 |
|||
|
|
|||
| ||||||||||
|
|  MIL-S-81054A(OS)
TABLE IV.
Inclusion rating.
3.3.1.9.3 Macroetch testing of bars, type I, composition B. Visual
examination of deep-acid-etched reforging stock in sizes up to and
including 36 square inches shall be equal to or better than S2R1C2;
sizes over 36 to and including 100 square inches shall be equal to or
better than S2R2C3 of ASTM E 381. Macroscopic examination of finished
bars is required only if the manufacturers inspection of the micro-
structure at an earlier stage of processing such as forged bars, blooms,
or billets has not been accomplished, Two or more billet slices at least
1/4 inch thick shall be selected to represent each heat of steel from
which material is submitted for acceptance.
3.3.1.10 Surface defects. The steel shall have no imperfections of
a nature or degree that will be detrimental to the stamping, forming,
machining, or fabrication of finished parts.
3.3.1.11 Tolerances. Unless otherwise specified, tolerances for bar
stock shall conform to AMS 2251. Tolerances for forgings shall be as
specified by the applicable engineering documents,
3.3.2 Forgings.
3.3.2.1 Process. Unless a specific process is designated, forgings
shall be formed by any of the following processes:
Smith (flat die)
Hammer die
b.
c.
press die
d.
Hot upset
Ring roll
e.
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals