ASTM D2794-93 PDF

Designation: D – 93 (Reapproved ) Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation. Buy ASTM D() Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact) from SAI Global. Purchase your copy of ASTM D – 93() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.

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ASTM D provides a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such a deformation. Food and Beverages Testing Equipments. Graduations are marked in inch-pounds along the slot. Interlaboratory agreement is improved when ranking is used in place of numerical values. Last previous edition approved in as D — 93 e1. Be sure the panel v2794-93 Prepare a minimum of four coated panels for the material.

Film and Foil Testing Instruments. Useful for checking resistance to impact surface damage and penetration for construction materials viz plastic, The base is constructed so that a thin? Pulp and Sheet Making Testing Instruments. Test in a wstm fashion so that all impacts from one height are not made in succession or on one panel.

Conduct the test in the same environment or immediately on removal therefrom.

NOTE 4—Because of the poor reproducibility of this method, the reporting of inch-pounds kilogram-metres in comparing coatings for impact resistance should be restricted to one laboratory. Coatings attached to substrates are subjected to damaging impacts during the e2794-93 of articles and their use in service.

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Originally approved in Touchstone Research Laboratory, Ltd. Once visible cracks have been identified, the test is repeated five times at that level, as well as five times above and below that level. D7294-93 And Gaskets Testing Equipments. Place the test panel in the apparatus with the coated side either up or down as speci?

ASTM D() Standard Testing Instruments

Plastic Bottles Testing Instruments. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Select from list below: Films generally fail by cracking see bottom photowhich is made more visible by the use of a magnifier, by the application of a copper sulfate CuSO4 solution on steel, by the use of a pin hole detector, or by a tape-pull test to determine the amount of coating removed.

Moisten the probe sponge with tap water and slowly draw the probe over the impact area. In its use over many years, this test method for impact resistance has been found to be useful in predicting the performance of organic coatings for their ability to resist cracking caused by impacts.

Marble Floor Tiles Testing Instruments. Summary of Test Method 4. 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.

ASTM_D(Impact)_百度文库

An impact test which is useful for testing paint and coating adhesion is ASTM D, the drop test performed on a universal impact tester see top photo. Non-metal Materials Testing Instruments. By gradually increasing the distance the weight drops, generally 1 inch 25 mm at a time, the point at which failure usually occurs can be determined.

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Plastic Rope Testing Equipments. If no cracks are evident, repeat the procedure at a greater height, increasing 1 in. Filling Line Testing Equipments. Internal Bond Testing Instruments.

After the coatings have cured, a standard weight is dropped a distance to strike an indenter that deforms the coating and the substrate.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. NOTE 3—The copper sulfate solution will not perform properly on zinc-phosphate-treated metal unless the conversion coating cracks.

Composites Material Testing Equipments. Medical Product Testing Instruments. Touchstone offers various kinds of impact testing including Charpy and Izod impact testing and micro-scale impact tests performed inside a scanning electron microscope.

For interlaboratory comparisons, rankings of coatings for d2794-993 resistance should be reported. Impact Resistance Tester For Paint: Our Story Why Presto? Release the weight so that it drops on the indenter.

Universal Impact Testing – ASTM D2794

Adhesive Label Testing Instruments. Wood and Laminates Testing Instruments. Air Permeability Testing Instruments. Impact Strength Testing Instruments.

Electronics and Electrical Testing Equipments. A slot is cut lengthwise on one side of the tube to act as a guide for a cylindrical astk that?

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