ASTM A986/A986M Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
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ASTM International
Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
N A986/A986M
Annotation
This specification covers the magnetic particle examination of forged continuous grain flow (CGF) crankshafts intended for medium speed diesel engines.
For the purpose of magnetic particle indication assessment, the crankshaft is divided into four zones of decreasing operational stress. Acceptance criteria have been set for each zone.
The engines to which these crankshafts are fitted are commonly used for diesel electric locomotives, marine propulsion, and power generation. Engines fueled by natural gas also fall into this medium speed category.
Specification A983/A983M is a product specification that covers the manufacture of CGF crankshafts.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
Автоматический перевод:
Стандартная спецификация для магнитного исследования частицы непрерывных гранулярных штамповок коленчатого вала потока
Эта спецификация покрывает магнитное исследование частицы подделанных коленчатых валов непрерывного гранулярного потока (CGF), предназначенных для среднескоростных дизельных двигателей.
