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High temperature vertical electric furnace series
Set research and development, production, sales, service as one of the formal electric furnace manufacturing base

Lyl-17lbdl vertical box furnace with two open doors

Brief introduction

Lyl-17lbdl, a new type of electric furnace with energy saving, environmental protection and independent development and production, has advanced and reasonable structure and beautiful appearance. The shell is made of high-quality cold-rolled steel plate, processed by CNC machine tool and processed by luxury and beautiful double-color imported epoxy powder electrostatic spraying process. It is high-temperature resistant and corrosion-resistant. It adopts high-quality resistance wire / silicon carbon rod / silicon molybdenum rod as heating element and double-layer air insulation layer of furnace shell, which can maintain low surface temperature of furnace shell. The furnace has balanced temperature field, low surface temperature of furnace body and heating rate Energy saving and other advantages. The furnace is made of ceramic fiber material by numerical control technology. It has strong thermal shock resistance, strong cold and heat resistance, good corrosion resistance, no collapse, no crystallization, no slag, no pollution and long service life. The control system adopts microcomputer artificial intelligence regulation technology, with PID Adjustment, full-automatic control, self-tuning function, multi-stage programming, and various heating and insulation programs can be programmed, with high temperature control accuracy; integrated module silicon controlled rectifier control, phase-shifting trigger, protection system: independent over temperature protection, overpressure, over current, leakage, short-circuit protection. The degree of automation is high, and the indexes have reached the advanced level.


This equipment is widely used in universities, scientific research institutes, industrial and mining enterprises. It is an ideal equipment for experiments and production of powder, electronics, metallurgy, medicine, ceramics, sulfur, glass new materials, chemical industry, metal sintering and metal heat treatment.    

Qualification & Honor

Quality management system certification GB/T19001:2016 / ISO 9001:2015   european union CE Certification: "Luoyang civilized and honest management demonstration enterprise" Electric furnace industry leader in China Quality, service, reputation AAA enterprise Products can withstand the inspection of professional testing institutions, and a third-party identification certificate can be issued if necessary.

Main functions & Features

1. Energy saving, power saving, environmental protection and pollution-free (furnace material: high-purity composite alumina / ceramic polycrystalline fiber, light weight, less heat storage, energy saving, half power operation on average)

2. Convenient replacement, energy saving and time saving (high quality resistance wire / silicon carbon rod / silicon molybdenum rod, long service life and convenient replacement)

3. Integrated design, flexible in use, not easy to disconnect, save operation space.

4. High temperature control accuracy (high quality instrument, temperature control accuracy ± 1 ℃), the instrument can issue a third-party test certificate

5. Good uniformity of furnace temperature (reasonable layout, balanced temperature field, no dead corner in furnace chamber)

6. The temperature is controlled by microcomputer program, the heating rate can be adjusted, and the automatic operation does not need to be watched manually

7. Over temperature, over pressure, over current, leakage, broken couple, broken rod automatic protection alarm

8. The furnace door is opened on the side, which is convenient to open

9. Wide range of applications: experiments and production of powder, military, electronics, metallurgy, medicine, ceramics, glass, machinery, new material development, special materials, refractory materials, building materials, chemical industry, metal sintering and metal heat treatment, etc

10. Double shell, air convection heat insulation layer

11. The shell is sprayed with plastic, and the appearance is exquisite and elegant

12. Good reputation and numerous customers

13. Good cost performance, perfect after-sales service, 1-year warranty and lifelong on-site maintenance

Main technical parameters( Main Technical Parameters)


Index value

Rated voltage


Design temperature


heating rate

≤ 0.1-40 ℃ / min (adjustable)

Heating element

High quality imported resistance wire / high quality U-shaped silicon carbide rod / high-quality U-type silicon molybdenum rod

control accuracy


temperature control

Microcomputer control, PID regulation, intelligent micro-computer control, multi-stage programmable temperature control curve, no need to watch (full-automatic heating, heat preservation, door opening and power-off)

Temperature measuring element


Furnace material

Ceramic polycrystalline fiber  / Alumina fiber / Composite alumina fiber / High purity composite alumina fiber / Imported fiber

Furnace door structure

Furnace door side open, can 360 degree rotation, Both sides open

Heat dissipation mode

Double shell, air insulation

Surface temperature rise


Random gift

There are 2 heating rods, 2 rods, 1 crucible pliers, 1 pair of fire-resistant gloves, 1 furnace bottom plate, and 1 Certificate of instruction

Selection Guide( Selection Guide)


Furnace size (depth, width and height) mm )

Furnace volume (L)

Supply voltage (V)

