The particle size distribution of a metal powder affects its behavior in P/M processing and other applications of these materials. The test method may be part of. ASTM B Standard Test Method for Sieve Analysis of Metal Powders. standard by ASTM International, 04/01/ View all product details. Most Recent. Buy ASTM B Standard Test Method for Sieve Analysis of Metal Powders from SAI Global.
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A common acceptable practice would be to use either inspection- or calibrationgrade sieves as a master set for quality control of compliance- grade working sieves. Flavoring for foodstuffs, astmm ingredients for pharmaceuticals or corrosion-inhibiting substances in oil production are just a few examples. In many applications within the process, food and life sciences industries, the smallest amounts of a substance must be measured and b124 with a high degree of accuracy — whether in piping or in chemical reactors.
NOTE 3—For some materials, for example brittle and friable materials, the 15 minutes may be too long. Tap the sieve just removed b24 down, on the paper containing the portion that had been retained on it, and brush the back side of the sieve with the? Weigh this fraction to the nearest 0.
Other types of sieve shakers are also available, but their precision and reproducibility have not been determined. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? H214 B09 has identi? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Standard Test Method for Sieve Analysis of Metal Powders
A second set of sieves was chosen by each laboratory from its in-house sieve stock. Place the test portion on the top sieve and close this sieve with a solid cover.
Brush any material adhering to the bottom surface of the sieve and the lower frame with a soft brush into the next? Then fasten the sieve assembly securely in the sieve shaker and operate the machine for a period of 15 minutes.
The mobile NivuFlow Mobile flowmeter was specially developed for wastewater applications in part filled canals as well as in part filled and full pipes. The newly developed Promass A measures such substances drop-for-drop with a precision unmatched worldwide. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
For circulated b2114 or by analogy matched sieves obtained by two laboratories R can be calculated from the following equations: The number of taps per minute shall be between and Originally approved in The hold down arm of the sieve shaker shall be?
Customer comments No comments were found for ASTM B – 07 standard test method b21 sieve analysis of metal powders. Approved April 1, This standard has been approved for use by agencies of the U. The number of rotations per minute shall be between and If used continually, the sieves asym, after a period of time, become less accurate and might no longer meet the requirements set in Speci?
By comparing sieve tests on the same sample, run in both the master set and the working set, a factor can be established for correcting results on the working sieves. The values given in parentheses are for information only. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Other types of sieve shakers are also available, but their precision and reproducibility have not been determined.
Be the first to comment! Standard Series Test Sieves. NOTE 1—The mm diameter sieve is most commonly referenced as an 8 in. For in-house sieves R can be calculated from the following equations: Benefits Highest measuring accuracy for Current edition approved April 1, Series and Tyler Series have also been deleted.
Sieving time may be adjusted for such materials, and the actual time used should be reported along with the test data. No further reproductions authorized. The patented cross correlation technology determines the currently prevailing flow profile in real time providing high accurate results.
ASTM B Standard Test Method for Sieve Analysis of Metal Powders_百度文库
Repeat this process for each sieve in the nest. Series has been asmt and the columns for the Old U. Add the difference between this sum and the mass of the test portion in accordance with Section 6 to the mass of the fraction collected in the pan. Innovation, originality and market relevance: A portion of 40 to 60 g shall be used when the apparent density of the powder is less than g214. The test portion should be obtained in accordance with Practices B No comments were found for ASTM B – 07 standard test method for sieve analysis of metal powders.
Standard – Standard Test Method for Sieve Analysis of Metal Powders ASTM B –
Practice E was followed for the design and analysis of the data. A number in parentheses indicates the year of last reapproval. NOTE 2—Use of a sound proof enclosure is recommended. Precision and Bias4 9.
In addition to the sieves listed in Table 1, a cover and collection pan are also required. Measurement accuracy can be significantly increased by the parallel use of up to three flow velocity sensors.