Energy-efficient, economical and safe
SCHWING has over 40 years of experience in the engineering, manufacturing and operation of heat treatment plants based on fluidized bed technology. With this especially energy-efficient, safe as well as time, personnel and space-saving heat treatment process the metal component is immersed in a retort, which is filled with air or inert gas-fluidized aluminum oxide powder.
The benefits of this process are its superb heat transfer capabilities and temperature uniformity, the quick to execute atmosphere exchanges and, especially, the extremely short process times. Partial heat treatment as well as quick heating for subsequent hot-shaping can be realized without problems. In addition, systems are also available as a quenching bath for gentle and defined quenching.
SCHWING offers compact, safe and energy-efficient fluidized bed systems for innovative, flexible heat treatment processes with temperatures from 200 to 1050 °C and chamber volumes up to 40 m3. The safety and environmental protection of the systems and the quality of the products treated represent the outstanding features of this technology.
Topics overview
Technical basics
The functioning principle of the fluidized bed heat treatment systems from SCHWING is based on the patented SCHWING fluidized bed technology, where fine-grain aluminum oxide is fluidized with air or inert gas in a process chamber. The fluidized bed thus generated conducts heat extremely well and because of its mass possesses an enormous heat capacity.
SCHWING heat treatment plants are heated indirectly via electric heaters or gas burners and can be used over a large temperature range from room temperature to 1050 °C with top precision. Metal tools or components can be easily immersed in the fluidized bed, and in the shortest amount of time they can be
- preheated,
- annealed,
- nitrided,
- nitrocarburated,
- tempered or
- quenched with the desired atmosphere and temperature.
Interruptions, change-overs or changes of the treatment process and the atmosphere, for example, from thermo-chemical to inert, are possible at any time and within only two to three minutes.
The great temperature accuracy of the heat treatment systems from SCHWING ensures the non-warping treatment of the batches introduced. The quick and uniform heating of the system makes stand-by heating obsolete. The facilities operate completely without waste and upon request they are equipped with a flare unit.
