Sub Entry Nozzle and Shroud | Tundish

Sub Entry Nozzle / Shroud (SEN / SES) is an isostatically pressed refractory tube used for flow of steel from Tundish to Mould.

The primary function of SEN / SES is to prevent re-oxidation of steel between the tundish and the mould. The design of the SEN / SES strongly influence the casting process by modulation of steel flow and thermal charasteristics inside the mould.

Longer casting duration is achieved with special Zirconia containing mixes for the slag zone. Different glaze compositions are available that cover all range preheating and casting conditions. Latest insulation materials like Bio Soluble Ceramic Fiber and Fibre free Insulating Coating for SEN and SES eliminate the risk of exposing our customers to hazardous traditional ceramic fiber.

Different design SEN & SES are available for conventional slab, thin slab, billet, bloom and beam blank casters. Customized SEN designs are offered through flow modelling simulations.

Design options

Cold Start SES for emergency change
Anti-clogging SEN/SES for Aluminium killed steel
Multi – Port SEN for high throughput casting
Reverse tapper SEN for Special Alloy steel casting
Scan Head SEN for without Well Block fixing
Semi Immersion Nozzle (SIN) for Beam Blank casting
Tube Changer SES for high sequence Slab Caster casting
Thin Slab SEN for high throughput casing

Velocity Distribution at Center Plane & Meniscus

Flow Modelling Simulation based design

Steel flow characteristics from tundish to mould is critical to continuous casting process and influence finished steel quality. We offer customized SEN designs using the latest CFD flow modelling techniques that predicts best solution as per casting requirement.

Sub Entry Shroud

For high sequence casting tundishes using Tundish Nozzle or Tundish Slide Gate or Tube Changer systems, the SEN is substituted by replaceable Sub Entry Shroud (SES), that can be changed in hot condition during operation.

Port Design

SEN port design is an important factor that impacts the flow of molten steel inside the mould. Optimized port design help to achieve thermal homogeneity with minimum mould level fluctuation and reduce inclusions. The design of the port is customized through flow modelling simulations to suit casting requirements.

Thin Slab Casting

IFGL offers customised SEN design for Thin Slab Casters. The development of the design involves flow modelling of steel inside the mould.

Iron & Steel

Foundry