SeAH Besteel |

Steelmaking Process

ขั้นตอนการผลิตเหล็ก

01 Iron scrap

Main material for electric furnace steel manufacture
Scrap metal discarded from the production or process and after the end of lifespan of finished steel products

02 EAF (Electric Arc Furnace)

Process of melting solid iron scrap into liquid metallic strain using electrical and chemical energy
Electrical energy: thermal energy of Arc occurring between electrode and iron scrap
Chemical energy: thermal energy occurring between oxygen and metal element

03 LHF (Ladle Heating Furnace)

Metallic stain produced in the electric furnace received in a vessel called ladle
Rise in temperature using electric energy
Adjust chemical elements through alloy metal insertion
Process that reduces refinement through making optimum slag

04 Vacuum degassing vessel (Vacuum Degassing)

Process of degassing hydrogen, nitrogen, oxygen and etc. in metallic stain by exposing finished clean metallic stain to low vacuum state under 0.8m bar lower than atmospheric pressure
VD: Equipment that exposes ladle with metallic stain into a vacuum state by putting it in equipment in a tank form
RH: Equipment that exposes metallic stain in ladle to a vacuum state by reverting it into a particular vessel

05 CC (Continuous Casting)

Equipment that produce bloom/billet continuously by infusing melted steel in a certain form of mold
Clean steel and high alloy steel production through M-EMS/F-EMS and dynamic soft reduction equipment

Rolling Process

กระบวนการรีดเหล็ก

01 Walking Beam Furnace

Process of heating blood produced by soft mold uniformly (at approximately 1200 degrees Celsius) to facilitate plastic deformation
Characteristics :
Chemical impurity decrease in the mold structure from spread caused by high-temperature heating
During rolling, air bladder or porosity in the steel lump disappears and coarse grains refined

02 Cogging Mill (Hot rolling mill)

Plastic deformation process which desired shape and standard are formed by reversibly rolling the heated bloom with a pair of roll
Characteristics :
Destroys the big mold structure and improves the crystal structure of material to provide excellent mechanical and physical qualities

03 Hot Scarfing

Process of removing harmful defects (cracks, shells, superficially added substances) on the surface of material that does not extinguish in the course of heating and blooming
Characteristics :
Removing decarburized layer generated during the job of heating from the surface
Applicable to high carbon steel and alloy steel that is incapable of cold scarfing

04 Large-Bar Mill

Process of halfway rolling and manufacturing the shape and standard of final product after hot rolling
Characteristics : Production of RB105 to 250 products and manufacture the shape of halfway rolling

05 Vertical-Horizontal Mill #1

Rolling process for manufacturing the final shape and standard of product after hot rolling
Characteristics : Production of RB75-1165.1, SQ83-160 products

06 Vertical-Horizontal Mill #2

Rolling process for manufacturing the final shape and standard of product after hot rolling
Characteristics : Production of RB75-1165.1, SQ83-160 products

07 Cooling Bed

Inner quality improved and straightness secured by revolving and gradually cooling a rolled product

Correction Process

กระบวนการสุดท้าย

01 Straightening&Deburring

Straightening: equipment that secure straightness by passing a round bar through 2 rolls up and down
Deburring: equipment that removes the burr at both ends of product by fitting cutting tip with bite holder

02 UT (Ultrasonic wheel probe)

A type of NDP (non destructive testing), an equipment for discerning defects inside a product using ultrasonic waves

03 MT (Magnetic particle testing unit)

A type of NDP (non destructive testing) equipment that checks defects of the product surface by magnetizing and scattering fluorescent magnetic particles on the product

04 Grinding M/C (Lapping tool)

An equipment that removes the identified and marked surface defects via MT with grinding wheel

05 VI (Testing with naked eyes)

Final testing on the product (dimension, length, straightness, surface, etc.)

06 Bundling (banding)

An equipment for bundling products in certain units and weights

Create a website for free
By SoGoodWeb.com