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Roller Flattening
- Carbon steel 3/8 inch to 3 inches thick
- High strength and alloy 3/8 inch to 1-1/2 inches
- Width to 180 inches
- Length to 1,200 inches
- Tolerance - half standard A-6 or better
Press Flattening
- Carbon to 6 inches thick
- High strength to 4 inches thick
- Widths to 150 inches
- Weights to 40,000 pounds
Leveling Equipment
A "five over four" Birdsboro Roller Leveler; originally
installed at the Armco Plate Mill in Houston, Texas, is used for
leveling armor plate.
- 180" wide work roll faces
- 13" diameter work rolls
- 16" diameter back-up rolls
- 6,000 ton total separation force
- Manual and semi-automatic screw positioning
- 375/750 HP drive motors (2)
- 10" x 183" maximum window opening
- 80 foot long powered roller table north of leveler
- 110 foot long powered roller table south of leveler
- Crane capacities: 10 to 40 ton hoist capacities
- Served by four truck doors and one rail siding
Widths:
Lengths:
- 84" Minimum
- 1200" Maximum
Inquire:
- Widths under 48"
- Lengths under 84"
- Thicknesses outside published limits with
carbon over .30
- Tolerance tighter than half-standard
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Grade
(Specified min vs)
Examples of Grade |
Width
Range
< 96" Wide |
Width
Range
> 96" Wide |
Tolerance
(ASTM A-6) |
Ordinary
Carbon
up to 36 KSI
(A-36, Freemax 15, 1018, 1020) |
1/2"
to 3" |
Same |
Half-Standard |
HSLA
(up to 50 KSI)
A-572 GR 42 & 50,
A-588 GR A & B |
1/2"
to 2-1/4"
>2-1/4" to 3" |
Same |
Half-Standard
Standard |
HSLA
(Over 50 KSI) Alloy (up to 100 KSI)
A-572 GR 60 & 65, A-588 GR C & C-QT HY-80 |
1/2"
to 2-1/2" |
1/2"
TO 2" |
Standard |
| Armor
Plate (HY-100) MN-MO-B NI-CR-MO & T-1 |
1/2"
to 1-1/2" |
Same |
Standard |
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