pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 229)
building is open at its northern and southern end in order to
provide a clear passageway to the batch furnace building and the
bar stocking and finishing building. The eastern and western
walls of the building are constructed of brick. Three rows of
segmented archway windows run along the western wall of the
building. The building's corrugated metal roof and monitor are
supported by Fink trusses. A 25/5-ton capacity E.O.T. crane
rests on top of a craneway running the length of the building.
The extant equipment and structures inside of the building
make up the rolling facilities for the 22" bar mill and the scale
and waste water collection system. The following integrates a
description of the extant equipment in the rolling facilities and
the scale and waste water collection system with a statement of
their function.
1. Rolling facilities: With the exception of one die
rolling 22" finishing roll stand, the equipment making up the 22"
bar mill is laid out linearly near the eastern wall of the
building. The mill ran from south to north. First in line is
the descaler which is located at the southern end of the
building. Consisting of an approximately 6' wide x 4' long x 3 1
deep, three sided 1/4" thick steel plate frame that covers a
series of water jets, the descaler removed scale from each billet
which had been transferred from the batch furnaces to the bloom
delivery table.
After passing through the descaler, each billet was conveyed
onto the entry table of the United 3-high 28" roughing roll
stand. The entry and exit tables of the roll stand were
hydraulically raised and lowered as each billet was passed back
and forth on the table's electric motor powered rollers through
the stand 1 s upper and lower set of rolls. Three motor powered
hydraulic pumps, used for activating the entry and exit tables of
the 28" roll stand, are located in an approximately 20* wide x
100' long x 10' high corrugated metal shanty located just west of
the roll stand.
After several passes through the 3-high roughing stand, the
bars were conveyed onto a 63*-2" long motor powered movable
travelling table. The table, which is set on top of rails
running in an east-west direction, delivered the bars to one of
two United 22" 2-high reversing finishing stands. The finishing
stands are laid out linearly on an east-west axis, approximately
30' apart. One finishing stand is directly south of the 28"
roughing stand near the eastern wall of the building. The other
finishing stand was used only in the production of die rolled
products. The bars were finished into round cross-sections
ranging from 2 5/8" diameter to 9 1/2" diameter, into square