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May, Wii
chain blocks are being installed on all forging machines.
Eighteen Ajax hot saw and burring machines,
one for each forging machine, are provided for cutting
off the stock and smoothing the forgings.
No Accumulation of Scrap Permitted.
No unnecessary scrap or material is allowed to
accumulate around the machines, thus adding to the
comfort of the workmen, which is reflected in increased
production. Scrap buckets are placed at each
producing unit for the accumulation of butt ends and
scrap. These are also designed to fit the electric truck
transportation and after they are filled, are taken out,
picked up by the gantry crane and deposited in the
scrap storage bins located at the north end of the stock
yard. The scrap material is loaded into freight cars
from these bins by the use of an electric magnet in connection
with the gantry crane.
The heating furnaces, Fig. 5, are oil fired and were
constructed by the American Forge Company, each
furnace being designed especially for the particular
type of work it is to handle. Considerable experimenting
was done in order to select an oil burner that
would produce a soft mellow flame so necessary to
insure thorough penetration of heat in the stock. The
Anthony Nebulyte burner was found to be the most
satisfactory in this respect, and the absence of a sharp
cutting flame greatly prolongs the life of the furnace
linings. Hydraulic pressed brick is used exclusively
for the heating furnaces.
Oil Fuel Used Exclusively.
Oil is used throughout for fuel, the storage facilities
consisting of three 50,000 gallon concrete lined underground
tanks. All tanks are equipped with steam
heated coils to insure free circulation of oil to the
pumps. The oil, after being pumped from the underground
tanks is run through a pre-heater and heated
to approximately 180 deg. before delivery to the main
supply line. Oil is delivered to the burners at a constant
pressure of 40 pounds regardless of the number
of furnaces in operation, the pressure being controlled
by an automatic regulator developed by the American
Forge Company. Twin pumps, motor driven, are pro-
FIG. 8 (Right)—A corner in
the finishing department
showing a battery of motor
driven grinders. Box cars
on depressed track shown
in the background.
forging- Stamping - Heat Tieating
FIG. 7—Electric trucks are used throughout the plant for
material handling.
151
vided to guard against shutdown. The oil pumps and
preheater are located in the boiler room.
Air for the furnaces is supplied at a pressure of
two pounds by two General Electric direct motor
driven turbo compressors. These compressors are
connected to a common main so that either one or both
can be used depending upon requirements. Steam is
used for atomizing the fuel oil for the heating furnaces.
Trench Eliminates Overhead Obstructions.
A concrete lined trench for accommodating the oil,
air, steam, water and power lines removes all overhead
obstructions and provides a free crane runway. The
entire shop is served by a 10-ton Niles electric crane.
The rough forgings, after being cut from the bar
stock, are burred and placed in Roura tote boxes and
transported by electric truck to the grinding and inspection
department, Fig. 6, which is located in building
No. 2 just each of the main forge shop. A 10-ft.
space between the two buildings provides adequate
lisrht and ventilation.
FIG. 9 (Left)—Four car type
furnaces are provided for
heat treating.
FIG. 10 (Center)—After heat
treating the forgings are
tumbled to remove scale.