Vacuum Atmosphere Furnace

LYL-12ZKU Double-Door Atmosphere Furnace with Stainless Steel Inner Chamber

DESCRIPTION:

Model No: LYL-12ZKU
Heating Rate: ≤0.1-40°C/min
Rated Voltage: 220V/380V
Chamber Size: Customizable
Design Temperature: 800°C-1800°C
Temperature Control Accuracy: ±1°C
Temperature Measuring Element: K (0-1300°C) / S(0-1600°C)/ B (0-1820°C)

Customization > Get A Quote

PRODUCT INTRODUCTION

Brief Introduction

LYL-12ZKU Double-Door Atmosphere Furnace with Stainless Steel Inner Chamber, environmentally friendly electric furnace, developed through independent R&D by integrating advanced technologies. It features a sophisticated, rational structure and a refined, aesthetically pleasing design. The outer casing is constructed from high-quality cold-rolled steel plate, processed by CNC machine tools, and finished with a premium, durable two-tone imported epoxy powder electrostatic spray coating, offering excellent resistance to high temperatures and corrosion. High-quality resistance wires, silicon carbide rods, or molybdenum disilicide rods serve as heating elements. The double-layer furnace shell with an air insulation layer maintains a low surface temperature. Key advantages include a balanced temperature field, low exterior surface temperature, fully adjustable heating rates, and high energy efficiency. The furnace chamber is constructed from ceramic fiber materials using CNC processes, providing exceptional thermal shock resistance, tolerance to rapid heating and cooling cycles, high corrosion resistance, and resistance to sagging, crystallization, and dusting, ensuring a long service life with no pollution. The control system employs microcomputer-based AI regulation technology, featuring PID adjustment, fully automatic control, and self-tuning capabilities. It supports multi-segment programmable profiles for various heating and holding steps, achieving high temperature control accuracy. The system utilizes integrated thyristor modules and phase-shift triggering. The protection system includes independent safeguards against over-temperature, over-voltage, over-current, leakage, and short circuits. The furnace boasts a high degree of automation, with all performance indicators meeting advanced standards.

This furnace is equipped with a vacuum pump (Model: 1 set -8 type), and a condenser tube assembly is required between the vacuum pump and the furnace interface. Operating Atmosphere: Supports atmosphere protection (compatible with various inert protective atmospheres) and includes a pre-configured vacuum connection interface.

Application

This equipment is widely used in universities, research institutes, and industrial and mining enterprises. It is an ideal device for experiments and production involving powders, electronics, metallurgy, pharmaceuticals, ceramics, sulfur, glass (new materials), chemicals, metal sintering, and metal heat treatment.

Qualification & Honor

ISO 9001:2015 Quality Management System Certification
CE Certification (EU Conformity)
Luoyang City "Model Enterprise for Civilized and Honest Operation"
"Leading Brand in China's Electric Furnace Industry"
"AAA Enterprise for Quality, Service, and Creditworthiness"
Products can withstand testing by authoritative inspection institutions; third-party verification certificates can be provided upon request.

Main Functions & Features

Energy-saving and Eco-friendly: The furnace chamber is constructed from high-purity composite alumina/ceramic polycrystalline fiber. It is lightweight with low heat storage capacity, ensuring high energy efficiency—the unit typically operates at half power on average.
Convenient Maintenance & Time-saving: Equipped with high-quality heating elements (resistance wire/silicon carbide rods/silicon molybdenum rods) that offer a long service life and easy replacement.
Integrated Design: Features an integrated structure for flexible operation, minimizing connection failures and saving valuable workspace.
High Temperature Control Precision: Utilizes premium instruments with a temperature control accuracy of ±1°C. Instruments can be supplied with third-party inspection certificates upon request.
Excellent Furnace Temperature Uniformity: Rational internal layout ensures a balanced temperature field with no dead zones within the chamber.
Microcomputer Programmable Control: Features adjustable heating rates and fully automated operation, eliminating the need for constant manual supervision.
Comprehensive Safety Protection: Automatic alarms and protection systems for over-temperature, over-pressure, over-current, leakage, thermocouple failure, and heating element breakage.
Side-opening Door: The furnace door opens sideways for convenient access.
Wide Range of Applications: Widely used in universities, research institutes, industrial and mining enterprises for powder processing, military applications, electronics, metallurgy, pharmaceuticals, ceramics, glass, machinery, new material development, special materials, refractories, building materials, chemicals, metal sintering, and heat treatment for both experimental and production purposes.
Double-layer Shell & Air Convection Insulation: Designed with double-layer housing and an air-cooled convection layer to keep the exterior cool.
Spray-coated Exterior: Features a beautifully finished spray-coated shell with a two-tone color scheme for a professional appearance.
Proven Reputation: Established brand with a large and diverse customer base.
High Cost-performance & After-sales Service: Excellent value for money backed by comprehensive after-sales support, including a 1-year warranty and lifetime on-site repair/maintenance services.
Round Furnace Door: The round door design ensures lower surface temperatures on both the door and body, enhancing operational safety.
Superior Sealing Performance: Equipped with O-type sealing rings and secured by four handwheels for compression sealing. This ensures excellent airtightness, uniform gas sintering, and zero leakage during 72-hour pressure holding tests. It also allows for convenient door operation.(Note: Traditional square doors rely on perimeter screws and rubber pads, which fail to meet sealing requirements, waste gas, risk oxidation during firing, suffer from thread stripping over time, and cannot meet technical standards.)
New Design: A new generation of vacuum atmosphere furnaces featuring specialized sealing designs.
Gas Detection (Optional): Configurable with oxygen analyzers to monitor exhaust gas content (multiple gas detectors available as options)

