Equipment Brief Introduction
Large High Vacuum High Temperature Furnace LYL-18ZTLSeries vacuum furnace equipment is primarily used for vacuum sintering, quenching, and other processes of hard alloys, magnetic materials, ceramics, and powdered materials. The high-temperature sintering process for materials ensures reliable thermal and insulating properties design. The new electrode structure eliminates the phenomenon of electrode leakage in high-temperature furnaces, and the replaceable parts in the heating system are easier to maintain and replace.
Primary Application
This equipment is widely used in universities, research institutions, industrial and mining enterprises, and is an ideal device for experiments and production in powder, electronics, metallurgy, pharmaceuticals, ceramics, sulfur, new glass materials, chemicals, metal sintering, and metal heat treatment.
Structural DescriptionStructure）
Carbon steel shell, welded by ***Pressure Vessel Factory, ensuring airtightness of the weld joints, free of leak points such as blowholes and cracks.
2. As required, constructed with a double-layer furnace shell, sealed with O-ring silicone gaskets.
3. The furnace door is sealed with a wire-cutting flange, fitted with an O-ring made of silicone, and secured with a handwheel.
4. Furnace chamber is square or round, with an optional electrically operated door.
5. The outer surface of the furnace shell is electrostatically sprayed with rust-proof paint, looking elegant and tasteful.
6. High-temperature furnace chamber for alumina polycrystalline fibers, aesthetically pleasing and energy-efficient
7. For safe and ***usage, we use renowned electrical appliances.
8. Temperature control and detection are fully utilized
Single platinum rhodium (S-type) ≤ 1500°C
Dual Platinum Rhodium (Type B) ≤ 1800℃
Vacuum System DescriptionVaccum System）
The vacuum system is a diffusion pump unit, consisting of a diffusion pump and a scroll-type Roots vacuum pump. It includes a high-vacuum diffusion pump, water-cooled baffle, scroll vacuum pump, electromagnetic vacuum filling valve, high-vacuum pneumatic baffle valve (main valve), high-vacuum pneumatic baffle valve pre-evacuation valve, high-vacuum pneumatic baffle valve (exit valve), preliminary pipeline filling valve, connecting pipeline, seals, composite vacuum gauge, and electrical control cabinet, etc., forming a suction system.
2. This unit is not suitable for extracting gases that are corrosive to metals or react chemically with pump oil. It can serve as a high vacuum acquisition device for high-tech equipment such as vacuum smelting, vacuum sintering, vacuum heat treatment, vacuum coating, vacuum brazing, and space simulation experiments. The operating environment temperature is 5~40°C, with relative humidity not exceeding 85%, and cooling water temperature at 25°C ± 5°C.
3. The vacuum level is related to the suction capacity of the vacuum pump, the sealing of the chamber, and the degassing amount of the internal materials (such as the inner wall of the furnace, experimental devices, heat sinks, etc.). The ultimate pressure of this unit is 1×10-3 Pa, the operating pressure is 1×10-2 Pa, and the suction time is approximately 1 hour.
4. The diffusion pump cannot generate suction independently; it must be operated by a primary pump to reduce the system pressure to within the starting pressure required by the diffusion pump, typically ≤10 Pa.
5. A new water-cooled baffle is installed at the inlet of the diffusion pump, effectively preventing the return of oil vapor from the pump into the vacuum chamber, thus avoiding contamination of the experimental equipment.
6. To prevent the vacuum oil in the fore pump from flowing back into the diffusion pump chamber upon shutdown, an electromagnetic valve must be fitted at the intake of the fore vacuum. This valve will automatically isolate the system pipeline during shutdown.
7. Valves are all actuated by pneumatic means, offering convenient operation.
8. Upon initiating the vacuum pump, this system is equipped with a preliminary pumping line, where the gas to be evacuated is directly extracted by the primary pump without passing through the diffusion pump. This method prevents contamination of the diffusion pump by the gas inside the evacuated vessel (moisture, volatiles, impurities). Once the pressure inside the vessel drops to 10 Pa, close the preliminary pump valve and open the baffle valve, and the diffusion pump will then start normal vacuum extraction of the vessel.
Qualification & Honor
Quality Management System CertificationGB/T19001:2016/ISO 9001:2015； European UnionCECertification: "Luoyang City Model Enterprise for Civilized and Trustworthy Business Operation"“China Electric Furnace Industry***”；“Quality, Service, Reputation - AAA-rated Enterprise”The products have passed inspections by *** certification bodies, and third-party certification certificates can be provided upon request.
Main Functions and Features
Wide temperature range of 800℃-1800℃ (optional)
2. Vacuum level up to 10-3 Pa (optional)
3. Energy-efficient and electricity-saving, environmentally friendly and non-polluting (high-purity composite alumina furnace lining material)/Ceramic polycrystalline fiber, lightweight, low heat retention, energy-saving (average half-power operation)
4. Easy replacement Energy-saving and time-efficient (with high-quality resistance wire/silicon carbide rod/silicon molybdenum rod heating elements, long lifespan, easy replacement)
5. Integrated control, easy to operate, and more user-friendly
6. High temperature control accuracy (instrument quality superior, temperature control accuracy ±)1The gauge can provide a third-party inspection certificate.
7. Good uniformity of furnace temperature (rational layout, balanced temperature field, no blind spots in the furnace cavity)
8. Smart temperature control with adjustable heating rate, automatic operation
9. Over-temperature, over-pressure, and over-flow automatic protection
10. Gas flow meters are available in float ball flow meters and mass flow meters, enabling manual and automatic control of gas flow, as well as the option to shut off gas flow.
11. Broad Application Scope: Universities, research institutions, industrial and mining enterprises for powder, military, electronics, metallurgy, pharmaceuticals, ceramics, glass, machinery, new material development, special materials, refractory materials, construction materials, chemicals, metal sintering, and metal heat treatment, etc., for testing and production.
12. Double-shell structure, air-insulated, (available with cold water unit)
13. Powder coated housing with a two-tone color scheme for a beautiful and generous appearance
14. Excellent reputation, with a large customer base
15. Great value for money, comprehensive after-sales service, 1-year warranty, lifetime on-site repair.
Main Technical Specifications
Item | Index Value |
Rated Voltage | 220V/380V |
Design Temperature | 800℃，1000℃，1200℃，1400℃，1600℃，1700℃，1800℃ |
Rise rate | ≤0.1-40°C/min (adjustable) |
Heating Element | High-Quality Imported Resistance Wire / High-Quality U-Type Silicon Carbon Rod / High-Quality U-Type Silicon Molybdenum Rod |
Temperature Control Accuracy | ±1℃ |
Vacuum Level | -0.1 mpa to 6.7 x 10^-3 pa (optional) |
Flow meter | Bubbling Flow Meter (Optional Mass Flow Meter) |
Temperature Control Method | Intelligent control with PID tuning, microcomputer control, multi-stage programmable temperature control curves, unattended operation (fully automatic heating, maintenance, power off upon door opening) |
Thermosensor | K（0-1300℃）/S(0-1600℃)/B（0-1820℃） |
Furnace chamber material | Ceramic Polycrystalline Fiber /Alumina fiber/Alumina Fiberglass/High-purity aluminum oxide fiber/Imported Fiber |
A breathable atmosphere | Available for inert protective cooling gases such as nitrogen, argon, oxygen, and carbon monoxide. Also, an option to close without an atmosphere. |
Cooling Method | Double shell structure, air insulation layer (optional cold water unit for water cooling system) |
Surface Temperature Rise | ≤30℃ |
Random gift | 2 heating rods, 2 rod holders, 1 crucible tongs, 1 pair of refractory gloves, 1 copy of instructions and 1 certificate of conformity each |
Selection Guide
Model | Furnace chamber dimensions (depth x width x height/diameter x height mm) | Power Voltage (V) | Power (KW) | Temperature control accuracy |
LYL-18ZTL-1 | 300*300*300/300*300 | 380 | 12 | ±1℃ |
LYL-18ZTL-2 | 500*500*500/500*500 | 380 | 25 | ±1℃ |
LYL-18ZTL-3 | 700*500*500/500*700 | 380 | 30 | ±1℃ |
LYL-18ZTL-4 | 800*500*500/500*800 | 380 | 40 | ±1℃ |
LYL-18ZTL-5 | 800*800*800/800*800 | 380 | 90 | ±1℃ |
LYL-18ZTL-6 | 1200*800*800/800*1200 | 380 | 100 | ±1℃ |
LYL-18ZTL-7 | 1000*1000*1000/1000*1000 | 380 | 120 | ±1℃ |
LYL-18ZTL-8 | 1500*1000*1000/1000*1500 | 380 | 150 | ±1℃ |
LYL-18ZTL-9 | 2000*1000*1000/*1000*2000 | 380 | 180 | ±1℃ |
Temperature Category | 800°C-1800°C available for selection | |||
Customized Non-Standard | According to customer requirements, customize experimental electric furnaces in various sizes, with the hearth available in either round or square shapes. | |||
Standard Accessories
Name | Image | Quantity | Description | |
High-Temperature Gloves | | 1Double | Comfortable and keeps hands warm; cut-resistant, wear-resistant, and heat-resistant (can withstand 350℃ for 60 seconds of contact heat, 100℃ for 180 seconds of contact heat) durable. | |
Heating Element | Silicon carbide rod | | 2Please provide the Chinese content you would like translated into American English. | Silicon carbide components, with higher operating temperatures, are hard and brittle, used after shaping, such as silicon carbide rods and tubes, which can reach high heating temperatures under dry air conditions.15001000-1200°C under vacuum, long-term use temperature of 1350°C under nitrogen atmosphere |
