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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Start the motor-drive and coat the test panel.
ASTM D – Zehntner GmbH
Preparation of Apparatus Connect the air line hose from the regulator to the air pressure gage which in turn is connected to the air inlet of the spray gun.
The values given in parentheses are for information only. 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. The viscosity range for normal?
NOTE 7—The operating conditions viscosity, percent of nonvolatile matter, and rate of withdrawal are speci? ASTM D e1. Insert the blade in the blade holder and load the holder with weights if needed. Subsequent reproduction of the same operating conditions should give the same?
Preparation of Apparatus 6. If the coating thickness is too high, coat another panel using a smaller blade clearance. The blade holder shall be designed to accommodate common types of applicator blades and to accept weights for loading the applicator blade. Wind the cord once completely around the pulley of the correct size to give the desired rate of withdrawal. It is usually less reliable for producing uniform? NOTE 11—Paper charts should be taped down to prevent curling of the edges that causes the wet?
Originally published as D — 45 T. The base plate shall hold paper charts? 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.
Adjust the air pressure, material?
A number in parentheses indicates the year of last reapproval. Prior to withdrawal, the panel, attached to the cord, is lowered by hand into the container holding qstm material.
The panel holder or the gun mount traverse speed shall be adjustable from 7. NOTE 3—Suitable traverse speeds for automative coatings usually range from This machine can asym move the panel holder, with test panel, at a uniform speed through the atomized spray produced by a? If satm feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Standard ASTM D823
Ashm by aiming the gun at right angles to the panel so that the spray pattern is just beyond the edge of the panel. Measure the temperature of the material in d82 container at the time of application. Hold the spray gun tip to mm 10 to 12 in. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
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? Place the auxiliary bar in front of the pool of ast, see Fig. As the auxiliary bar is pushed by the applicator, it should press the substrate? Adjust the air pressure material? 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.
Gradually make the spray pattern move across the panel at a traverse speed of to mm 10 to astmm in.
Summary of Practices 3.