ZHENGZHOU HENGTONG FURNACE CO,. LTD
High-Temp Top-Loading Sintering Furnace – Vacuum/Gas Compatible, Precision Control
  • High-Temp Top-Loading Sintering Furnace – Vacuum/Gas Compatible, Precision Control
  • High-Temp Top-Loading Sintering Furnace – Vacuum/Gas Compatible, Precision Control
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High-Temp Top-Loading Sintering Furnace – Vacuum/Gas Compatible, Precision Control

Our small vacuum sintering furnace is the top loading furnace .It is a popular choice for small batch processing. This furnace has a standard hot zone of 4″ diammeter by 8″ high with many other sizes available. This furnace has a maximum temperature of 2500°C with a tungsten hot zone, 2100°C with a tantalum hot zone, and 1650°C for molybdenum.

Our small vacuum sintering furnace is the top loading furnace .It is a popular choice for small batch processing. This furnace has a standard hot zone of 4″ diammeter by 8″ high with many other sizes available.

This furnace has a maximum temperature of 2500°C with a tungsten hot zone, 2100°C with a tantalum hot zone, and 1650°C for molybdenum.

The hot zone provides excellent temperature uniformity and longevity. This furnace comes equipped with an intuitive HMI control package providing features such as automated runs, process overviews, data-acquisition, alarms, unlimited recipe profiles for temperature control, user security, etc. Classic push-buttons and discrete controllers are also available. 


Features:

High-Temperature Versatility: Reaches up to 2500°C with tungsten hot zones (tantalum/molybdenum/graphite options) for diverse sintering needs.

Flexible Environments: Operates in high vacuum (10-7 Torr), positive/partial pressures (e.g., H₂, N₂, Ar) with NFPA-compliant safety for flammables.

Advanced Controls: Intuitive HMI manages temp (auto-switching sensors), vacuum/gas systems, and data logging; optional manual controls available.

Robust Design: Double-walled stainless steel chamber with layered heat shields, removable load assemblies, and multiple utility ports.

Safety & Efficiency: Water cooling (≤45°C exterior), pressure relief systems, and rapid vacuum pumping minimize oxygen exposure.

Customizable Utilities: Adaptable power (40 kVA), water, and gas inputs to fit specific operational requirements.

Category

Specifications

CHAMBER AND HOT ZONE

Hot zone materials and maximum temperatures:

- Tungsten: 2500°C

- Tantalum: 2100°C

- Optional: Molybdenum, graphite

- Hot zone structure: Top-loading cylindrical chamber, made of double-walled stainless steel; fully welded and polished for vacuum integrity and appearance

- Heat shields: Layered heat shields surrounding the load and heating element to reduce power loss

- Load assembly: Removable, manufactured from hot zone material (when material compatibility is required)

- Ports: Multiple ports for sensors, vacuum, gas, hot zone power, and a sight window

PROCESS GAS SYSTEM

- Operable environments: Positive pressure gas environments, partial pressures (below atmosphere) of gases (e.g., dry/wet hydrogen, dissociated ammonia, nitrogen, argon)

- Maximum operating pressure: 5 PSIG

- Safety components: Pressure relief valve, 30/30 compound gauge (located on top chamber)

- Special features for flammable gases: Gas burn-off and explosion port (compliant with NFPA requirements)

- Flow control: Optional mass flow controllers for programmable gas flows (alternative to manual controls)

VACUUM SYSTEM

Pumping capability: Turbo high pumping system capable of reaching 10-7 Torr vacuum range

- Components:

- Rotary vane pump with exhaust filter (for rough vacuum and turbo pump backup)

- Turbo pump (other pumps available for high vacuum)

- Electro-pneumatic vacuum valves (for system operation or chamber isolation)

- Relief valve (to release vacuum/pressure or leak check)

- Control: PC interface screens for operation and status monitoring

POWER SUPPLY

 Control type: SCR-controlled transformer package (enables high ramp-up speeds up to 2500°C)

- Transformer feature: Multiple secondary voltage tabs (prevents performance degradation due to hot zone aging)

- Enclosures: Furnace controls in control enclosure; circuit breakers, contactors, instruments, and wires in power supply enclosure

- Regulation: Hot zone power and temperature controlled via HMI system

UTILITIES

Power: 40 kVA, 380-480V/3/50-60 Hz (other voltages available)

- Water: 8 G.P.M. (30 lpm) @ 20°C (70°F) and 50 PSIG (3.4 bar)

- Process Gas (Ar, N₂, He): 30-60 L.P.M. @ 50 PSIG (3.4 bar)

- Reducing Gas (H₂, NH₃): 30-60 L.P.M. @ 50 PSIG (3.4 bar)

- Compressed Air: 60-90 PSIG (4.1-6.2 bar) (filtered)



Our small vacuum sintering furnace is the top loading furnace .It is a popular choice for small batch processing. This furnace has a standard hot zone of 4″ diammeter by 8″ high with many other sizes available.

