Billet Heater - Type 'EBH'

The medium-frequency walking-beam billet heater 'EBH' is used for the heating of steel billets (ferromagnetic and austenitic qualities) and non-ferrous metals.

The walking beam conveyor, which is driven by a three-phase motor, transports the billets at intervals on water-cooled rails in small steps, i.e. almost continuously through the induction coils, in which the billets are heated to the shaping temperature. Conveying speed and heating capacity are infinitely-variably set to the respective production conditions. The heated billets leave the coil in the desired operating cycle over a fast take-off roller table with a chute or they are removed from the last coil by a robot or by automatic tongs and fed to a defined position before transfer into the forging machine.

 

The advantages at a glance:

  • automatic operation in a specified working sequence
  • high availability
  • low space requirement, compact design
  • fast operating readiness due to short heating-up times, hence less scale layer
  • simple operation
  • reproducible operating results due to the possibility of setting accurate plant data
  • exact temperature control, therefore high dimensional accuracy of forged parts and extremely good tool service lives
  • high efficiency, no energy required during longer operating breaks
  • no heat stress on the operating personnel
  • smoothly adjustable speed of the billet transport
  • extremely low wear and shock-free conveying principle
  • transport and heating of the individual billets without additional resources
  • no adhesion of billets because of the corresponding supplementary equipment on the walking beam system
  • short conversion times to other billet dimensions by means of fast coil changing equipment

Inductive billet heating systems, type EBS

Heating of billets to shaping temperature


The EBS medium-frequency billet heater is used for the heating of steel billets (ferromagnetic and austenitic qualities) and non-ferrous metals. The billets to be heated are cold sheared, broken or sawn. They are placed manually onto the in-line
vibrating trough or they are fed to the heater by an automatic conveyor. The billets are taken over by the driving roller set and conveyed continuously through the induction coil, in which they are heated to the shaping temperature. The heated billets leave the coil in the desired operating cycle over a fast take-off roller table with a chute or they are removed from the last coil by a
robot or by automatic tongs and fed to a defined position before transfer into the forging machine. The supplementary equipment for billet feed, removal and transfer is designed for this heating technology. We also offer advanced solutions based
on robotics. The plant is available in different designs and performance classes, e.g. from 250 - 2000 kW.


The advantages at a glance
- Automatic operation in a specified working sequence
- High availability
- Low space requirement, compact design
- Fast operating readiness due to short heatingup times, hence less scale layer
- Simple operation
- Reproducible operating results due to the possibility of setting accurate plant data
- Exact temperature control, therefore high dimensional accuracy of forged parts and extremely good tool service lives
- High efficiency, no energy required during longer operating breaks
- No heat stress on the operating personnel
- Smoothly adjustable speed of the billet transport
- Simple mechanical conveying principle
- The shortest possible conversion times to other billet dimensions by means of fast coil changing equipment

Bar Heating System - Type 'ESS'

The inductive bar heating system type ESS was specially developed for the forging industry and can be used for various processes, such as for continual bar heating, for fast forge pressing, or hot shearing.

With this system, the bars are fed into theheater by a special inlet driver, and transported on by the subsequent roller track by driven V-rollers. The feed speed near the inductive coils is controlled automaticallyaccording to the required throughput andcontinually monitored. This ensures that theheating power is switched off automaticallyif the speed deviates from the referencespeed.

 

The advantages at a glance:

  • Interconnectable modules according to requirements
  • No de-ionized cooling circuit is necessary
  • Performance factor of cos φ is more than 0.95
  • Robust steel construction suitable for forging
  • Uniform temperature profile, even with 20% of the nominal throughput
  • Temperature adjustment to suit various grades of steel
  • Optimum axial and radial distribution of temperature
  • No overheating whenever the throughput alters
  • Bar pick-up jig for thermoforming elements
  • Reversible direction of transport rollers