G3 Gas pressure Vertical Sintering Furnace

Gas pressure sintering furnaces are particularly useful for sintering ceramics or metals that tend to decompose at high temperatures or do not sinter to high densities in standard sintering operations. This process has no limitations of hot pressing in terms of making the shape of the part, and it is also an alternative to the expensive HIP process.

Technical Data

G3 Vertical Gas Pressure Sintering Furnace
Equipment FormVertical
Loading methodVertical upper loading
Working SizeΦ300 * 500 mm(Diameter*Height)
Working Temperature1900ºC
Temperature Accuracy±1ºC
Temperature uniformity±5ºC
Max.Working Pressure9.8MPa
Max. working pressure9.0MPa
Heating ElementGraphite
Max.Vacuum5 Pa(empty furnace, cold state, purified)
Pressure Rise Rate≤2.0Pa/h(Empty furnace, cold state)
Cooling MethodNatural cooling or Forced gas cooling
AtmosphereHigh Purity Nitrogen or Argon
Control MethodPLC+HMI


The gas pressure sintering furnace is mainly used by enterprises for hot isostatic pressing sintering of ceramics (such as silicon carbide, zirconia, alumina, silicon nitride, etc.) and metal materials (such as cemented carbide) under the condition of high pressure protective atmosphere. It is also suitable for pilot production in colleges, universities and scientific research institutions. It is suitable for sintering silicon nitride ceramic balls, ceramic tools and other materials in high pressure nitrogen or argon atmosphere. It is beneficial to increase the sintering density and improve the mechanical properties of the material. 

Welcome to contact us for the high quality gas pressure sintering machine for sale!


Gas pressure sintering furnace features

1. The gas pressure sintering equipment is designed and manufactured according to the requirements of class 3 pressure vessel standards, and 16MnR or 304 furnace shell is adopted.

2. The door lock of the furnace is a bolt or tooth meshed quick release flange, which is easy to operate, safe and reliable.

3. The furnace cover is lifted and lowered by electro-hydraulic method, which is easy to operate and reduces labor intensity.

4. The insulation material in the furnace is carbon deposition composite hard felt, and the heating element is graphite imported from Germany.

5. The temperature measuring element adopts the ultra-high temperature protective tube developed by our company, which is matched with tungsten rhenium thermocouple, and the service life of thermocouple wire is up to half a year.

6. The control system is plc+ touch screen, with complete safety interlock protection and alarm functions.

7. The high-pressure valves and pipelines are all American "Swagelok" brand or equivalent imported products, which are safe and reliable.

Gas pressure sintering furnace applications

Oxide Ceramics

Transparent Ceramics

Silicon Nitride

Cemented Carbide

Main Ingredients


What is gas pressure sintering?

Gas pressure sintering, also known as GPS technology, is dewaxing at low pressure, sintering at normal pressure, and after reaching a state where only closed pores exist in the material, sintering is performed at high pressure to further densify and eliminate remaining pores faster . Materials produced using GPS technology outperform non-porous materials produced by conventional sintering methods in general mechanical properties.

How does a gas pressure sintering furnace work?

The sintering process compacts the powder into a solid by applying heat or pressure. The material is heated to a temperature below the melting point in a sintering furnace, causing the powder particles to bind together to form a dense mass.

What is the difference between annealing and sintering?

In the field of glass and ceramics, annealing refers to the stress relief of glass by heating it below its glass transition temperature. Sintering refers to the coalescence of powders by softening under the influence of heat treatment.


  • Tel: +86 21 5109 5281

  • Email:

  • Office Add: Building B2, 7301 Jiasong North Road, Jiading District, Shanghai

    Factory Add: No.1 Jufeng Science and Technology Industrial Park, Tongzhou District, Nantong Jiangsu