Cored Wire Tube Production Line

The production of cored wire tubes is a high-precision, high-efficiency cold roll forming process. The core challenge lies in ensuring uniform filling, consistent sealing, and continuous stable operation. The entire process integrates automated machinery with advanced control systems to meet the strict requirements of metallurgical refining.

1. Production Process

• 1. Steel Strip Decoiling
     Premium cold-rolled low-carbon steel strips (typically 0.3–0.6 mm thick) are uncoiled and fed into the forming system.

  2. Steel Strip Cleaning (Optional)
     Surface cleaning or degreasing may be applied to enhance bonding and weld quality.

  3. Pre-forming Stage
     The strip is gradually bent into a "U" shape by rollers to prepare for core filling and sealing.

  4. Precise Core Filling
     Pre-blended metallic powders such as Ca, Al, Ti, Si, CaCO₃, or rare earths are dispensed into the U-shaped strip via a precision dosing system.

  5. Tube Forming and Sealing
     The filled strip is progressively formed into a closed tube. Sealing can be achieved through mechanical crimping or welding, ensuring no leakage.

  6. Straightening and Compacting
     Tubes are straightened and compacted to ensure dimensional consistency and core density.

  7. Cut-to-Length
     Tubes are cut into fixed lengths (e.g., 3m, 5m) or left continuous for coiling. Cutting tolerance is controlled within ±1%.

  8. Coiling (if applicable)
     Tubes are coiled into reels for efficient handling, transportation, and on-site feeding.

  9. Quality Inspection and Packaging
     Each batch undergoes visual inspection, weight verification, chemical sampling, and fill uniformity checks before final packaging.

2. Technical Parameters

• Tube Specifications:	Φ9mm, Φ13mm, Φ16mm, Φ20mm (customizable)
  Wall Thickness:	0.3 mm – 0.6 mm
  Filling Ratio:	10%–35% depending on application
  Production Speed:	30–80 m/min (up to 100 m/min under stable operation)
  Coil Weight:	150–500 kg per spool
  Length Tolerance:	±1%

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• 3. Performance Standards After Use

• Cored wire tubes are designed to deliver the following metallurgical performance:

  • Inclusion Control: Inclusions are refined and spheroidized, meeting ASTM E45, DIN 50602, and GB/T 10561 standards

  • Sulfur Content: ≤0.003%, compliant with ultra-low sulfur steel specifications

  • Total Oxygen (T.O): ≤0.0025%, meeting high-purity steel requirements

  • Enhanced steel workability, cutting performance, and fatigue resistance