Rolls and Water Cooling Systems

Presentation Time : 8 hours

Content :

• Rolls Concept for Rolling Mills
• Types of Rolls
• Common Rolls for Stands with two supported Sides
• Ring Rolls for Stands with two supported Sides
• Rings for Cantilever Stands
• Fabrication Process and Quality of Rolls
• Chemical Composition, Surface Hardness and Thermical Treatment
• Rolls Surface Wear
• Uniform and No Uniform Rolls Surface Wear
• Rolls Life - Maximum and Minimum Diameter
• Roll Table Design and Templates Definition
• Types of Rolling Grooves
• Rolls Machining : CNC System and Mechanical System
• Forces at the Rolls
• Safety Calculation for Rolls Neck
• Safety Calculation at the Center of Grooves
• Rolling Temperature
• Roll Surface Heating during Rolling
• Water Cooling Systems for Rolls
• Thermical Cycles in Rolls Operation
• Thermical Cracks at Rolls
• Types of Water Cooling Systems
• Cooling Variables
• Temperature, Pressure and Water Flow
• Sprays : Quantity, Position and Angle
• Cooling Optimization
• Optimization of Rolls Operation
• Process Quality : Passes and Rolls