The lifting type bell jar furnace, with its structural advantages of adjustable furnace body, controllable closed atmosphere, uniform temperature field, and convenient loading and unloading, is different from conventional heat treatment equipment such as box furnaces and tube furnaces. It relies on hydraulic/electric lifting systems to achieve bell jar lifting, and is suitable for multiple working conditions such as vacuum, inert gas, and oxygen atmosphere sintering and annealing. The temperature control accuracy can reach ± 1 ℃, and the temperature control range covers 800 ℃~1800 ℃. It is the mainstream equipment for high-temperature processing of precision materials. With the rapid expansion of new materials, new energy, and precision electronics industries, the landing industry of lifting bell jar furnaces continues to expand. Below are eight mainstream application industries and landing scenarios to help you quickly match equipment selection!

A commonly used lifting bell jar furnace (click on the image to view product details)

1. Magnetic Materials Industry | Mass Sintering of Ferrite and Permanent Magnet Cores
Magnetic materials are the earliest large-scale application field of lifting bell jar furnaces and also the core heat treatment equipment in the ferrite industry chain. The sealed atmosphere chamber of the equipment can more accurately control the oxygen content and is suitable for sintering production of manganese zinc ferrite, nickel zinc ferrite, neodymium iron boron permanent magnet, and soft magnetic ring.
Application process: powder pressing and gluing → atmosphere sintering → slow cooling and shaping, with nitrogen/nitrogen hydrogen mixed atmosphere protection throughout the process to avoid oxidation and demagnetization of magnetic materials;
Landing products: power transformer magnetic cores, inductor magnetic rings, new energy motor permanent magnets, wireless charging magnets;
Equipment advantages: No need to transport workpieces for lifting and feeding, large magnetic blanks are not easily bumped or damaged, the temperature field in the same furnace is uniform, and the consistency of magnetic permeability of magnetic materials is improved.

2. Electronic ceramic industry | Dense sintering of substrates, capacitors, and piezoelectric components
Electronic ceramics have strict requirements for sintering temperature and atmosphere stability. The lifting bell jar furnace, with its four sided heating and full fiber insulation furnace, has become a standard equipment for mass production of alumina ceramics and piezoelectric ceramics.
Application process: green body degreasing, high-temperature dense sintering, stress annealing;
Landing products: alumina circuit boards, MLCC ceramic capacitor ceramic bodies, piezoelectric ceramic components, high-voltage ceramic insulators, ceramic resistor substrates;
Usage effect: After high-temperature sintering at 1600 ℃, the ceramic has a higher density and a lower cracking rate than traditional kilns, making it suitable for flexible production of small and medium-sized batch orders.

3. New Energy Lithium Battery Materials | Positive and Negative Electrode Materials, Solid Electrolyte Heat Treatment
The rapid development of the new energy power battery industry chain has driven the demand for bell jar furnaces, which are mostly used for laboratory trials and small-scale production of positive electrode materials. They are key equipment for the heat treatment of ternary and lithium iron phosphate powders.
Application process: calcination of precursor under inert atmosphere, solid-state sintering of positive electrode material, sintering of solid-state electrolyte ceramic sheet;
Landing products: ternary NCM positive electrode powder, lithium iron phosphate, solid-state battery ceramic separator, negative electrode silicon carbon composite material;
Process highlights: Precise control of oxygen partial pressure in a closed furnace chamber, ensuring stable material crystal structure, and improving battery cycle life and capacity.

4. Target Materials and Semiconductor New Materials | Vacuum Sintering Annealing of ITO Targets and Metal Targets
The high-purity target material used for flat panel displays and semiconductor coating has a relatively large size and brittle texture, which cannot be transported by a trolley furnace. The structure of a lifting bell jar furnace with a fixed material table and a furnace cover falling down is more suitable for processing large-sized target materials.
Application process: vacuum degreasing, high-temperature sintering, stress relief annealing, with a maximum vacuum degree of 10 ⁻³Pa;
Landing products: ITO indium tin oxide target, copper target, aluminum target, ceramic sputtering target, semiconductor silicon wafer annealing;
Core advantages: The workpiece is fixed and prevents collision during transportation. The high-purity furnace has no impurity precipitation, ensuring that the purity of the target material meets electronic grade standards.

