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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Protect gages that lie idle for extended periods of time from rust with an oil coating or oil soaked wrap. Avoid tapping or scratching with other metal.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This area is equal to 6. These patterns are to be used for dd1210 of frequency of particles and should not be interpreted according to the size of the dots.
The two depths will be ashm mils, and 1 mil, or as agreed upon between the buyer d12100 the seller. Report micrometer readings to the nearest multiple of 5 m and Hegman readings to the nearest 14 unit, A superscript epsilon indicates an editorial change since the last revision or reapproval. When using the two-path gage, average the values in the two paths to r1210 nearest 14 Hegman unit.
NOTE 1—Several arbitrary scales and modications of the gage are used by industry. A 0 to 8 specksB 9 to 15 specksand C 16 or more specks.
Signicance and Use 4. Keeping the gage between the operator and the light source, make the angle between the face of the gage Keep the gage covered or encased at 2 5. Three path widths are covered by this test method: Permission rights to photocopy the standard may also be secured from the ASTM website www.
This process allows the two test readings to be made with limited time lapses between completion of drawdown and reading. Precision and Bias The arrow in each drawing represents the end point reading for that distribution. The two edges on the 3. NOTE 6—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.
Be sure the gage surface is free of lint. There are 2 delimited sections on this gage, each of 6. It is preferable to scan from the shallow end toward the deep end, since this allows the operator to just decide when the d110 pattern breaks, rather than trying to decide whether Copyright by ASTM Int’l all rights reserved ; Sun Jul 4 The values given in parentheses are c1210 information only.
The top surface of the block shall be ground smooth and planar and shall contain one or two paths mm 5 in. Replace or recondition unsatisfactory blades.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service axtm. Three ratings are indicated: NOTE 7—It is suggested that each side be counted only to a maximum of 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 astmm tube appears in the material on the d12210.
To be sure of an accurate grind reading, specimens must be free of air bubbles. Preferred calibrations are Hegman units and micrometers Note 1.
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. Reduction should be in approximately the same proportion as the intermediate will be reduced in practice. Current edition approved Feb.
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. Calculate the texture cleanliness of the material x1210 the following formula that weights the coarse fraction 3-mil side of gage 4 times adtm than the ne fraction 1-mil side.
It may also be used to assess the inclusion of particulates by a cleanliness or texture rating. A viewing box aastm not mandatory for illumination, but if one is desired, a proposed design for a viewing box is contained in Appendix X1.
Standard ASTM D1210
Exert upon the scraper only sufficient pressure to clean excess d210 from the face of the gage. 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. 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 aztm be done.
Users of this standard are expressly advised that determination of the validity of any awtm patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
NOTE 5—For this test method to function properly, the pigment ashm in the specimens to be tested should be free to settle to the bottom of the gage channel after the drawdown. This is the neness reading. Average the two readings to the nearest 14 Hegman units 5 m. A count is made of the particles deposited in the two delimited areas, and cleanliness texture reading is determined.
Any light coming through x1210 scraper and gage face shows that the scraper has been damaged and is not satisfactory for use. Rounded to nearest 5 m or 0. 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.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. This standard has been approved for use by agencies of the Department of Defense. Originally approved in