• Vacuum sintering
• Vacuum brazing
• Vacuum hardening

Processes such as brazing, sintering or annealing metals require an oxygen-free atmosphere. They are carried out in a vacuum, sometimes using inert gas, which prevents oxidation of the workpieces.

During sintering, the vacuum environment increases the material density and strength of the components, while at the same time reducing porosity. The improved surface quality significantly minimizes subsequent processing.

Vacuum brazing produces particularly strong brazed joints that guarantee high joint quality. The process also offers excellent reproducibility.

Vacuum hardening reduces the distortion of the components and produces a particularly high-quality surface. This then enables direct nitriding - without any additional pre-treatment.

Requirements

Accuracy and repeatability of the pressure measurement are essential to ensure long-term process stability. Constant monitoring is required to ensure that the vacuum in the ovens remains constant throughout the entire process.

Suitable Products

VSH: Smartline transducer with Pirani / Bayard-Alpert combination sensor. The transducers offer the large measuring range required for this application and can measure the pressure at the inlet and outlet nozzles of the furnace with high accuracy. Networking with the system control via the RS485 interface and the visualization of measurement curves in a diagram allow precise control of the pressure gradient in the oven at all times.

VD850: The compact vacuum meter with Piezo/Pirani sensor is ideal for process monitoring. The digital vacuum meter measures absolute and relative pressure over 7 decades in the rough and fine vacuum range. It offers excellent long-term stability and stable measuement values thanks to optimized temperature compensation. The large graphic display shows current measurement values and the internal data logger stores several separate measurement series with their RTC data.