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Reprinted from 496383573 at 01:28 on July 23 2010 read (loading. ..) Comments (0) Categories: Daily lesson current work some of the problems encountered on some vague concept, and now re-review again, recorded the cumulative
Rockwell hardness is the indentation depth of plastic deformation to determine the hardness indicators. To 0.002 mm as a hardness unit. When HB > 450 or the sample is too small,
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with Rockwell hardness test Brinell hardness test, are both indentation test methods. The difference is that it is a measure of the depth of indentation. That is, in the early Yong test force (Fo) and total test force (F) under the sequence, the pressure head (gold steel cone or ball) into the sample surface, the requirement to keep time,
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womens timberland boots, K, etc. 9 scale. One test commonly used in steel hardness scale usually A, B, C, or HRA, HRB, HRC.
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