Tennessee Powder Coating Job Shop Equipment
Powder coating job shops in the Memphis and North Mississippi area and around Nashville see the same summer problem: freshly blasted steel starts to flash rust in humid air if it waits too long. Keeping the time from blast to coat short, and the air in the coating area under control, is a big part of quality. Double D Mechanical installs, relocates and services powder booths, ovens and their air and utility connections.
Discuss your installationShortening the Gap Between Blast and Coat
Blasted steel is bare and reactive. In humid weather, it can start to rust before it reaches the booth. Placing the blast room close to the booth, scheduling blasting just ahead of coating and keeping the staging area conditioned all help.
Conditioning the Coating Area
Booths in humid climates benefit from conditioned make-up air and dried compressed air. Powder sprays better and parts stay drier.
- Dry the compressed air feeding the guns
- Condition make-up air where practical
- Store powder in a cool, dry room
Outgassing and Preheat
Castings and some steels release gas during cure, leaving pinholes. Preheating parts in the oven before coating drives out trapped gas. A walk-in oven with capacity for preheat cycles keeps that step from slowing the schedule.
Castings, Blast Location and Utilities
Shop layout, blast and booth locations, oven size, part types including castings, and utility capacity.
Planning a booth or oven project in Tennessee
Crews mobilize from Houston; Tennessee is roughly 650 miles away, so equipment, panels and tooling are staged and shipped ahead of the install crew.
Manufacturing in Tennessee is concentrated around Nashville, Memphis, Knoxville, and Chattanooga. The sectors most likely to be specifying spray booths, blast rooms, powder systems and cure ovens there include automotive assembly and EV, appliances, chemicals, and aerospace.
Hot, humid summers and mild winters put the emphasis on make-up air cooling or tempering, filter change schedules and keeping intake away from loading doors.
Frequently asked questions
Why does blasted steel rust before we coat it?
Bare steel reacts quickly with moisture in humid air. Coating soon after blasting and controlling the staging environment prevent it.
What causes pinholes on castings?
Gas trapped in the casting escapes during cure. Preheating the part first usually solves it.
Do we need air conditioning in the booth area?
Not always, but conditioned or dried air helps powder and parts in humid weather.
Can the blast room be moved closer to the booth?
Usually, if there is room for the blast enclosure, its dust collector and exhaust.