Heat Treating Furnaces, Systems and Accessories

62 Main Street
Foxboro, MA 02035-1847 USA
Phone: (508) 543-5391
Fax: (508) 543-1484
E-mail sentryco@prodigy.net

 

Sentry Company
62 Main Street
Foxboro, MA 02035
Phone: (508) 543-5391
Fax: (508) 543-1484

E-mail us for pricing
or information

 


Dual Heat Treating Furnaces

Model AY/HT Dual Heat Treating Furnaces

Sentry Dual Furnaces...
Much More Furnace in Much Less Space

 

Sentry dual furnaces offer interchangeability and a host of options The Model HT Furnace can be combined with the Model AY Furnaces. Separate units are pedestal mounted and some sizes are available for bench mounting.

Space-saving Sentry Dual Furnaces offer the advantages of the dual furnace design without sacrificing the ability to obtain high quality heat treating results.

The Model AY Furnace features the Diamond Block atmosphere for scale-free, decarburization-free hardening of all types of tool steels. The Model HT Furnace features a recirculating air system for thermal efficiency and improved temperature uniformity.

Furnaces Sold Separately or Dual Furnace Design



Model AY furnaces
feature the Diamond Block Atmosphere for simplified protection of tool steels during hardening and are designed for exceptional temperature uniformity and performance. Rugged industrial construction assures long life and low maintenance.

Features:

  • Furnace can accommodate simplified and effective atmosphere control with the Diamond Block atmosphere.
  • Work chamber formed by a full high heat conducting muffle. The muffle eliminates direct radiation from heating elements and dampens temperature fluctuations to provide unified temperature in the work area.
  • Heating elements are located above and below the work chamber and are spaced to control heat distribution.
  • Recessed door construction eliminates cold throat condition and increases the usable work area.
  • 6 AY door, made of cast iron and refractories, is fully recessed into the furnace. Hand actuated lever operates pneumatic lift assembly. All AY doors can be elevated to any variable height setting.
  • Furnaces designed for fast heating. Heavily insulated for continuous operation up to 2500 Degrees F. Plus low heat storage insulation...ideal for intermittent use.
Sentry AY Furnace Operating Characteristics & Specifications
(all sizes 240 or 480 volts, 60 Hertz, 3 phase )
Size & Model 2AY 3AY 4AY 5AY 6AY
Work Chamber
(Fully Useable)
Wide 4 1/2" 9" 6 1/8" 9" 12"
High 4" 4" 6 1/8" 7" 8"
Deep 11" 16" 13 3/4" 20" 25"
Sentry Diamond Block Sizes 1-4 11-14 6-10 11-17 18-20
Sentry Block Maximum
Tool Size Capacity (in inches)
2 3/4"x3"x8" 2 1/2"x7"x12" 4 1/2"x4 3/4"x9" 5"x7"x14" 5"x8 1/2"x17"
Max. Operating Temperature All sizes to 2500° F
Power Supply All Sizes-220 Volts, 60 Hertz, 3 Phase
Rating (KW) 14.5 24 20 33 43
Avg. Power Used (KW) 3-7 5-12 4-10 6-14 16-27


Model HT Tempering Furnaces -Model HT furnaces feature a recirculating air system for quick, even tempering and are designed for exceptional temperature uniformity and performance. Rugged industrial construction assures long life and low maintenance

Features:

  • Efficient heat transfer created by forced air convection. Rear mounted fan system circulates air through the heating elements to the work chamber
  • Work shielded from heating elements to eliminate direct radiation and prevent overheating
  • Recessed door improves chamber temperature uniformity and eliminates cold throat conditions
  • Work stands and removable shelf elevate work in the chamber to allow for even and uniform heating
  • Rugged industrial design. All interior metal parts including the fan are stainless steel or nickel chromium alloy to assure long life
    Simplified internal assembly easily removed for heating element maintenance
  • Belt driven fan system isolates air cooled motor from furnace heat
  • Available pedestal or bench mounted
  • Furnace provided with door latch to hold door in open position

Sentry HT Furnace Operating Characteristics & Specifications
Model 2HT
Size Max. Temp. Chamber Size Power Supply Motor Rating Overall Size Bench
Height
Approx.
Weight
Wide Deep High KW Volts Phase Volts HP Wide Deep High
2 1250° F 13" 18" 14" 8 220 1 220 1/4 29" 49" 62" 31" 800 lbs.
Model 3HT
3 1250° F 20 1/2" 24" 16" 10.5 220 1 220 3/4 36" 54" 55" 33" 1050 lbs.

Model AY and HT Dual Furnace Specifications*

Size & Model 2AY & 2HT 3AY & 2HT 4AY & 2HT 5AY & 2HT 6AY & 3HT
Overall
Furnace
Size
Wide 29" 32" 30" 38" 44"
Deep 49" 49" 49" 49" 55"
High 57" 62" 63" 69" 86"
Approximate Furnace Weight 1200 lbs. 1600 lbs. 1500 lbs. 2400 lbs. 3850 lbs.
Height of AY Chamber 43" 45" 45" 47" 50"
Height of HT Chamber All Sizes 12"