.
Q:What is the meaning of C hot strip material, B material is how to distinguish between
Hot rolled steel plate surface is plated black brown, plating cold rolled plate surface is gray, after plating from the surface smoothness to distinguish, lengzha board smoothness is higher than that of hot rolled steel plate.
Q:1 can thick galvanized steel square pipe burn welding?
Welding can only use 2.5 of the electrode, the current transferred to 80A, slowly welding, yes, I have also welded. If the line is conditional, do better with sub fluorine welding or oxygen welding.
Q:Specification and use of cold rolled strip
Cold rolled strip specifications: cold rolled strip and sheet, the general thickness of 0.1 ~ 3mm, width of 100 ~ 2000mm; are hot rolled strip or steel plate as raw material, at room temperature by cold rolling rolling. Grades are generally: SPCC, Q195, Q235-B.

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