GB/T 38683-2020: Method of ultrasonic testing for large inclusions in bearing steel

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Scope

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.

Basic Data

Standard ID	GB/T 38683-2020 (GB/T38683-2020)
Description (Translated English)	Method of ultrasonic testing for large inclusions in bearing steel
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H26
Classification of International Standard	77.040.20
Word Count Estimation	11,120
Date of Issue	2020-03-31
Date of Implementation	2020-10-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration
Summary	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 is applicable to the liquid immersion pulse reflection method longitudinal wave human radiation probe to detect the internal inclusions in bearing steel bars with a diameter or side length of 35 mm to 100 mm. Other sizes or steel materials can also refer to the implementation.