SOW_Furnace_Heat_Treating_Oven_Rev1.0.pdf
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- Attached to
- Furnace, Heat Treating Oven
- Solicitation number
- F5F2MA5141AQ01
About this file
This Statement of Work (SOW) details the procurement of a Furnace, Heat Treating Oven for the 452d Maintenance Squadron at March Air Reserve Base in California. The requirement is for a dual radiant heat chamber furnace with two separate chambers - an upper chamber capable of reaching 2,000°F with ±25°F uniformity, and a lower chamber capable of reaching 1,100°F with ±10°F uniformity. The oven must include specific technical specifications such as precise temperature controls, insulation requirements, heating elements, thermocouples, and safety features like door microswitches that automatically shut off heating elements when opened.
The procurement timeline requires delivery within 20 weeks of contract award, with full installation to be completed within 4 weeks of delivery. The project will take place in a secure aircraft hangar location, with an escort provided by the associated section to accompany the contractor. No government-furnished property will be provided, and all delivery and installation services will occur at the 452d Maintenance Squadron, March Air Reserve Base in California. The heat treating oven is crucial for the base's Metals Technology operations, enabling on-site heat treatment of aircraft parts and avoiding potential repair delays.
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| File | Type | Posted |
|---|---|---|
| Heat_Treat_Furnance_RFI_20250826.pdf | ||
| RFQ_F5F2MA5141AQ01_Heat_Treat_Furnace.pdf |
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Text version
Statement of Work Furnace, Heat Treating Oven
March Air Reserve Base 12 August 2025
1. General: This is a non-personnel service order to provide a Furnace, Heat Treating Oven in Building 2312.
2. Background. March Air Reserve Base, California is the home to 15 KC-135 and 9 C-17 aircraft. Heat Treatment of aircraft parts are a vital process in the manufacturing of aircraft parts in Metals Technology.
The 452 MXS/MTECH at March must ensure that all parts are properly heat treated within temperatures required within our Tech Data. The Air Force allows repairs that can be facilitated at home station and purchasing the required furnace/oven will allow for that and not require engineers to come up with alternative metals or solutions that could delay repairs.
3. Scope. The services should include the following:
3.1. The contractor will deliver the furnace, heat treating oven.
4. Objectives. Complete delivery of product and all accessories required when the contract is awarded.
5. Tasks/Requirements. At the completion of the contract the contractor will have provided the following:
1. Dual Radiant Heat Chamber
a) 18” H x 24” W x 48” Length (Both Chambers) or Equivalent
b) 102” H x 48” W x 77” Length (Approximate Overall)
2. Temperature Rating
a) Upper Chamber 1,400° F to 2,000° F
b) Lower Chamber 200° F to 1,100° F
3. Temperature Uniformity
a. Upper Chamber Meets Class 5, +/- 25° F from 1,400° F to 2,000° F
b. Lower Chamber Meets Class 2, +/- 10° F from 200° F to 1,100° F
4. Upper Chamber
a. Maximum temperature – 2300
b. Power rating – Chamber rating is 15KW
5. Heating Elements
a. Heavy gauge coiled Kanthal Fe, Cr, and Al wire fully supported in high temperature cast monolithic holders or equivalent.
6. Insulation (Upper Chamber)
a. Lined with a minimum of 6.5” of insulation consisting of a 4.5” hot face layer of 2300° F insulating brick (IFB) and 2” cold face layer of 1900° F mineral wool or equivalent.
7. Hearth Plate
a. 1” thick cast hearth plate supports the heating element holders, protects the floor insulation and provides a flat working surface or equivalent.
8. Doors
a. A manual counterweighted vertical lift door operated by a hand crank and keeps the hot surface away from the operator or equivalent
b. Door microswitch automatically shuts power off to heating elements when the door is opened.
9. Thermalcouple
a. Two 8-gauge Type (K) thermocouple assemblies (One for control and one for high limit controller) for rapid sensing of the chamber heat. Lead wire connecting to thermocouples to each temperature controller or equivalent.
10. TUS Port
a. Manually removable insulated plug to provide access for Temperature
b. Uniformity Survey thermocouples.
11. SAT Port
a. A thermocouple port within 3” of primary thermocouple for customer to perform system accuracy test (SAT.)
12. Lower Chamber
a. Maximum Temperature – 1,200° F
b. Power Rating is 11 KW.
13. Insulation
a. Lined with a minimum of 4.5” of insulation consisting of a 2.5 hot face layer of 2,300° F insulating brick (IFB) and 2” cold face layer of 1900° F of mineral wool or equivalent.
14. Heating Element
a) Heavy gauge coiled wire mounted on ceramic tubes are located on the side walls external of the liner in the air stream for uniform heat distribution throughout the work area or equivalent.
15. Fan & Motor
a. A high CFM 304 stainless steel fan assembly mounted through the rear wall v-belt driven by a heavy-duty motor or equivalent.
16. Alloy Liner
a. A 16-gauge 304 stainless steel liner forms the work chamber and shields the heating elements and fan assembly. The liner directs the air flow in a horizontal pattern or equivalent.
17. Air Flow
a. The air flows along both side walls between the liner and insulation over the heating element toward the door and returns through the chamber providing uniform heat distribution in the work zone.
18. Door
a. Horizontal Swing door constructed of heavy gauge sheet metal and reinforced. Insulated with firebrick, mineral wool, and castable to create a brick-to-brick seal for reduced heat loss or equivalent.
b. Door microswitch automatically shuts power off to heating elements when the door is opened.
19. Thermalcouple
a. Two 14-gauge Type (K) thermocouple assemblies (one for controller and one for high limit controller) mounted through the rear wall of the oven in the air stream between the oven liner and heating elements for rapid sensing of the chamber heat.
20. TUS Port
a. Manually removable insulated plug to provide access for Temperature Uniformity Survey thermocouples.
21. SAT Port
a. A thermocouple port within 3” of primary thermocouple for customer to perform system accuracy test (SAT.)
22. Power Components
a. Two (2) SCR power supply for solid state control
b. Two (2) Magnetic contactor
c. Two (2) Motor starters
d. 460/230 volt to 115-volt control transformer
e. Set of terminal blocks, instrument fuses and power connection terminals
23. Temperature Controls
a. Two (2) NANODAC 1/4 DIN digital dual loop Controller/Recorder with 3.5 Display and Full Review Software. 100 Programs with 25 segments each and 4 Recording Inputs.
b. Two (2) Eurotherm 1/16 high limit controller with separate thermocouple and contactor for automatic furnace shut down in the event of a high temperature excursion.
c. Two (2) Control switch and fan switch.
24. Fusible Disconnect Switch
a. Fusible disconnect switch wired and mounted on furnace required by OSHA if means of disconnecting power are not located nearby.
6. Delivery. Delivery of Furnace Heat Treating Oven should be no more than 20 weeks after the contract is awarded, and full installation, if included, is no more than 4 weeks after delivery.
7. Government-Furnished Property. None. The Government will not be providing any resources for this project.
8. Security Requirements. As the installation will take place in active aircraft hangars in a secure location, the associated section will provide an escort. This escort will be present to accompany the contractor in the secured location, during the installations, and off of the secured location.
9. Place of Performance. All delivery and installation services on this requirement shall be held at the 452d Maintenance Squadron, March ARB, CA
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