Air Blowoff & Drying in Metalworking & Steel Mills

Air Blowoff & Drying

Effective air blowoff and drying remove water, oils, and debris before coating, packaging, or further processing. NozzlePro designs air knives, flat jets, round jets, and amplifiers to deliver uniform drying with lower energy usage—optimized for strip, coil, and component lines in metalworking and steel mills.

Key Benefits

Uniform moisture and debris removal across width and edges
Lower compressed-air consumption with high-efficiency nozzles
Faster drying at higher line speeds with consistent quality
Noise-reducing designs for safer operations
Rugged, serviceable hardware for high uptime

Air Consumption by Nozzle Type @ 2 bar (Illustrative)

Visual comparison of typical air usage to aid selection; confirm with datasheets and site conditions.

Air Knife

~160 Nm³/h

Flat Jet

~90 Nm³/h

Round Jet

~65 Nm³/h

Amplifier

~40 Nm³/h

Table 1: Application Map

Application	Goal	Recommended Nozzle	Notes
Strip Drying (pre-coat)	Remove rinse water	Air knives / flat jets	Edge boosters for uniform width drying
Coil Blowoff	Dislodge trapped water/oil	Round jet nozzles	Angle for lap/ID water evacuation
Component Drying	Remove chips, coolant, fines	Air amplifiers / cone jets	Energy-efficient, lower noise
Edge & Feature Drying	Dry hems, flanges, threaded holes	Needle / round jets	Short standoff, precise targeting

Drying Difficulty Heatmap (Illustrative)

Darker cells indicate higher drying demand; consider more headers, higher temp air, or increased pressure.

Line Speed ↓ / Water Load →	Light	Moderate	Heavy
60–120 m/min	Low	Med-Low	Medium
120–200 m/min	Med-Low	Medium	Med-High
200–300 m/min	Medium	Med-High	High

Table 2: Nozzle Selection Guide

Nozzle Type	Air Use (Nm³/h @ 2 bar)	Noise (dB)	Best For	Notes
Air Knife	120–200	74–82	Continuous sheet drying	Excellent width uniformity
Flat Jet	30–90	72–80	Strip surfaces, conveyors	Modular header spacing
Round Jet	20–65	70–78	Targeted spot/edge drying	High momentum, short standoff
Air Amplifier	10–40	68–75	Component drying, energy-sensitive	High entrainment, low air cost

Coverage & Header Spacing Planner

Coverage width W ≈ 2·L·tan(θ/2); set spacing S ≈ 0.7·W for ~30% overlap. Example L = 200 mm.

Spray Angle (°)	Standoff L (mm)	Coverage W (mm)	Suggested Spacing S (mm)	Comments
30	200	107	75	Narrow; high momentum
45	200	165	116	Balanced coverage
60	200	231	162	Wide; watch edge drying

Efficient Blowoff & Drying with NozzlePro

Our engineers right-size air headers, angles, and spacing to match your water load and line speed—delivering faster drying, lower air cost, and consistent quality.