A Presentation On Sms-2 3q4h4x

By –Name:- Rajesh Kumar Patel Roll no:- 3203809035

INTRODUCTION 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 process with the exception of reducing condition being specifically required to eliminate sulphur.

FACILITIES AT SMS-II (JSPL)

•ANNUAL CAPACITY •ELECTRIC ARC FURNACE •LADLE REFINING FURNACE •VACCUM DEGASSER •RH DEGASSER •CONTINOUS CASTER

2.0 MT 02 NO. 03 NO. 01 NO. 01 NO. 03 NO.

Electric Arc Furnace (EAF) Electric Arc Furnace (EAF) is a steel making furnace, in which steel scrap is heated and melted by heat of electric arcs striking between the furnace electrodes and the metal bath. Three-phase AC Electric Arc Furnaces with graphite eiectrodes are commonly used in steel making.

Structure of an Electric Arc Furnace

ELECRIC ARC FURNACE •SALIENT FEATURES MAKE

SMS DEMAG

CAPACITY

100 MT

TRANSFORMER RATING

100 MVA

ELECTRODE DIAMETER

600 mm

No. OF VLB (For oxygen Lancing) 4 FURNACE LINING BRICKS

Magnesia Carbon Bricks

TAP HOLE

EBT TYPE

Ladle refining furnace (LRF) – Mainly this comes under the secondary steel making process. And as the name suggest – “ In this furnace the refinement of the liquidous steel is done, which is brought from the Electric arc furnace.” The liquidous steel which we obtain after decarburization is used as input for the LRF. It also plays important role for deciding the grade of the steel.

Schematic Diagram to Show LRF

SALIENT FEATURES:- Ladle Refining Furnace No. of LRF : 3 Make : SMS DEMAG Capacity : 100 T each Transformer Rating : 18 MVA

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 ed into degasifier zone to remove the presence of gas. This is mainly done by these two processes 1). Vaccum Degasser 2). RH- Degasser

•After refinement hot molten steel is brought in caster section where the desired shape and size is provided. Caster which is used for casting is also known as continuous casting machine.

There is mainly three types caster which is used COMBI CASTER BILLET CASTER SLAB CASTER

COMBI CASTER 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. The mould in combicaster can be changed as per the requirement to produce the various products. There are total of 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.

Mould of the caster:

Features of Combi Caster:    

No. of strands Supplier Radius Machine speed Speed range  Mould length  Dummy bar system (Bottom feeding)  Type of mould

: : :

04 VAI 12000 mm

: : :

0 to 2.5 m/min 800 mm Chain type dummy bar

:

 Cut length

:

Curved mould with Cu plates for beam blank and Blooms, Cu tube for rounds. 4.5 to 12 mtrs

Billet Caster The Billet Caster here at JSPL, Raigarh, is a 6 strand continuous casting machine capable of producing billets of both round and square cross section of various cross section, details of which is given below.

SQUARE (Side in mm) 130 150 165 200

ROUND (dia in mm) 142 162 180 200 220

Features of Billet Caster: •No of Strands : 06 •Radius : 9000 mm •Mode of straightening : Continuous •Machine speed : Speed range = 0 to 5 m/min Restranding speed = 3.5 m/min •Length from meniscus : 27.1 meter In mould to torch cutter •Mould length : 800 mm(Rounds) 1000 mm (Squares) •Metallurgical Length : 27.1 meter •Dummy bar system : Rigid type dummy bar •Mould level control : Co60 source with stopper rod Control •Cut Length : 9 to 12 meter •Type of mould : Curved tublar Cu mould

Slab caster: Slab caster is an important functional part in any of the steel industry. It is the place where the hot, molten steel is brought with the help of ladle and poured into tundish , which slowly regulates the steel into the mould and provided with the initial of the dummy bar the required shape and size of the slab is achieved.

The required process flowshet for slab.

Sections of a slab caster

These are the major portions of the slab caster unit.

Diagram of the continuous caster producing slab.

 Features of slab Caster: •No of Strands : 01 •Supplier : SMS DEMAG •Radius : 12000 mm •Mode of straightening : Single point •Machine speed : Speed range = 0 to 2 m/min Restranding speed = 1.2 m/min •Mould length : 700 mm •Metallurgical Length •Dummy bar system •Mould level control Control •Cut Length •Type of mould

: 17.3 meter : Chain type dummy bar : Co60 source with stopper rod : 3.5 to 9 meter : Curved mould with Cu mould

SEMI PRODUCTS OF SMS-II

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