ASTM B532-1985(2007) Standard Specification for Appearance of Electroplated Plastic Surfaces《电镀塑料表面外观》.pdf

1、Designation: B 532 85 (Reapproved 2007)Endorsed by AmericanElectroplaters SocietyEndorsed by NationalAssociation of Metal FinishersStandard Specification forAppearance of Electroplated Plastic Surfaces1This standard is issued under the fixed designation B 532; the number immediately following the de

2、signation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification limits t

3、he amounts and types of visualdefects that can be tolerated on decoratively electroplatedsurfaces of plastic products. The quantity of defects permittedshall be specified by the purchaser.2. Referenced Documents2.1 ASTM Standards:2B 374 Terminology Relating to ElectroplatingD 883 Terminology Relatin

4、g to Plastics3. Terminology3.1 DefinitionsSee Terminology B 374 for terms relatingto electroplating. For terms not relating to electroplating, seeTerminology D 883.4. Classification of Surfaces4.1 The appearance of surfaces will be separately evaluateddepending on the prominence of the surface under

5、 conditionsof ordinary use.4.1.1 Surface AThe surface that appears most prominentto the observer, or most likely to be noticed at first glance.4.1.2 Surface BThe surface (usually adjacent to SurfaceA) which is somewhat less prominent to the observer.4.1.3 Surface CThe surface not readily seen by the

6、observer except at an angle, or by special observation.4.1.4 Surface DThe surface not visible to the observerunder conditions of normal use.5. Significance and Use5.1 Where electroplated plastics are used for decorativepurposes, the appearance after plating is important. Thisstandard provides a mean

7、s of evaluating the appearance of thesubstrate and the coating.6. Method of Evaluation6.1 The part under test shall be evaluated in the samerelative position as it will normally be viewed under usualconditions of use.6.2 After proper positioning, the part under test shall beevaluated at a distance o

8、f not less than 600 mm nor more than900 mm from the observer, using diffused daylight-typefluorescent lighting or 1500 to 1600 lm/m2at the surface of thepart being inspected.6.3 The observer shall have 20/20 vision at a distance of 600to 900 mm, corrected with eyeglasses if necessary.7. Appearance G

9、uide7.1 Table 1 limits the extent to which various defects areacceptable on each of the four surface classifications describedin Section 4.7.2 In Table 1 the term “some” assumes that the defectscited are not outstanding, too numerous, or located too closelytogether. The specific number of defects pe

10、rmitted, and theirspacing, shall be specified by the purchaser. The term “no”indicates that the defect cited is not normally acceptable. Theterm “yes” indicates that the defect cited is normally accept-able.8. Keywords8.1 appearance; electroplated plastic1This specification is under the jurisdiction

11、 of ASTM Committee B08 onMetallic and Inorganic Coatings and is the direct responsibility of SubcommitteeB08.08 on Metallic Coatings.Current edition approved Oct. 1, 2007. Published October 2007. Originallyapproved in 1970. Last previous edition approved in 2002 as B 532 79(2002).2For referenced AST

12、M standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoho

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17、ontacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Evaluation of Appearance of Electroplated Plastic SurfacesDefectSurfaceABCDCold shotAno no some yesEjection marksAno no yes yesFlashAno no

18、 no noGate markAnoBsome yes yesParting timeAnoBsome yes yesSink marksCnoBnoByes yesSplayAno no some yesWeld lineAnoBsome yes yesBurnt depositCno no some someCracksCno no no noDPeelingCno no no noDPitsCno no some yesRoughnessCno no some yesScratches, nicksCno some some yesStainingC,Eno no some yesVoi

19、dsCno no some yesBlistersFno no no noDVisible intermediate depositsFno no no someGOff colorFno no some yesRack markFno no no yesStardustingFno no some yesAThese defects arise primarily in the plastic-molding operation.BExistence of these defects should be noted and resolved prior to tool manufacture

20、. A change of design may be required.CThese defects arise in either the plastic-molding or electroplating operation.DBlisters, or peeling, or cracks in the gate area or in the electroplating-rack contact area may be acceptable if the given area is covered or otherwise hidden afterassembly.ENot removable by wiping or cleaning.FThese defects arise primarily in the electroplating operation.GMay occur at rack contacts or low current-density areas.B 532 85 (2007)2