HOW TO PROCESS

Application Process

In the automotive industry, Crownkyn provides diamond and CBN superhard material solutions covering cutting, grinding, polishing, and surface engineering. Product selection and grit sizing are matched to component materials, machining loads, and performance targets to ensure stable quality and long tool life for industrial users.

Cutting and Rough Machining

Cutting and rough machining require superhard materials matched to workpiece chemistry and heat conditions. Monocrystalline CBN Powder is used for ferrous metals for thermal and chemical stability, while Monocrystalline Diamond Powder or Coated Diamond Powder is applied to non-ferrous alloys to maximize cutting speed and surface finish.

Rough cutting and turning: 40/50 to 60/80 mesh for high material removal efficiency
General machining: 80/100 to 100/120 mesh for balanced cutting speed and dimensional stability
Interrupted or high-load machining: Coated diamond or CBN powders to improve grain retention and thermal resistance

Typical applications: High-silicon aluminum engine components, hardened steel gears and shafts, CFRP structural parts, turbocharger alloys.

Precision Grinding and Shaping

Precision grinding and shaping of automotive components mainly use Monocrystalline CBN Powder, Crushed Diamond Powder, and Micron CBN Powder in resin-bond and vitrified wheels, focusing on shape retention and process consistency.

Rough grinding: 80/100 to 120/140 mesh for efficient stock removal
Semi-finish grinding: 140/170 to 200/230 mesh for improved dimensional accuracy
Profile grinding: CBN or crushed diamond grades for stable contour control

Typical applications: Crankshafts, camshafts, brake discs, transmission gears, bearing components.

Lapping and Polishing

Lapping and polishing of automotive precision parts mainly use Micron Diamond Powder, Micron CBN Powder, and Diamond Slurry and Paste to achieve low surface roughness and tight functional tolerances.

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

Typical applications: Fuel injection systems, transmission components, turbocharger parts, sealing and sliding surfaces.

Ultra-Fine Finishing and Surface Engineering

For performance-critical automotive components, Nano Diamond Powder, Micron Diamond Powder, and Functional Diamond Materials are applied to enhance wear resistance, fatigue life, and thermal management.

Ultra-fine finishing: ≤1 μm for smooth surfaces and reduced friction
Surface strengthening: Diamond micro-powder blasting to improve wear resistance
Thermal management: Thermal conductive diamond powder for efficient heat dissipation

Typical applications: Piston ring grooves, bearing raceways, electric motor components, power electronics substrates.

Automotive Application Overview

Manufacturing Area	Key Materials	Crownkyn Product Solutions	Value to You
Powertrain	AlSi alloys, hardened steels, superalloys	Diamond micron powder, monocrystalline CBN powder	Higher productivity, longer tool life, stable precision
Electrification & Lightweighting	CFRP, silicon steel, AlSiC	Coated diamond powder, nano diamond, thermal conductive diamond	Damage-free machining, improved NVH, enhanced heat dissipation
Chassis & Safety	Cast iron, carburized steel, bearing steel	CBN micron powder, diamond paste and slurry	Improved wear resistance, fatigue life, and batch consistency

Crownkyn supports automotive manufacturers with application-driven diamond and CBN materials, helping you achieve reliable machining performance across both traditional powertrain systems and next-generation electric vehicle platforms.