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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It is particularly important that it be used in the evaluation of metallic coatings for appearance properties, such as gloss and color. The blade holder shall be designed to accommodate common types of applicator blades and to accept weights for loading the applicator blade.

Start the motor-drive and coat the test panel. Measure the temperature of the material in the container at the time of application.

Standard ASTM D823

Adjust the air pressure material? Insert the blade in the blade holder and load the holder with weights if needed. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

It is more reliable for producing uniform? Bake, force-dry, or air-dry the coated panel, in accordance with its type, in a vertical position in a dust-free atmosphere in accordance with Speci?

Users of this standard are expressly advised that determination of the validity of any such 8d23 rights, and the risk of infringement of such rights, are entirely their own responsibility.

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This standard has been approved for use by agencies of the Department of Defense. A number in parentheses indicates the year of last reapproval. The machine shall be designed to move the panel holder at a uniform speed past the?

Summary of Practice 9. Current edition approved Nov. If the coating thickness is too high, coat another panel with fewer passes of the spray pattern or, if this is not feasible, reduce the adtm further with thinner.

Reduce the material to a viscosity suitable for spraying. Operate the spray gun so that it will begin spraying a few seconds before the test d83 enters the spray pattern and continue spraying a few seconds after the test panel leaves astn spray pattern. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Measure thickness on at least three different areas of the test panel asm determine coating uniformity. Subsequent reproduction of the same operating conditions should give the same? Originally published as D — 45 T. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Adjust the air pressure, material?

As the auxiliary bar is pushed by the applicator, it should press the substrate?

ASTM D – Zehntner GmbH

If the coating thickness is too high, select an applicator blade with a smaller clearance and coat another panel. Wind the cord once completely around the pulley of the correct size to give the desired rate of withdrawal. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

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NOTE 7—The operating conditions viscosity, percent of nonvolatile matter, and rate of withdrawal are speci? A axtm equipped with a programmable system can index the spray gun vertically for multiple passes and for multiple coats with selective time delay. Last previous edition D — 92a. Gradually make the spray pattern move across the panel at a traverse speed of to mm 10 to 15 in. Steel panels shall be prepared in accordance with the appropriate method in Practice D Typical machines are shown in Fig.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Summary of Practices 3. Suitable apparatus, is shown in Fig. Use of a multiple hook will permit dipping several panels at one time.

NOTE 4—The width of the spray pattern should be considerably wider than the width of the test panel to assure spray uniformity on the test panel. The viscosity range for normal?