MIL-F-80056 Furnaces, Heat Treating, Electric, Bath TypeThis specification covers bath type, electrically heated, heat treating furnaces of the round and rectangular pot design with equipment and accessories specified in section 3. The requirements set forth in this specification and the completed ordering data \(paragraph 6.2\) establish the Government\'s minimum requirements for each procurement.

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MIL-F-80056C

3.6 Performance requirements. Each furnace shall be capable of continuous

operation at its maximum operating temperature. Temperature variation within the

working area of the bath shall be not more than plus or minus

from any preset

temperature within the operating range of the furnace after the temperature has

stabllized at set point. The furnace shall be of such design and construction that

it will provide a stable support for the bath material and a load in the bath of

not less than 125 pounds per cubic foot of bath capacity.

Unless otherwise

specified (see 6.2), minimum power input requirements shall be as specified in the

tables herein for the type, class, and size furnace required.

3.7 Standard equipment. All standard equipment normally provided with the

manufacturer's commercial furnace shall be furnished.

3.8 ODtional and accessory equipment. Optional and accessory equipment shall be

furnished as specified and fully described (see 6.2). The equipment provided shal

be functional without requiring modification of the equipment or furnace.

3.9

Marking on instruments. control panels. charts, and plates. All words on

instruments, control panels, charts, and plates shall be in the English language.

Characters shall be permanently marked in boldface on a contrasting background.

All plates shall be corrosion resistant.

3.9.1 Lubrication plate. When specified (see 6.2), a lubrication plate shall be

attached to each furnace. Unless otherwise specified (see 6.2), the information

provided on the plate shall be as listed below:

Points of lubricant application

Servicing interval

Type of lubricant

Federal or military specification for each lubricant (if applicable)

3.9.2 Nameplate. A nameplate shall be securely attached to each furnace. Unless

otherwise specified (see 6.2), the nameplate shall contain the information listed

below:

Nomenclature

Manufacturer's name

Manufacturer's model designation

Manufacturer's serial number

Power input (volts, total amps, phase, frequency)

Amp rating of largest motor

Short circuit/over-current protection rating

Contract number or order number

National Stock Number or Plant Equipment Code

Date of manufacture

3.10 Workmanship. Workmanship of the furnace and its accessories shall meet all

requirements specified herein.