Heat treat ovens are very common in the heat treat industry and are commonly referred
to as Companion Draw Furnaces or Draw Batch Furnace. Wisconsin Oven’s SDB
Series is used most often for tempering, solution
treating, aging, annealing, normalizing, and stress
relieving applications.
We have 40 standard SDB heat treat oven
models. There are ten (10) standard
sizes, available in four (4) temperature ranges. Standard maximum continuous
temperature ratings are 800°F (425°C), 1000°F (540°C), 1250°F
(675°C), and 1400°F (760°C).
Each model can be heated by either a direct gas fired burner (Natural or Propane),
or with electric heating elements. We can also provide indirect
gas fired units
if required.
The
standard furnaces are designed to accept the most common heat treat oven baskets and
load sizes (please reference chart). If your basket size isn’t listed,
please contact us so we can discuss your application.
Draw Batch Oven
Model: SDB-101010-12G
Gas Fired, accepts
a basket
60” x 60” x
60”
Model
Basket Dimensions
Width
Height
Depth
SDB-436
24"
18"
36"
SDB-446
24"
24"
36"
SDB-448
24"
24"
48"
SDB-558
30"
30"
48"
SDB-658
36"
30"
48"
SDB-668
36"
36"
48"
SDB-6612
36"
36"
72"
SDB-8612
48"
36"
72"
SDB-888
48"
48"
48"
SDB-101010
60"
60"
60"
Wisconsin Oven’s draw batch ovens feature heavy duty construction, which
includes a plate steel outer shell, a reinforced steel plate oven front, a lined
inner shell, and exterior structural reinforcements as required. The following
chart shows a breakdown of these components by maximum temperature rating.
Maximum Temperature Ratings
800°F (425°C)
1,000°F (540°C)
1,250°F (675°C)
1,400°F (760°C)
Oven Front
3/8" Plate Steel
3/8" Plate Steel
1/2" Plate Steel
1/2" Plate Steel
Outer Shell
3/16" Plate Steel
3/16" Plate Steel
3/16" Plate Steel
3/16" Plate Steel
Inner Shell
20 gauge aluminized
18 gauge aluminized
18 gauge 304 SS
18 gauge 309 SS
Insulation
6" semi-rigid mineral wool
4" mineral wool & 2" N-Block
4" mineral wool & 2" N-Block
4" mineral wool & 4" N-Block
(click to enlarge)Row of Draw Batch Ovens
We offer a wide variety of standard options to satisfy most applications, including
special temperature controllers, chart & paperless temperature recorders
(as well as other data acquisition equipment), process timers, and 7-day timers.
Hearths & Work Support - Many different hearth designs
can be supplied with our equipment. As a standard, we provide a pier-rail
hearth, which is used when the baskets or products are loaded either by hand,
or by fork truck.
Other hearth designs we offer as options include: full width rollers, split
roller, wheel or roller rail (with or without chain guides). Hearths are
available in either carbon steel, stainless steel, or alloy, depending on the
temperature and your needs. We can design the equipment with a bridge and
chain guides, to allow loading and unloading from an existing charge car.
(click to enlarge)
Pier Rail Hearth
(click to enlarge)
Cast Alloy Roller Rail
Hearth with Chain Guide
(click to enlarge)
Full Width Roller
Standard Control Panel
Standard features include maintenance free door gaskets, high pressure air distribution
ducts, heavy duty exterior plate construction, corrosion resistant aluminized
or stainless steel interior (depending upon model), and non-settling batt type
insulation. These heat treating ovens also include an air operated vertical lift
door, combination air flow through the work chamber, pier rail hearth, disconnect
switch and NEMA 12 controls.
Rear View of Fiber Backed Door
When specified, the equipment can be designed to meet even the most stringent standards
(i.e. AMS-2750, AMS-2770, or BAC-5602, to name a few).
Draw Batch Furnace with Quench Tank
Our heat treat ovens
can be supplied with Quench
Tanks or
powered or non-powered load tables.
Draw Batch Furnace with Dual Hearth Quench Tank
Traveling loaders (as shown below) are also available.
Traveling Charge Car
Video clip of a traveling load car system in operation.
Indirect Gas Fired SDB with Nitrogen
atmosphere system and atmosphere-to-water cool down (view from back)