TASK 70-16-05-350-020
1 . General.
A.Metal stamp marking employs the technique of forcing the metal stamp into the surface of the part to be marked thereby displacing parent material.
B.The force applied to the stamp may be instantaneous, as by percussion, or without impact, as by mechanical, or pneumatic or hydraulic press or roller.
2 . Equipment.
Subtask 70-16-05-350-201
A.The following equipment is required for the application of this process.
(1)Metal stamps.
(2)Press (mechanical, hydraulic or pneumatic).
(3)Roller.
3 . Procedure.
Subtask 70-16-05-350-202
A.Prepare part for marking as follows:
(1)Ensure area to be marked is clean and free from debris.
(2)Provide backing support at the location where stamp mark is to be made to prevent any distortion of part.
B.Place metal stamp on the desired area to be marked and apply force.
C.Ensure that proper size-to-depth ratio is maintained.
(1)Characters 0.03-0.08 inch (0.8-2.0 mm) in height require an impression depth of 0.002-0.006 inch (0.05-0.15 mm).
(2)Characters 0.10-0.16 inch (2.5-4.0 mm) in height require an impression depth of 0.006-0.01 inch (0.15-0.3 mm).
D.Carefully remove any surface irregularities caused by the displaced metal.
4 . Quality Assurance.
Subtask 70-16-05-350-203
A.Inspect mark for legibility and high metal.