Hot- rolled steel coil for construction low hardness

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25 m.t.
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100000 m.t./month

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One, introduction


Hot rolled coil is used for continuous casting slab or slab as raw material, after reheating furnace heating, scales entered the roughing mill in the high pressure water, roughing cut is expected by the head, tail, and then enter the finishing mill, the implementation of the computer controlled rolling, finally after rolling through the laminar cooling (computer controlled cooling rate) and coiling machine coiling, become straight hair volume. Hair straightener roll head, tail often forms a tongue shape and fishtail, thickness, width of poor accuracy, edge has wavy, folding, tower and other defects. The volume weight heavier, steel coil diameter is 760mm. (general pipe industry like use. )

2 two, characteristics


Because there is no after annealing treatment, the hardness is very high (HRB greater than 90), mechanical processing performance is poor, only a simplebending process has less than 90 degree directional (direction perpendicular to the rolled).

3, use three


Hot rolled products with high strength and good toughness, easy processing and good forming can be excellent performance of welding, which is widely used in ships, cars, bridges, buildings, machinery, boiler, pressure vesselmanufacturing industry.

The scope of application:

(1) after annealing processing into the common cold;

(2) processing galvanized galvanized unit before the annealing treatment;

(3) the basic do not need to process the panel.

4 four, classification


Carbon steel plate, carbon plate, low alloy plate, ship plate, bridge plate, boiler plate, container plate etc.. Rolling hard volumes: under normal temperature,the hot pickling volumes of continuous rolling.

Hot rolled steel strip products include steel (roll) and the shear of steel plate.And steel (coils) can be divided into straight and finishes volume (the volume,smooth rolling and slitting roll).

Hot- rolled steel coil for construction  low hardness

Hot- rolled steel coil for construction  low hardness

Hot- rolled steel coil for construction  low hardness

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Q:How can steel bars and bars be differentiated from each other in different uses?
Round, also known as wire, is round steel with small diameter, the commodity form is rolled into plate supply, on the site in common with diameters of 6, 8, 10, 12 mm, with low carbon steel are generally not used for reinforcement of reinforced concrete structure, much used for steel sleeve, and small diameter for the brick reinforcement of brick concrete structure "".
Q:If the surface shrinkage of wire rod is poor, what will happen to wire drawing?
In the process of using No. steel, it is mainly broken line, which is caused by surface quality, internal structure, mould, lubrication and so on. Specific reasons for specific analysis.
Q:What is a steel wire rod?
Steel wire rod is a folk saying:In the written definition of steel, it is classified as: flat and longFlat material, plain steel, taken here
Q:Can decarburization occur in low carbon and low alloy wire rods? Why?
We have exported to 10B21, because the technical agreement indicated in the low carbon steel does not exist decarburization, cause me a quality objection, because of the presence of surface defects, leading to the existence of local decarburization slight surface defects.
Q:Use of high carbon steel wire rods
Main applications: mainly used in the processing of carbon spring steel wire, oil quenching and tempering carbon spring steel wire, prestressed steel wire, high-strength quality carbon structural steel wire, galvanized steel wire, galvanized stranded wire, steel wire rope and so on.
Q:Types of wire rods
Hexagonal, fan-shaped and other special-shaped wire rods; the upper limit of diameter has been extended to 38 mm; the plate weight has increased from 40-60 kg to 3000 kg. Because of the development of new heat treatment process, the iron oxide sheet on the wire rod has been obviously thinned, and its microstructure and properties have also been greatly improved.
Q:What is a wire rod?
Wire rods, also known as wire rods, steel, wire, rod (s), usually refer to small diameter round steel discs. The diameter of the wire rod is in the range of 5-19 millimeters (usually 6-9 mm), and its lower limit is the minimum size of the hot-rolled steel section.
Q:Round steel. Wire rod. Is a high wire a kind of thing?
Round bar, wire rod and wire rod are not the same thing. Refer to refer toRound steel (Rounds): bars of diameter greater than 8mmBars (Bar): straight bars with rounded sections, six angles, square shapes, or other special-shaped bars. In stainless steel, the majority of bars generally refer to round steel.
Q:What is the difference between a wire rod and a straight bar?
Wire rods and bars are generally used in reinforcing bars
Q:What is the diameter of steel wire and the diameter of wire rod, and what's their difference?
The diameter of the steel wire is the diameter of the steel itself, and the diameter of the wire rod is how big it isFor example, you use a 5 mm diameter steel wire coil laps after a large diameter of 1 meters (of course, the middle is hollow)

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