A Presentation on Sms-2

8/22/2019 A Presentation on Sms-2

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By Name:- Rajesh Kumar PatelRoll no:-3203809035


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STEEL :- Steel is not a specific product. It is essentially a

malleable alloy of iron and one or more elements like

carbon, chromium, Silicon, vanadium, etc. Steel making is a refining or oxidation processwith the exception of reducing condition being

specifically required to eliminate sulphur.

INTRODUCTION


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FACI L I TIES AT SMS-I I (JSPL)

ANNUAL CAPACITY 2.0 MTELECTRIC ARC FURNACE 02 NO.LADLE REFINING FURNACE 03 NO.VACCUM DEGASSER 01 NO.RH DEGASSER 01 NO.CONTINOUS CASTER 03 NO.


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Electri c Arc Furnace (EAF)

Electric Arc Furnace (EAF) is a steel making furnace,in which steel scrap is heated and melted by heat ofelectric arcs striking between the furnace electrodes

and the metal bath.Three-phase AC Electric Arc Furnaces with

graphite eiectrodes are commonly used in steelmaking.


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Structure of an Electric Arc Furnace


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MAKE SMS DEMAGCAPACITY 100 MTTRANSFORMER RATING 100 MVAELECTRODE DIAMETER 600 mmNo. OF VLB (For oxygen Lancing) 4FURNACE LINING BRICKS Magnesia Carbon

BricksTAP HOLE EBT TYPE

ELECRIC ARC FURNACESALIENT FEATURES


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Ladle refining furnace (LRF)

Mainly this comes under the secondary steel making

process. And as the name suggest In this furnace the

ref inement of the l iquidous steel is done, which is

brought from the Electric arc furnace.The liquidous steel which we obtain after

decarbur ization is used as input for the LRF. I t also

plays important role for deciding the grade of the steel.


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Schematic Diagram to Show LRF


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SALIENT FEATURES:- Ladle Refining FurnaceNo. of LRF : 3Make : SMS DEMAGCapacity : 100 T eachTransformer Rating : 18 MVA


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Importance Of LRF:Its main function is reducing impurities. This zone

is usually used to reduce the sulphur presence in the hot

metal. Sulphur presence is controlled between 0.2 0.4. Its

excess presence leads to the hot shortness which increase

the difficulty during the hot rolling process.Afterwards from LRF the refined hot metal is passed into

degasifier zone to remove the presence of gas.This is mainly done by these two processes1). Vaccum Degasser

2). RH- Degasser


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After refinement hot molten steel is brought in caster

section where the desired shape and size is provided. Casterwhich is used for casting is also known as continuous castingmachine.

There is mainly three types caster which is usedCOMBI CASTERBILLET CASTERSLAB CASTER


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COMBI CASTER

The mould in combicaster can be changed as per the

requirement to produce the various products. There are totalof 4 mould used for production of products. There are

various,shapes and sizes.

It is provided, with mould oscillator, to oscillate the system.

cooling bed cylinder. It is made, of copper plate.

This section is mainly responsible for the tonnage production

of the bloom, beam blank and round bars. This is none other

than the combicaster at Jspl.

Mould of the caster:


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Features of Combi Caster: No. of strands : 04 Supplier : VAI Radius : 12000 mm Machine speed

Speed range : 0 to 2.5 m/min Mould length : 800 mm Dummy bar system : Chain type dummy bar

(Bottom feeding) Type of mould : Curved mould with Cu plates

for beam blank and Blooms,Cu tube for rounds.

Cut length : 4.5 to 12 mtrs


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B il let Caster

SQUARE(Side in mm) ROUND(dia in mm)130 142150 162165 180200 200220

The Bil let Caster here at JSPL , Raigarh, is a 6 strand

con t inuous cast ing machine capable of producing b i l lets of

both round and square cross sect ion of var ious cross

sect ion , detai ls of w hich is given below.


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Features o f B i l let Caster:No of Strands : 06Radius : 9000 mmMode of straightening : Continuous

Machine speed : Speed range = 0 to 5 m/minRestranding speed = 3.5 m/min

Length from meniscus : 27.1 meterIn mould to torch cutter

Mould length : 800 mm(Rounds)1000 mm (Squares)

Metallurgical Length : 27.1 meter

Dummy bar system : Rigid type dummy barMould level control : Co60 source with stopper rod

ControlCut Length : 9 to 12 meterType of mould : Curved tublar Cu mould


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Slab caster:Slab c aster is an important func t ional part in any of the steel industry. It is

the place where the ho t, molten steel is bro ugh t with the help of ladle and

poured into tundish , which s lowly regulates the steel into the mould and

provided w i th the in i t ia l suppor t o f the dummy bar the required shape and

size of the slab is ach ieved.The requ ired process f lowshet for slab.

Sections of a slab caster


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These are the major portions of the slab caster unit.

Diagram of the cont inuo us c aster produc ing slab.


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Features o f s lab Caster:No of Strands : 01Supplier : SMS DEMAGRadius : 12000 mmMode of straightening : Single point

Machine speed : Speed range = 0 to 2 m/minRestranding speed = 1.2 m/min

Mould length : 700 mmMetallurgical Length : 17.3 meterDummy bar system : Chain type dummy barMould level control : Co60 source with stopper rod

ControlCut Length : 3.5 to 9 meterType of mould : Curved mould with Cu mould


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SEMI PRODUCTS OF SMS-II


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ThankYou

A Presentation on Sms-2

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