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Nordson ASYMTEK's Qadence™ Closed-loop Flow Control Automatically Compensates for Viscosity Changes during Conformal Coating

Oct 15, 2019

Nordson ASYMTEK  introduces Qadence™, a closed-loop system that automatically compensates for viscosity changes during conformal coating. This innovative system combines the capabilities of Nordson ASYMTEK's conformal coating hardware and software to selectively apply coating to specific areas of a circuit board consistently throughout production. The Qadence flow control system maintains stable fluid application, flow rates, and performance by automatically compensating for viscosity changes related to temperature, humidity, and batch-to-batch variation. It eliminates the need for frequent operator adjustments and downtime to recalibrate the process.

The Qadence flow control system ensures the quality of the coating application with set process limits to achieve target flow rates and precise application volumes. After process limits are set, target flow rates are continuously monitored for adherence throughout production. If the process falls outside precise application volumes, a control routine (patent pending) is activated to make corrective adjustments - reducing downtime and limiting operator intervention. The flow meter and tighter resolution result in accurate and tighter process controls. Traceability is built in as data and measurements are tracked and can be exported and evaluated by SPC software.

Qadence software is easy to use and implement. After the user enters process parameters and sets other performance limits, the Flow Calculator in Nordson ASYMTEK's EasyCoat® 6 software quickly calculates the target flow rate. A normal 1-hour setup can be completed in 30 minutes and a 30-minute setup in less than 10 minutes. Each valve is separately controlled. Matching flow rates between applicators enables similar valve performance when changing valves or across two valves in a single application.

Automated process controls increase machine up-time and throughput and reduce the cost of operation. When flow rates are optimized, more precise volumes are dispensed and less fluid is wasted. Improved coating accuracy and reliability reduce the need for masking and rework.

The Qadence system is compatible with the Select Coat® SL-940 conformal coating system, EasyCoat 6 software, and Nordson ASYMTEK conformal coating applicators.

"The conformal coating fluid selected for a particular process is important," explained Camille Sybert, product marketing engineer, Nordson ASYMTEK, "but the system that dispenses that coating is what maximizes coating performance. The manufacturing environment rarely remains constant, with temperature and humidity changes affecting the viscosity of the fluid. Nordson ASYMTEK's new Qadence flow control system ensures that the fluid is dispensed at the flow rate intended for best coverage and stabilizes the conformal coating process."

For more information contact Nordson ASYMTEK at info@nordsonasymtek.com, call +1 760-431-1919, or visit our website: www.nordsonasymtek.com.


Nordson ASYMTEK has taken the lead for 35+ years to advance fluid dispensing, conformal coating, and jetting technologies. Focused on immediate and long-term possibilities, ASYMTEK continuously innovates as technology and electronics applications evolve. By focusing on what's possible, we bring more to our customers through innovative solutions, customization, applications expertise, and award-winning global support. Visit us at www.NordsonASYMTEK.com, or on social media.
Nordson Corporation (NASDAQ: NDSN) is one of the world's leading producers of precision dispensing equipment that applies adhesives, sealants, coatings and other materials to a broad range of consumer and industrial products during manufacturing operations. The company also manufactures equipment used in the testing and inspection of electronic components as well as technology-based systems for curing and surface treatment processes. Headquartered in Westlake, Ohio, Nordson has direct operations and sales support offices in more than 30 countries.

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