ASTM D823 PDF
ASTM D Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels. Standard Practices for. ASTM D – Designation: D – 95 (Reapproved ) Standard Practices for Producing Films o. Standard ASTM D The following devices are in accordance with ASTM D : ZAA Automatic Film Applicator Coater.
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Current edition approved Nov. The blade holder shall be designed to accommodate common types of applicator blades and to accept weights for loading the applicator blade. Reduce the material to a viscosity suitable for spraying. If the coating thickness is too high, coat another panel using a smaller blade clearance.
Preparation of Apparatus The viscosity range for normal? A superscript epsilon e s823 an editorial change since the last revision asgm reapproval.
The machine shall be designed to move the panel holder at a uniform speed past the?
Standard ASTM D823
It is applicable to the coating of smooth cardboard and paper charts if some means is used to assure that these substrates are held? Use of c823 multiple hook will permit dipping several panels at one time. Gradually make the spray pattern move across the panel at a traverse speed of to mm 10 to 15 in. A suitable apparatus is shown in Fig.
ASTM D – Zehntner GmbH
Adjust the air pressure material? Wind the cord once completely around the pulley of the correct size to give astj desired rate of withdrawal. Start the motor-drive and coat the test panel.
Summary of Practice 9. If you feel that your comments have not received a fair asm you should make your views known to the ASTM Committee on Standards, at the address shown below.
It is the responsibility of the user of this standard to establish f823 safety and health practices and determine the applicability of regulatory limitations prior to use. Preparation of Apparatus 6. NOTE 5—Rectangular containers F-style can with lid cut off are useful because the smaller exposed surfaces of the liquid coating reduces volatile loss.
It is more reliable for producing sstm NOTE 11—Paper charts should be taped down to prevent curling of the edges that causes the wet? The base plate shall hold paper charts? It is usually less reliable for producing uniform? Operate the spray gun so that it will begin spraying a few seconds before the test panel enters the spray pattern and continue spraying a few seconds after the test panel leaves the spray pattern.
If the coating thickness is too high, coat another panel using a faster rate of panel withdraw. Bake, force-dry, or air-dry the coated panel, in accordance with its atm, in a vertical position in s823 dust-free atmosphere in accordance with Speci? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.
Summary of Practice NOTE 9—Rigid panels shall be cleaned in an approved manner. NOTE 4—The width of the spray asym should be considerably wider than the width of the test panel to assure spray uniformity on the test panel. Suitable apparatus, is shown in Fig. Begin by aiming the gun at right angles to the panel so that the spray pattern is just beyond the edge satm the panel. Subsequent reproduction of the same operating conditions should give the same? This standard has been approved for use by agencies of the Department of Defense.