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| Main technical parameter |
| Item | Data |
| Rated voltage | 220V / 380V |
| Design temperature | 1000℃, 1200℃, 1400℃, 1600℃, 1700℃, 1800℃ |
| Heating rate | ≤0.1-30℃/min(can be adjusted arbitrarily) |
| Heating element | High quality U type silicon stick / High quality U type molybdenum bar |
| Control accuracy | ± 1℃ |
| Temperature control | Microcomputer control, PID adjustment, intelligent microcomputer control, 50 stage programmable temperature control curve, no need to watch(automatic heating, heat preservation, open the door to cut power) |
| Temperature measuring element | K(0-1300℃)/S(0-1600℃)/B(0-1820℃) |
| Furnace material | Ceramic fiber/ Alumina fiber/ Composite alumina fiber/ High purity alumina fiber/ Imported fiber |
| Furnace door structure | Side-opening and the furnace door can be rotated 360 degrees |
| Heat dissipation mode | A double layer resistance tropical air cooling system |
| Surface temperature | ≤42℃ |
| Spare parts | 2 heating rods, 2 rods, 1 crucible tongs, 1 pair of fire gloves, 1 copy of the instruction and 1 copy of certificate of conformity |
| Application |
JNL-18MLQ tube furnace is for scientific research institutes, universities, industrial and mining enterprises in the experiment and production.
Mainly used for high-temperature annealing of precision, microcrystalline, preparing a ceramic glaze, annealing mold, plastics, such as experimental powder sintered nanomaterials, quenching and metal parts made of high temperature process heat requirements
| Technical characteristics |
1.The shell is made of high-quality cold-rolled steel double-layer structure design, shell color paint after baking at high temperature, durable.
2.Equipped with air-cooled system, the furnace has the advantages of temperature balance, low surface temperature, fast rise and fall temperature.
3.Vacuum system uses a special design, with easy operation, high vacuum, small vacuum leak , (ultimate vacuum: 10-5pa)
4.Sealing systems made of stainless steel and high-temperature furnace tube flange and O -type silicone rubber seal, after the gas flow meter needle valve controlled by a switch, valve regulated with an intake valve, an exhaust valve, the vacuum valve, filling nitrogen, argon Gas and other inert gases
5.Furnace imported composite alumina fiber material by CNC technology to build than the traditional electric furnace energy saving 30%
6.Control system uses microcomputer artificial intelligence adjustment technology, with 50 sections of programming, and the preparation of a variety of heating, thermostat, cooling program, high temperature control accuracy
7.Crystal modular SCR control, phase trigger; the use of high-quality heating elements
8.Control Panel: The use of digital control with (over-temperature, over-voltage, super-current, broken even, power and other protection features)
9.Honors: ISO9001: 2008, AAA business, CE certification
10.Temperature category: 1000 ℃ 1200 ℃ 1400 ℃ 1600 ℃ 1700 ℃ 1800 ℃ 2200 ℃
| Furnace size |
| Heating zone length (mm) | Tube diameter (mm) | Voltage (V) | Power (KW) | Temperature control accuracy |
| 100, 150, 200, 300, 400, 500, 600, 800, 1000, 1200 | 30, 40, 60, 80, 100, 120, 150 | 220/380 | 4-35 | ± 1 |

List of selectable accessories | ||
Separate control cabinet | Touch screen instrument | Remote auxiliary module |
Observation window | Air-bleed hole and chimneys | Heat fan |
Crucible | Door plugging | Hearth plate |
Alundum tube | Quartz tube | Vacuum pump |



Luoyang Liyu Kiln Co., Ltd. is a large electric furnace manufacturing base integrating R&D, production, sales, and service. Base on professional technology and manufacturing team with over 20 years of manufacturing experience, design and manufacture of various sizes and models, a variety of high-precision electric furnace and kiln for customer according to the user requirements.
Our products mainly include high temperature muffle furnace, frit furnace, vacuum atmosphere furnace, tube furnace, box furnace and vertical furnace, etc. These products are widely used in universities, research institutes, industrial and mining enterprises for experiment and production of powder, military, electronics, metallurgy, medicine, ceramics, glass, machinery, new material development, special materials, refractory materials, building materials, chemicals, metal sintering and metal heat treatment.
We continually develop the new products, and have developed a series of energy-saving JNL furnace, furnace products with more excellent conditions of fast heating, high energy, high precision, high stability, good thermal insulation performance, full microcomputer control, programmable automatic warming, cooling, heat preservation, furnace surface temperature near room temperature etc.
In recent years, Liyu has passed ISO 9001:2008 quality management system certification in 2015, and in product safety, we passed the CE certification.
Sincerely welcome new and old customers to visit and negotiate.



Q: Can I use our country's plug?
A: Yes, we can provide following standard plugs in different countries.
Q: Usually I only need 900℃ to conduct my experiment, can I have a furnace with max temperature of 1000℃?
A: Yes, we can custom-made the furnace according to your need.
Q: How about the temperature/time control?
A: the furnace's temperature and time is controlled by PID touch panel,it is a programmable control type.Easy to operate.
Q: How about the delivery period?
A: The delivery period is depends on the order quantity, in ordinary we have 1~3 sets in stock.It can be delivery within 10 working days.
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