CNC Machining Kovar for Glass to Metal Sealing

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In the demanding fields of aerospace, telecommunications, and highvacuum electronics, the reliable sealing of glass to metal is a critical requirement. This is where Kovar, a specialized nickelcobalt ferrous alloy, becomes indispensable. Its unique property of having a coefficient of thermal expansion (CTE) that closely matches that of borosilicate glass and certain ceramics makes it the material of choice for creating hermetic, stressfree seals that can withstand extreme thermal cycling and harsh environments. Our company specializes in the precision CNC machining of Kovar components, providing a onestop solution for your most critical glasstometal sealing (GTMS) applications.


cnc machining center
The challenge with Kovar lies in its machining. It is a tough, gummy material that can workharden rapidly if machined incorrectly, leading to premature tool wear and potential subsurface damage to the component. Our expertise is the differentiator. We employ stateoftheart CNC equipment with rigid setups and utilize specialized, sharp cutting tools with specific geometries and coatings. Coupled with optimized machining parameters—precise control over speed, feed, and depth of cut—we ensure a superior surface finish and maintain the material's intrinsic properties. This is crucial because any microcracks or residual stresses introduced during manufacturing can compromise the integrity of the final seal.

Furthermore, our comprehensive service extends beyond just cutting the part. We understand that components like transistor/IC packages, laser diode headers, and microwave feedthroughs require impeccable cleanliness and dimensional accuracy. Our postprocessing capabilities include precise deburring, ultrasonic cleaning to remove all contaminants, and strict quality control inspections to verify every critical dimension and surface finish specification. This endtoend control guarantees that the components you receive are ready for the direct sealing process, eliminating delays and ensuring a perfect bond between the metal and glass.

By partnering with us for your CNC machined Kovar parts, you gain more than a supplier; you gain a specialist dedicated to the success of your highperformance assemblies. We help you mitigate the risks associated with machining this challenging alloy, accelerate your timetomarket, and enhance the reliability and longevity of your products. Trust our precision machining to form the perfect foundation for your most advanced glasstometal seals.