site logo

laboratory Muffle Furnace

laboratory Muffle Furnace

The main purpose

Muffle furnace , box-type muffle furnace is widely used in laboratories , universities, scientific research institutes, industrial and mining enterprises for high temperature sintering, metal annealing, chemical industry, metallurgy, ceramics, new material development, organic matter ashing, and quality testing. also apply to the military, electronics, pharmaceuticals, specialty materials and other production and experiments . According to different atmospheres, different temperatures, different heating elements are used to satisfy different process experiments and specially manufactured , box-type resistance furnaces .

  1. Product Introduction

A new type of energy-saving electric furnace independently developed and produced . It has a reasonable double-layer shell structure, the surface temperature is less than or equal to 40 ℃, and the appearance is beautiful and generous. It is processed by cold-rolled steel plate, CNC machine tools, high-precision laser cutting machines, and CNC bending machines. The surface is beautiful, luxurious, and two-color. The oxidized powder is electrostatically sprayed to achieve a durable, non-fading, high-temperature and corrosion-resistant surface treatment.

Heating element: Choose different heating elements according to the furnace temperature. Heating elements are divided into: electric furnace wire, resistance band, silicon carbide rod, silicon molybdenum rod, and molybdenum wire.

Liner material: The liner is made of imported temperature refractory materials and constructed by the craftsmanship. Strong thermal shock resistance, good corrosion resistance, no collapse, no crystallization, no slag, and long service life!

Temperature control mode: microcomputer intelligent adjustment technology, PID adjustment, automatic control, self-tuning function; multi-segment program programming, and can control various heating, heat preservation, and cooling programs; power adjustment; high temperature control accuracy; integrated module thyristor control , Phase shift trigger. Protection device: independent over-temperature protection, over-voltage, over-current, leakage, short-circuit protection, etc., with a high degree of automation, and all indicators have reached the level.

B. Product features

1 , the furnace of imported materials lightweight high purity alumina ceramic material, high hardness, can not afford a high temperature powder, high temperature sintering ,, volatile free industry standard

2 , the heating body is made of resistance wire / silicon carbide / molybdenum disilicide, can withstand large loads, a stable and long life, good temperature uniformity Field

3 , patented design temperature control, heating speed, temperature uniformity, the same size than the industry to improve the efficiency of the sintering furnace 3 more times,

4 , the smart meter high precision temperature control, a small red temperature, with temperature compensation and temperature correction, temperature control accuracy of ± . 1 deg.] C ( available test certificate issued by a third party )

5 , door side opening , opened easily , can be 360 rotating ℃

6 , double casing steel plate, surface rust paint treatment temperature;

7 , electronic components are used in West German products, with leakage protection, reliable

8 , over-temperature alarm and power failure, leakage protection, reliable operation

9 , microcomputer control, intelligent PID regulator, 30 segment programmable temperature curve, automatic operation without guard (automatic raising and lowering, heat)

10 , by our software, Internet and computer, enabling a single or multiple remote control electric stove, real-time tracking, history, output reports and other functions; can be installed paperless recording devices, data storage, output;

