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Steelmaking Process

The steelmaking process involves the production of square billet of various lengths. Iron scrap is melted, impurities are removed, and the chemical composition is adjusted to satisfy the customer's requirements. YK Steel produces 930,000 tons of billets annually.

Steelmaking Process

The steelmaking process involves the production of square billet of various lengths. Iron scrap is melted, impurities are removed, and the chemical composition is adjusted to satisfy the customer's requirements. YK Steel produces 930,000 tons of billets annually.

Step 1
Iron Scrap Charging

Iron scrap is commonly referred to as 'scrap metal.' It’s an important resource in the steelmaking process, accounting for more than 70% of the steel manufacturing cost. YK Steel is committed to the stable supply and management of iron scrap and undergoes a strict inspection process from receipt to charging to produce high-quality products.

Step 2
Electric Arc Furnace Process (Melting)

An electric arc furnace is a method of melting iron scrap into molten metal, commonly referred to as 'Melting.' Electric arc furnaces melt iron scrap using two methods: an arc furnace that utilizes arc heat and an induction furnace that uses the resistance heat of induced current. Arc furnaces are classified into alternating current (AC) electric arc furnaces and direct current (DC) electric arc furnaces. Our company uses alternating current (AC) electric arc furnaces to melt the charged iron scraps. During this process, impurities are separated, and molten steel is produced.

Step 3
Refining

The refining furnace increases the temperature of the molten steel transferred from the electric arc furnace and removes the 5 major components of iron: carbon (C), manganese (Mn), silicon (Si), phosphorus (P), and sulfur (S), according to regulations. It plays a coordinating role in this process. The composition and temperature of molten steel are important factors in determining the quality and shape of the final product. YK Steel strictly tests the chemical components in molten steel and maintains its temperature within a constant range of 1550 to 1600°C, improving the stability and productivity of Continuous Casting, a post-processing step.

Step 4
Continuous Casting

This is the process of turning refined molten steel into billets. Molten steel, which remains in a liquid state until the refining process, solidifies through the continuous casting process. The semi-finished billets produced in this way are then produced into various products through a range of post-processing operations.

Step 5
Transfer

Billets produced from the casting machine are supplied to the next stage using an automatic transfer device.

Step 1
Iron Scrap Charging

Iron scrap is commonly referred to as 'scrap metal.' It’s an important resource in the steelmaking process, accounting for more than 70% of the steel manufacturing cost. YK Steel is committed to the stable supply and management of iron scrap and undergoes a strict inspection process from receipt to charging to produce high-quality products. 

Step 2
Electric Arc Furnace Process
(Melting)

An electric arc furnace is a method of melting iron scrap into molten metal, commonly referred to as 'Melting.' Electric arc furnace melt iron scrap using two methods: an arc furnace that utilizes arc heat and an induction furnace that uses the resistance heat of induced current. Arc furnaces are classified into alternating current (AC) electric arc furnaces and direct current (DC) electric arc furnaces. Our company uses alternating current (AC) electric arc furnaces to melt the charged iron scraps. During this process, impurities are separated, and molten steel is produced. 

Step 3
Refining

The refining furnace increases the temperature of the molten steel transferred from the electric arc furnace and removes the 5 major components of iron: carbon (C), manganese (Mn), silicon (Si), phosphorus (P), and sulfur (S), according to regulations. It plays a coordinating role in this process. The composition and temperature of molten steel are important factors in determining the quality and shape of the final product. YK Steel strictly tests the chemical components in molten steel and maintains its temperature within a constant range of 1550 to 1600°C, improving the stability and productivity of Continuous Casting, a post-processing step. 

Step 4
Continuous Casting

This is the process of turning refined molten steel into billets. Molten steel, which remains in a liquid state until the refining process, solidifies through the continuous casting process. The semi-finished billets produced in this way are then produced into various products through a range of post-processing operations. 

Step 5
Transfer

Billets produced from the casting machine are supplied to the next stage using an automatic transfer device. 

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About

Technology

Sustainability

Recruit

IR

Connect

©YK Steel. All rights reserved.