1、 STD-BSI BS EN LOLbO-ENGL 1999 M 1ib24bb9 080bLb4 778 BRITISH STANDARD Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method) The European Standard EN 101601999 has the status of a British Standard ICs 77.140.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT A
2、S PERMITTED BY COPYRIGH LAW BS EN 10160:1999 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTDmBSI BS EN 10160-ENGL 1997 = Lb24bb9 080b1b5 b04 m Amd.No. IDate BS EN 10160:1999 Comments National foreword This British Standard is the English language version
3、of EN 10160:1999. It supersedes BS 5996: 1993, which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee ISW3, Steels for pressure purposes, to Subcommittee ISER3L2, Steel plates and bars for pressure purposes, which has the responsibility to: - aid enquirem to
4、 understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the K interests informed them in the UK. A list of organizations represented on this s
5、ubcommittee can be obtained on request to its secretaq Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or
6、by using the “Find“ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport in include all the nececsary provisions of a conbct. Users of British Stan- are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity
7、 from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright notice displayed throughout this document indica when the document was last issued. Tiiis British Standar
8、d, having been prepared under the direction of the Engineering Sector Conunittee, was published under the authoritv of the Standards Commikee and comes into effect on 15 November 1999 O BSI 11-1999 I ISBN O 680 32370 6 COPYRIGHT European Committee for StandardizationLicensed by Information Handling
9、Services STD*BSI BS EN LDILbO-ENGL 1999 1b24bb9 OBObLbb 540 W EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10160 Juiv 1999 ICs 77.040.20; 77.140.50 English version Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method) Contrle ultrasonore des pro
10、duits plats en acier dpaisseur gale ou suprieure 6 mm (mthode par rflexion) Ultraschallprfung von Flacherzeugnissen aus Stahl mit einer Dicke grer oder gleich 6 mm (Relexionsverfahren) This European Standard was approved by CEN on 3 March 1999. CEN members are bound to comply with the CENICENELEC In
11、temal Regulations which stipulate the conditions for giving this European Standard the status of a national standard wlhout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN membe
12、r. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members
13、are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland. Italy. Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN Dfi NORMALIS
14、ATION EUROPAISCHES KOMITtE FUR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels D 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10160:1999 E COPYRIGHT European Committee for StandardizationLicensed by Informa
15、tion Handling ServicesSTD.BS1 BS EN 10160-ENGL 3777 Lb24667 08061b7 487 m Page 2 EN 1 O1 60:1999 Contents Foreword 2 1 Scope . 3 2 Normative references .,.,. . . 3 3 Terms and definitions . . 3 4 Principle , 4 5 Personnel . . . . . . . . . . . 4 6 Apparatus . . . . . . . . . . . . . . . . . . . . .
16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 Coupling conditions - Surface condition of the flat product . 6 8 Scanning plan . . . 6 9 Procedure .,. 8 10 Acceptance criteria . . . . . . 9 11 Test report . 10 Annex A (informative) List of equivalent terms in several European
17、languages 14 Foreword This European Standard has been prepared by Technical Committee ECISSFC 2 “Steel physico-chemical and non-destructive testing“, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identi
18、cal text or by endorsement, at the latest by January 2000, and conflicting national standards shall be withdrawn at the latest by January 2000. I According to the CENZENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta
19、ndard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. OBSI 11-1999 COPYRIGHT European Committee for StandardizationLicensed by Information Handling Ser
20、vices STD.BSI BS EN 1ilbO-ENGL 1999 lb2Libb9 O8Oblb8 313 H Page 3 EN 10160:1999 i Scope This European Standard describes a method for the ultrasonic testing of uncoated flat steel product for internal discontinuities. It is applicable to flat product in nominal thickness range of 6 mm to 200 mm of n
21、on-alloyed or alloyed steel, excluding austenitic or austenoferritic steels. However, this standard may be applied to the latter types of steels provided that the difference between the amplitude of the noise signal and that of the echo detection threshold is sufficient for the limit fixed. This sta
22、ndard also defines four quality classes for the flat product body (classes So, Si, S2 and Sg) and 5 classes (Eo, E, E*, E3, E.,) for the edges in accordance with the criteria specified in clause 9. Other methods of testing (e.9. by transmission) or other test equipment may be used at the manufacture
23、rs discretion provided that they give identical results to those obtained under the conditions of this standard. In the event of a dispute, only the method defined in this standard shall prevail. Testing of flat product of thickness less than 6 mm may be the subject of special agreements between the
24、 parties concerned. The inspection is normally carried out in the place of production or on the premises of the supplier. If specified on the order, the inspection may take place in the presence of the purchaser or his representative”. A list of equivalent terms in several European languages is give
25、n in annex A. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendment
26、s to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 473, Qualification and certification of NDT personnel - General principles prEN 1
27、330-4, Non destructive testing - Terminology - Part 4 : Terms used in uifrasoning testing 3 Terms and definitions For the purposes of this European Standard, the definitions given in prEN 1330-4 and the following definitions apply: 3.1 internal discontinuity any imperfection lying within the thickne
28、ss of the flat product, e.g. planar or laminar imperfection, single-plane or multi-plane inclusion bands or clusters NOTE It is referred in the text as discontinuity. 3.2 defect unacceptable internal discontinuity, .e. exceeding the specified maximum size or population density limits 11 In this case
