High-Temperature Chamber Furnaces with Electric or Gas Heating

The HT 04/16 ff. fibre insulated high-temperature furnaces are the ideal choice for sintering special glass, e.g. quartz glass or for melting trials in the laboratory. Excellent temperature uniformity, solid construction provide for the necessary competitive edge with resprect to quality (tabletop models see laboratory catalog).

• Tmax 1600 °C, 1750 °C, or 1800 °C
• Furnace sizes from 4 to 450 liters
• High-quality molybdenum disilicide (MoSi2) heating elements
• Parallel swivel door, chain-guided, enabling safe opening and closing without damage to the fibre insulation in the collar area, protection of user from radiation from the furnace
• Door labyrinth sealing provides for optimum energy efficiency and temperature distribution
• Door area amored with stainless steel to avoid burn damages
• Reinforced floor as protection for bottom insulation as standard from models HT 32/16 upwards
• Over-temperature limit controller for product and furnace protection
• Furnace chamber lined with first-class, durable fibre material
• Special ceiling construction with high durability
• Thermocouple, PtRh-Pt, Type B or Type S
• Vapor vent in the furnace roof
• Description of the control system see page 42

Additional equipment

• Cooling fan For cycle time acceleration furnace sized specific fans are installed. The fan speed is preselected per segment. The controller is automatically switched on and off. Hence, different speeds can be applied e.g. for binder removal or cooling. With HiProSystems-Controllers, lenear cooling is possible.
• Furnace in HDB design featuring fresh air pre-heating, exhaust gas ventilation and an extensive safety package for debinding and sintering in one process, i. e. without transfering the material from the debinding furnace to the sintering furnace.
• Automatic control of vapor vent flaps
• Stainless steel exhaust gas hoods
• Catalytic or thermal afterburners
• Kiln furniture tailored to customer specifications
• Lift door
• Protective gas connector and seal of furnace casing to allow purging of furnace with protective gasses
• Manual or automatic gas supply system

Besides our wide range of electrically heated high temperature chamber furnaces we can also offer gas heated models designed to suit your requirements. Please contact us.

In order to fulfill the high demands regarding a good temperature uniformity, high temperature top-hat and elevator furnaces are used. In the LB version the hat is stationary and the table is mobile. This layout is only recommended if furnace must be opened hot. As additional equipment for opening in hot condition the furnace frame is additionally insulated in order to avoid burns of the system. The LT version with mobile top-hat and stationary table is recommended when sensitive settings are charged.

Standard version different from chamber furnaces HT 04/16 ff.

• Design as top-hat or elevator furnace (lift-top or lift-bottom principle)
• Standard furnace size ranging from 64 to 276 liters
• Electrical top-hat or table spindle drive practically free of vibration
• Furnace closes safely and tightly due to a labyrinth-sealing and additional sand sealing
• Floor reinforcement for heavy loads with level stack charging provides for protection of the fiber insulation

Additional equipment different from chamber furnaces HT 04/16 ff.

• Exchangeable table system with second table
• Electrical table drive
• Automatic control of all movements
• Insulated furnace rack for hot opening, i. e. for melting glass, for instance

Model range HFL 16/16 HFL 160/17 is characterized by its lining with robust light refractory bricks. This version is recommended for processes producing aggressive gases or acids, such as under glass melting.

• Tmax 1600 °C or 1700 °C
• High-quality molybdenum disilicide (MoSi2) heating elements
• Insulation with light refractory bricks and special backup insulation
• Type B thermocouple
• Furnace sizes of 16 to 160 liters
• For the release of vapours, a 30 mm large exhaust hole is integrated into the roof of the furnace
• Over-temperature limit controller for protection of material

Additional Equipment

• Exhaust air flap controlled manually or automatically for better ventilation of furnace chamber
• Fan for better ventilation of combustion chamber and for fast cooling of the furnace
• Protective gas connector and seal of furnace casing to allow purging of furnace with protective gasses
• Manual or automatic gas supply system