ASTM B532-1985(2014) Standard Specification for Appearance of Electroplated Plastic Surfaces《电镀塑料表面外观标准规格》.pdf

1、Designation: B532 85 (Reapproved 2014) Endorsed by AmericanElectroplaters SocietyEndorsed by NationalAssociation of Metal FinishersStandard Specification forAppearance of Electroplated Plastic Surfaces1This standard is issued under the fixed designation B532; the number immediately following the des

2、ignation 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification limits the

3、 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:2B374 Terminology Relating to ElectroplatingD883 Terminology Relating to

4、 Plastics3. Terminology3.1 DefinitionsSee Terminology B374 for terms relatingto electroplating. For terms not relating to electroplating, seeTerminology D883.4. Classification of Surfaces4.1 The appearance of surfaces will be separately evaluateddepending on the prominence of the surface under condi

5、tionsof 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 theobserv

6、er 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 means of e

7、valuating 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 of not

8、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 Guide7.

9、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 permitte

10、d, 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 of AS

11、TM Committee B08 onMetallic and Inorganic Coatingsand is the direct responsibility of SubcommitteeB08.08 on Metallic Coatings.Current edition approved May 1, 2014. Published May 2014. Originallyapproved in 1970. Last previous edition approved in 2007 as B532 79(2007). DOI:10.1520/B0532-85R14.2For re

12、ferenced ASTM 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, We

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14、nd the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revis

15、ion of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you s

16、houldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be ob

17、tained by contacting 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Evaluation of

18、Appearance of Electroplated Plastic SurfacesDefectSurfaceABCDCold shotAno no some yesEjection marksAno no yes yesFlashAno no no noGate markAnoBsome yes yesParting timeAnoBsome yes yesSink marksCnoBnoByes yesSplayAno no some yesWeld lineAnoBsome yes yesBurnt depositCno no some someCracksCno no no noD

19、PeelingCno no no noDPitsCno no some yesRoughnessCno no some yesScratches, nicksCno some some yesStainingC,Eno no some yesVoidsCno no some yesBlistersFno no no noDVisible intermediate depositsFno no no someGOff colorFno no some yesRack markFno no no yesStardustingFno no some yesAThese defects arise p

20、rimarily in the plastic-molding operation.BExistence of these defects should be noted and resolved prior to tool manufacture. 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 after assembly.ENot removable by wiping or cleaning.FThese defects arise primarily in the electroplating operation.GMay occur at rack contacts or low current-density areas.B532 85 (2014)2