11. Temperature category: 600 ℃ 800 ℃ 1000 ℃ 1200 ℃ 1400 ℃ 1600 ℃ 1700 ℃ 1800 ℃

C. Technical parameters

 Temperature item 600 ℃ -1200 ℃ 1400 ℃ 1600 ℃ 1700 ℃ 180O ℃
Voltage AC 220V/380V 220V/380V 220V/380V 220V/380V 220V/380V
Operating temperature 1200 ℃ 1400 ℃ 1600 ℃ 1700 ℃ 180O ℃
Long-term working temperature 1150 ℃ 1350 ℃ 1550 ℃ 1650 ℃ 175O ℃
Temperature control accuracy ± 1 ℃ ± 1 ℃ ± 1 ℃ ± 1 ℃ ± 1 ℃
Temperature measuring element and temperature range Nickel-chromium-nickel-silicon K temperature measurement range 0-1350 ℃ The temperature range of platinum and rhodium S is 0-1700 ℃ The temperature range of platinum rhodium platinum B is 0-1820 ℃ The temperature range of platinum rhodium platinum B is 0-1820 ℃ Platinum rhodium platinum or fiber optic infrared temperature measurement
Heating rate Adjustable Adjustable Adjustable Adjustable Adjustable
Heating element Resistance wire / silicon carbide rod Silicon carbide rod 1800 silicon molybdenum rod 1800 silicon molybdenum rod 1900 silicon molybdenum rod
Installation location and method of heating element Installed vertically on both sides of the furnace Installed vertically on both sides of the furnace Installed vertically on both sides of the furnace Installed vertically on both sides of the furnace Installed vertically on both sides of the furnace
Refractory High purity alumina fiberboard High-purity alumina zirconium-containing fiberboard Imported high-purity alumina fiberboard Imported Morgan Lightweight Materials Imported high-purity Morgan lightweight materials
Cooling structure Double-layer furnace shell, air-cooled Double-layer furnace shell, air-cooled Double-layer furnace shell, air-cooled Double-layer furnace shell, air-cooled Double-layer furnace shell, air-cooled
Furnace temperature ≤ 45 degrees ≤ 45 degrees ≤ 45 degrees ≤ 45 degrees ≤ 45 degrees
Heating rate The heating rate can be adjusted freely, the adjustment range: the heating rate is 40 degrees per minute ( 40 degrees /min ), the slow heating rate is 1 degree per hour ( 1 degrees /h )
Heating element Using U type 1800 molybdenum disilicide, molybdenum disilicide to a molybdenum disilicide heating element is made of a base element surface temperature of 1800 deg.] C , which is used in a high temperature oxidizing atmosphere, glassy surface, a layer of light generating The dense glass film can protect the silicon molybdenum rod from oxidation. Therefore, the silicon molybdenum rod element has high temperature. Under normal operation, the resistance of the element generally does not change with the length of use. Therefore, the old and new components can be mixed.
Furnace The furnace body is processed by CNC machine tools, and is made by polishing, grinding, pickling, phosphating, spraying plastic powder, high-temperature baking, etc., two-color matching, novel and beautiful appearance, with acid and alkali resistance, corrosion resistance, high temperature resistance, Easy to clean and other advantages
Furnace structure The electric furnace body adopts an air-cooled double-layer furnace body structure to ensure a good working environment
Door opening method The opening method of the furnace door is 180 degrees sideways in the axial direction , and the furnace door can be rotated 360 degrees to avoid the inner wall of the furnace door from roasting to the arm during high temperature reclaiming.
Refractory Furnace lining is made of imported Morgan fiber material, high temperature, low heat storage, resistance to rapid heat and cold, no cracks, no slag, and good insulation performance (the energy saving effect is more than 80% of the old electric furnace )
Insulation Materials It adopts three layers of insulation, namely: aluminum silicate fiber board, alumina fiber board, and alumina (polycrystalline) fiber board. The energy saving effect is more than 80% of the old electric furnace .
Furnace shell temperature Long-term use does not stop the furnace, the shell temperature is less than 45 degrees
cooling method Double-layer furnace shell, air-cooled
protect Adopt integrated modular control unit, accurate control accuracy, and designed dual-loop control and dual-loop protection, with overshoot, overshoot, undershoot, segment couple, phase loss, overvoltage, overcurrent, overtemperature, current feedback , Soft start and other protection
control The closed-loop technology is used for the trigger control of the thyristor module, the phase-shifting trigger control mode, the output voltage, current or power is continuously adjustable, and it has the characteristics of constant voltage, constant current or constant power; the current loop is the inner loop, and the voltage loop is the outer loop. When the load is suddenly added or the load current exceeds the current limit value, the output current of the *** voltage regulator is within the rated current range to ensure that the output and the voltage regulator work normally; at the same time, the voltage loop also participates in the regulation to make the output of the voltage regulator current is *** within the rated current range, to maintain a constant output current and voltage on the premise that there is sufficient balance adjustment; heat generating element to reach the protective avoid shock hazard, current and voltage, and achieve a reliable control effect control accuracy .
Display parameters Temperature, temperature segment number, segment time, remaining time, output power percentage, voltage, current, etc.
Button The imported button has a service life of more than 100,000 times and has an LED indicator.
Temperature curve setting Using intelligent temperature controller, equipped with standard PID , artificial intelligence adjustment APID or MPT and other adjustment methods, with self-tuning and self-learning functions, excellent control characteristics without overshoot and no undershoot, with 30- segment program control function, Realize the temperature rise and fall control of any slope, with programmable / operable commands such as jump (cycle), run, pause and stop , and allow to modify the program at any time during the control operation of the program; adopt artificial intelligence with curve fitting function Adjust the algorithm to obtain a smooth and smooth curve control effect;
Multiple curve input Microcomputer program control function, you can input settings: multiple curves can be input at the same time, and they can be called arbitrarily during use.
Random Accessories Two spare components, two sets of rods, one heat insulation plug for the furnace door, one crucible tongs, one pair of high temperature gloves, one manual and one certificate.
Warranty scope and period The electric furnace is guaranteed for one year free of charge, heating elements and thermocouples are not guaranteed (free replacement for natural damage within three months)
Customer optional 1 , a crucible, sagger, corundum pad / SiC plate

2 , computer control software and hardware

3 , touch-screen human-machine interactive control software and hardware

4 , supplies: a heat element

Precautions In order not to affect the service life of the electric furnace, we recommend that the heating rate and cooling rate be 10-20 ℃ /min , (the service life of the heating element will be shortened if the heating is too fast)

This box furnace does not use a vacuum seal structure, so no flammable and explosive gas can be passed into it

After this box furnace is used for a period of time, tiny cracks will appear in the furnace. This is a normal phenomenon and will not affect the use. At the same time, it can be repaired with alumina coating.

It is not recommended to pass in corrosive gas. If you want to pass in strong corrosive gas such as S , Na, etc., please inform in advance and we will treat the furnace

The high temperature solution cannot be leaked to the bottom of the furnace, and the avoiding scheme can be isolated by a backing plate or alumina powder

The instrument should be placed in a well-ventilated, non-humid place.

Packing List One electric furnace, two spare originals, two sets of rods, one heat insulation plug for the furnace door, one crucible tongs, one pair of high temperature gloves, one instruction manual, and one sales delivery note.
Shipping matters The packaging of the electric stove is wooden pallet paper packaging

Free domestic delivery (free delivery in the urban area)

We will be responsible for any damage that occurs during the transportation of the electric furnace

Logistics methods: transportation by car, railway, ship (foreign trade export), air (foreign trade export), transportation by our company appointed by special vehicle (packed in wooden cartons)


The furnace size can be customized according to customer requirements!


Furnace size mm Voltage v   Power kw   control precision
  200 × 150 × 150 220/380      4      ± 1
  200 × 200 × 200 220/380      6      ± 1
  300 × 200 × 200 220/380      8      ± 1
  300 × 300 × 300 220/380      10      ± 1
  400 × 300 × 300 220/380      12      ± 1
  500 × 300 × 200 220/380      15      ± 1
  500 × 300 × 300    380      18      ± 1
  500 × 500 × 500    380      25      ± 1
  800 × 500 × 500    380      40      ± 1
  1200 × 500 × 500    380      85      ± 1