Cored Wire Manufacturing Line | ERW Tube Forming Solution

What Is Cored Wire?

Cored wire is a special tubular wire made from low-carbon steel strip, filled with precisely formulated metallurgical powders. During steelmaking and secondary refining, the steel sheath melts in molten steel, releasing the internal powder to perform metallurgical reactions such as desulfurization, deoxidation, alloying, and inclusion modification.

Compared with direct powder addition, cored wire injection provides higher recovery rate, better reaction control, and improved steel cleanliness.
Our cored wire production line is a special-purpose ERW tube forming system designed for stable forming, accurate powder filling, and reliable tube sealing.

Main Applications

Cored wire is widely used in secondary steel refining and metallurgy processes, including:

• Desulfurization in ladle refining

• Deoxidation and oxygen control

• Precise alloy addition

• Inclusion modification and shape control

• Improvement of molten steel cleanliness and stability

Typical application areas include ladle furnace (LF), secondary refining stations, continuous casting preparation, and special steel production.

Common Cored Wire Types

Our production lines are suitable for manufacturing various metallurgical cored wires, such as:

• • Calcium wire (Ca)

• • Calcium silicon wire (CaSi)

• • Aluminum cored wire (Al)

• • Titanium cored wire (Ti)

• • Carbon cored wire

• • Flux and compound alloy cored wire

Different powder formulations can be processed according to customer metallurgical requirements.

Key Product Features & Performance

Our cored wire forming technology ensures:

• Stable tube forming with smooth outer surface

• Accurate and consistent powder filling rate

• Reliable tube closing or high-frequency welding

• Good mechanical strength for long-distance wire feeding

• Uniform powder distribution along the full wire length

• High production stability for continuous operation

These features help end users achieve better metallurgical reaction efficiency and more consistent steel quality.

Typical Technical Parameters

Typical Process Flow

Steel Strip Uncoiling → Strip Guiding & Leveling → U-Forming & Pre-Forming → Automatic Powder Feeding & Filling → Tube Closing & Seam Sealing / HF Welding → Cooling → Precision Sizing → Straightening → Online Inspection → Wire Coiling or Drum Winding

Equipment System Configuration

A complete cored wire production line typically includes:

• Uncoiler and strip accumulator

• Precision roll forming section

• Automatic powder feeding and dosing system

• Tube closing or HF welding unit

• Sizing and straightening section

• Cooling system

• Online inspection and monitoring

• Wire coiler or drum winder

Each system is designed for continuous, stable production and easy operation.

Why Choose Our Cored Wire Production Line

• Specialized design for metallurgical cored wire production

• Proven ERW tube forming technology

• Accurate powder filling and control system

• Reliable sealing and mechanical strength

• Customization for different wire diameters and powders

• Complete technical support and process integration

We provide complete cored wire production solutions, including line design, equipment manufacturing, installation guidance, and process optimization support.