Automatic Coating Weight Control

Automatic Coating Weight Control


Automatic Coating• Major Zinc Cost Savings
• Improved Quality with Consistent Coatings
• Latest Generation Computer and
  PLC Hardware

• Lower Manpower Requirements

Automatic Coating Weight Control Touchscreen InterfaceQED Wire Lines Inc is pleased to offer the steel wire industry a revolutionary galvanizing technology: The Automatic Coating Weight Control System. This proven system accurately and consistently applies metallic coatings to multiple wires in high speed process lines. Using an innovative sensor, computer interface and flow control valves with precision nitrogen wiping nozzles, the system promises; improved quality, higher production and significant savings on zinc, aluminium or Galfan®.

Automatic Coating Weight Control Advanced Technology SensorsOur advanced sensors measure the electromagnetic flux distortions caused by changes in the coating thickness using a special frequency-optimized algorithm. The resulting signals are feed into the coating weight computer where comparisons are made to the set-point input from the operator station. Output signals from the computer are sent to a bank of valves that proportionally control the nitrogen flows. The nitrogen exits the nozzles at high velocity, dynamically wiping the coating to the desired thickness. This is a fully automatic, closed
loop system, offering accurate zinc coating weight
control of15 g/m2 (0.05 oz/ft2).


Automatic Coating Weight Control Nitrogen FlowBoards• Reliable and Proven Technology
• True Closed-Loop Control
• Latest Generation Computer and PLC Hardware
• Automatic and Manual Modes
• Alarms for Out-of-Range Coatings
• Data Acquisition and Network Interfacing

Cost Savings

Savings in zinc consumption of 25% and more are realized through tighter control of coating weight. This means a rapid payback of usually less than 12 months on the capital expenditure.

Improved Quality

Employing the latest generation of Nitrogen Wiping Nozzles, the system offers improved quality in concentricity, surface finish and coating weight consistency. This improvement in quality achieves a better performing wire in corrosion tests with equal coating weights.

Increased Production

The system permits wire speeds up to 300% faster than gas/gravel wiping methods. Additionally, since less operator input is required in the wiping area, productivity can be increased by about 10%.