Double Door Muffle Furnace

double door muffle furnace

Brother Double Door Muffle Furnace has a double door with sliding rails on each door, easy to load and unload from two ends. It also makes chamber cooling fast to increase productivity.

This muffle furnace consists of high-quality alumina fiber brick and quality heating elements with a special design. There’re 4 different types of this double door muffle furnace:1200℃ / 1400℃ / 1700℃ / 1800℃ . It is an ideal electric muffle furnace for materials annealing and sintering.

double door muffle furnac 1700

Double Door Muffle Furnace Features

  • Double door with sliding rails on each door, easy to load and unload from two ends.
  • 4 different types:  1200℃ / 1400℃ / 1700℃ / 1800℃ Max.
  • Maximum energy efficiency is achieved by surrounding the chamber with thermal-efficient alumina fiber ceramic insulation.
  • Heavy-duty double-layer structure with cooling fan. Lower temperature in outside case.
  • PID automatic control via the current limiting phase angle fired the resistor, e.g. SCR (Silicon Controlled Rectifier).
  • Power control with 51 segments programmable.

Double Door Muffle Furnace video:


Double Door Muffle Furnace 1700 Type Specifications

. Technical Specifications

Max. temperature1700℃ (<2hour)
Working temperature1600℃
Standard Temperature controlling●  PID automatic control via SCR (Silicon Controlled Rectifier) power control with phase angle fired, current limiting resistor.
●  51 programmable segments for precise control of heating rate, cooling rate and dwell time.
●  Built in PID Auto-Tune function with overheating & broken thermocouple broken protection.
●  Over temperature protection and alarm allows for operation without attendant.
Optional of Temperature controlling●  Software (Furnace can be operated by PC by installing a control software )
●  Touch screen temperature controller
Temperature accuracy±1℃
Temperature Uniformity±5℃ over 120mm @ 1700℃
±3℃ over 80mm @ 1600℃
Heating rate0-15℃/min
ThermocoupleB type (Pt-Rh to Pt-Rh) with 99.7% purity Alumina tube
Heating elementMoSi2 heating elements for Muffle Furnace 1700 Type
Furnace ChamberThree layers of ceramic fiber insulation materials
●  First layer: 1800℃ ceramic fiber board.
●  Second layer: 1600℃ ceramic fiber board.
●  Third layer: 1260℃ ceramic fiber board.
Furnace structureDouble layer steel casing with dual cooling fan, surface temperature below 60℃
Furnace door● Double door with sliding rails
Warranty●  One year limited warranty with life time support. (Consumable parts such as heating elements and crucibles are not covered by the warranty, please order the replacement at related products)
●  ATTENTION: Any damages caused by the use of corrosive and acidic gases are not under the coverage of One Year Limited Warranty.

. Application Notes

Using Attentions●  The cooling rate of this Muffle Furnace 1700 Type shall also not exceed 10℃/min.
●  Toxic or explosive gases are not recommended for use with this furnace without necessary safety controls and supervision.
●  Small cracks may appear on the surface of the refractory ceramics over extended use. This is a normal occurrence and the cracks may be repaired with alumina coating.
●  A refractory door block must be inserted before closing door.


Double door Muffle Furnace 1700 Type Standard Size:

Furnace Chamber Size(mm)(Width x Height x Depth)Volume(L)Rated Power(kw)
Note:Special size is customizable.


See our other Muffle Furnace:


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