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May, 1925 Ibrging- Stamping - Heat Treating 153
N a t i o n a l P r e s s e d M e t a l S o c i e t y F o r m e d
Technical Society Recently Organized to Be Devoted Exclusively
to the Discussion of Pressed Metal Problems—First
T H E need for a pressed metal technical
society as outlined in the January issue
of Forging-Stamping-Heat Treating was
emphasized at a meeting held in Chicago, Saturday,
April 11th, at which time the National
Pressed Metal Society was organized.
Much had been said in the past concerning
the necessity for such a society, but no action
had been taken to effect an organization. At an informal
meeting held in Chicago early in March, the
advisability of forming a society to promote the arts
and sciences connected with the pressing of metals,
and the study of subjects relating to the manufacture
and use of pressed metal parts, equipment and supplies
was discussed from
many angles, and it was the
unanimous opinion of those
present that steps should be
taken that would lead to the
formation of the society. A
meeting of those instrumental
in founding the society
was held Saturday afternoon
preceding the technical session
at which time a constitution
was adopted and officers
elected.
One of the main purposes
of the society is to provide
a satisfactory means for con­
John C. Biemeck
President
Meeting Brings Out Enthusiastic Attendance
tact between the representatives
from all the companies
that manufacture and use
pressed metal products in
order that their various technical problems may be
thoroughly considered.
It is generally conceded that there is a real need
for an organization of this kind and it is, therefore,
pleasing to learn that there is every indication that
the society will receive the whole-hearted support of
those interested in the various branches of the pressed
metal industry. Endorsement of the undertaking
has been given by a large number
of men in the field. This interest has
been manifested by applications for membership
from a considerable number of industrial
executives. The membership dues
are nominal, inasmuch as it will be necessary
to provide only for the actual operating
expenses of the society.
The activities of the society will be
confined to the Chicago district at present,
but chapters will be established in the
large manufacturing districts where the
membership is sufficiently large to warrant
this action. Applications have already
been received from all parts of the country,
which is conclusive evidence that the
formation of the society has been favorably
received. The fact that the society's work
D. L. Mathias
Secretary- Treasurer
will be devoted exclusively to the various
problems connected with pressing of metal
is responsible for the keen interest it has
attracted.
Mr. F. J. Rode, Mechanical Engineer, Marquette
Tool & Manufacturing Company, Chicago,
presented an interesting paper entitled,
"Selecting Pressed Metal Equipment."
The customary practice in determining the equipment
required for the production of pressed metal
parts is to first plan the operations and tools and thenselect
the machines, such as shears, blanking press,
forming press, draw press, etc., whatever the case may
be. It is usually advisable to consider productive
time on pressed metal equipment
not to exceed 2,000
hours over a period of one
yrear when working nine
hours a day, and double that
amount if running a night
shift of ten hours.
If given careful consideration
the type and number of
machines required for any
particular job can easily be
determined and good results
obtained. Frequently, however,
not much attention is
given to the type of machines
required for the vari­
ous operations with the result
that the actual depreciation
charge made against
the parts that are to be made
George E. Wattman
Vice President
on the equipment is not correct. An illustration to
substantiate this statement was taken from two plants
that were producing the same stamping for the same
customer.
One was using a shear and knuckle joint press, the
other an open side crank press. The material produced
was of heavy gauge and required considerable pressure.
Both concerns employed two men
to perform the operation of blanking. The
shear and knuckle joint press, costing a
total of $10,000, produced 10,000 blanks
per day, while the open side blanking
press cost $20,000 and produced 5,000
blanks per dayr.
The depreciation charge that had to
be set up against the shear and knuckle
joint press was $0.60 per 1,000 blanks and
the same charge against the open side
blanking press was $2.00 per 1,000 blanks.
This difference was due to the adaptability
of the knuckle joint press for heavy
pressure. Shears were necessary in this
case to facilitate the handling of the material
through the press, which was not
required in the open side blanking press.
It is sometimes advisable to use two or