© Copyright 2023 – Cer-Mac Inc: CNC Machining Specialists
Machining Invar unleashes new possibilities in the world of precision component design. Unlike other metals and alloys that deform or weaken when exposed to extreme temperature fluctuations, Invar boasts an impressive material stasis across a wider temperature range.
Invar is a specialty nickel-iron alloy typically composed of 36% nickel, 64% iron, and trace amounts of other elements. Appropriately, derived from the word “invariable”, Invar is prized for its resilience and structural stability when exposed to high heat, freezing temperatures, and sudden temperature fluctuations.
The very same structural properties that provide greater resistance to thermal expansion and contraction also make Invar incredibly difficult to machine.
Cutting tools generate significant heat build-up during the machining process due to Invar’s low-thermal conductivity. This accelerates wear and tear, ultimately reducing overall tool and machine efficiency. Machining operations may need to be slowed to mitigate heat-related issues and ensure that parts are conforming to the needed specifications.
Additionally, Invar’s high nickel content, low ductility, and unique structure make it tough and prone to work hardening.As the alloy is exposed to continued machining processes, such as CNC milling or turning, it becomes progressively harder. Invar has very low ductility, meaning it does not shape as easily as aluminum or copper. It is imperative that the machined part is firmly stabilized to prevent tool shifting and machining defects.
Despite these machining challenges and the extreme caution required, Invar machining to exacting tolerances can still be achieved. With appropriate cutting tool selection, workpiece securement, and cautious machining practices, Invar can safely and accurately be manipulated with cost-efficient precision.
To avoid equipment damage and provide a superior finish with every Invar machining project, our expert machinists at Cer-Mac offer:
Our machinists craft precise Invar components with turning, milling, drilling, and grinding. To further strengthen component integrity, annealing (heat treating) processes are often employed to reduce the risk of dimensional changes over time.
By utilizing cutting-edge machining practices such as carbide cutting tools, superior workpiece stabilization, and heat-reducing coolant application, our careful machinists protect every workpiece from potential damage for predictable savings and quality with every projec
Our Invar machining experts never back down from a highly specific component request. We prioritize meticulous blueprint analysis, appropriate equipment selection, and detail-oriented defect inspection for components that are accurate, durable, and delivered on time. Explore the various Invar machining applications below and discover the many ways our experienced professionals at Cer-Mac can optimize your operations with superior component consistency.
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The dependable structural stability of Invar is invaluable for applications and equipment types that rely on accuracy and consistency. Even when exposed to significant temperature changes, Invar is an ideal material for a wealth of applications, such as:
The slightest deformations or structural imbalances can disturb the delicate arrangement of mirrors, lenses, and other highly sensitive components in microscopes, cameras, and laser systems. Since refracted light and laser systems can generate and dissipate a massive amount of heat, Invar alloy provides an exceptional foundation for components that retain their precise shape.
The vacuum of space is an unforgiving environment that exposes technologies to extreme temperature fluctuations between sun exposure, shaded orbit, and re-entry into Earth’s atmosphere. Satellites, spacecraft, and many other sophisticated aerospace devices that require predictable material stability can benefit from the unchanging properties of Invar.
Invar is equally valuable in advanced military systems such as missile guidance systems, surveillance equipment, and other high-end defense applications when precision targeting is the objective in the face of harsh elemental conditions.
With a greater variety of machining options at Cer-Mac, our machine shop is well-equipped to help you refine your components affordably, quickly, and correctly. As your collaborative production partners, we power every project with real-time development insights and objective material guidance to maximize production efficiency while cutting costs with every optimized plan.
Similar to the versatile component applications available with Kovar machining, Invar machining is available with numerous milling, turning, and grinding equipment types. Each Invar machining type offers distinct advantages for specific component project types; contact our knowledgeable machinists at Cer-Mac and learn more about the practical benefits associated with each machining option.
Have a specific component inquiry, part-repair needs, or need professional project guidance? We will gladly help you orchestrate an Invar machining plan that elevates part quality and respects your operational goals every step of the way.
© Copyright 2023 – Cer-Mac Inc: CNC Machining Specialists