ASD-STAN PREN 9132-2015 Aerospace series Data Matrix Quality Requirements for Parts Marking (Edition P 3).pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 9132 Edition P 3 July 2015 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: Supersedes edition P 2 of January

2、 2005 and will supersede EN 9132:2006 Descriptors: Note Technically equivalent writings published in all IAQG sectors ENGLISH VERSION Aerospace series Data Matrix Quality Requirements for Parts Marking Srie arospatiale Exigences qualit du marquage des pices en code-barres Data Matrix Luft- und Raumf

3、ahrt Data Matrix Qualittsanforderungen fr Teilemarkierung This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It ha

4、s been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the s

5、tandard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement

6、 the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1st July 2015 Comments should be sent within six months after the date of publication to ASD-STAN Quality Domain Copyright

7、2015 by ASD-STAN prEN 9132:2015 (E) 2 prEN 9132:2015(E) RATIONALE This standard has been revised to cleanup the general text/content and reformat the document to the latest format/style guide. This standard was created to provide for uniform quality and technical requirements relative to metallic pa

8、rts marking performed within the aviation, space, and defence industry. This standard can be invoked as a stand-alone requirement or used in conjunction with 9100-series standards (i.e., 9100, 9110, 9120). FOREWORD To assure customer satisfaction, the aviation, space, and defence industry organizati

9、ons must produce and continually improve safe, reliable products that meet or exceed customer and regulatory authority requirements. The globalization of the industry, and the resulting diversity of regional/national requirements and expectations, has complicated this objective. End-product organiza

10、tions face the challenge of assuring the quality of, and integrating, product purchased from suppliers throughout the world and at all levels within the supply chain. Furthermore, suppliers and processors, within the industry, face the challenge of delivering product to multiple customers having var

11、ying quality expectations and requirements. The aviation, space, and defence industry established the International Aerospace Quality Group (IAQG) for the purpose of achieving significant improvements in quality and safety, and reductions in cost, throughout the value stream. This organization inclu

12、des representation from companies in the Americas, Asia/Pacific, and Europe. This document standardizes data matrix quality requirements for parts marking for the industry. The establishment of common requirements, for use at all levels of the supply-chain by organizations, should result in improved

13、 quality and safety, and decreased costs, due to the elimination or reduction of organization-unique requirements and the resultant variation inherent in these multiple expectations. prEN 9132:2015 (E) 3 Contents Page RATIONALE . 2 FOREWORD 2 Foreword . 4 1 Scope 5 1.1 Convention . 5 2 Normative ref

14、erences 5 3 Marking requirements . 6 3.1 General requirements . 6 3.2 Dot peening 6 3.2.1 Description of process 6 3.2.2 Requirements . 7 3.3 Laser . 11 3.3.1 Description of process 11 3.3.2 Limitations 13 3.3.3 Requirements . 14 3.3.4 Metallographic . 15 3.3.5 Quality assurance 16 3.4 Electro-chemi

15、cal etching 16 3.4.1 Description of process 16 3.4.2 Scope 16 3.4.3 Sub-surface marking . 16 3.4.4 Surface marking 17 3.4.5 Components Condition 17 3.4.6 Instructions for determination of electro-chemical etch marking parameters . 17 3.4.7 Stencil material 17 3.4.8 Electrolyte solutions . 18 3.4.9 M

16、arking requirements . 18 3.4.10 Testing 19 3.4.11 Corrosion protection . 19 3.4.12 Quality assurance 19 4 Marking verification . 20 5 Marking validation and monitoring 20 6 Notes . 20 Appendices Appendix A (informative) Dot peening data capacity guidelines for selected surface textures . 21 Appendix

17、 B (informative) Dot peening Recommendation for stylus grinding . 23 Appendix C (informative) Examples of required tolerances with reference to the nominal module sizes for dot peening . 24 Appendix D (informative) Visual quality guidelines Electro-chemical etching 26 Appendix E (informative) Exampl

18、e methodology for checking dot peen characteristics . 27 Figures Figure 1 Angle of distortion 6 Figure 2 Instructions for determination of marking parameters . 7 Figure 3 Minimum module size (inch) by surface texture (inch) 8 prEN 9132:2015 (E) 4 prEN 9132:2015(E) Figure 4 Minimum module size (mm) b

