Stainless Steel Body Vacuum Furnace LYL-18UZL

Brief Introduction

The LYL-18ZTL series large high-vacuum, high-temperature vacuum furnace is primarily used for processes such as vacuum sintering and quenching of hard alloys, magnetic materials, ceramics, and powder materials. Its design, tailored for high-temperature sintering processes, ensures reliability in thermal and electrical insulation. The innovative electrode structure eliminates the risk of water leakage, and vulnerable parts in the heating system are designed for easy maintenance and replacement.

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.

Structure Description

1. The carbon steel outer shell is welded by a certified pressure vessel factory, ensuring air-tight welds with no leaks from pores or cracks.

   
   

2. A double-layer furnace shell is constructed as required, sealed with O-ring silicone gaskets.

   
   

3. The furnace door seal utilizes a wire-cut flange with an embedded O-ring silicone gasket, secured by a handwheel.

   
   

4. The furnace chamber can be either square or cylindrical, with an optional electric door opening mechanism.

   
   

5. The furnace shell exterior features electrostatic spray painting for rust prevention, offering an aesthetically pleasing appearance.

   
   

6. The furnace chamber is made of alumina polycrystalline fiber, combining an attractive look with energy efficiency.

   
   

7. Well-known brand electrical components are employed to ensure safety and reliable performance.

   
   

8. Temperature control and measurement exclusively use:

   
   

• Single Platinum-Rhodium (Type S) thermocouples for temperatures ≤1500°C;

  
  

• Dual Platinum-Rhodium (Type B) thermocouples for temperatures ≤1800°C.

Vacuum System Description

1. The vacuum system is a diffusion pump unit: consisting of a diffusion pump + a rotary vane Roots vacuum pump. The pumping system comprises a high-vacuum diffusion pump, water-cooled baffle, rotary vane vacuum pump, electromagnetic vacuum valve with gas inlet, high-vacuum pneumatic gate valve (main valve), high-vacuum pneumatic gate valve for roughing, high-vacuum pneumatic gate valve (outlet valve), roughing line gas inlet valve, connecting pipelines, sealing rings, a compound vacuum gauge, and a power distribution cabinet.

   
   

2. This unit is not suitable for pumping gases corrosive to metals or chemically reactive with pump oil. It can serve as a high-vacuum acquisition device for high-tech applications such as vacuum smelting, vacuum sintering, vacuum heat treatment, vacuum coating, vacuum brazing, and space simulation experiments. Operating environment: temperature 5~40°C, relative humidity ≤85%, cooling water temperature 25°C ±5°C.

   
   

3. The achievable vacuum level is related to the pumping capacity of the vacuum pumps, the chamber's airtightness, and the outgassing from internal materials (furnace liner, experimental fixtures, heat sinks, etc.). This unit's ultimate pressure is 1×10⁻³ Pa, with an operating pressure of 1×10⁻² Pa. Pumping time is approximately 1 hour.

   
   

4. The diffusion pump cannot operate alone; a roughing pump must first lower the system pressure to the level required for diffusion pump start-up, typically ≤10 Pa.

   
   

5. A modern water-cooled baffle is installed at the diffusion pump inlet, effectively preventing oil vapor from the diffusion pump from back-streaming into the vacuum chamber and contaminating the experimental apparatus.

   
   

6. To prevent vacuum oil from the roughing pump from flowing back into the diffusion pump cavity upon pump shutdown, an electromagnetic valve is installed at the roughing pump inlet, automatically isolating the system piping when the pump stops.

   
   

7. All valves are pneumatically operated for ease of use.

   
   

8. A roughing bypass is included in the system. During initial pumping, gas is extracted directly by the roughing pump, bypassing the diffusion pump. This prevents contamination (moisture, volatiles, impurities) of the diffusion pump by the gas from the chamber. When the chamber pressure drops to 10 Pa, the roughing valve is closed, the baffle valve is opened, and the diffusion pump begins normal pumping of the chamber.

Qualifications & Honors

• 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

1. Wide Temperature Range: 800°C - 1800°C (selectable)

   
   

2. High Vacuum Capability: Up to 10⁻³ Pa achievable (selectable)

   
   

3. Energy Efficient & Eco-friendly: Furnace chamber made of high-purity composite alumina/ceramic polycrystalline fiber; lightweight, low thermal mass, energy-saving, typically operating at half power on average.

   
   

4. Easy Maintenance & Time-Saving: Heating elements are high-quality resistance wire / silicon carbide (SiC) rods / molybdenum disilicide (MoSi₂) rods, featuring long lifespan and easy replacement.

   
   

5. Integrated Control: User-friendly operation with a more ergonomic design.

   
   

6. High Temperature Control Accuracy: High-quality controller with precision of ±1°C. Third-party test certificates for the controller are available.

   
   

7. Excellent Temperature Uniformity: Rational layout ensures a balanced temperature field with no dead zones in the chamber.

   
   

8. Intelligent Temperature Control: Adjustable heating rates and automatic operation.

   
   

9. Automatic Protection: Safeguards against over-temperature, over-voltage, and over-current.

   
   

10. Flexible Gas Control: Optional float or mass flow meters for manual or automatic gas flow control. Gas flow can also be shut off.

    
    

11. Wide Application Range: Suitable for experiments and production in universities, research institutes, and industrial enterprises involving powders, military industry, electronics, metallurgy, pharmaceuticals, ceramics, glass, machinery, new material development, special materials, refractory materials, building materials, chemicals, metal sintering, and metal heat treatment.

    
    

12. Double-Layer Shell with Air Insulation: (Chiller unit optional)

    
    

13. Aesthetic Exterior: Powder-coated casing with an elegant two-tone color scheme.

    
    

14. Excellent Reputation: Numerous satisfied customers.

    
    

15. Great Value & Service: Competitive cost-performance, comprehensive after-sales service, 1-year warranty, lifetime on-site maintenance.

Main Technical Parameters

Selection Guide

Standard Accessories

Optional Accessories List

Special Note

Common Faults & Trouble Shooting