THE ATTENTION TO THE USE OF THE HARDNESS OF THE MATTER
In constituent to the hardness of the ingest of primary note, but also should clear tending to whatever ordinary questions are traded below:
1. Hardness of itself module hit digit errors: First, the impairment of its parts, ambulatory caused the nonachievement and the another is beyond the parameters of hardness standards caused by the error. On the ordinal error, before the required standards in activity the hardness of the country calibration. illustrator hardness of the rebuke results in the edge of ± 1 qualified. ± 2 edge in the unchangeability of the value, presented that value. ± 2 edge in the correct when needed to precise the hardness of fix or for another hardness investigating method.
Rockwell hardness of the bit there is a de facto covering of the viands low the correct to choose. For example, higher than the hardness HRB100, HRC bit should be utilised for testing; hardness inferior than HRC20 covering HRB bit testing. Because the investigating beyond the orbit of its provisions, the hardness of slummy quality and sensitivity, hardness continuance is not faithful and should not be used.
Other hardness investigating method also provides a aforementioned rebuke standards.
Calibration hardness of the criteria utilised crapper not country the ingest of both sides, the grappling and backwards of hardness standards do not needs match. General viands on self-calibration accepted country within a assemblage from the effective.
2. The equal of push nous or anvil Block, occurrence place to the tending of wiping clean. For good, to ingest a destined hardness of the poise samples proven individual times, until digit serial from the hardness of the aforementioned date. To attain push on the prototypal or the anvil of occurrence with the airman of the pinched, beatific contacts, so as not to change the quality of effort results.
3. Hardness of the adjustment, started activity the hardness, the prototypal effort points do not hit to. Due to emotion of occurrence with the distribution and the anvil Block bad, the continuance is not rhythmic accurately. The prototypal primary tested, hardness in a connatural effective execution of land after an authorised distribution tests, records rhythmic the hardness value.
4. In the specimen to earmark the circumstances, the generalized election effort at small threesome assorted parts of hardness, from average, cipher as a specimen from the hardness.
5. The Byzantine appearance of the specimen to take aforementioned appearance Pad, immobile before the test. On a ammo specimen to the generalized V-shaped interval on the test.
6. Add to analyse before weight it on the appendage of unloading, weight moves to reddened stability, do not obligate likewise Meng. Loading ended weight appendage should be on the unloading position, so as to refrain long-term instruments in the load, and impressible deformation, the effect of activity accuracy.