Cure Heat and Make-Up Air for Minnesota Oil and Gas Fabricators
Zinc-rich primers, epoxies and polyurethane topcoats on oil and gas steel all care about temperature, and in a Minnesota fabrication shop the steel itself can arrive at paint cold. Parts that sat by an overhead door or came in on a trailer take time to warm up, and coatings applied to cold steel flash slowly and cure poorly. Double D Mechanical installs, relocates and services the heated booths, cure ovens, make-up air units and gas and power connections that keep coating temperatures under control.
Discuss your installationWarm Steel Before It Is Coated
Heavy fabrications hold cold. Staging parts inside a heated area before they enter the booth, or giving the booth enough heat capacity to bring both air and steel up to temperature, helps coatings wet out and flash on schedule. The coating manufacturer's minimum substrate temperature is the number to plan around.
Force-Cure for Faster Handling
A heated booth with a cure cycle, or a walk-in oven sized for skids and frames, shortens the time before a part can be lifted, flipped or shipped. Oven sizing depends on the steel mass, since a thick skid absorbs a lot of heat before the coating itself reaches cure temperature.
- Heaviest part mass per load
- Target cure temperature and hold time
- Door size for crane or cart loading
- Burner access and exhaust for the oven
Gas Service and Burner Capacity
Make-up air burners and cure heaters together can be the largest gas users in a fabrication shop. Meter size, regulator capacity and pipe sizing should be confirmed before equipment is ordered, and burner trains need room for service.
Building Doors and Drafts
Large overhead doors open for trucks and cranes pull cold air across the floor and into the booth area. Placing the booth away from the main truck door, and making sure the booth has its own heated make-up air instead of borrowing from the shop, keeps cabin temperature stable.
Planning a booth or oven project in Minnesota
Crews mobilize from Houston; Minnesota is roughly 1,050 miles away, so equipment, panels and tooling are staged and shipped ahead of the install crew.
Manufacturing in Minnesota is concentrated around Minneapolis and St. Paul, Rochester, and Duluth. The sectors most likely to be specifying spray booths, blast rooms, powder systems and cure ovens there include medical devices, food processing equipment, heavy machinery, and metal fabrication.
Cold winters mean make-up air heaters are sized for sub-freezing intake, and booth or oven placement has to account for frost lines, snow loads on roof penetrations and winter slab work.
Frequently asked questions
Why do coatings cure slowly in cold fabrication shops?
Cold steel and cold air both slow solvent release and chemical cure. Bringing the part and the cabin up to the coating's required temperature range usually fixes it.
Is a heated booth enough, or is an oven needed?
A heated booth with a cure cycle handles many jobs. A separate oven is worth considering when cure time limits throughput or parts must be handled soon after coating.
How is a skid oven sized?
By the largest skid dimensions, the total steel mass per load, the cure temperature and time, and how parts enter and leave. Mass drives heat-up time.
Can an existing gas service handle a new heated booth?
Sometimes, but it should be checked. The combined demand from make-up air, cure heaters and existing building equipment can exceed what the meter and piping were sized for.
What should be prepared before a Minnesota site visit?
Coating data sheets with temperature requirements, part sizes and weights, crane or forklift details, current gas and electrical service information and the proposed equipment location.