Hot Rolling Mill Cooling Bed

Uniform Cooling Solutions | KWM Machinery

KWM Machinery’s Hot Rolling Mill Cooling Bed ensures controlled cooling of rebar, structural sections, and plates with temperature uniformity ≤±15°C, optimizing metallurgical properties for ASTM A36, EN 10025, and API 5L grade steel. Our systems achieve 30% faster cooling rates than conventional chain transfer beds, reducing scaling loss to <0.8%.

Hot Rolling Mill Cooling BedComposition

The cooling bed is composed of a mechanical transmission system, a water cooling system, a cooling bed work surface, and a fixed bracket. Cooling bed is an important auxiliary equipment in steel rolling production. The function of the cooling bed is to cool the rolled pieces above 800°C to below 150-100°C, and at the same time make the rolled pieces run in a predetermined direction, and ensure that the rolled pieces are not bent during transportation. Due to the wide range of shapes of rolled products, the types of cooling beds in the rolling workshop are varied.

Key Features

1. Advanced Cooling Control

   • Stepwise Cooling Zones: 3-8 adjustable stages (50-800°C)

   • Air/Water mist hybrid cooling (0.5-5L/m²·s flow precision)

   • Automated temperature mapping via infrared sensors

2. High-Durability Design

   • H13 heat-resistant alloy walking beams (1,200°C rated)

   • Modular construction for 12-48m bed lengths

   • 25% lower maintenance cost vs. roller tables

3. Smart Integration

   • IoT-enabled cooling rate optimization

   • Synchronization with rolling mill PLCs (Siemens/Allen-Bradley)

Technical Advantages

• Material Integrity Protection:
  ∙ Phase transformation control for pearlite/ferrite balance
  ∙ Residual stress reduction to <150MPa (ASTM E837)

• Operational Efficiency:
  ∙ 200-400 TPH throughput capacity
  ∙ 360° oxidization prevention with nitrogen shrouding

Applications

Industry	Product Types	Standards
Construction Steel	H-beams, channels, angles	GB/T 11263, JIS G3192
Energy Pipelines	API 5L X60-X80 line pipes	ISO 3183
Automotive	Wheel rim flats, chassis plates	SAE J1392

Certifications & Quality

• CE & ISO 9001 Certified cooling systems

• Performance Validation:
  ∙ 48hr continuous load testing
  ∙ Post-cooling hardness variance <5% (ISO 6506)

FAQ

Q: What’s the maximum cooling capacity?
A: Customizable up to 500 TPH with multi-zone intensification.

Q: Can existing cooling beds be retrofitted?
A: Yes – we upgrade control systems and walking beam assemblies.

Q: How to reduce scale formation?
A: Our nitrogen shrouding option cuts scaling by 60%.