This furnace has a maximum temperature of 2500°C with a tungsten hot zone, 2100°C with a tantalum hot zone, and 1650°C for molybdenum.

The hot zone provides excellent temperature uniformity and longevity. This furnace comes equipped with an intuitive HMI control package providing features such as automated runs, process overviews, data-acquisition, alarms, unlimited recipe profiles for temperature control, user security, etc. Classic push-buttons and discrete controllers are also available. 


Features:

High-Temperature Versatility: Reaches up to 2500°C with tungsten hot zones (tantalum/molybdenum/graphite options) for diverse sintering needs.

Flexible Environments: Operates in high vacuum (10-7 Torr), positive/partial pressures (e.g., H₂, N₂, Ar) with NFPA-compliant safety for flammables.

Advanced Controls: Intuitive HMI manages temp (auto-switching sensors), vacuum/gas systems, and data logging; optional manual controls available.

Robust Design: Double-walled stainless steel chamber with layered heat shields, removable load assemblies, and multiple utility ports.

Safety & Efficiency: Water cooling (≤45°C exterior), pressure relief systems, and rapid vacuum pumping minimize oxygen exposure.

Customizable Utilities: Adaptable power (40 kVA), water, and gas inputs to fit specific operational requirements.

Category

Specifications

CHAMBER AND HOT ZONE

Hot zone materials and maximum temperatures:

- Tungsten: 2500°C

- Tantalum: 2100°C

- Optional: Molybdenum, graphite

- Hot zone structure: Top-loading cylindrical chamber, made of double-walled stainless steel; fully welded and polished for vacuum integrity and appearance

- Heat shields: Layered heat shields surrounding the load and heating element to reduce power loss

- Load assembly: Removable, manufactured from hot zone material (when material compatibility is required)

- Ports: Multiple ports for sensors, vacuum, gas, hot zone power, and a sight window

PROCESS GAS SYSTEM

- Operable environments: Positive pressure gas environments, partial pressures (below atmosphere) of gases (e.g., dry/wet hydrogen, dissociated ammonia, nitrogen, argon)

- Maximum operating pressure: 5 PSIG

- Safety components: Pressure relief valve, 30/30 compound gauge (located on top chamber)

- Special features for flammable gases: Gas burn-off and explosion port (compliant with NFPA requirements)

- Flow control: Optional mass flow controllers for programmable gas flows (alternative to manual controls)

VACUUM SYSTEM

Pumping capability: Turbo high pumping system capable of reaching 10-7 Torr vacuum range

- Components:

- Rotary vane pump with exhaust filter (for rough vacuum and turbo pump backup)

- Turbo pump (other pumps available for high vacuum)

- Electro-pneumatic vacuum valves (for system operation or chamber isolation)

- Relief valve (to release vacuum/pressure or leak check)

- Control: PC interface screens for operation and status monitoring

POWER SUPPLY

 Control type: SCR-controlled transformer package (enables high ramp-up speeds up to 2500°C)

- Transformer feature: Multiple secondary voltage tabs (prevents performance degradation due to hot zone aging)

- Enclosures: Furnace controls in control enclosure; circuit breakers, contactors, instruments, and wires in power supply enclosure

- Regulation: Hot zone power and temperature controlled via HMI system

UTILITIES

Power: 40 kVA, 380-480V/3/50-60 Hz (other voltages available)

- Water: 8 G.P.M. (30 lpm) @ 20°C (70°F) and 50 PSIG (3.4 bar)

- Process Gas (Ar, N₂, He): 30-60 L.P.M. @ 50 PSIG (3.4 bar)

- Reducing Gas (H₂, NH₃): 30-60 L.P.M. @ 50 PSIG (3.4 bar)

- Compressed Air: 60-90 PSIG (4.1-6.2 bar) (filtered)