Application fields of lifting bell jar furnace

The lifting bell jar furnace (also known as the bell jar furnace) plays a key role in multiple industrial fields due to its high temperature performance, temperature uniformity, and controllable atmosphere environment. The specific application areas are as follows:

1. Advanced Ceramic and Glass Materials
High performance ceramic sintering
Alumina/zirconia ceramics: used for densification sintering of electronic substrates and bioceramics (such as dental implants) to enhance mechanical strength and insulation properties.
Nitride ceramics (such as silicon nitride): sintered under nitrogen or argon protection to manufacture high-temperature bearings, cutting tools, and optimize fracture toughness.
Transparent ceramics: By sintering alumina in a hydrogen atmosphere, the porosity is reduced and the light transmittance is higher. They are used in high-pressure sodium lamps and infrared windows.
Glass melting and forming
Quartz glass: melted in vacuum or argon gas to reduce bubbles and impurities, used in optical fibers and lasers.
Optical glass: such as calcium fluoride crystals, control the cooling rate to optimize the uniformity of transmittance and refractive index.

2. Metal material processing
Heat treatment of superalloy
Nickel based/titanium based alloys: annealed in vacuum or hydrogen atmosphere to relieve stress and enhance the creep resistance of aircraft engine turbine blades.
Precision brazing: achieving non oxidative welding of micro electronic components (such as sensors) in an inert atmosphere to avoid impurity doping.
Active metal processing
Zirconium and hafnium: Used for nuclear reactor structural components, treated in vacuum or argon to prevent oxidation and hydrogenation.
Beryllium: a lightweight structural material for aviation, which controls the purity of the atmosphere and reduces the generation of toxic beryllium oxide.

3. Powder metallurgy and composite materials
Hard alloy sintering
Tungsten cobalt alloys: sintered in vacuum or hydrogen atmosphere to promote liquid phase flow and improve the density of cutting tools and molds.
Metal ceramics (such as TiC based): controlling carbon content to optimize the balance between hardness and toughness, used for wear-resistant parts.
Metal matrix composite
Aluminum based silicon carbide: sintered in a nitrogen atmosphere to promote uniform distribution of silicon carbide particles and improve the performance of electronic packaging heat sinks.
Titanium based composite materials: control interface reactions and optimize high-temperature strength of aircraft engine blades.

4. Electronics and New Energy Materials
Semiconductor device manufacturing
Silicon based materials: annealed in hydrogen or nitrogen to eliminate wafer stress and improve electrical performance.
Compound semiconductors (such as GaN, SiC): Control the atmosphere composition to prevent impurity doping, used for high-frequency devices.
Lithium Ion Battery Materials
Positive electrode materials (such as NCM, LFP): sintered in an oxygen atmosphere to optimize the crystal structure and increase energy density.
Negative electrode material (such as silicon carbon composite): Control the carbonization temperature to prevent silicon particle agglomeration and improve cycling stability.

5. Magnetic materials and special materials
Soft magnetic and permanent magnetic materials
Ferrite: Low power consumption, high μ value ferrite sintering, applied to the iron core of communication industry transformers.
NdFeB permanent magnet: sintered under argon protection to reduce oxidation and enhance magnetic energy product.
high-temperature refractory
Refractory bricks/ceramic fibers: provide a high-temperature sintering environment to ensure the high-temperature stability and durability of the material.
Industrial synthetic diamonds: high-temperature and high-pressure sintering to meet special industrial needs.

6. Research and customization needs
Laboratory R&D
New material development: Support small-scale trial production and verify process feasibility (such as nanomaterials, gradient functional materials).
Trial firing sample service: The manufacturer provides customized sintering to help users optimize parameters.
Non-standard customization
Special size/shape workpieces: Adjust furnace size, heating power, and atmosphere control system according to requirements.
Multi zone independent temperature control: suitable for uniform sintering of complex structural components (such as irregular metal components).