Metal-to-Glass Sealing with Induction

Our induction heating systems provide hermetic sealing processes with reliable, repeatable, non-contact and energy-efficient heat, focusing heat to a specific area of the part.

Metal-to-Glass Sealing with Induction

Our induction heating systems provide hermetic sealing processes with reliable, repeatable, non-contact and energy-efficient heat, focusing heat to a specific area of the part.

Our engineering expertise has been applied in the lighting industry and research institutes worldwide. We even offer complimentary applications testing from our Applications Laboratory.

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Induction metal-glass sealing Application Notes

Click to read how induction metal-glass sealing can improve the efficiency, effectiveness and safety of your heating process.

To search all metal-glass sealing notes, Ctrl+F keyword or ⌘+F keyword or scroll


Heating a Kovar tube for a glass sealing applicationHeating a Kovar tube for a glass sealing application

The client was using a torch, and operator error was slowing the heating. The repeatability of induction enables improved throughput while in this process it is a more efficient heating method than torch heating, also reducing scrap

Hermetically sealing glass-enclosed resistorsHermetically sealing glass-enclosed resistors

Induction heating provides precise, consistent heat to very small parts resulting in repeatable, quality seals. By heating with medium frequency, arcing (which occurs at high frequencies) is avoided.

Heating a Kovar Ferrule for Glass SolderingHeating a Kovar Ferrule for Glass Soldering

The solder formed a relatively uniform domed seal around the fiber despite the asymmetry of the open C coil. It took under 10 seconds to heat the part to soldering temperature

Soldering windows to time indicator housingsSoldering windows to time indicator housings

Soldering soda lime glass metal edged windows to steel time

Soldering a kovar piece with glass to a copper base for a photon light sourceSoldering a kovar piece with glass to a copper base for a photon light source

Induction heating provides ability to use same equipment for both assembly and repair, hands-free heating that involves no operator skill for manufacturing, and uniform control of heat from part to part

Hermetic sealing: SS rods & glass preformsHermetic sealing: SS rods & glass preforms

Induction melting provides hands-free heating that involves no operator skill for manufacturing, amounts of glass are precisely controlled by the glass preforms and even flow of glass creates aesthetically pleasing bond.

Stainless Steel HousingStainless Steel Housing

To heat a stainless steel housing to 18750 F in order to fuse a piece of R6 glass to the inside of the housing.

Repair of Glass Lined TankRepair of Glass Lined Tank

To heat selected areas of a glass lined steel tank to 16000 F in order to perform repairs of cracks and chips.

About Induction Heating

Induction heating is a fast, efficient, precise and repeatable non-contact method for heating metals or other electrically-conductive materials. The material may be a metal such as brass, aluminum, copper or steel or it can be a semiconductor such as silicon carbide, carbon or graphite. To heat non-conductive materials such as plastics or glass, induction is used to heat an electrically-conductive susceptor, typically graphite, which then transfers the heat to the non-conducting material.

Read our 4-page brochure; learn more about how the science of induction technology can solve your precision heating problems.

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About Induction Heating

Induction Heating Work Coils

The work coil is the component in the induction heating system that defines how effective and how efficiently your work piece is heated.

Read our informative brochure explaining the fundamentals of induction coils and their design.

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Induction Heating Work Coils

Four Ways To Contact Ambrell for Support

AMBRELL CORPORATION

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AMBRELL Ltd.

Unit 6, Space Business Centre
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