HOW TO PROCESS

Application Process

In the Aerospace industry, Crownkyn provides diamond- and CBN-based superhard material solutions for cutting, grinding, lapping, polishing, and surface engineering of critical structural and functional components. Product selection and grit sizing are matched to material chemistry, mechanical load, and thermal conditions, helping you achieve stable processing, tight tolerances, and reliable quality in aerospace-grade manufacturing.

Cutting and Rough Machining

Cutting nickel-based superalloys and titanium alloys involves extreme challenges, including high cutting temperatures, work hardening, and severe notch and crater wear. Monocrystalline CBN Powder, with high chemical inertness and red hardness, withstands these conditions, maintaining sharp edges and predictable tool life where conventional materials fail.

Nickel-based superalloys & titanium alloys: Monocrystalline CBN Powder for stable cutting under extreme heat and load
Aluminum and other non-ferrous alloys: Saw grit monocrystalline diamond for high efficiency and burr-free edges
CFRP & CMC composites: Saw grit and coated diamond to fabricate PCD tools for delamination-free, clean-edge machining

Typical applications: Aircraft structural parts, titanium brackets, CFRP panels, composite layup tooling.

Precision Grinding and Shaping

Precision grinding is critical for aerospace components where dimensional accuracy and surface integrity directly affect performance and safety. Material-specific abrasive selection ensures grinding stability and minimizes thermal damage.

Carbide, ceramics, non-metallics: Wheel grit monocrystalline diamond for stable wear; crushed diamond in resin-bond wheels for aggressive cavity roughing
Nickel superalloys & hardened steels: Monocrystalline CBN for grinding; coated CBN for HEDG and creep-feed processes under high load

Typical applications: Turbine blade roots, landing gear components, aerospace transmission parts, precision tooling.

Lapping and Polishing

Lapping and polishing aim to achieve low surface roughness, high flatness, and defect-free surfaces required for fatigue-critical aerospace parts. Micron Diamond Powder, Micron CBN Powder, Diamond Slurry, and Diamond Paste enable controlled and repeatable surface refinement. The selection between diamond and CBN micron abrasives follows the same chemical compatibility principles applied in grinding operations.

Pre-lapping: 15–30 μm for surface correction and flatness control
Fine lapping: 6–14 μm to remove grinding marks
Final polishing: 1–3 μm or finer for high-precision aerospace surfaces

Typical applications: Aerospace seals, bearing races, precision shafts, structural interfaces.

Ultra-Fine Finishing and Surface Engineering

For aerospace components requiring extreme surface integrity and long fatigue life, advanced finishing materials are essential.

Ultra-fine finishing (bearings & gears): ≤1 μm and nano diamond; polycrystalline diamond micron powder for scratch-free surfaces and optimized residual stress
Surface strengthening: Diamond micro-powder to improve wear resistance and contact fatigue performance
Thermal management: Thermal conductive diamond for localized heat spreading, reducing thermal gradients and distortion

Typical applications: Aerospace bearings, precision gears, hot-section engine components, high-load rotating parts.

Aerospace Manufacturing Application Overview

Manufacturing Area	Key Materials	Crownkyn Product Solutions	Value to You
Structural & Composite Machining	Al, Ti, CFRP, superalloys	Saw grit diamond (Al/CFRP), CBN (Ti/superalloys)	Enable damage-free composite machining and deliver 3–5× longer tool life
Precision Grinding of Critical Parts	Inconel, Ti6Al4V, hardened steels	CBN and coated CBN powder	Achieve profile tolerances below 3 μm with over 40% longer wheel life
Superfinishing of Dynamic Components	Bearing steel, gears	Micron, nano, and polycrystalline diamond slurry	Improve surface roughness to Ra < 0.1 μm and increase fatigue life
Thermal Management in High-Temp Assemblies	Hot-section components	Thermal conductive diamond	Reduce thermal gradients and distortion in high-temperature aerospace assemblies

Crownkyn supports aerospace manufacturers with application-driven diamond and CBN materials, helping you control extreme machining conditions, extend tool life, and ensure consistent quality in high-precision aerospace production.