PRODUCT PARAMETERS

Main Technical Parameters

Item	Specification
Rated Voltage	220V/380V
Design Temperature	800℃, 1000℃, 1200℃, 1400℃, 1600℃, 1700℃, 1800℃
Heating Rate	≤0.1-40℃/min (adjustable)
Heating Elements	High-quality imported resistance wire / High-quality U-type silicon carbide rod / High-quality U-type silicon molybdenum rod
Temperature Control Accuracy	±1℃
Vacuum Level	-0.1MPa (High vacuum can reach 300Pa)
Temperature Control Mode	Microcomputer control, PID regulation, intelligent microcomputer control, multi-segment programmable temperature control curve, no need to watch (automatic heating, holding, power off when door is opened)
Temperature Measuring Elements	K (0~1300℃) / S (0~1600℃) / B (0~1820℃)
Furnace Chamber Material	Ceramic polycrystalline fiber / Alumina fiber / Composite alumina fiber / High purity composite alumina fiber / Imported fiber
Vacuum Pump	Rotary vane mechanical pump
Flow Meter	Float flow meter
Inert Gas	Can pass inert protective gases: nitrogen, argon, oxygen, hydrogen
Hydrogen Protection Device	Hydrogen detector (optional)
Furnace Door Structure	Front side opening
Cooling Method	Double-layer shell, air insulation layer
Surface Temperature Rise	≤30℃
Accessories as per model	2 heating rods, 2 holders, 1 crucible tong, 1 pair of refractory gloves, 1 furnace bottom plate, 1 instruction manual and 1 certificate of conformity

Selection Guide

Model	Furnace Chamber Dimensions (DepthWidthHeight mm)	Furnace Chamber Volume (L)	Power Supply Voltage (V)	Power (kW)	Temperature Control Accuracy
LYL-18ZKU1	200 * 150 * 150	4.5	220	4	±1℃
LYL-18ZKU-2	300 * 200 * 120	7.2	220	6	±1℃
LYL-18ZKU-3	300 * 200 * 150	9	220	8	±1℃
LYL-18ZKU-4	300 * 200 * 200	12	220/380	10	±1℃
LYL-18ZKU-5	400 * 250 * 160	16	380	12	±1℃
LYL-18ZKU-6	400 * 300 * 300	36	380	14	±1℃
LYL-18ZKU-7	500 * 500 * 500	125	380	25	±1℃
LYL-18ZKU-8	700 * 500 * 500	175	380	30	±1℃
LYL-18ZKU-9	800 * 500 * 500	200	380	40	±1℃
LYL-18ZKU-10	800 * 800 * 800	512	380	90	±1℃
LYL-18ZKU-11	1200 * 800 * 800	768	380	100	±1℃
LYL-18ZKU-12	1000 * 1000 * 1000	1000	380	120	±1℃
LYL-18ZKU-13	1500 * 1000 * 1000	1500	380	150	±1℃
LYL-18ZKD-14	2000 * 1000 * 1000	2000	380	180	±1℃
Temperature Category	800℃-1800℃ Optional
Customization	Non-standard models can be customized according to customer requirements, including chamber size, voltage, power, operating temperature, control system, etc.

