Metallizing system CVA 440 L

Overview
The CVA 440 L is a chemical vapor aluminizing system designed for turbine blades, engine hot‑section parts and other high‑temperature components exposed to oxidation and corrosion. Based on chemical vapor deposition, it produces a uniform aluminide diffusion layer with controlled thickness, aluminum content and microstructure. The effective working zone is ≥ Φ740 × 1000 mm and the maximum reactor loading is 400 kg, allowing treatment of large components and production batches. The gaseous process medium can access internal cooling channels and film‑cooling holes to protect complex geometries.

Key Benefits

• Protection of complex geometries: gaseous process reaches external surfaces, internal cooling passages and film‑cooling holes for uniform coverage.
• Controlled aluminide diffusion layer: process parameters adjust layer thickness, Al content and coating structure to match substrate material and service conditions.
• High‑temperature oxidation resistance: aluminide layer promotes formation of protective Al2O3 scale for hot‑section protection.
• Large working zone and heavy loading: effective zone ≥ Φ740 × 1000 mm and max load 400 kg support large parts and fixtures for series production.

CVA 440 L Features

• Single‑reactor configuration
• Reactor inner diameter: 800 mm
• Reactor outer diameter: 1800 mm
• Effective working zone: ≥ Φ740 × 1000 mm
• Maximum reactor loading: 400 kg
• Maximum furnace temperature: 1200°C
• Working temperature range: 900–1150°C
• Pressure‑rise rate: ≤ 0.5 mbar/h
• Specified ultimate vacuum: ≤ 5 mbar
• Temperature uniformity: ±7°C (based on three process thermocouples)

Applications / Typical Parts

• Turbine blades
• Engine hot‑section components
• High‑temperature parts with complex external surfaces or internal cooling passages

Technical specifications

• Model: CVA 440 L
• Technology: Chemical Vapor Aluminizing (CVA)
• Number of reactors: 1
• Reactor inner diameter: 800 mm
• Reactor outer diameter: 1800 mm
• Effective working zone: ≥ Φ740 × 1000 mm
• Pressure‑rise rate: ≤ 0.5 mbar/h
• Specified ultimate vacuum: ≤ 5 mbar
• Maximum reactor loading: 400 kg
• Maximum furnace temperature: 1200°C
• Working temperature: 900–1150°C
• Temperature uniformity: ±7°C (based on three process thermocouples)