Welcome to Pasha Composites LLC

Why reinforcement is critical:
These single-crystal components are often long and thin, making them prone to warping or shell cracking during the burnout or metal pour stages. The complexity of cooling channels and tight tolerances leave no room for distortion.

How our product helps:
Continuous ceramic fiber (like AP-18 tape or ALF yarn) adds tensile strength exactly where it’s needed, especially at fillets and fin sections. The result is a shell that holds during wax burn-out and survives the stress of high-velocity superalloy pour without cracking or collapse.

Why reinforcement is critical:
Blades in land-based turbines are often wider and heavier than their aerospace counterparts. The added thermal mass puts the shell under immense strain during pour and cooldown, increasing the risk of spalling or fracture.

How our product helps:
Fiber wrapping provides green strength during shell build-up and tensile reinforcement during the pour, absorbing thermal shock and mechanical stress. It allows for thicker sections or larger parts without compromising integrity.

Why reinforcement is critical:
NGVs combine thin trailing edges with heavy structural rings — a recipe for uneven cooling and mold distortion. The mismatch between wall thicknesses leads to internal stress and shell cracking.

How our product helps:
Selective wrapping allows you to reinforce only the high-risk zones. Continuous alumina fiber supports the mold mechanically without altering your slurry chemistry or requiring extra dips, maintaining your process while improving yield.

Why reinforcement is critical:
These are often cast as large, ring-shaped assemblies — high surface area, high weight, and prone to radial cracking as the shell cools or during fixture handling.

How our product helps:
Tapes and yarns prevent “egging” or fracture by holding the shell together with circumferential strength. Since our fibers match the CTE of most shell materials, they reinforce without introducing new stress.

Why reinforcement is critical:
These parts can be geometrically complex, combining thin ribs with thick anchor points. The challenge is keeping dimensional integrity during shell burnout and avoiding premature failure during the pour.

How our product helps:
Using AP-18 tape lets you selectively reinforce load-bearing shell areas without extra ceramic coats. This minimizes shell weight while maintaining structural integrity — especially useful in aerospace castings where tight tolerance is key.

Why reinforcement is critical:
Impellers often require internal cores and multiple vane features, creating fragile ceramic forms. The torque of metal flow and centrifugal mass of the part can easily crack unsupported shells.

How our product helps:
Our ceramic yarns and tapes stabilize the geometry under thermal and mechanical stress. This is especially helpful when casting Inconel or other dense alloys where pour weight amplifies risk.

Why reinforcement is critical:
These parts experience intense heat cycling and often have delicate ports or cooling features that make the shell vulnerable to cracking, especially during dewaxing or firing.

How our product helps:
Ceramic tape or yarn reinforcement ensures the shell maintains structural integrity during burnout and pour. Ideal for components where geometry is complex but strength is needed without excess shell thickness.

Why reinforcement is critical:
Exhaust cases are large, circular components with uneven wall thickness and a high risk of radial or circumferential cracking in the shell. Their size and cooling behavior make them prone to distortion.

How our product helps:
Continuous fiber provides hoop strength during thermal contraction and helps manage stresses at flanges or bosses. Especially effective when part size exceeds 12 inches in diameter.

Why reinforcement is critical:
These are some of the largest single castings in an engine — heavy, complex, and often thick-walled. Molten metal weight alone can cause the ceramic shell to sag, buckle, or fracture during the pour.

How our product helps:
Selective wrapping supports vulnerable shell regions without adding mass or extra dips. Great for maintaining dimensional control on parts that would otherwise require fixturing or redesign