R&D, design, production and quality control consolidated with many years of outstanding experience. You can find our products everywhere heat treatment takes place.
The furnaces of the model series AK with useful chamber size 30 – 600 liters as well as KK-U with useful chamber size 40 - 350 liters with max. temperatures of 950 °C are equipped with a strong circulation blower. Due to the circulation blower a fast warming a uniform temperature distribution is reached. AK and KK-U furnaces of LHT are used for annealing, tempering and glowing. Special sizes up to several cubic meters of useful chamber are possible. Additive Manufacturing (Rapid Prototyping, Rapid Tooling, 3D printing): Especially smaller sizes like AK 30 and AK 40 are used for annealing of additive manufactured parts by 3-D printers. The optional gas purging and housing of the outer insulation layers enable an extensive elimination of a scaling.
For sensitive materials the annealing and tempering is carried out in protective gas furnaces.
Therefore LHT protective gas furnaces of the model series VMK-S, useful chamber 2,6 – 15 liters and KS-S, useful chamber 70 – 460 liters are suitable. In both model series you can work up to temperatures above 1050 °C with protective gas. Mainly it is held under forming gas with hydrogen content < 5 % and with oxidation-sensitive building components with 100 % hydrogen or cracked gas. For latter the furnaces will be equipped with standard options gassing unit, burning-off device and safety package.
The optimization of production lines it is often necessary to work in continuous furnaces. Linn manufactures therefore small and medium size continuous belt furnaces up to 1150 °C.
Pusher type furnace, Lehr, Graphite-Insulation, Tmax 2500 °C, 440 kW
Chamber furnace, insulation made of ASW, 3-zone, gas tight muffle, Tmax 1200 °C, 245 l, 58 KW
Clean room chamber furnace, gastight, Tmax 260 °C, 64 l, 5kW
Rotary hearth furnace, 2 decks, Tmax 1100°C, brick insulation, 1 m³
Cold wall furnace with metallic heater and metallic shielding insulation package, gas and vacuum tight, Tmax 1800 °C, 75 l, 80 kW
Chamber furnace, brick and ASW insulation, cylindrical muffle, gas and vacuumtight, Ø 1000 mm, heated length 1050 mm, Tmax 1100 °C, 130 kW
Chamber furnace, Brick and ASW/PCW insulation, gastight muffle, Tmax 1150 °C, 245 l, 46 kW
Roller hearth continuous furnace, brick and alumo-silicat insulation, Tmax 1350 °C, 48 kW, 260 l
Bell type furnace, stone and ASW insulation, Tmax 1300 °C, 200 kW, 3200 l
Shuttle kiln, brick and ASW insulation, Tmax 900 °C, 160 kW, 3000 l
Calcination / sintering furnace with environmental control Other possible areas of use could be annealing, ashing, boriding, brazing, bright annealing, carburizing, debinding, dewaxing, heat treatment, nitriding, nitrocarborizing, reduction, soft soldering, surface coating, tempering
Annealing furnace with hydrogen atmosphere Other possible areas of use could be annealing, ashing, boriding, brazing, bright annealing, carburizing, debinding, dewaxing, heat treatment, nitriding, nitrocarborizing, reduction, soft soldering, surface coating, tempering
High frequency generator, electron tube type, 300-800 kHz, 100 kW