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Surface Roughness Ra, Rz, Ry
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Ra-- in the sampling length L within the outline of the arithmetic mean of the absolute value of the offset Rz-- within the sampling length and average value of the five largest profile peak height and the average of the five largest outline of a deep valley. Ry-- between sampling length L within peak contour lines and contour line from the bottom.
Evaluation of the nature of internal defects, causes of defects and preventive measures ⑤
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The echo height is large, the wave amplitude is wide, and there will be multiple peaks. When the ultrasonic flaw detector probe is translated, the reflected wave continuously changes in the amplitude of the reflected wave.
Evaluation of the nature of internal defects, causes of defects and preventive measures ④
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When the ultrasonic probe is translated, the waveform is relatively stable. When detecting on both sides, the reflected wave amplitude is different, and sometimes it can only be detected from one side.
Evaluation of the nature of internal defects, causes of defects and preventive measures ③
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When the ultrasonic flaw detector probe is translated, the waveform is relatively stable, and roughly the same reflected wave amplitude can be obtained when detecting flaws on both sides of the weld.
Evaluation of the nature of internal defects, causes of defects and preventive measures ②
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The echo signal of point-like slag inclusion is similar to that of point-like stomata. The echo signal of strip-like slag inclusion is mostly sawtooth and the amplitude is not high.
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Since the first Leeb hardness tester in China was developed by TIME Group Inc., we have been devoted to producing the best testing instruments for over 30 years. Now TIME is not only a reliable manufacturer of precision measuring equipments, but also an expert in providing solutions for a wide variety of industries. Some examples inlucde:

Surface Roughness Ra, Rz, Ry
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TIME2113 tests on the standard blocks.
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TIME2190 THRU-COATING FUNCTION
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Evaluation of the nature of internal defects, causes of defects and preventive measures ⑤
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