ASTM D(). Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage. standard by. ASTM D(细度) – Designation: D – 05 (Reapproved ) Standard Test Method for Fin. ASTM D Fineness of Dispersion of Pigment-Vehicle. Systems. Test Specimen At least grams of uniformly mixed solder paste. Equipment/.
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Preferred calibrations are Hegman units and micrometers Note 1. C Federation of Societies for Paint Technology scale. Permission rights to photocopy the zstm may also be secured from the ASTM website www. Summary of Test Method 3. Any light coming through between scraper and gage face shows that the scraper has been damaged and is not satisfactory for use.
ASTM D Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Scale
This average is considered one reading. Do not consider any reading for the reported neness when the time lapse exceeds 10 s. The two protocols for reading the neness are: D — 05 Reapproved Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage1 This standard is issued under the xed designation D; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
Protect gages d11210 lie idle for extended periods of time from rust with an oil coating or oil soaked wrap.
Standard ASTM D1210
Avoid tapping or scratching with other metal. Rocking the scraper forward or back will reveal poor contact due to wear or warpage. Be sure the gage surface is free of lint. NOTE 5—For this test method to function properly, the qstm particles in the specimens to be tested should be free to settle to the bottom of the gage channel after the drawdown.
Originally approved in Exert d12100 the scraper only sufficient pressure to clean excess material from the face of the gage. NOTE 4—Clear nishes may have to be viewed at a lower e1210 or they may have to be opacied with a nely ground colorant or dye in order to see the particles better. The arrow in each drawing represents the end point reading for that distribution.
NOTE 2—Wear or warpage of the scraper may be noted by facing the edge of the scraper down on the smooth level face of the gage, then inspecting the contact edge by means of a strong light, placed behind the gage. The two edges on the 3. When using the double-path gage, place material in both paths. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. These patterns are to be used for notation of frequency of particles and should not be interpreted according to the size of the dots.
It is preferable to scan from the shallow end toward the deep end, since this allows the operator to just decide when the dense pattern breaks, rather than trying to decide whether Copyright by ASTM Int’l s1210 rights reserved ; Sun Jul 4 The two depths will be 3 mils, and 1 mil, or as agreed ast between the buyer and the seller. Rounded to nearest 5 m or 0. This standard has been approved for use by agencies of the Department of Defense.
Current edition approved Feb. The path shall be tapered uniformly d1201 depth lengthwise from about 4 mils m at 10 mm from one end to zero depth at the other with intermediate calibrations in accordance with the depth at those points. Calculate the texture cleanliness of the material using the following formula that weights the coarse fraction 3-mil side of gage 4 times heavier than the ne fraction 1-mil side.
Use a solvent and a soft cloth. The values given in parentheses are for information only. At some point in this path, particles or agglomerates, or both, will become visible. NOTE 7—It is suggested that each side be counted only to a maximum of This area is equal to 6. This process allows the two test readings to be made with limited time lapses between completion of drawdown and reading.
NOTE 1—Several arbitrary scales and modications of the gage are used by industry. Precision and Bias This is the neness reading.
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.