Annealing for Aluminum Coils
Nitrogen for safe and effective annealing of aluminum coils
Easy Installation
Oxygen concentrations controlled below explosive limits of air-fuel mixture
Reliability
Essentially no downtime associated with liquid nitrogen supply or on-site gas generation with liquid backup
Economics
High nitrogen flow only during critical times, in situ oxygen analysis and closed loop feedback control
Quality
Consistent atmosphere quality with data collection and leak detection capabilities

Proven Benefits
Nitrogen atmospheres for coil annealing have significant benefits and advantages vs. exothermic-generated atmospheres, including:
- Improved process control for more consistent product quality
- No upfront capital required
- No maintenance
- No downtime
- Lower safety risk
- No specialized operator training required
- Flow peaking capability for rapid furnace purging (decreased cycle times)
- Elimination of soot buildup, resulting in cleaner furnace interiors
- More available floor space in furnace area
PRISM® Cryogenic Nitrogen Generators
Our range of nitrogen generators includes cryogenic, adsorption, and membrane technologies. We can meet all typical flow, pressure, and purity requirements, providing a highly reliable gas supply at overall cost savings compared to delivered liquid nitrogen.

Count on Air Products’ expertise…
Let us help you determine how to maximize the benefits of nitrogen atmospheres in your coil annealing process.