Steel Billet Produced by Big Blast Furnace

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Tianjin
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1000 m.t.
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100000 m.t./month

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Steel Billet Produced by Big Blast Furnace

 

1.Structure of  Steel Billet Produced by Big Blast Furnace

Steel Billet Produced by Big Blast Furnace  Billet section of square, round, flat, rectangular and abnormity, etc Several, mainly related to shape of rolled products. Simple rolled section steel, choose cross section of square billet or rectangular billet. rolling The sector products such as flat steel, Angle steel, select the rectangular billet or slab. Had better profiled billet when production beams, channels, and in rolling process Lines and improve the yield. The raw material of round billet is the production of seamless tube. 


2.Main Features of Steel Billet Produced by Big Blast Furnace

Steel Billet Manufactured by Blast Furnace without Boron section size should meet the requirements of rolling deformation and finished product quality, but also roll strength and biting condition of restrictions. General steel Billet section height H. And the roll diameter D The ratio of the ( namely H/D) Should be less than or equal to zero 0.5 . Length of steel billet by finishing temperature, Rolling time and the length of the product Or times ruler. When heated too long accident prone to bump the furnace wall of steel, too short, furnace bottom utilization rate is not high, influence the heating furnace production. For the production Choose a variety of steel and steel billet, should consider the affinities of billet, as far as possible in order to improve the productivity of the roughing mill, simplify the stock management of workshop.

 

3.  Steel Billet Produced by Big Blast Furnace Images

 

 

 

Steel Billet Produced by Big Blast Furnace

Steel Billet Produced by Big Blast Furnace

 

 

 

 

4.  Steel Billet Produced by Big Blast Furnace Specification

Steel Billet Manufactured by Blast Furnace without Boron rolled steel, after processing can be used for mechanical parts, forging parts, processing all kinds of steel, steel Q345B channel steel, wire rod is the role of the billet. Steel billet is used in the production of semi-finished products, generally cannot be used directly for the society. Steel billets and steel are strictly divided into standard, cannot decide to whether the business enterprise of the final product, and according to unified standards to perform the whole society. Typically, billet and the steel is relatively easy to distinguish, but for some steel billet, and have the same specification and same steel purposes (such as rolling tube billet), whether can be used for other industries, whether through steel processing process, whether through a finished product rolling mill processing to distinguish

 

The classification of the Bloom Mainly from the shape is divided into two kinds: Slab: cross section width and height of the ratio of the larger, mainly used for rolling plate. Bloom: equal cross section width and height, or a huge difference, mainly used for rolling steel, wire rod.

Bloom material standard The thickness range: 150-240 - mm + / - 5 mm The width of the range: 880-1530 - mm + / - 20 mm Length range: 3700-10000 - mm + / - 500 - mm Cross-sectional size: 64 * 64 ; 82 * 82 ; 98 * 98 ; 124 * 124 ; 120 * 150 ; 152 * 164 ; 152 * 170 mm Length: 9000 mm The section of tolerance: Bloom: 1.0 + / - 2.0-1.0 + / - 1.0 mm The slab width: + / - 2.0 MM ; Thickness: + / - 3.0 MM

 

 

 

5.FAQ of  Steel Billet Produced by Big Blast Furnace

 

We have organized several common questions for our clients,may help you sincerely: 

 

①How is the standard you can meet?

For the chemical composition, according to the Chinese standard of  GB700-88, and the section size according to the standard of YB2011-83,

 

②How is the chemical standard?

                                                                         2 
C%
Mn%
Si% S% P% Q215
A 0.09~0.15 0.25~0.55 ≤0.30 ≤0.050 ≤0.045 B 0.09~0.15 0.25~0.55 ≤0.30 ≤0.045 ≤0.045 Q235
A
0.14~0.22 0.30~0.65 ≤0.30 ≤0.050 ≤0.045 B 0.12~0.20 0.30~0.70 ≤0.30 ≤0.045 ≤0.045 C ≤0.18 0.35~0.80 ≤0.30 ≤0.040 ≤0.040 D
≤0.17
0.35~0.80
≤0.30
≤0.035
≤0.035

 

③How is the packaging and delivery?

Exporting Package with the steel material cover and the delivery term is based on the project.

 

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Q:What is the billet price in China today?
In the short term is still the main shock, the domestic price rise compared to the previous 10 yuan / ton, the price is not the same in each region, so you still have to carefully check the price, from the upstream iron ore, domestic ore prices stabilize, without much change, with the real estate back to temperature.
Q:The form of carbon in carbon steels
The solubility of carbon content when the iron carbon alloy than in the iron when the excess carbon can be in the form of carbide iron or elemental state (graphite) in alloy, which can form a series of carbide, Fe3C (cementite, 6.69%C) is a metastable phase, it is a compound complex structure gap. Graphite is a stable phase of iron carbon alloy with simple six - party structure. Fe3C has the potential to break down into iron and graphite stable phases, but the process is extremely slow at room temperature.
Q:How are the billets classified?
The same type of steel, such as low carbon steel, the grade and composition design, but also look at the performance, therefore, a steel production process due to the abnormal quality, by the high grade and low grade sentenced to drop, but sales loss.......
Q:What about carbon 4 and carbon 5?
Carbon four is butane, which is made up of four carbon, divided into n-butane and isobutane.Carbon five is pentane, composed of five carbon, divided into pentane, isoamyl, and new pentane.A product of petroleum refining, usually consisting of alkanes with a greater number of carbon atoms.
Q:20 what is the difference between manganese silicon steel billet and Q235 billet?
In brief, the ingredients are different and the uses are different.
Q:How do steel billets come out?
Two, pig iron and scrap steel1, smelting equipmentA, BOF: top and bottom blowing, blowing, now is widely used in pure oxygen top blown converterB, open hearth:C, electric steelmaking:
Q:Difference between billet, slab and billet
Production process of billet is through three methods: one is through the production of steelmaking and continuous casting equipment system, the molten steel is directly cast into the billet; two of steelmaking production systems of steel ingot or billet by rolling system of steel rolling equipment processing semi-finished products; three is the production of steelmaking system by forging semi-finished steel ingot the processing equipment. Market trends 1, domestic crude steel production remains high, although the domestic steel market has been relatively sluggish in recent times, and steel losses are more, but this does not seem to affect the enthusiasm of steel production. According to the China Steel Association statistics show that: in early April, the daily output of crude steel in key enterprises in China was 1 million 697 thousand and 300 tons, and the average daily output of crude steel in China was estimated at 2 million 123 thousand and 900 tons. And in mid April, crude steel daily output of ten days, although there has been a drop back, but still at a high level. According to statistics, in mid April, the average daily output of crude steel in key enterprises nationwide was 1 million 689 thousand and 100 tons, and the average daily output of crude steel in China was estimated at 2 million 115 thousand and 800 tons. Such a large production and sluggish demand in stark contrast, which is a drag on steel prices down one of the important factors.
Q:I would like to ask what products need billet,
The main mold manufacturers, equipment manufacturers, military departments, measuring and cutting tools manufacturers.
Q:Can the production of continuous casting billet be damaged by using intermediate frequency electric furnace?
If there are no other major facts of harm, it seems that there is no such mandatory legal provisions to bear criminal responsibility. Mandatory closing and fines at most.
Q:If the casting speed is not steady, what will happen to the billet?
First of all, the probability of slag circle, dimple, crack and blowhole on the surface of the billet will increase, and the slag inclusion in the slag will increase, which will affect the internal and surface quality of the slab.

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