AK-model

tmax up to 800 °C

Chamber furnace for annealing, brick and ASW insulation, Tmax 800 °C, 22 - 603 l

Applications:

annealing, curing, drying, heat treatment, oxydation, pre-heating, shrink fitting, stress-relieving, tempering

The most important characteristics

Annealing furnace
Max. temperature up to 800 °C
Insulation with shaped brick made of high quality fiber boards and lightweight refractory bricks on the walls, furnace bottom lined with SiC boards
Air circulation by ventilator in door for better temperature distribution and heat transfer
Short heating up and cooling down cycles
Quality - made in Germany
Easy operation and handling

We make it possible

Linn High Therm is specialized in adapting its products to customer’s requirements. Please let us know if you need any modifications apart from our standard offer. We will do everything to satisfy your wishes.

Options

Temperature controller G800
Serial interface
Temperature program controller
Screen recorder
Gas purging device with sheet cover around furnace brick lining

Product Specifications

Sizes

Model	Liter	Inside dimensions mm (B x T x H)	T. max. °C	Heating power kW
AK-30*	22	240 x 380 x 240	550	5,0
AK-40**	40	340 x 500 x 240	800	9,0
AK-70**	72	400 x 600 x 300	800	12,0
AK-160	160	500 x 800 x 400	800	18,0
AK-315	315	630 x 1000 x 500	800	36,0
AK-600	603	800 x 1300 x 580	800	42,0

*table unit

**also available as table unit

Technical details

Furnace housing

Furnace housing, housing of separate switch box and door consist of a lightweight sheet steel construction. The painting with structural lacquer serves as protection against corrosion. The chosen colours blue/white give a nice appearance to the entire furnace.

Insulation

The furnace chamber is surrounded by shaped stones made of fiber boards and lightweight refractory brick. The furnace bottom is made of an abrasion-proof insert plate made of SiC. The insulation guarantees high thermal power at low energy consumption. Due to fiber insulation, low furnace weight is reached.

Heating

Heating is effected by free radiating Kanthal-A1-heating spirals in the rims of the brick lining. In combination with the insulation, extremely short heating up and cooling down cycles can be reached at low heating power.

Switch and control unit

The switch and control unit is installed in a separate switch box which is tightly connected to the furnace part on the right side.

Temperature controller G400
2 or 3 setpoint controller with PID behaviour
Logic output
One heating ramp – freely programmable velocity / ramp function
Display of actual value (desired value displayed after pressing the button)
Self-optimization prevents overshooting
Separation of control and configuration level (prevents undesired changes)
Alarm signal in case of thermocouple fracture
Timer with turn-on & turn-off delay (dwell time)

Product properties

Product Line:	type series
Operation Mode:	Batch
Construction Types:	Furnace
Designs:	Chamber furnace
Temperature Max (°C):	800
Heatings:	electrical
Heatingmethods:	resistance
Atmospheres:	Air
Applications:	annealing, curing, drying, heat treatment, oxydation, pre-heating, shrink fitting, stress-relieving, tempering

Products- Details