Products- Details

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Details

VMK-S-model

Tmax de hasta 1050 °C

Laboratory chamber furnace, ASW insulation, gas tight muffle, 2.6 - 15 l, Tmax 1050 °C

Aplicaciones:

annealing, ashing, borating, brazing, bright annealing, calcination, carburization, debinding, dewaxing, heat treatment, nitriding, nitrocarburizing, reduction, sintering, soldering, surface coating, tempering

The most important characteristics

  • Fiber insulated laboratory furnace with protective gas tight chamber
  • Max. operating temperature 1050°C
  • Fiber insulated inner housing
  • Water cooled door
  • Long-life Kanthal A1 heating elements
  • Uniform temperature distribution in the furnace chamber
  • Very light weight
  • High quality – made in Germany
  • Easy to handle

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

  • Different temperature controllers
  • Multi functional unit
  • Serial interface
  • Process guiding software
  • Gas feeding unit
  • Burning-off device with flame supervision
  • Condensate trap
  • Swivelling door
  • Reinforced thermocouple
  • Inconel muffle for 1100°C Tmax
  • Safety package
  • Gas warning system
  • Furnace exhaust 

Especificaciones del producto

Sizes

model

liter

inside dimensions mm (wxdxh)

T. max. °C

kW

VMK-39-S

2,6

150 x 180 x 95

1050

1,9

VMK-80-S

5,2

180 x 210 x 140

1050

2,1

VMK-135-S

9,2

220 x 280 x 150

1050

3,0

VMK-250-S

15,0

200 x 360 x 210

1050

5,0

Technical details

Furnace housing

The attractively designed stainless steel furnace housing is provided with a shelf below the door which protects the operation elements against thermal and mechanical stress at the same time. 

Heating

Long-live Kanthal A1 heating elements are embedded in the fiber muffle. The heating is effected from four sides so that a uniform temperature distribution in the furnace chamber is achieved. 

Fibre insulation

The furnace chamber is vacuum formed in one ceramic fiber block. That way high insulation values can be achieved which result in a considerable reduction of the wall thickness of the insulation as well as of the weight at low energy saving volume. Circulating air between the insulation and furnace housing guarantees low outside wall temperatures.

In combination with the insulation, faster heating up and cooling down cycles as well as 40% lower current consumption can be achieved. 

Protective gas tight muffle insert

Regarding the muffle insert, all heat loaded parts are made of heat resistant material (material number 1.4841), otherwise stainless steel, and are firmly fixed on the front side on the furnace frame by holding angles. The muffle inner pressure is designed for max. 4 – 7 mbar. The sealing flanges on the front side of the muffle are designed water cooled. The cooling water reflow is only designed for a pressureless reflow. 

Control system

In the lower part of the furnace, below the supporting shelf, the control unit is installed. In basic design it is equipped with the following components:

  • Temperature controller G400
  • 2- or 3 setpoint controller with PID behavior
  • One heating up ramp freely programmable / ramp function
  • Display of actual value (desired value displayed after pressing the button)
  • Self-optimization prevents overshooting (pre-adjustment or automatic adjustment)
  • Separation of control and configuration level (prevents undesired changes)
  • Alarm signal in case of thermocouple fracture
  • Timer with turn-on & turn-off delay
  • Safety controller
  • Timer for preselection of switch-on time of the 2 thermocouples (NiCr-Ni)
  • Control thermocouple is installed in muffle insert, safety thermocouple between muffle insert and furnace heating

Características del producto

Gama de productos: type series
Modo operacional: Batch
Tipo constructivo: Furnace
Diseños: Chamber furnace
Temperatura máxima (°C): 1050
Calentamientos: electrical
Método de calentamiento: resistance
Atmósferas: Air, Controlled gas atmosphere
Aplicaciones:annealing, ashing, borating, brazing, bright annealing, calcination, carburization, debinding, dewaxing, heat treatment, nitriding, nitrocarburizing, reduction, sintering, soldering, surface coating, tempering