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|  MIL-T-62145E
the metal being welded. All critical arc welds shall be magnetic particle or dye penetrant
inspected prior to painting. The following defects shall not be acceptable:
(a) Welds which are ground flush with the metal
(b) Slug or plug welding
(c) Undersize of fillet welds, overlaps, inadequate fusion and penetration, undercutting
of weldments and vertical down welding
(d) Unremoved slag and spatter
(e) Cracks
(f) Porosity.
Weld penetration shall be such as to provide transference of maximum design stress through the
base metal juncture. Intermittent welding shall be permissible when in accordance with 3.8.1
and 3.8.2.
3.8.1 Welding procedures. The welding procedure shall be recorded prior to production of
any weldment, but no procedure qualification other than workmanship specimens shall be
required.
3.8.2 Factors. The factors listed below, which are applicable, shall be included in the
recorded welding procedure:
(a)
Joint sketch
(b)
Joint type and preparation
(c)
Base metal type and thickness
(d)
Filler metal, size and type
(e)
Position of welding
(f)
Arc-voltage, current range, and polarity
(g)
Manual or machine
(h)
Travel speed, machine only
(i)
Pre-heat and post-heat
(j)
Welding process
(k)
Shielding gas
(l)
Method of cleaning.
3.8.3 Workmanship specimens. Workmanship specimens shall be prepared by the
manufacturer for the body, hoist, subframe, and components to simulate all welding conditions.
The specimens shall represent the minimum acceptable weld quality to be used in production.
Upon submittal of these specimens by the contractor, the quality level and identification shall be
subject to approval by the Government. The specimens shall be prepared using the welding
procedures to be employed in production. Specimens prepared to represent multiple pass welds
shall be made in such a manner as to leave at least two inches of each layer of weld metal
exposed. Approval specimens shall be retained at the contractor's plant.
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