Power (kw)

control accuracy

LYL- 17LBDL -1


four point five

two hundred and twenty


± one

LYL- 17LBDL -2


seven point two

two hundred and twenty


± one

LYL- 17LBDL -3



two hundred and twenty


± one

LYL- 17LBDL -4





± one

LYL- 17LBDL -5



three hundred and eighty


± one

LYL- 17LBDL -6



three hundred and eighty


± one

LYL- 17LBDL - seven


one hundred and twenty-five

three hundred and eighty


± one

LYL- 17LBDL - eight


one hundred and seventy-five

three hundred and eighty


± one

LYL- 17LBDL - nine


two hundred

three hundred and eighty


± one

LYL- 17LBDL - ten


five hundred and twelve

three hundred and eighty


± one

LYL- 17LBDL - eleven


seven hundred and sixty-eight

three hundred and eighty

one hundred

± one

LYL- 17LBDL - twelve


one thousand

three hundred and eighty

one hundred and twenty

± one

LYL- 17LBDL - thirteen


one thousand and five hundred

three hundred and eighty

one hundred and fifty

± one

LYL- 17LBDL - fourteen


two thousand

three hundred and eighty

one hundred and eighty

± one

Temperature category

eight hundred -1800 Optional temperature

Non standard customization

According to the customer's demand, the furnace with different sizes can be customized

Standard accessories





High temperature gloves


one double

It has good comfort and can keep hands warm; it is resistant to cutting, wear and heat (it can resist contact heat at 350 ℃ for 60 seconds, and 100 ℃ for 180 seconds) for long-lasting durability.


Heating element

Silicon carbide


two branch

Silicon carbon components and use temperature is high, hard and brittle, used after molding, such as silicon carbide made of silicon carbide rod, silicon carbon tube heating temperature can reach one thousand and five hundred The operating temperature is 1000-1200 ℃ in vacuum and 1350 ℃ in nitrogen atmosphere

Silicon molybdenum rod


two branch

When heated to high temperature in oxidizing atmosphere, a dense quartz glass film is formed on the surface of the rod to protect it from oxidation. Therefore, Si Mo rod has high temperature oxidation resistance. In the oxidation atmosphere, the temperature can reach one thousand and eight hundred It can be used as heating element of high temperature furnace for electronics, ceramics, magnetic materials, glass, metallurgy, refractory, etc.

Crucible tongs


one hold

1. A common chemical instrument. It is usually used to clamp the crucible. It is generally made of stainless steel, or nonflammable and refractory hard materials.

2. Clean crucible tongs are required.

3. When taking out the hot crucible with crucible tongs, it is necessary to preheat the tongs first, so as to prevent the crucible from cracking due to local cooling. After use, the tongs should be placed upward on the table top or asbestos net.

4. After the experiment, the crucible tongs should be wiped clean, put into the experimental equipment cabinet, and placed dry.

5. The bending part is used for holding the crucible, and the tip is used for other purposes.

6. The crucible tongs may not be used together with the crucible, but can also be used alone.


Furnace bottom plate


one block

Ceramic furnace bottom plate, high temperature resistance, friction resistance, with load-bearing effect, can protect the furnace bottom from wear and prolong the service life of the equipment

Optional accessories list

Separate control cabinet

Touch screen instrument

Remote auxiliary module

Observation window

Vents and chimneys

Hot fan

Crucible, sagger

Door plug

Furnace bottom plate



Centralized control industrial computer


Multipoint temperature measurement

Tail gas purification and treatment device

Special note     

Quality assurance

The whole machine is guaranteed for one year, except for related consumables (except base plate and heating element) Lifetime door to door maintenance  

Factory environment

1. Indoor use;

2. The ambient temperature is in the range of ± 5-45 ℃;

3. The relative temperature of the surrounding environment should not exceed 85%;

4. There is no conductive dust, explosive gas and corrosive gas that can seriously damage metal and insulation around the furnace.


1. When the electric furnace is used for the first time or used again after long-term shutdown, it is necessary to dry the furnace, otherwise it is easy to cause furnace cracking.

2. Always keep clean and regularly check the furnace wiring for good contact.

3. When the electric furnace is used, the furnace temperature shall not exceed the rated temperature to avoid damaging the heating elements. It is forbidden to pour various flammable liquids and molten metals into the furnace.

4. In the working process, generally below 300 ℃, the heating rate should not be too fast, because the furnace is cold at the beginning of heating and needs to absorb a lot of heat.

after-sale service

1. We promise to deal with the customer's technical questions within 1 hour.

2. For the equipment returned to the factory for repair, we promise to issue the test results within 1 working day and complete the repair within 3 working days. Special materials need to be customized and handled as appropriate.

3. Return visit the user within 1 week after the equipment is returned to the customer, and provide free consultation on relevant technology.

Friendly tips

1. For the normal service life of the equipment, please do not operate at the set temperature for a long time.

2. Check and check the quantity of goods and accessories carefully when receiving the goods, so as to avoid the inconvenience caused by missing delivery.

3. In order to prolong the service life of the instrument, we suggest that the heating rate and cooling rate should not exceed 10 ℃ / min.

4. The cooling rate should not exceed 5 ℃ / min.

5. The furnace has no vacuum sealing structure, so flammable and explosive gas can not be introduced.

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

Common Faults & troubleshooting

Fault phenomenon

Cause of failure

Exclusion method

Turn on the control power switch without power supply indication

Control circuit, fuse broken, no power supply

Check whether there is a short circuit and replace the fuse tube after removing it

When the equipment is running, there is voltage and no current

Heating element broken

Replace the heating element

The instrument PV shows the upper limit temperature of the corresponding thermocouple

Thermocouple short circuit

Replace the thermocouple

The power supply is normal, but the furnace can not be heated

The main control circuit is damaged

Inform professional maintenance personnel for maintenance

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