STANDARD ACCESSORIES

Standard Accessories

Name		Picture	Quantity	Description
High-temperature Gloves			1 pair	Excellent comfort, keeps hands warm; Cut-resistant, abrasion-resistant, and heat-resistant (withstands contact with 350°C heat for 60 seconds, 100°C heat for 180 seconds). Durable.
Heating Elements	Silicon Carbide Rods		2 pieces	Silicon carbide elements, characterized by their high operating temperature, hardness, and brittleness, are ready for use after formation. For instance, silicon carbide rods and tubes, made from silicon carbide, can achieve a heating temperature of up to 1500°C under dry air conditions. Under vacuum conditions, the operating temperature ranges from 1000°C to 1200°C, while in a nitrogen atmosphere, the long-term use temperature reaches 1350°C.
Heating Elements	Silicon Molybdenum Rods		2 pieces	Silicon molybdenum rods, when heated to high temperatures in an oxidizing atmosphere, form a dense layer of quartz glass on the surface, protecting them from further oxidation. Therefore, silicon molybdenum rods exhibit high-temperature oxidation resistance. In an oxidizing atmosphere, they can reach temperatures up to 1800°C, making them suitable as heating elements for high-temperature furnaces in industries such as electronics, ceramics, magnetic materials, glass, metallurgy, and refractories.
Crucible Tongs			1 piece	1.A common chemical instrument typically used for handling crucibles. Generally made of stainless steel or other non-flammable, oxidation-resistant hard materials. 2.Clean crucible tongs must be used. 3.When using crucible tongs to pick up a hot crucible, the tips should be preheated first to prevent the crucible from cracking due to localized cooling. After use, the tongs should be placed on a table or asbestos mat with the tips facing upward. 4.After the experiment, crucible tongs should be cleaned, dried, and stored in the laboratory equipment cabinet. 5.Use the curved section for gripping crucibles; the tips are for other purposes. 6.Crucible tongs are not necessarily used exclusively with crucibles; they can also be used independently.
Furnace Bottom Plate			1 piece	The ceramic furnace bottom plate boasts excellent high-temperature resistance, abrasion resistance and load-bearing performance. It effectively protects the furnace base from wear and tear, thereby extending the equipment's service life.

Optional Accessories List

Integrated Furnace Temp. Control	Touchscreen Instrument	Remote Auxiliary Module
Observation Window	Exhaust Hole & Chimney	Hot Air Fan
Crucible, Casserole, Material Rack	Multi - material Table	Furnace Bottom Plate
Air Blowing	Thermocouple	Centralized Control Industrial Computer
Caster Wheel	Multi - point Temperature Measurement	Exhaust Gas Purification Device
Hydraulic Lifting (Manual/Auto)	Material Table Tilting	Vacuum & Atmosphere

Special Note

Item	Content
Factory Environment	1. Indoor use; 2. Ambient temperature range: ±5~45℃; 3. Relative humidity of surrounding environment does not exceed 85%; 4. No conductive dust, explosive gases, or gases that can severely damage metals and insulating materials around the furnace.
Safety Protection	1. When using the electric furnace for the first time or after long-term shutdown, baking is required; otherwise, it is easy to cause furnace cracking. 2. Keep clean regularly and check whether the furnace wiring is in good contact. 3. When using the electric furnace, 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. During operation, generally below 300℃, the heating rate should not be too fast, because the furnace chamber is cold at the beginning of heating and needs to absorb a lot of heat.
Friendly Tips	1. To ensure the normal service life of the equipment, please do not run at the rated temperature for a long time. 2. Carefully check and verify the quantity of goods and accessories upon receipt to avoid inconvenience caused by missing or incorrect items. 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℃/min. 5. This furnace has no vacuum sealing structure, so flammable and explosive gases must not be introduced. 6. After this furnace has been used for a period of time, slight cracks may appear in the furnace chamber, which is a normal phenomenon and will not affect usage. At the same time, it can be repaired with alumina coating.

Item

Content

Factory Environment

1. Indoor use;

2. Ambient temperature range: ±5~45℃;

3. Relative humidity of surrounding environment does not exceed 85%;

4. No conductive dust, explosive gases, or gases that can severely damage metals and insulating materials around the furnace.

Safety Protection

1. When using the electric furnace for the first time or after long-term shutdown, baking is required; otherwise, it is easy to cause furnace cracking.

2. Keep clean regularly and check whether the furnace wiring is in good contact.

3. When using the electric furnace, 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. During operation, generally below 300℃, the heating rate should not be too fast, because the furnace chamber is cold at the beginning of heating and needs to absorb a lot of heat.

Friendly Tips

1. To ensure the normal service life of the equipment, please do not run at the rated temperature for a long time.

2. Carefully check and verify the quantity of goods and accessories upon receipt to avoid inconvenience caused by missing or incorrect items.

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℃/min.

5. This furnace has no vacuum sealing structure, so flammable and explosive gases must not be introduced.

6. After this furnace has been used for a period of time, slight cracks may appear in the furnace chamber, which is a normal phenomenon and will not affect usage. At the same time, it can be repaired with alumina coating.

Common Faults & Trouble Shooting

Fault Phenomena	Fault Causes	Troubleshooting Methods
No power indication when turning on the control power switch	Control circuit issue, blown fuse, or no power supply	Check for short circuits, rectify, and replace the fuse
Voltage present but no current during equipment operation	Heating element broken	Replace the heating element
Instrument PV display shows the maximum temperature for the corresponding thermocouple type	Thermocouple short circuit	Replace the thermocouple
All power supplies normal but furnace does not heat up	Main control circuit damaged	Notify a qualified technician for repair