19、y surface texture (m) 8 Figure 5 Definition of ovality . 9 Figure 6 Definition of nominal module size, dot size, and dot center offset . 10 Figure 7 Detail definition of dot size 10 Figure 8 Laser marking data matrix example 11 Figure 9 Diagram illustrating typical laser beam profile at working rang

20、e 12 Figure 10 Instructions for determination of marking parameters . 14 Figure 11 Scale of gray density 14 Figure 12 Diagram showing laser marking with acceptable fill of modules 15 Figure 13 Diagram showing different laser engraved module profiles 15 Tables Table 1 Minimum readable module size by

21、surface texture (Ra) 8 Table 2 Limits for dot size and dot center offset 10 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Quality Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual,

22、 this standard has received approval for Publication. prEN 9132:2015 (E) 5 1 Scope This standard defines uniform quality and technical requirements relative to metallic parts marking performed using “data matrix symbology“ within the aviation, space, and defence industry. ISO/IEC 16022 specifies gen

23、eral requirements (e.g., data character encodation, error correction rules, decoding algorithm). In addition to ISO/IEC 16022 specification, part identification with such symbology is subject to the requirements in this standard to ensure electronic reading of the symbol. The marking processes cover

24、ed by this standard are as follows: Dot Peening Laser Electro-Chemical Etching Further marking processes will be included, if required. Unless specified otherwise in the contractual business relationship, the company responsible for the design of the part shall determine the location of the data mat

25、rix marking. Symbol position should allow optimum illumination from all sides for readability. This standard does not specify information to be encoded. 1.1 Convention The following conventions are used in this standard: The word “shall” indicates mandatory requirements. The word “should” indicates

26、requirements with some flexibility allowed in compliance methodology. Producers choosing other approaches to satisfy a “should” shall be able to show that their approach meets the intent of the standards requirement. The words “typical”, “example”, “for reference” or “e.g.” indicate suggestions give

27、n for guidance only. Appendices to this document are for information only and are provided for use as guidelines. Dimensions used in this document are as follows. Metric millimeter (mm) sizes followed by inches (in) in parentheses, unless otherwise stated. 2 Normative references The following docume

28、nts, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. The following documents sup

29、port the application/use of this standard. When a conflict in requirements between this standard and the referenced documents exist, the requirements of this document shall take precedence. EN 9102, Quality Management Systems Aerospace First Article Inspection Requirement ISO/IEC 16022, Information

30、technology Automatic identification and data capture techniques Data Matrix bar code symbology specification prEN 9132:2015 (E) 6 prEN 9132:2015(E) 3 Marking requirements 3.1 General requirements a. Rows and columns: Rows and columns connected with data matrix symbology shall conform to Error Checki

31、ng and Correcting (ECC) 200 (see ISO/IEC 16022). b. Square versus rectangle: Matrix may be square or rectangular within ECC 200 requirements (see ISO/IEC 16022). Square is preferred for easier reading. c. Quiet zone: The quiet zone (margin) around the matrix shall be equal to or greater than one mod

32、ule size. d. Round surface: If the marking is made on a round/curved surface, the symbol coverage shall be equal to or less than 16% of the diameter or 5% of circumference. e. Symbol size: To facilitate electronic reading of the symbol, the overall symbol size should be less than 25,4 mm (1 000 inch

33、), outside dimension, longest side. Irrespective of matrix size used, the requirements included in this standard shall be applied. f. Angular distortion of the symbol: Angular deviation of 90-degree axes between row and column shall not exceed 7 degrees (see Figure 1). Figure 1 Angle of distortion 3

34、.2 Dot peening 3.2.1 Description of process a. Dot-peen marking technology typically produces round indentations on a parts surface with a pneumatically or electromechanically driven pin, otherwise known as a stylus. Critical to the readability of dot-peen marked symbols are the indented dots shape,

35、 size, and spacing. The dot size and appearance are determined mostly by the stylus cone angle, marking force, and material hardness. The indented dot created should be suitable to trap or reflect light and large enough to be distinguishable from the parts surface roughness. It should also have spac

