Vacuum furnace with bottom loading mechanism

Vacuum Bottom Loader Furnaces

APPLICATION EXAMPLES

Quenching, annealing, brazing, carbonisation, ceramic injection moulding (CIM), debinding, degassing, drying, hardening, metal injection moulding (MIM), pyrolysis, rapid prototyping, siliconization, sintering, soldering, sublimation, synthesis, tempering

STANDARD FEATURES

Metallic furnaces provide precisely defined atmospheres with the highest possible purity (6 N or better)
Hydrogen partial pressure operation upon request
Precisely controlled vacuum pumping speeds appropriate for use with powders

Fully automatic operation
Data recording for quality management

BOTTOM LOADING FURNACE, METAL INSULATION - HTBL MO/W

TECHNICAL DETAILS

View inside of the HTBL high temperature furnace

Heating elements
Water cooled current
Bottom locking device
Frame
Bottom plate

The HTBL furnace based on metallic materials is equipped with one heating zone (mantle heater) made from tungsten or molybdenum. The radiation shields that provide the heat insulation are constructed of the same material as the heating elements. Standard systems use nine radiation shields surrounding the heating elements. If a lower maximum temperature is required, it is possible to reduce the number of radiation shields. The HTBL, with a diameter of 400 mm and heated length of 500 mm, is well suited for high vacuum processes. Both molybdenum and tungsten exhibit very low vapor pressure even at the highest temperatures. Once the maximum temperature is achieved, the heating elements must be handled with care as they will become brittle.

All HTBL models are equipped with fully automated software and reliable data logging for later evaluation of the process. All process data are measured and logged at predefined intervals. Automated control and high volume units are especially suited for industrial applications and large scale production.

Nitrogen, Argon, and Hydrogen gases are available for use as either pure or mixed gas. Other gases may be installed upon request. A slight overpressure or controlled partial pressure, to establish a defined gas flow, can be used in the furnace. Operation with air is not possible.

Various dosing and controlling devices control all gases. Depending on the vacuum requirements, vacuum pumps are configured specifically for the application or as requested. The temperature is independently controlled to achieve the best uniformity.

Technical Resources