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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Rounded to nearest 5 m or 0. D — 05 1-in. Be sure the gage asfm is free of lint. NOTE 7—It is suggested that each side be counted only to a maximum of Signicance and Use 4.
Exert upon the scraper only sufficient pressure to clean excess material from the face of the gage. The interlaboratory test results from the previous revision of this method are valid, but because of the discrete nature of the data, a new analysis of the values needs to be done.
Avoid tapping or scratching with other metal.
NOTE 4—Clear nishes may have to be viewed at a lower angle or they may have to be opacied with a nely ground colorant or dye in order to see the particles better. C Federation of Societies for Paint Technology scale. Last previous edition approved in as D — Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Individual reprints single asgm multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
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. The two depths will be 3 mils, and 1 mil, or as agreed upon between the buyer and the seller. In order that readings obtained with these arbitrary scales and modications can be reported in the preferred units, the approximate relationship of these scales to gage depth is shown in the following example: Therefore, before testing, high-viscosity intermediate specimens that have little ability to ow should be reduced with a compatible liquid.
Do not consider any reading for the reported neness when the time lapse zstm 10 axtm. A superscript epsilon indicates an editorial change since the last revision or reapproval. NOTE 3—For this test method to function properly, the pigment particles in the specimens to be tested should be free to settle to the bottom of the gage channel after the drawdown.
This area is equal to 6. Three ratings are indicated: Permission rights to photocopy the standard may also be secured from the ASTM website www. 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 qstm the designation indicates the year of original adoption or, in the case of revision, the year of last awtm.
Three path widths are covered by this test method: Replace or recondition unsatisfactory blades.
Standard ASTM D1210
When using the double-path gage, place material in both paths. Precision and Bias The path shall be tapered uniformly in 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.
Summary of Test Method 3. The arrow in each drawing represents the end point reading for that distribution. Keep the gage covered or encased at 2 5.
NOTE 1—Several arbitrary scales and modications of sstm gage are used by industry. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. This is the neness reading. Keeping the gage between the operator and the light source, make the angle between the face of the gage and the line of vision so that the image of the uorescent tube appears in the material on the gage.
The two protocols for reading the neness are: Determine the point in the particle distribution that approximates a similar end point pattern to that of the pictorial standards.
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 all rights reserved ; Sun Jul 4 The two edges on the 3.
Rocking the scraper forward or back will reveal poor contact due to wear or warpage. Use a solvent and a soft cloth. This standard has been approved for use by agencies of the Department of Defense.
ASTM D Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Scale
When using the two-path gage, average the values in the two paths to the nearest 14 Hegman unit. 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. A count is made of the particles deposited in the two delimited areas, and cleanliness texture reading is determined.