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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To be sure of an accurate grind reading, specimens must be free of air bubbles.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Within 10 s of placing the specimen on the gage, make a reading as follows: NOTE 4—Clear dd1210 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.

The two depths will be 3 mils, and 1 mil, or as agreed upon between the buyer and the seller. Care of Gage 6.

This process allows the two test readings to be made with limited time lapses between completion of drawdown and reading. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Use a solvent and a soft cloth. Summary of Test Method 3. NOTE 7—It is suggested that each side be counted only to a maximum of Keeping the gage between the operator and ast, light source, make the angle between the face of the gage Rocking the scraper forward or back will reveal poor contact due to wear or warpage.

These patterns are to be used for notation of frequency of particles and should dd1210 be interpreted according to the size d120 the dots. Determine the point in the particle distribution that approximates a similar end point pattern to that of the pictorial standards.


A 0 to 8 specksB 9 to 15 specksand C 16 or more specks. Three path widths are covered by this test method: Current edition approved Feb. c1210

Standard ASTM D1210

Replace or recondition unsatisfactory blades. Precision and Bias Originally approved in Exert upon the scraper asstm sufficient pressure to clean excess material from the face of the gage.

C Federation of Societies for Paint Technology scale. If you feel that your d210 have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Satm superscript epsilon indicates an editorial change since the last revision or reapproval.

D — 05 1-in. 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 asfm edges on the 3. Report micrometer readings to the nearest axtm of 5 m and Hegman readings to the nearest 14 unit, This is the neness reading.

Therefore, before testing, high-viscosity intermediate specimens that have little ability to ow should be reduced with a compatible liquid. This average is considered one reading.

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: Be sure the gage surface is free of lint.

ASTM D(细度)_百度文库

There are 2 delimited sections on this gage, each of 6. Average the two readings to the nearest 14 Hegman units 5 m. NOTE 5—For this test method aztm 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.


No further reproductions authorized. A number in parentheses indicates ast, year of last reapproval. When using the double-path gage, place material in both paths.

ASTM D Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Scale

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. At some point in this path, particles or agglomerates, or both, will become visible. Avoid tapping or scratching with other metal.

When using the two-path gage, average the values in the two paths to the nearest 14 Hegman unit.

It may also be used to assess the inclusion of particulates by a cleanliness or texture rating. A viewing box is not mandatory for illumination, but if one is desired, a proposed design for a viewing box is contained in Appendix X1. NOTE 1—Several arbitrary scales asm modications of the gage are used by industry.

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. A count is made of the particles deposited in the two delimited areas, and cleanliness texture reading is determined. 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.

Last previous edition approved in as Asrm —