VT machining provides CNC Boring Kovar for customers who need accurate, repeatable Kovar components. Because Kovar is matched thermal expansion for glass/ceramic seals, we adapt the process to suit — controlling the variables that matter for this alloy.
CNC Boring Capability for Kovar
- Bore tolerance to IT6
- Roundness within 0.005 mm
- Fine boring heads
- Large-diameter capability
How CNC Boring Kovar Works
The Kovar bar or billet rotates in the spindle while single-point tools shape outer diameters, bores, faces, grooves and threads. Constant surface speed control keeps cutting conditions stable from large to small diameters.
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 Boring 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.
Design Tips for CNC Boring Kovar
We are happy to suggest design tweaks that improve manufacturability. Consistent diameters, standard thread forms and avoiding extremely long, slender features help Kovar turned parts stay concentric and economical. If you send your model early, we will return practical DFM feedback before you commit to production.
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.
CNC Boring Tolerances & Surface Finish
Turned Kovar holds diameter tolerances to about ±0.005 mm with concentricity within 0.01 mm and good roundness. Turned finishes of Ra 0.4–0.8 µm are achievable with finishing passes and sharp tooling.
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.
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.
Applications of CNC Boring Kovar
Customers order CNC Boring 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 Boring 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 Boring
Other Processes for Kovar
Need CNC Boring Kovar for your project? Send your drawing and quantity for a fast quotation.
Request a QuoteFrequently Asked Questions
What tolerances can you hold for CNC Boring Kovar?
Achievable tolerances for Kovar turning depend on the alloy, geometry and feature size. Turning holds diameter tolerances to around ±0.005 mm with concentricity within 0.01 mm. Exact figures are confirmed against your drawing callouts.
What surface finish is achievable on Kovar with CNC Boring?
Surface finish on Kovar is controlled to your specification; we confirm the achievable Ra against your callout.
Does CNC Boring Kovar require dedicated tooling?
Most Kovar turning work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Why is Kovar a good choice for CNC Boring?
Kovar is matched thermal expansion for glass/ceramic seals, which makes it well suited to CNC Boring. We tune the process to the alloy so the finished Kovar turning part meets your dimensional and functional requirements.
What is CNC Boring Kovar and how is it done?
CNC Boring Kovar refers to boring enlarges and finishes existing holes to precise diameter, roundness and surface finish. Applied to Kovar — matched thermal expansion for glass/ceramic seals — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.