GB/T 38683-2020 Translated English of Chinese Standard. (GBT 38683-2020, GB/T38683-2020, GBT38683-2020): Method of ultrasonic testing for large inclusions in bearing steelhttps://www.chinesestandard.net, 16.10.2020 - 14 Seiten This Standard specifies the testing requirements, testing equipment, equipment calibration, testing process, evaluation and testing report of the ultrasonic testing method for large inclusions in bearing steel. This Standard applies to the testing for internal inclusions in bearing steel bars with a diameter or side length of 35 mm ~ 100 mm by immersion pulse reflection method with longitudinal wave incident probes. Material of other sizes or steel grades may also refer to this Standard. |
Inhalt
| 3 | |
Scope | 4 |
Testing requirements | 5 |
Testing equipment | 7 |
Equipment verification | 8 |
Testing process | 11 |
Equipment calibration | 12 |
Testing report | 14 |
Häufige Begriffe und Wortgruppen
50 Helical lines adjusted Artificial reflector bearing steel bottomed holes Characterization and verification comparison sample compression ratio coupling agent cross-section testing range cuboid sample Cylinder cylindrical samples cylindrical workpiece defect demand parties depth compensation evaluated flat-bottomed holes flaw testing level full cross-section testing full screen height gain factor VK gain VJ gate given in GB/T greater than 100 Helical lines scan inclusions in bearing indicating length large inclusions level see 6.4 main deformation direction main direction meandering scan Scan meet the testing Non-destructive testing Number of echoes probe process testing product standards pulse repetition frequency pulse spacing qualification certificate reference sensitivity requirements of GB/T sample processing scan or scan scanning device scanning grid scanning methods scanning speed screen height FSH sensitivity level side length specified standards or agreements steel ingot supply and demand Table testing requirements testing samples testing sensitivity testing surface testing volume ultrasonic flaw testing verification of ultrasonic