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Slab detection inside a reheating furnace

Detection form the above is difficult due to the presence of water and heavy steam formation. Spurious triggering was caused, which induced alignment errors. Infrared light at longer wavelength. High functional reserve : 1500meters. Easy alignment using 2 LED

Home  Case Studies Exit slab detection inside reheating furnace

Exit slab detection inside reheating furnace

Home    Case Studies    Pilger mill in tube rolling mills – hot and cold pipe detection

Pilger mill in tube rolling mills - hot and cold pipe detection

Reliable slab detection in extremely high temperature

  • Higher functional reserve of 1500 m
  • Robust stainless-steel housing
  • Protective tube for water and heavy steam
  • Easy alignment using 2 LEDs

Challenges

  • Detection form the above is difficult due to the presence of water and heavy steam formation.
  • Spurious triggering was caused, which induced alignment errors.
  • Water cooling was ineffective.

Solution​

  • Proxitron Light barriers were installed for the slab detection, in compact version. The advantage are as follows:-
    • Infrared light at longer wavelength
    • High functional reserve : 1500meters
    • Easy alignment using 2 LED
    • Double walled water cooling (200 °C)
    • Stainless steel housing
    • Inbuilt cable protection
    • Additional high temperature glass (290C) window easily replaceable to save the optic damage from flames, high temperature with water/moisture

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Other Solutions in Hot Rolling Mills – Reheating Furnace