Heating furnace HTC series

sinteringlaboratorystainless steel

Overview
The HTC series (models HTC 16/16 to HTC 450/16) are chamber high‑temperature furnaces heated from both sides by vertically mounted SiC rods. They are designed for sintering and heat‑treatment processes with a maximum operating temperature of 1550 °C (recommended maximum working temperature approx. 50 °C below Tmax). The basic construction corresponds to the HT product line and allows a range of retrofit options.

Function and suitability
These furnaces are intended for sintering applications (e.g. zirconia) and processes where reduced interaction between charge and heating elements is required. Design highlights include long‑life roof insulation, fibre insulation with special backing, and options for process gas purge and exhaust handling to support industrial production environments.

Features

• Tmax 1550 °C; recommended working temperature ≈50 °C below Tmax to limit wear
• Heating from both sides via vertically mounted SiC rods
• Dual‑shell ventilated stainless steel housing for low external surface temperature and structural stability
• Fibre insulation with special backing and long‑life roof suspension (no RCF/alumino‑silicate wool used)
• Temperature uniformity at 1450 °C up to ±6 °C (DIN 17052‑1)
• Chain‑guided parallel swivel door for defined opening/closing without damaging insulation
• Two‑door design (front/back) available for larger models
• Labyrinth door sealing to minimise heat loss at the door area
• Reinforced floor to protect insulation and allow heavy loads (surface load example: 5 kg/dm²)
• Vapour vent in the furnace roof with motorised exhaust flaps and stainless steel exhaust hood as interface to customer extraction
• Controller P570 (touch operation, 50 programs × 40 segments) and NTLog Basic for process data recording via USB

Technical specifications (selected models)
HTC 16/16 | Tmax 1550 °C | Inner 200 × 300 × 260 mm | Volume 16 l | Outer 820 × 690 × 1860 mm | Heating power 12.0 kW | Connected load 16.5 kW | 3‑phase | Weight 220 kg
HTC 40/16 | Tmax 1550 °C | Inner 300 × 350 × 350 mm | Volume 40 l | Outer 1010 × 800 × 1990 mm | Heating power 12.0 kW | Connected load 16.5 kW | 3‑phase | Weight 420 kg
HTC 64/16 | Tmax 1550 °C | Inner 400 × 400 × 400 mm | Volume 64 l | Outer 1140 × 890 × 2040 mm | Heating power 18.0 kW | Connected load 41.5 kW | 3‑phase | Weight 660 kg
HTC 128/16 | Tmax 1550 °C | Inner 400 × 800 × 400 mm | Volume 128 l | Outer 1140 × 1280 × 2040 mm | Heating power 26.0 kW | Connected load 61.0 kW | 3‑phase | Weight 550 kg
HTC 160/16 | Tmax 1550 °C | Inner 500 × 550 × 550 mm | Volume 160 l | Outer 1250 × 1040 × 2260 mm | Heating power 21.0 kW | Connected load 40.0 kW | 3‑phase | Weight 535 kg
HTC 276/16 | Tmax 1550 °C | Inner 500 × 1000 × 550 mm | Volume 276 l | Outer 1340 × 1600 × 2290 mm | Heating power 36.0 kW | Connected load 73.0 kW | 3‑phase | Weight 1300 kg
HTC 450/16 | Tmax 1550 °C | Inner 500 × 1150 × 780 mm | Volume 780 l | Outer 1380 × 1820 × 2570 mm | Heating power 64.0 kW | Connected load 118.0 kW | 3‑phase | Weight 1450 kg

Additional equipment

• Controlled cooling system (temperature gradient or preset fresh air volume, switchable by controller segments)
• Thermocouple inlet with screw cap and calibrated thermocouple for heating control
• Protective‑gas connection for inert/non‑flammable process gases (not fully gas‑tight)
• Automatic gas supply with solenoid valve and rotameter, controllable by controller extra function
• Refractory brick floor insulation for higher floor load (Tmax up to 1700 °C)
• Lift door and automatic door lock including door contact switch
• Heating element protection against mechanical damage; special heating element variants for specific applications
• Ethernet interface

Specifications

• Heating method: vertically mounted SiC rod heating (both sides)
• Insulation: fibre insulation with special backing; suspended roof insulation; no RCF materials
• Construction: dual‑shell ventilated stainless steel housing; reinforced floor; labyrinth sealing
• Control & data: P570 touch controller (50 programs × 40 segments); NTLog Basic via USB
• Process options: protective gas purge, automatic gas supply, thermocouple feedthroughs, cooling systems, refractory brick floor
• Temperature uniformity: ±6 °C at 1450 °C (DIN 17052‑1)