29、, ail steps should be taken to ensure that the production process is not disturbed. OBSI 11-1999 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesSTD-BSI BS EN LDLbO-ENGL 1999 E 1624669 0806369 25T Page 4 EN 1 O1 60:1999 3.3 population density the number of in
30、dividual internal discontinuities of a size greater than a specified minimum size and less than a specified maximum size per specified area of body or length of edge zone 3.4 manual and assisted manual testing testing by an operator applying an ultrasonic probe, or probes, to the flat product surfac
31、e, manually executing the appropriate scanning pattern on the flat product surface and visually assessing ultrasonic signal indications on the electronic equipment screen either by direct viewing or by built-in signal amplitude alarm devices 3.5 automatic and semi-automatic testing testing using a m
32、echanized means of applying the ultrasonic probe or probes to, and executing the appropriate scanning pattern on the flat product surface, together with ultrasonic signal indication evaluation by electronic means. Such testing can be either fully automatic with no operator involvement, or semi- auto
33、matic when the operator performs basic equipment operation functions 4 Principle The method used is based on the reflection of ultrasonic waves (generally longitudinal), the mean direction of which is perpendicular to the surface of the product. The examination consists of: a) locating any discontin
34、uity by comparing the amplitude of the discontinuity echo with the amplitude of the echo of a flat-bottomed hole of a given diameter and located at the same depth as the discontinuity. NOTE reference flat-bottomed hole are taken into consideration; Only those discontinuities giving an echo at least
35、equivalent in amplitude to that of the echo obtained with the b) then determining its area, the contour of the discontinuity being defined by the positions of the centre of the probe corresponding to an echo amplitude of half the maximum amplitude of the discontinuity under consideration (6 dB metho
36、d). The examination is carried out during the first ultrasonic scan for all the flat product thicknesses and from one side only. 5 Personnel Testing is carried out by qualified personnel under the responsibility of a level 3 individual certified in accordance with EN 473. 6 Apparatus 6.1 Description
37、 The detection apparatus shall be equipped with an oscilloscope screen allowing the path of the ultrasonic waves in the flat product to be followed. The oscillograms shall be clearly visible, the peaks corresponding to the successive echoes being sharp and very clear; the apparatus shall be suitably
38、 calibrated and shall be equipped with an amplifier marked in decibels. Both ultrasonic testing apparatus with display monitor and amplifier control graduated in dB, or apparatus without display monitor can be used. Apparatus without display monitor shall be able to carry out automatic amplitude tes
39、ting and evaluation and their unit of measurement shall be calibrated in dB. It shall be possible to regulate amplification, power and time base. O BSI 11-1999 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesPage 5 EN 10160:1999 60 I e I 200 The apparatus inc
40、ludes at least one probe which may be either a probe with a single transducer serving for both emission and reception (single probe) or a double transducer probe (separate emission-reception transducers). The mean direction of the waves emitted and received shall be perpendicular to the surface of t
41、he product. Single or double transducer probe a) b) The probe shall have a frequency and dimensions such that the required sensitivity can be guaranteed throughout the extent of the test field. The single probes shall be such that their dead zone is as small as possible, .e. 15% of the flat product
42、thickness or 15 mm whichever is the smaller. The focusing zone of the double transducer probes shall be adapted to Yie thickness of the flat product. The main dimensions of probes are 10 mm to 25 mm in diameter and the probes shall have a nominal frequency in the range of 2 MHz to 5 MHz. Probes of l
43、arger dimension and of a nominal frequency that is outside the range of 2 MHz to 5 MHz may be used for automatic or semi-automatic testing and/or when the flat product exhibits high attenuation provided that the main requirements of this standard are met. The type of the probe depends on the thickne
44、ss of the flat product as given in Table 1 : Table 1 - Type of probe Nominal thickness of the flat product (e) or depth of any discontinuity zone mm Type of probe I 161e 5 O00 s 1 O00 s 100 S 50 Acceptable clusters of discontinuities Area a) considered mm2 1 O00 s I5 O00 100 5 000 mm2 s 1 000 rnm2 D
45、iscontinuities where the flaw echo has an amplitude greater than the characteristic curve011mm Discontinuities where the flaw echo has an amplitude greater than the characteristic curve 0 8 rnrn Acceptable clusters of discontinuities Dimensions a) (number) considered 100 s 5 1 000 rnm2 NZ (between 0
46、 8 rnm and 0 11 mm) N3 (between 0 5 mm and 0 8 mm) a) Dimensions of each discontinuity in the cluster in question (see 9.2). Maximum number not greater than i0 in the most populated I m x 1 m square 15 in the most populated i m x 1 m square 1 O in the most populated 1 m x 1 m square 1 O in the most
47、populated 1 m x 1 m square O BSI 11-1999 COPYRIGHT European Committee for StandardizationLicensed by Information Handling ServicesPage 12 EN 1 O1 60:1999 EO El E2 E3 E4 Table 5 - Acceptance criteria for flat product edge zone testing 1 O0 50 40 30 20 Permissible individual discontinuity size Maximum
48、 Dimension Class Maximum Area mm s.l.o; 2 O00 1 O00 500 1 O0 50 I Minimum discontinuity dimension considered Lmln mm Permissible number of discontinuities smaller than the maximum area Smax and longer than LmInper 1 m length 50 25 20 15 10 NOTE curves for the 11 mm, 8 mm and 5 mm diameters holes: Fo
49、r product with thickness 2 60 mm, a counting of the discontinuities is carried out using the characteristics - Ed number of discontinuities giving echos with an amplitude between characteristic curves for the 8 mm and 11 mm diameter holes : 3; - E., number of discontinuities giving echos with an amplitude between characteristic curves for the 5 mm and 8 mm diameter holes : 2. O BSI 11-1999 COPYRIGHT European Committee for StandardizationLicensed by Information Handling Services STDmBSI BS EN LOLbO-ENGL 1999 111 1624bb9 080bL78 262 Page 13 EN 1 O1 60:l9
