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استاندارد ASTM A 503
در خصوص انجام تست آلتراسونیک بر روی
Forged Cracking Shafts
Scope
1.1 This is an acceptance specification for the ultrasonic
inspection of forged steel crankshafts having main bearing
journals or crankpins 4 in. [100 mm] or larger in diameter.
1.2 This specification covers the testing equipment required
and the test procedure to be followed, and it defines the critical
and noncritical areas and limits of acceptance.
1.3 This specification is intended to cover both continuous
grain flow (CGF) crankshafts for medium and high speed
diesel engines as well as solid (slab) forged crankshafts for
other applications.
1.4 The values stated in either inch-pound units or SI
(metric) units are to be regarded separately as the standard.
Within the text and tables, the SI units are shown in brackets.
The values stated in each system shall be used independently of
the other. Combining values from the two systems may result
in nonconformance with the specification.
1.5 Unless the order specifies the applicable “M” specification designation, the inch-pound units shall be used.
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.