Outgassing is the release of trapped gas or vapor that are dissolved, trapped, frozen, or absorbed in the materials being heat-treated in a vacuum system. Outgassing includes sublimation and evaporation which are phase transitions of a substance into a gas, ...
Vacuum Furnace End-User Q&A Community Latest Articles
What is the working principle of a multi-stage roots vacuum pumps?
Roots vacuum pumps are dry, gas transfer pumps that do not introduce oil or water into the pumped gas stream. The gas transfer is achieved by the mechanical transfer of pumped gas molecules. Generally referred to as booster pumps, they’re ...
How do you match a primary and secondary pump?
This blog describes the factors involved in matching primary pumps to support the continuous operation of secondary pumps and to ensure safe and optimized performance. The consequences arising from a wrong combination or “matching” of primary and secondary pumps can ...
How do you calculate evacuation time for a vacuum chamber?
When you’re designing a vacuum system, it is important to select a vacuum system that will evacuate the chamber and associated piping in a prescribed amount of time. This is essential in a production environment where the time to complete ...
When should you use direct versus indirect gauges?
Selecting the correct vacuum gauge is essential for the success of a heat treat process. It is important to know how direct and indirect gauges work and what options are available so that a heat treater can make the right ...