Silicon Molybdenum Rod | | 2Please provide the Chinese content you would like translated into American English. | Silicon molybdenum rods are heated to high temperatures under an oxidizing atmosphere, forming a dense quartz glass film on the surface to protect them from further oxidation. Therefore, silicon molybdenum rods possess high-temperature oxidation resistance. Under an oxidizing atmosphere, the temperature can reach1800℃, can be used as heating elements for industrial high-temperature furnaces in electronics, ceramics, magnetic materials, glass, metallurgy, refractory materials, etc. | |
Tongs for crucibles | | 1Please provide the Chinese content to be translated. | 1. A common chemical instrument. Typically used to hold crucibles. Generally made of stainless steel or hard, non-combustible, and non-oxidizable materials. 2. Use clean tongs. 3. When handling a hot crucible with tongs, preheat the tip of the tongs to prevent the crucible from cracking due to local cooling. After use, place the tip of the tongs facing up on a table or asbestos pad. 4. After the experiment, clean the crucible tongs and place them in the laboratory equipment cabinet for drying storage. 5. Use the curved section for holding crucibles; use the pointed end for other applications. 6. Crucible tongs are not necessarily used in conjunction with crucibles; they can also be used alone. | |
Optional Function Accessories Listnal Accessories List）
Integrated Control | Touchscreen Gauge | Remote Assistance Module |
Observation window | Exhaust vents and chimneys | Hot Fan |
Crucibles, Kiln Shells | Door stopper | Bottom plate |
Blower | Thermocouple | Centralized Control Industrial Computer |
caster wheel | Multi-point temperature measurement | Exhaust Emission Purification Equipment |
Special Note
Quality Assurance | One-year full machine warranty, excluding related consumables (excluding pads and heating elements); lifetime on-site repair service. |
Factory Environment | 1. Indoor use; 2. Environmental temperature is within ±5-45°C range. 3. Relative ambient temperature not exceeding 85%. 4. No conductive dust, explosive gases, or gases that can severely damage metals and cause insulation corrosion are present around the stove. |
Safety Protection | 1. When using an electric furnace for the first time or after a long period of disuse, it is necessary to dry the furnace to prevent cracking of the furnace chamber. 2. Keep clean regularly and inspect the electrical furnace connections for good contact periodically. 3. During operation, the furnace temperature must not exceed the rated temperature to prevent damage to the heating elements. It is prohibited to pour various flammable liquids and molten metals into the furnace. 4. During the process, generally below 300℃ is recommended, with a moderate heating rate, as the furnace is cold at the beginning and requires a significant amount of heat absorption. |
After-sales service | 1. We commit to resolving our customers' technical inquiries within one hour. 2. We promise to provide a test result within 1 working day for equipment returned for repair, complete the repair within 3 working days, and handle special materials and customization on a case-by-case basis. 3. Within one week after returning the equipment to the customer, conduct a follow-up visit with the user and provide free technical consultation. |
Friendly Reminder | Do not operate the equipment for extended periods at the rated temperature to ensure its normal service life. 2. Carefully count and verify the quantity of goods and accessories upon receipt to avoid any inconvenience caused by shortages or omissions. 3. To extend the service life of the instrument, we recommend a heating rate and cooling rate of 10℃/min. 4. The cooling rate should not exceed 5°C/min. 5. This furnace does not have a vacuum-sealed structure, therefore it is not suitable for introducing flammable or explosive gases. 6. After a period of use, the furnace chamber may develop minor cracks, which is a normal occurrence and will not affect its operation. It can be repaired using an alumina coating. |
Common Faults and Troubleshooting
Fault Phenomenon | Fault Cause | Exclusion Methods |
Turn on the control power switch, no power indicator is displayed. | Control circuit, fuse blown, power outage | Inspect for shorts and replace fuses after elimination. |
Equipment operates with voltage but no current. | Heating element fracture | Replace heating element |
Instrument PV display the upper temperature limit of the corresponding type thermocouple | Thermocouple short circuit | Replace thermocouple |
Power supply is normal, but the furnace cannot heat up. | Control main line damage | Notification to *** Maintenance Staff for Inspection |
