Induction Soldering Brass and Copper Components
A customer contacted THE LAB at Ambrell because they were soldering brass and copper components with a torch, but wanted to see if induction might be...
Hermetic sealing is the process of creating a container of some sort that is airtight. That means that any material in the container, whether it's a gas, liquid, or solid, will not leak from the container. Hermetic sealing is commonly used to encase electrical mechanisms, as well as to contain functional gases.
Types of Hermetic Sealing
There are many different types of airtight seals that have various applications depending on the industry it's being used for.- Glass-to-Metal
These types of seals are used when joining glass to a metal surface, hence the name glass-to-metal. Often used for common household items such as halogen or neon light bulbs, the process seals the glass to a metal surface to contain the gas. There are two types of glass-to-metal seals; which process is used depends on the type of materials being used.
- Matched Seals: Used in light bulbs mainly, matched seals are formed when the glass and the metal have the same coefficient of thermal expansion. The seal's strength is sourced from the bond between the glass and the formations of oxide on the metal. This type of seal tends to be weaker since it cannot withstand high-pressure fluctuations between the two materials.
- Compression Seals: These seals are the stronger of the two and can withstand high-pressure differentials and types of physical stress such as shock. Alternatively to matched seals, compression seals take place when the coefficients of thermal expansion are different and therefore the metal forms around the glass.
- Ceramic-to-Glass
This seal is a high-pressure alternative to glass seals and is often used in applications that put large amounts of stress on the seal itself. - Epoxy Seals
Epoxy resins are often used in vacuum seals and are commonly used to seal copper, brass, and other materials. They allow for more design flexibility but have a much smaller window of temperature variation and therefore epoxy seals are only feasible in certain applications.
If you're looking to use EASYHEAT induction systems for your heating needs, contact us today at sales@ambrell.com for further information.
Ambrell Returns to MOTEK in Stuttgart
Ambrell is pleased to return to MOTEK and Bondexpo (04-07 October) in Stuttgart, Germany. Our stand will be located in hall 5, stand 5414, and we...
Induction Heating Steel Assemblies for Sealing
A manufacturer of plastic filtration devices came to THE LAB at Ambrell to see if induction might be a more efficient heating method for their...