ASTM D823 PDF

Akinoran If the coating thickness is too high, coat another panel using a smaller blade clearance. NOTE 13—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. NOTE 3—Suitable traverse speeds for automative coatings usually range from 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 material further with thinner. If the coating thickness is too high, select an applicator blade with a smaller clearance and coat another panel.

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Akinoran If the coating thickness is too high, coat another panel using a smaller blade clearance. NOTE 13—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. NOTE 3—Suitable traverse speeds for automative coatings usually range from 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 material further with thinner.

If the coating thickness is too high, select an applicator blade with a smaller clearance and coat another panel. Place the auxiliary bar in front of the pool of material see Fig. Adjust the air pressure, material? The viscosity range for normal? The machine shall be designed to move the panel holder at a uniform speed past the?

This machine can 1 move the panel holder, with test panel, at a uniform speed through the atomized spray produced by a? Gradually make the aztm pattern move across the panel at a traverse speed of to mm 10 to d83 in. Prior to withdrawal, the panel, attached to the cord, is lowered by hand into the container holding the material.

As the auxiliary bar is pushed by the applicator, it should press the substrate? NOTE 9—Rigid panels shall be cleaned in an approved manner. Data are available3 on a variety of materials and? 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. It is the responsibility of the user of this standard to establish appropriate safety and wstm practices and determine the applicability of regulatory limitations prior to use.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The blade holder shall be designed to accommodate common types of applicator blades and to accept weights for loading the applicator blade. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? The base plate shall hold paper charts?

Steel panels shall be prepared in accordance with the appropriate method in Practice D NOTE 11—Paper charts should be taped down to prevent curling of the edges that causes the wet? It is particularly important that it be used in the ast of metallic coatings for appearance properties, such as gloss and color.

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.

Measure the temperature of the material in the container at the time of application. Begin by aiming the gun at right angles to the panel so that the spray pattern is just beyond the edge of the panel. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Reduce the material to a viscosity suitable for spraying.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Start the motor-drive and coat the test panel. Preparation of Apparatus 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.

Preparation of Apparatus 6. ASTM D e1. Connect the air line hose from the regulator to the air asstm gage which in turn xstm connected to the air inlet of the spray gun. A mechanism shall be provided to stop the blade movement automatically at the end of the draw-down. A number in parentheses indicates the year of last reapproval. It is more reliable for producing uniform?

Use of a multiple hook will permit dipping several panels at one time. NOTE 7—The operating conditions viscosity, percent of nonvolatile matter, and rate of withdrawal are speci? Originally published as D — 45 T. Current edition approved Nov.

Summary of Practices 3. Hold the spray gun tip to mm 10 to 12 in. Typical machines are shown in Fig. TOP Related Posts.

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Download: Astm D823 Pdf.pdf

JoJodal The blade holder shall be designed to accommodate common types of applicator blades and to accept weights for loading the applicator blade. Subsequent reproduction of the same operating conditions should give the same? NOTE 13—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. Summary of Practice If the coating thickness is too high, coat another panel using a faster rate of panel withdraw. Insert the blade in the blade holder and load the holder with weights if needed.

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ASTM D523-08 Standard Test Method for Specular Gloss

A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Department of Defense. The values given in parentheses are for informationonly. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.

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ASTM D823:18

A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Department of Defense. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Referenced Documents2. For the purpose of measuring specular gloss, thestandard surface is polished glass.

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