pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 229)<br />
building is open at its northern and southern end in order to<br />
provide a clear passageway to the batch furnace building and the<br />
bar stocking and finishing building. The eastern and western<br />
walls of the building are constructed of brick. Three rows of<br />
segmented archway windows run along the western wall of the<br />
building. The building's corrugated metal roof and monitor are<br />
supported by Fink trusses. A 25/5-ton capacity E.O.T. crane<br />
rests on top of a craneway running the length of the building.<br />
The extant equipment and structures inside of the building<br />
make up the rolling facilities for the 22" bar mill and the scale<br />
and waste water collection system. The following integrates a<br />
description of the extant equipment in the rolling facilities and<br />
the scale and waste water collection system with a statement of<br />
their function.<br />
1. Rolling facilities: With the exception of one die<br />
rolling 22" finishing roll stand, the equipment making up the 22"<br />
bar mill is laid out linearly near the eastern wall of the<br />
building. The mill ran from south to north. First in line is<br />
the descaler which is located at the southern end of the<br />
building. Consisting of an approximately 6' wide x 4' long x 3 1<br />
deep, three sided 1/4" thick steel plate frame that covers a<br />
series of water jets, the descaler removed scale from each billet<br />
which had been transferred from the batch furnaces to the bloom<br />
delivery table.<br />
After passing through the descaler, each billet was conveyed<br />
onto the entry table of the United 3-high 28" roughing roll<br />
stand. The entry and exit tables of the roll stand were<br />
hydraulically raised and lowered as each billet was passed back<br />
and forth on the table's electric motor powered rollers through<br />
the stand 1 s upper and lower set of rolls. Three motor powered<br />
hydraulic pumps, used for activating the entry and exit tables of<br />
the 28" roll stand, are located in an approximately 20* wide x<br />
100' long x 10' high corrugated metal shanty located just west of<br />
the roll stand.<br />
After several passes through the 3-high roughing stand, the<br />
bars were conveyed onto a 63*-2" long motor powered movable<br />
travelling table. The table, which is set on top of rails<br />
running in an east-west direction, delivered the bars to one of<br />
two United 22" 2-high reversing finishing stands. The finishing<br />
stands are laid out linearly on an east-west axis, approximately<br />
30' apart. One finishing stand is directly south of the 28"<br />
roughing stand near the eastern wall of the building. The other<br />
finishing stand was used only in the production of die rolled<br />
products. The bars were finished into round cross-sections<br />
ranging from 2 5/8" diameter to 9 1/2" diameter, into square