CNC Punching Kovar is a core capability at VT machining. We combine controlled punching with material-aware setup for Kovar — an alloy that is matched thermal expansion for glass/ceramic seals — to produce parts that meet your specification first time.
CNC Punching Capability for Kovar
- Sheet thickness 0.5–6 mm
- Hole position repeatability ±0.10 mm
- Punch/die clearance set per material
- Louver, emboss and tap-extrude tooling
How CNC Punching Kovar Works
A CNC turret presses hardened punches through the Kovar sheet into matching dies. Punch-to-die clearance is set as a percentage of thickness so the cut edge stays clean and burr is minimal.
Programming is driven directly by your 3D model or print. Work-holding, tool selection and the cutting strategy are planned around the critical features and the material before the first chip is cut. First-off inspection confirms the process is centred before production continues.
CNC Punching Tolerances & Surface Finish
Punched Kovar holds hole-position repeatability around ±0.10 mm across the sheet, with consistent hole quality when punch/die clearance is matched to the gauge.
Exact achievable figures depend on the alloy, the feature size and the part geometry. Tell us which dimensions are critical and we will advise feasibility up front.
CNC Punching Quality & Inspection
We control quality throughout the process, not just at the end. In-process checks plus final inspection — including CMM where specified — keep every Kovar part to print. Inspection reports, material certificates and first-article documentation can be supplied on request.
Secondary Operations & Finishing
Finished Kovar parts can move straight into secondary operations under one roof. Typical add-ons are deburring, passivation, anodising, plating, blasting, polishing and laser marking. We coordinate the whole chain so you receive complete, inspection-ready parts.
Working with Kovar
As a material, Kovar is matched thermal expansion for glass/ceramic seals. Our setup reflects the alloy's machinability so the finished part is accurate and free of avoidable defects.
We verify the exact grade and condition before machining, and traceable mill certs are available on request. We can work to your nominated material source or specification when required.
Design Tips for CNC Punching Kovar
We are happy to suggest design tweaks that improve manufacturability. Keeping hole-to-edge and hole-to-hole distances at least 1.5–2× thickness avoids distortion and tearing in punched Kovar. If you send your model early, we will return practical DFM feedback before you commit to production.
Applications of CNC Punching Kovar
Customers order CNC Punching Kovar components for everything from instrumentation to structural and functional assemblies. Whether you need a single prototype or recurring production volume, the same process discipline applies.
How to Order CNC Punching Kovar
Getting a quote is simple. Share your model, the material grade, your quantity and target tolerances. You receive a clear quotation with lead time and honest manufacturability feedback.
Other Metals for CNC Punching
Other Processes for Kovar
Need CNC Punching Kovar for your project? Send your drawing and quantity for a fast quotation.
Request a QuoteFrequently Asked Questions
What material thickness or size range suits CNC Punching Kovar?
Punching suits Kovar sheet roughly 0.5–6 mm thick, with clearance matched to the gauge.
How clean are the edges produced by CNC Punching on Kovar?
Punched Kovar edges are clean when punch/die clearance is correct; we set clearance to the gauge and can add deburring if specified.
What tolerances can you hold for CNC Punching Kovar?
Achievable tolerances for Kovar punching depend on the alloy, geometry and feature size. Punching holds hole-position repeatability to around ±0.10 mm. Exact figures are confirmed against your drawing callouts.
What surface finish is achievable on Kovar with CNC Punching?
Surface finish on Kovar is controlled to your specification; we confirm the achievable Ra against your callout.
Does CNC Punching Kovar require dedicated tooling?
Punching uses programmable turret tooling; standard tools cover most patterns, with special tools added for unique forms.