I. Core Functions

• Taphole Drilling / Reaming

  • Drills out the worn, deformed, steel-clogged and slag-clogged old taphole channel.

  • Re-machines a standard, smooth and concentric taphole to ensure smooth steel flow.

  • Removes solidified slag, residual steel and agglomerated refractory materials.

• Taphole Sleeve Replacement / Resleeving

  • Breaks and removes worn, cracked or eroded inner taphole sleeves.

  • Accurately installs, positions and compresses new sleeves.

  • Ensures concentricity and tightness without damaging the surrounding mother block.

• Taphole Renewal / Refurbishment

  • Repairs deflected, enlarged and irregular taphole profiles.

  • Restores standard bore diameter, angle and depth.

  • Extends converter lining service life and reduces risks of steel leakage, slag adhesion and steel penetration.

• Remote & Safe Operation

  • Fully hydraulic and radio remote controlled, keeping personnel away from high temperature, splashing and radiation areas.

  • Reduces manual operation risks and improves operational safety.

• Quick Maintenance & Reduced Downtime

  • Integrated workflow: drilling → cleaning → installing new sleeves.

  • Standard operation time: 10–20 minutes per converter.

  • Greatly shortens converter maintenance downtime and improves steel plant productivity.

II. Typical Application Scenarios

1. Routine Maintenance

   • Regular maintenance after dozens to hundreds of tapping heats.

   • Replacement of taphole sleeves when they suffer high-temperature erosion, washout wear or cracking.

   • Maintains stable taphole dimensions, steady steel flow, free of slag adhesion and turbulence.

2. Corrective Repair

   • Repairs deformed, enlarged, deflected tapholes with serious steel adhesion.

   • Resolves poor steel flow, scattered flow, excessive slag carryover and quality issues.

   • Emergency repair when tapholes face risks of steel penetration, leakage or burn-through.

3. Start-up / Relining

   • Positioning, reaming and calibration of newly installed tapholes on newly lined converters.

   • Initial taphole opening for new steel plants and converters after major overhaul.

4. Emergency Repair

   • Rapid response to sudden taphole burn-through, severe steel leakage and abnormal tapping.

   • Quick repair to resume production and avoid prolonged shutdowns.

5. Applicable Converter Types

   • Medium and large converters (BOF) from 60t to 350t.

   • Fixed or mobile operation in steelmaking shops and on converter platforms.

   • Equipped with: hydraulic system, crawler / wheeled mobile chassis, remote control console.