Vacuum Atmosphere Furnace

LYL-17JQL Pit-Type Vacuum Atmosphere Furnace

DESCRIPTION:

Model No: LYL-17JQL
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)

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PRODUCT INTRODUCTION

Equipment Introduction

The LYL-17JQL Pit Type Vacuum Atmosphere Furnace incorporates advanced technologies and is an independently developed, energy-saving, environmentally friendly, and novel electric furnace. It features an advanced, rational structure with an elegant appearance. The outer shell is constructed from high-quality cold-rolled steel plates processed by CNC machine tools and finished with a luxurious, aesthetic dual-color imported epoxy powder electrostatic spray molding process, offering high-temperature and corrosion resistance. It utilizes high-quality resistance wire/silicon carbide rods/silicon molybdenum rods as heating elements, combined with a double-layer furnace shell and air insulation layer to maintain a low surface temperature. The furnace boasts advantages such as uniform temperature distribution, low surface temperature, adjustable heating rates, and energy efficiency. The furnace chamber is constructed from ceramic fiber materials using CNC technology, providing strong thermal shock resistance, excellent resistance to rapid cooling and heating, good corrosion resistance, and preventing collapse, crystallization, or slagging. It ensures no pollution and a long service life.

The control system adopts microcomputer artificial intelligence regulation technology, featuring PID adjustment, fully automatic control, and self-tuning functions. It supports multi-stage program programming for various heating, soaking, and cooling cycles, ensuring high temperature control accuracy. It employs integrated module thyristor (SCR) control with phase-shift triggering. The protection system features independent safeguards against over-temperature, over-pressure, over-current, leakage, and short circuits. With a high degree of automation, all indicators have reached advanced levels.

The equipment features an attractive appearance, reasonable structure, and simple, convenient operation.

Product Features

Shell: Constructed from high-quality cold-rolled steel with a special double-layer design. The shell finish is baked at high temperatures for durability.
Insulation: Air insulation ensures a balanced temperature field, low surface temperature, and fast heating rates.
Vacuum System: Specially designed for convenient operation, high vacuum degree, and minimal leakage (Ultimate vacuum: 10⁻⁵ Pa).
Sealing System: Utilizes stainless steel flanges sealed with high-temperature resistant O-type silicone rubber rings. Gas flow is controlled via a needle valve after passing through a flowmeter. Equipped with intake valves, exhaust valves, and vacuum valves, it supports the filling of inert gases such as nitrogen and argon.
Furnace Chamber: Constructed from imported composite alumina fiber material using special processes, saving 60% energy compared to traditional electric furnaces.
Control System: Adopts microcomputer artificial intelligence regulation technology with multi-segment program programming for heating, soaking, and cooling cycles, ensuring high precision. Features crystal modular thyristor control and phase-shift triggering with high-quality heating elements.
Control Panel: Digitalized control panel with protection functions against over-temperature, over-pressure, over-current, thermocouple breakage, and power failure.

Temperature Categories: 1000℃, 1200℃, 1400℃, 1600℃, 1700℃, 1800℃.

Main Application

This series of equipment is suitable for scientific research institutions, universities, industrial and mining enterprises, serving as ideal equipment for experiments and production. It is mainly used for high-temperature precision annealing, microcrystallization, ceramic glaze preparation, mold annealing, powder metallurgy, plastic powder experiments, sintering of nanomaterials, metal part quenching, and all heat treatment processes requiring high temperatures.

Qualification & Honor

Quality Management System Certification GB/T19001:2016/ISO 9001:2015; EU CE Certification; "Luoyang Civilized and Integrity Operation Demonstration Enterprise"; "Leading Brand in China's Electric Furnace Industry"; "Quality, Service, and Reputation AAA Enterprise". Products withstand testing by professional inspection agencies; third-party appraisal certificates can be issued upon request.

Main Functions & Features

Energy Saving & Eco-friendly: Uses high-purity composite alumina/ceramic polycrystalline fiber chamber materials, which are lightweight, have low heat storage, and are energy-efficient (averaging half-power operation).
Convenient Replacement: Equipped with high-quality resistance wire/silicon carbide rods/silicon molybdenum rods as heating elements, featuring long service life and easy replacement.
Integrated Design: User-friendly and flexible operation, less prone to wiring disconnection, saves operational space.
High Precision: Utilizes superior quality instruments with temperature control accuracy of ±1℃; instruments can be supplied with third-party inspection certificates.
Excellent Uniformity: Reasonable layout ensures a balanced temperature field with no dead corners in the furnace cavity.
Programmable Control: Microcomputer program control with adjustable heating rates; automatic operation requires no human attendance.
Safety Protection: Automatic alarms and protection for over-temperature, over-pressure, over-current, leakage, thermocouple breakage, and heating element breakage.
Furnace Door: Openable and closable door for convenient loading and unloading of the furnace tube.
Wide Application: Widely used in universities, research institutes, and industrial enterprises for powders, military industry, electronics, metallurgy, pharmaceuticals, ceramics, glass, machinery, new material development, special materials, refractory materials, building materials, chemical engineering, metal sintering, and metal heat treatment for both experiments and production.
Double-layer Shell: Features an air convection insulation layer.
Aesthetic Appearance: Plastic-sprayed shell with a dual-color design.
Reputation: Excellent reputation with a large customer base.
Service: High cost-performance ratio, comprehensive after-sales service, 1-year warranty, and lifetime on-site repair service.

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 Element	High-quality imported resistance wire / Quality U-type silicon carbide rod / 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 curve, no need for supervision (Fully automatic heating, holding, power off when door opens)
Temperature Measuring Element	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
Flowmeter	Float flowmeter
Permissible Gas	Inert protective gases such as nitrogen, argon, oxygen can be introduced
Oxygen Content in Chamber	Continuous monitoring of oxygen content inside the furnace chamber, detecting oxygen content ≤1000ppm
Furnace Door Structure	Front door side opening
Heat Dissipation Method	Double-layer shell, air insulation layer
Surface Temperature Rise	≤30℃
Accessories as per model	2 heating rods, 2 tongs, 1 crucible tongs, 1 pair of heat-resistant gloves, 1 copy of manual and certificate

Selection Guide

Model	Heating Zone Length (mm)	Furnace Tube Diameter (mm)	Power Supply Voltage (V)	Power (KW)	Temperature Control Accuracy
LYL-17JQL -100/X	100	30/40/60/80/100/120/150	220/380	4-35	±1℃
LYL17JQL -150/X	150	30/40/60/80/100/120/150	220/380	4-35	±1℃
LYL-17JQL -200/X	200	30/40/60/80/100/120/150	220/380	4-35	±1℃
LYL-17JQL -300/X	300	30/40/60/80/100/120/150	220/380	4-35	±1℃
LYL-17JQL -400/X	400	30/40/60/80/100/120/150	380	4-35	±1℃
LYL-17JQL -500/X	500	30/40/60/80/100/120/150	380	4-35	±1℃
LYL-17JQL -600/X	600	30/40/60/80/100/120/150	380	4-35	±1℃
LYL-17JQL -800/X	800	30/40/60/80/100/120/150	380	4-35	±1℃
LYL-17JQL -1200/X	1200	30/40/60/80/100/120/150	380	4-35	±1℃
LYL-17JQL -1500/X	1500	30/40/60/80/100/120/150	380	4-35	±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.

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