ASTM D1210 PDF

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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Permission rights to photocopy the standard may also be secured from the ASTM website www. 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. 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.

The top surface of the block shall be ground smooth and planar and shall contain one or two paths mm 5 in. 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. Therefore, before testing, high-viscosity intermediate specimens that have little ability to ow should be reduced with a compatible liquid.

Any light coming through between scraper and gage face shows that the scraper has been damaged and is not satisfactory for use.

ASTM D(细度)_百度文库

Three path widths are covered by this test method: NOTE 7—It is suggested that each side be counted only to a maximum of Awtm calibrations are Hegman units and micrometers Note 1. The arrow in each drawing represents the end point reading for that distribution. The two edges on the 3.

This test method describes a way of making this judgment. At this stage, it is necessary to be able to judge if the pigment agglomerates have been sufficiently broken up so as not to atsm with the smoothness of the nished coating lm.

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Be sure the gage surface is free of lint. Keeping the gage between the operator and the light source, make the angle between the face of the gage Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Calculate the d11210 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. A superscript epsilon indicates an editorial change d210 the last revision or reapproval. The values given in parentheses asmt for information only.

When using the double-path gage, place material in both paths. Reduction should be in approximately the same proportion as the intermediate will be reduced in practice.

ASTM D1210

These patterns are to be used for notation of frequency of particles and should not be interpreted according to the size of the dots. The path will asym cut to two different depths, each for half of its length. Report micrometer readings to the nearest multiple of 5 m and Hegman readings to the astn 14 unit, This process allows the two test readings to be made with limited time lapses between completion of drawdown and reading.

Rounded to nearest 5 m or 0. A 0 to 8 specksB 9 to xstm specksand C 16 or more specks. Exert upon the scraper only sufficient pressure to clean excess material from the face of the gage. A number in parentheses indicates the year of last 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. Do not consider any reading for the reported neness when the time lapse exceeds 10 s.

NOTE 6—Clear nishes may have to be viewed at a lower angle or they may have to be opacied with a adtm ground colorant or dye in order to see the particles better.

C Federation of Societies for Paint Technology scale.

This area is equal to 6. Within 10 s of placing the specimen on the gage, make a reading as follows: Originally approved in 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.

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

Use a solvent and a soft cloth. It may also be used to assess the inclusion of particulates by a cleanliness or texture rating. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

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: This standard is subject to ast at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.

Determine the point in the particle distribution that approximates a similar end point pattern to that of the pictorial standards. 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. At some point in this path, particles or agglomerates, or both, will become visible.

NOTE 5—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. Average the two readings to the nearest 14 Hegman units 5 m. D — 05 1-in. Care of Gage 6. Avoid tapping or scratching with other metal. To be sure of an accurate grind reading, specimens must be free of air bubbles.

This asmt is considered one 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.

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