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ASTM D6625-01

(Practice)

Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus

Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus

SCOPE
1.1 This practice covers the selection of test conditions from Practice G 53 to be employed for exposure testing of polish-coated paint, related coatings, and materials. This practice covers the basic principles and operating procedures for using fluorescent ultraviolet (UV) and condensation apparatus to simulate the deterioration caused by sunlight and water as rain or dew.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

General Information

Status
Historical
Publication Date
09-Feb-2001
ICS
19.020 - Test conditions and procedures in general
87.020 - Paint coating processes
Technical Committee
D21 - Polishes
Drafting Committee
D21.04 - Performance Tests
Current Stage
Ref Project

Relations

Replaced By
ASTM D6625-01(2007) - Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus
Effective Date
01-Feb-2007

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ASTM D6625-01 - Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure ApparatusASTM D6625-01 - Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus
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ASTM D6625-01 - Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D6625–01
Standard Practice for
Conducting a Test of Protective Properties of Polish Applied
to a Painted Panel Using Fluorescent UV-Condensation
Light- and Water-Exposure Apparatus
This standard is issued under the fixed designation D 6625; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Apparatus and Material
1.1 Thispracticecoverstheselectionoftestconditionsfrom 4.1 Fluorescent UV/Condensation Apparatus, complying
Practice G 53 to be employed for exposure testing of polish- with Practice G 53.
coated paint, related coatings, and materials. This practice 4.2 Glossmeter, using an angle of reflection of 60°. The
covers the basic principles and operating procedures for using instrument and the reference standards shall conform to the
fluorescent ultraviolet (UV) and condensation apparatus to requirements prescribed in Test Method D 523.
simulate the deterioration caused by sunlight and water as rain 4.3 Forced-air Oven.
or dew. 4.4 Q Panel, 3 by 6 in. aluminum.
1.2 This standard does not purport to address all of the 4.5 Base Paint Coating—should be a red paint that gives
safety concerns, if any, associated with its use. It is the 100 % loss in gloss after being exposed to the test in this
responsibility of the user of this standard to establish appro- practice. Apply this paint to the 3 by 6 in. aluminum panel
priate safety and health practices and determine the applica- according to the instructions on the spray can. Allow paint
bility of regulatory limitations prior to use. coating to air dry for 24 h followed by 2 h of drying in a
forced-air oven at 50°C.
2. Referenced Documents
4.6 Polishing and Application Cloth— shall be the same
2.1 ASTM Standards: size and type for each sample tested. Separate cloths shall be
D 523 Test Method for Specular Gloss
used for each polish and for the application step and buffing
G 53 Practice for Operating Light- and Water-Exposure step. Materials such as washed cheesecloth, rumple cloth,
Apparatus (Fluorescent UV-Condensation Type) for Expo- flannel, cotton diaper cloth, and nonwoven fabrics are suitable
sure of Nonmetallic Materials
for this purpose. Felt or paper shall not be used.
4.7 Samples of Polish, to be tested.
3. Significance and Use
5. Procedure
3.1 Organic coatings on exterior exposure are subjected to
attack by degrading elements of the weather, particularly 5.1 Apply the test polish to one half of the prepared coated
ultraviolet light, oxygen, and water. This practice may be used
panel. If the polish is a commercially available product, follow
for evaluating the protective behavior of polish film applied to the directions on the container so far as is possible. When in
a coating. This polish-coated coating is then exposed in an
doubt of the application method use the following:
apparatus that produces ultraviolet radiation, temperature, and 5.1.1 Apply the polish, allow it to dry to a haze, and then
water condensation for a given time period.
buff it with a soft cloth to a glossy shine. Equal volumes of test
3.2 No single light exposure apparatus, with or without polishes should be applied when comparing products. Avoid
water, can be specified as a direct simulation of natural
excessively thin or heavy coats of polish. T
...

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Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus

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3.1 Organic coatings on exterior exposure are subjected to attack by degrading elements of the weather, particularly ultraviolet light, oxygen, and water. This practice may be used for evaluating the protective behavior of polish film applied to a coating. This polish-coated coating is then exposed in an apparatus that produces ultraviolet radiation, temperature variation, and water condensation for a given time period.  
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3.1 Organic coatings on exterior exposure are subjected to attack by degrading elements of the weather, particularly ultraviolet light, oxygen, and water. This practice may be used for evaluating the protective behavior of polish film applied to a coating. This polish-coated coating is then exposed in an apparatus that produces ultraviolet radiation, temperature variation, and water condensation for a given time period.  
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4.1 This practice shall be used when ultrasonic inspection is required by the order or specification for inspection purposes where the acceptance of the forging is based on limitations of the number, amplitude, or location of discontinuities, or a combination thereof, which give rise to ultrasonic indications.  
4.2 The acceptance criteria shall be clearly stated as order requirements.
SCOPE
1.1 This practice for ultrasonic examination covers turbine and generator steel rotor forgings covered by Specifications A469/A469M, A470/A470M, A768/A768M, and A940/A940M. This practice shall be used for contact testing only.  
1.2 This practice describes a basic procedure of ultrasonically inspecting turbine and generator rotor forgings. It does not restrict the use of other ultrasonic methods such as reference block calibrations when required by the applicable procurement documents nor is it intended to restrict the use of new and improved ultrasonic test equipment and methods as they are developed.  
1.3 This practice is intended to provide a means of inspecting cylindrical forgings so that the inspection sensitivity at the forging center line or bore surface is constant, independent of the forging or bore diameter. To this end, inspection sensitivity multiplication factors have been computed from theoretical analysis, with experimental verification. These are plotted in Fig. 1 (bored rotors) and Fig. 2 (solid rotors), for a true inspection frequency of 2.25 MHz, and an acoustic velocity of 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s]. Means of converting to other sensitivity levels are provided in Fig. 3. (Sensitivity multiplication factors for other frequencies may be derived in accordance with X1.1 and X1.2 of Appendix X1.)  
FIG. 1 Bored Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging bore surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 2 Solid Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging centerline surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 3 Conversion Factors to Be Used in Conjunction with Fig. 1 and Fig. 2 if a Change in the Reference Reflector Diameter is Required
1.4 Considerable verification data for this method have been generated which indicate that even under controlled conditions very significant uncertainties may exist in estimating natural discontinuities in terms of minimum equivalent size flat-bottom holes. The possibility exists that the estimated minimum areas of natural discontinuities in terms of minimum areas of the comparison flat-bottom holes may differ by 20 dB (factor of 10) in terms of actual areas of natural discontinuities. This magnitude of inaccuracy does not apply to all results but should be recognized as a possibility. Rigid control of the actual frequency used, the coil bandpass width if tuned instruments are used, and so forth, tend to reduce the overall inaccuracy which is apt to develop.  
1.5 This practice for inspection applies to solid cylindrical forgings having outer diameters of not less than 2.5 in. [64 mm] nor greater than 100 in. [2540 mm]. It also applies to cylindrical forgings with concentric cylindrical bores having wall thicknesses of 2.5 [64 mm] in. or greater, within the same outer diameter limits as for solid cylinders. For solid sections less than 15 in. [380 mm] in diameter and for bored cylinders of less than 7.5 in. [190 mm] wall thickness the transducer used for the inspection will be different than the transducer used for larger sections.  
1.6 Supplementary requirements of an optional nature are provided for use at the option of the...

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