5. Powder metallurgy&MIM metal injection molding | Precision parts degreasing sintering
Powder metallurgy and MIM precision small parts are mainstream processes for automobiles and 3C parts. The lifting bell jar furnace can achieve the integration of degreasing and sintering, and the ammonia decomposition reducing atmosphere avoids oxidation and decarburization of parts.
Application process: MIM green body debonding, stainless steel/hard alloy powder compaction sintering, copper iron powder parts heat treatment;
Landing products: automotive precision gears, hydraulic valve accessories, mobile phone metal frames, hard alloy cutting tool blanks;
Production advantages: The protective atmosphere is sealed and circulated, the surface of the parts is bright and oxidation free, and near net forming reduces subsequent machining costs.

6. Precision metal heat treatment | Bright annealing of copper aluminum stainless steel, quenching and tempering of titanium alloy
Copper strips, copper foils, stainless steel coils, and titanium alloy parts require non oxidizing bright annealing. The closed chamber of the lifting bell furnace is filled with ammonia decomposition gas and hydrogen gas to achieve bright heat treatment of the workpiece.
Application process: copper softening annealing, stainless steel solution treatment, titanium alloy stress relief tempering, precision alloy brazing;
Landing products: enameled wire copper foil, precision connector copper parts, aviation titanium alloy small parts, medical equipment stainless steel spare parts;
Industry value: After heat treatment, there is no blackening or decarburization on the surface of the workpiece, and the conductivity and corrosion resistance are greatly improved.

7. Special structural ceramics&refractory materials | High temperature sintering of zirconia and silicon carbide
Zirconia ceramics and silicon carbide refractory parts can withstand high temperatures above 1500 ℃ and require segmented temperature control and slow temperature rise and fall. The adjustable bell jar furnace can be programmed with 30 temperature control curves, suitable for high-temperature firing of special ceramics.
Application process: zirconia ceramic sintering, silicon carbide crucible/nozzle firing, shaping of high-purity alumina refractory parts;
Landing products: zirconia denture body, ceramic wear-resistant shaft sleeve, laboratory high-purity crucible, industrial refractory shaped parts;
Customization: Square and circular furnaces can be customized according to the size of the workpiece, covering a full range of specifications from laboratory small furnaces to industrial large bell covers.

8. University research institutes&new material research and development | Small batch sample trial production
Major material science colleges, new material research institutes, and testing institutions are generally equipped with small and medium-sized lifting bell jar furnaces for new material formula testing and new process sampling, taking into account multiple experimental conditions such as oxidation, vacuum, and atmosphere.
Application direction: nano powder calcination, new ceramic formula test, superconducting material sintering, research and development of new inorganic material properties;
Equipment features: Small size model with small footprint, one click automatic lifting, program storage for multiple process curves, single loading of tens of grams to hundreds of kilograms, flexible adaptation for research and development of multiple batches of small samples.

Customized lifting bell jar furnace (click on the picture to view product details)

Conclusion at the end of the article
From consumer electronics and magnetic materials to high-precision manufacturing of new energy and semiconductors, the lifting bell jar furnace, with its flexible atmosphere and temperature control capabilities, spans across eight core manufacturing industries and is a universal equipment for precision high-temperature heat treatment. When selecting, the furnace size and lifting drive form (electric/hydraulic) can be customized according to the sintering temperature (1200 ℃/1500 ℃/1700 ℃), usage atmosphere (air/nitrogen/vacuum/hydrogen), and loading tonnage to match the production line or laboratory usage needs.Click to learn more Elevator furnaces! Or click on online customer service to learn more about product information!