Hot- rolled steel coil for construction low hardness

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Tianjin
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
100000 m.t./month

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Product Description:

One, introduction

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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

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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

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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

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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: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: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:Can decarburization occur in low carbon and low alloy wire rods? Why?
According to the truth, because of containing carbon steel, oxidation must occur in the heating process, and alloy steel, some alloy increases the decarburization tendency of carbon steel, low carbon steel so will produce decarburization, especially in high temperature and long time stay in the process.
Q:Types of wire rods
There are many kinds of wire rods. Carbon steel wire rod in the low carbon steel wire rod, commonly known as cord, medium and high carbon steel wire rod commonly known as hard wire. Wire rods are mainly used for drawing billets, and can be used directly as building materials and machined into mechanical parts. Stainless steel wire rod is used for making stainless steel wire, stainless steel spring steel wire, stainless steel wire and stainless steel wire rope. With the development of production technology, square has appeared,
Q:What is a wire rod?
With the development of production technology, there have been square, 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: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: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:Is there any difference between the steel bar and the wire rod?
The straight thread steel is divided into three grades, steel material is HRB400, each specification price is: 12-14mm:3270 yuan, 16mm:3220 yuan, 18mm:3140 yuan, 20-32mm:3110 yuan, 36-40mm:3650 yuan. 8-10mm (rolled thread steel): 3210 yuan
Q:Cold drawing with lurkin whether it is the same product, how to use the difference
Cold drawing materials used more, testing standards of cold drawing are also different. Cold drawing of high strength, can be used in many aspects, for much is prestressed reinforcement. Do not ask for plasticity, only the strength of the occasion, you can use such steel.
Q:What is a cold drawn steel wire? What does it usually do?
Cold drawn low carbon steel wire used for prestressed concrete structures, such as beam, hollow floor, small poles, and rural construction of the purlin and door and window frames etc..

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