36、ing wide enough to accommodate varying module sizes, placement, and illumination (see Figure 2). prEN 9132:2015 (E) 7 D eter m i nation of M odul e Si zeD eter m i ne m i ni m um m odul e s i ze accor di ng t o t he s urf ace t ext ure . Se e Tabl e 1 , Fi gure 3 ( i nch ) , or Fi gure 4 ( mm ).C al

37、 cul ation of O ptimum D ot Si zeC al cul ate dot si ze w i t h r egard t o t he above m i ni m um m odul e s i ze i n c hoosi ng s t yl us angl e ( i . e . , 60 , 90 , or 120 ) dependi ng on m axi m um depth al l ow ed by engi neeri ng desi gn r equi rem ents ( see Tabl e 2 f or t he optimum dot si

38、 ze ).D eter m i nation of M atr i x Si zeD eter m i ne m atr i x si ze dependi ng on t he i nfor m ation coded i n t he m atr i x ( ref erence t abl es present ed in Appe ndi x A f or m i ni m um m atr i x si ze based on avai l abl e m ark i ng ar ea ).Se t up m achi ne ( e . g . , hei ght , ai r p

39、ress ure , f orc e ) f or desi red dot geomet ry .M achi ne Set - UpFigure 2 Instructions for determination of marking parameters b. The issues involved in marking and reading dot-peen-marked symbols on metals are different than symbols printed on paper. The first fundamental difference is that the

40、contrast between dark and light fields is created by artificial illumination of the symbol. Therefore, the modules shape, size, spacing, and part surface finish can all affect symbol readability. c. The key to a successful dot-peen marking and reading project is to control the variables affecting th

41、e consistency of the process. Symbol reading verification systems can provide feedback of the process parameters to some extent. Marking system operating and maintenance procedures shall be established to help ensure consistent symbol quality. Regular maintenance schedules should be established to c

42、heck for issues such as stylus wear. d. Additional processes, like machining dedicated surfaces, may be necessary to improve the symbol readability. Cleaning the part surfaces, prior to marking, with an abrasive pad to remove coatings, rust, and discoloration, or using an air knife to blow away exce

43、ss machining fluids, debris, or oil can increase the symbol readability. 3.2.2 Requirements a. Data matrix symbol nominal module size: The surface texture of the part affects the quality of a data matrix symbol produced by dot peening. Table 1 and Figures 3 and 4 show the minimum readable module siz

44、e requirements for the surface texture of the part. The engineering design authority shall approve changes to the minimum module size. prEN 9132:2015 (E) 8 prEN 9132:2015(E) Table 1 Minimum readable module size by surface texture (Ra) Surface Texture (Ra) Minimum Module Size Microinches Micrometers

45、Inches Millimeters 32 0.8 0.0075 0,19 63 1.6 0.0087 0,22 95 2.4 0.0122 0,31 125 3.2 0.0161 0,41 250 6.3 0.0236 0,60 Figure 3 Minimum module size (inch) by surface texture (inch) Figure 4 Minimum module size (mm) by surface texture (m) prEN 9132:2015 (E) 9 b. Data capacity: Tables in Appendix A for d

46、ot peening show the symbol size and the data capacity compared to the nominal module size and the number of rows and columns relative to surface texture. These tables are based on practical testing. c. Data matrix symbol quality requirements: Below are the symbol quality requirements of the data mat

47、rix and marking equipment, but these may vary according to the design requirements and responsibility. Dot depth is subject to engineering design requirements. The dot depth is based upon the requirements for process, environment survivability, and other material considerations. Stylus radius is an

48、engineering design requirement. The maximum tolerance shall not exceed 10% of the stylus radius. Surface color and color consistency may be specified as an engineering design requirement. In order to maximize readability, variation in surface color should be minimized. Stylus cone angle (reference i

49、n Appendix B) is an engineering design requirement. The cone angles permitted are 60, 90, and 120 degrees. The tolerance on the cone angle shall be 2 degrees. For general quality of mark and stylus life, stylus cone angle of 120 degrees is preferred. Stylus point finish shall be polished. Surface texture shall not exceed 32 in or 0.8 m. Guidance instructions for grinding are provided in Appendix B. S