Inside Giering's Upgraded EC-1 Electrocoat Line
Inside Giering's Upgraded EC-1 Electrocoat Line: What Changed and Why It Matters
When manufacturers in Connecticut and across the country send parts out for electrocoating, they are really buying two things: coverage and consistency. At Giering Metal Finishing in Hamden, CT, we rebuilt our largest electrocoat line — known internally as EC-1 — from the pre-treatment washer to the post-rinse system to deliver exactly that. What began as a plan to replace our post-rinse tanks grew into a full revamp of the line, driven by a customer's demanding heat exchanger application.
This article walks through what we upgraded on EC-1, why each change matters to the parts you receive, and what customers have told us since the new line came online.
1. Stainless Steel Construction Throughout the Line
One of the most significant changes was replacing the older cold-rolled steel tanks and structures with stainless steel. Our tanks, conveyors, and the shell of the line are now stainless. Why does that matter? On older lines, steel components shed debris over time, and that debris can land on parts mid-process. Every speck of debris on a coated part risks a refinish — which costs time, consistency, and quality.
By eliminating that contamination source, EC-1 produces cleaner parts the first time through. Fewer defects mean fewer reworks and a more predictable finish from the first part in a lot to the last.
2. A Smarter Pre-Treatment Washer
Cleanliness before coating determines the quality of the coating itself. EC-1's seven-stage pre-treatment washer — two cleaner stages and five rinse stages — now uses spray nozzles that attack parts from the top, the sides, and the bottom for complete coverage, cleaning, and rinsing.
Filtered Nozzles for Repeatable Results
We also added filtration on the spray nozzles themselves. Clogged nozzles are one of the quiet causes of missed spots in metal finishing — a nozzle drifts out of spec, and coverage suffers without anyone noticing. Filtration keeps every nozzle spraying the way it should, not just day to day but month to month. That is the difference between a process that is repeatable and one that merely works most of the time. Learn more about why this stage matters on our cleaning and pretreatments page.
Modulated, High-Efficiency Heating
We replaced on/off high-energy heating elements with high-efficiency boilers that modulate heat evenly. Even, controlled heating protects the chemical composition of our cleaning and treatment baths from deteriorating, which translates directly into better, more level coverage on your parts — and lower energy consumption for the process overall.
The Result: Quality First, Then Throughput
Our sequence was deliberate: improve product quality first, then increase quantity. With fewer stoppages and a line that runs cleanly from the start of a shift to the end, EC-1 now delivers both. Customers comparing parts off the new line to the old one tell us the difference is visible — better coverage, a smoother finish, and output that looks less like a prime coat and more like a finished coating.
What This Means for Your Parts
Today's market has shifted from high quantity to high quality. OEMs want a higher-end finish on everything, including complex, multifaceted parts that many finishers won't take on. The EC-1 upgrades were built for exactly that shift — consistent film from one end of a part to the other, inside cavities and out, whether we run one part or a million. Our processes remain approved for military specifications including MIL-DTL-53084, detailed on our specifications page.
Want to see what the upgraded EC-1 line can do for your parts? Call Giering Metal Finishing in Hamden, CT at (203) 248-5583 or request a quote online — and ask about our electrocoating services.
Frequently Asked Questions
What is the EC-1 electrocoat line?
The EC-1 is Giering's primary electrocoating production line in Hamden, CT. It uses a continuous conveyor system to move parts through a multi-stage process of cleaning, pretreatment, electrocoat dip, post-rinse, and oven cure — all in a single automated pass.
What upgrades were made to the EC-1 line?
Recent upgrades include stainless steel tank construction for longer service life, filtered spray nozzles in the rinse stages for cleaner surfaces, and modulated heating controls in the cure oven for tighter temperature consistency across part loads.
Why does stainless steel tank construction matter in electrocoating?
Stainless steel resists chemical corrosion from the pretreatment and e-coat bath chemistries. That means fewer contaminants introduced into the process, less tank maintenance downtime, and more consistent coating quality over time.
How do filtered spray nozzles improve e-coat quality?
Filtered nozzles remove particulate from rinse water before it contacts the part surface. This reduces surface contamination between stages, which lowers the risk of coating defects like pinholes, craters, or adhesion failures.
Can I tour the upgraded EC-1 line or see it in operation?
Yes. Giering welcomes facility visits by appointment. Contact us or call (203) 248-5583 to schedule a walkthrough of the EC-1 line and discuss your project requirements in person.
