1. HPH® Bell-type Annealing Furnaces for Wire
  2. HPH® Bell-type Annealing Furnaces for Wire
  3. HPH® Bell-type Annealing Furnaces for Wire

HPH® Bell-type Annealing Furnaces for Wire

LOI Thermprocess, with its predecessors Matthias Ludwig and Nassheuer, has been building bell-type annealing plants for more than 60 years. Throughout the world, more than 8500 LOI annealing bases have been installed. About 5000 of these bases operate with HNx controlled atmospheres. More than 3500 bases use HPH® annealing technology, with a proven atmosphere of pure hydrogen.

  • Value for Money

    Value for Money

    • Solid annealing equipment design
    • Low operational costs
  • Efficiency


    • Excellent temperature uniformity
    • Very uniform mechanical properties of the annealed wire
    • High convective heat transfer
    • High efficient burners
    • Individual recuperators
  • Safety


    • TÜV proven safety strategy
    • Sophisticated process control
    • O2 concentration monitoring
  • Service


    • Long service life
    • Sturdy cast diffusor system
  • Reference


    • > 60 years of experience in Bell-type Annealing
    • > 8,500 annealing bases worldwide (>3,500 HPH®)
  • Environment


    • Selection of alternative cooling systems
  • Digitalization


    • Fully automated control system
    • Various software modules for optimization
  • Technical Excellence

    Technical Excellence

    • World's first fully automated BAF plant
    • HPH®-Flameless combustion technology

Wire and Rods