Forged Aluminum Crystalizer For Billet Casting Cooling Device

Base Material Specifications

• Primary material: Forged deformed aluminum alloy substrates
• Casting aluminum alloy billets are strictly prohibited
• Material characteristics: Dense structure, free of loose pores, resistant to thermal alternating deformation
• Long-term high-temperature water cooling resistance without swelling or deformation
• Alternative option: Copper crystallizers available with better thermal conductivity (higher cost)

Quality Verification: Manufacturer must provide material warranty certificate. Substrate must be free of sand holes, pores, or cracks.

Machining Precision & Taper Design

• High precision internal roundness and coaxiality with strict dimensional tolerances
• Optimal inner cavity taper compensates for thermal expansion and prevents rod jamming
• Eliminates scratching of casting rod surface
• Smooth installation groove for graphite ring with no step misalignment after assembly

Proper alignment prevents surface scratches and scars on aluminum rods.

Water Cooling System & Sealing

• Evenly distributed cooling water channels with neatly arranged spray holes
• Consistent circumferential cooling intensity prevents cracks, bamboo knots, and segregation nodules
• Full weld seams without virtual welding in water chamber
• Mandatory water pressure testing before factory release
• Properly processed sealing groove with heat-resistant silicone rubber sealing ring

Factory Acceptance: Manufacturer must provide water pressure test records.

Graphite Ring Quality

Critical component affecting finished product quality:

• High-purity fine particle graphite selection
• Excellent self-lubricating properties and high thermal stability
• Poor quality graphite with insufficient density causes slagging and edge breakage
• Prevents slag inclusion and scratches on aluminum bar surfaces

Operational Performance & Compatibility

• Clear distinction between hot top and ordinary crystallizer types
• Precise matching to casting rod diameter and casting speed requirements
• Specific alloy series compatibility (6 series/7 series have different cooling and taper requirements)

Performance Indicators: Produces aluminum rods with smooth surfaces, minimal cold insulation, reduced tensile cracking and bamboo joints. Minimal body deformation under hot conditions with extended lifespan.

Quality Verification Documentation

Required factory verification data:

• Substrate material report
• Hard oxide film thickness testing report
• Water pressure test records

Comprehensive quality assessment beyond visual inspection is essential.