Can anyone help identify this Bayco Oven Model, Type, or Use

Finishing Market asks and posts three photos of a Bayco unit and asks what is this units purpose and what this unit can be used for? Thermo cleaning paint line work hangers for better electrostatic ground? Maybe.

Best guess is that the Bayco Oven pictured is either a 'Paint Bake-Off Oven fitted with a VOC destruct after burner? I can see an exhaust stack in the last photo but I can't see an after burner in the photos but there may be a separate after burner atop this unit for solvent, smoke, and VOC destruct. That is the section that would be capable of 1200 deg F. if it is a burn-off oven. The oven below would be run normally at a lesser temperature. The control panel indicates no afterburner burner control so I'm guessing.

The purpose of the afterburner is to raise and hold the exhaust from the oven to 1500 deg F. for 1/2 a second for destruction to take place. A 1500 deg F afterburner temperature is the normal destruct temperature desired. Since I don't see an afterburner in the picture I don't believe this oven is a bake-off unit. Afterburners keep the EPA off your butt when the neighbors see smoke out the exhaust stack.

or this unit is a...

Bayco Heat Treating Oven.

At 1200 deg F using a gas burner is actually too high a temperature for normal burn-off ovens so I'll lean toward a heat stress relieving or normalizing unit. Yes a unit like this could thermo-clean a grey ductile iron engine block casting of gunk, oils, and soils. I don't think I'd do aluminum unless I wished to make aluminum ingots for scrap by smelting down alternators for instance.

The key to thermo clean or stress relieving is to ramp the temperature up s-l-o-w-l-y and hold at temp and ramp back down equally slowly. I do not see PLC control in the picture.

So this unit is just an unloved BRUTE! Fill it, fire up the 800,000 Midco packaged burner?, set the timer, walk away, come back and empty it for the next batch. I see the explosion relief door lock, the pull out cart, the burner box hung on the outside of the oven, no oven exhaust fan, a stack ring, minimum controls, and that god awful remains of the poured type K cement insulation hung on the inside of the shell and a feeble attempt from maintenance to protect the door from being chipped away by the cart of work.

I assume that this oven was secured from an auction/sale or a plant closing and that it was used outdoors to keep the heat out of the plant.

Side bar: The word furnace implies an operating temperature greater then 750 deg F. and ovens are 750 deg F or below. A high oven temperature is maybe 550 deg F. Usually around 300 deg F.

Possible Construction: 14 ga formed up black iron shell with 'pig tails' welded to the inside of the shell to hold the poured Type K non-expanding cement. Non-expanding cement means that the cement shrinks less then normal cement as it turns over during it's 88 year drying cycle* to concreate.

Pigtails are wrapped with masking tape or wax coated to make them larger in diameter so cement turning to concreate has some wiggle room and does not crack.

The other insulating method is to impale on pins welded to the inside of the shell, 6" of 6 lb density rockwool against the inside of the shell, then 4" of Cerafelt then 2" of hardface secured with ss square tinnerman nuts. Thickness of insulation depends on temperatures. One inch per 100 deg F. or better.

Best guess.

Craig [skip] Weis Unemployed, and looking, Sturgeon Bay, Wisconsin.

Last edited by skip (12/11/2009 - 04:35 PM)