Silcarb Recrystallized Limited has successfully designed, fabricated, and commissioned a continuous mesh belt furnace for a German company’s production facility. It is one of the world’s leading manufacturers of high-performance technical ceramics, headquartered in Germany, with production operations across Europe, Asia, and the Americas.
This is a 12-metre long, 200kW continuous electric furnace designed for high-throughput heat treatment of components. The chamber – 900mm wide and 9 metres in length – is structured across six independently controlled zones: a 2500mm pre-heating zone, a 4000mm sintering zone, and a 2500mm post-heating zone. Operating temperature is 900°C, with the system rated to 750°C maximum. Each zone carries its own duplex K-type thermocouple (Silcarb make), feeding into thyristor-controlled power packs with PID and safety controllers. A chartless temperature recorder provides a continuous process log.
The heating elements are Silcarb’s own Alpha-Ultra series – reaction-bonded, high-density silicon carbide, single-piece non-jointed construction with a minimum density of 2.8 g/cc. These were specified and verified at PDI for resistance tolerance within ±15% of nominal, and six spare elements were supplied as part of the package.
The conveyor is a balance compound SS304 wire mesh belt running at 33–75 mm/min, speed-controlled via VFD. The drive system uses rubber-coated driven rollers with an auto-tensioning pinch roller mechanism to maintain consistent belt tension across the full run. The refractory lining is 200mm of ceramic fibre boards and blanket, anchored with SS310 stainless steel anchors.
The control panel – fabricated entirely in-house – houses Siemens/Schneider-grade switchgear, Gefran/Eurotherm PID and thyristor controllers, and a 250 KVA oil-cooled step-down transformer. Every element of the electrical system was designed, wired, and ferrule-numbered by Silcarb before dispatch.
The German company’s production processes demand precise, repeatable thermal profiles – the tolerances on their ceramic components leave no room for temperature non-uniformity or control drift. A furnace for their use has to perform consistently from day one, and continue performing.
The ability to do this as a single-source supplier – designing the furnace, manufacturing the heating elements inside it, building the control system, and then commissioning on site – is what makes Silcarb’s approach different. The element selection, the zone layout, the power architecture, and the control logic are all designed together by the same team. That integration matters when the process has no tolerance for the gaps that appear when subsystems come from different suppliers.
Silcarb has been manufacturing silicon carbide heating elements for over four decades. The furnaces business is a direct extension of that – built around the same materials knowledge, applied at the system level.If you have a continuous heat treatment or sintering requirement and are looking for a technically capable Indian manufacturer, we are glad to discuss it.
Silcarb is an Indian manufacturer specializing in silicon carbide heating elements, kiln furniture, industrial furnaces, advanced technical ceramics, and wear resistant ceramic components. With decades of experience in high-temperature materials engineering, Silcarb supplies industries including mining, mineral processing, aluminium manufacturing, defence, and advanced ceramics.
