1、October 2015 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 77.140.50!%FmM“2357442www.din.deDIN EN 10359Laser welded tailored blanks Technical delivery conditions;English version EN 10359:2015,English translation of DIN EN 10359:2015-10Laserstrahlgeschweite Tailored Blanks aus Stahlfeinblech Technische Lieferbedingungen;Englische Fassung EN 10359:2015,Engl
3、ische bersetzung von DIN EN 10359:2015-10Flans rabouts laser Conditions techniques de livraison;Version anglaise EN 10359:2015,Traduction anglaise de DIN EN 10359:2015-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.DDocument comprises 16 pages 09.15DIN
4、 EN 10359:2015-10 2 A comma is used as the decimal marker. National foreword This document (EN 10359:2015) has been prepared by Technical Committee ECISS/TC 109 “Coated and uncoated flat products to be used for cold forming” (Secretariat: AFNOR, France). The responsible German body involved in its p
5、reparation was the DIN-Normenausschuss Eisen und Stahl (DIN Standards Committee Iron and Steel), Subcommittee UA 01/2 Oberflchenveredelte Flacherzeugnisse aus Stahl. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10359 July 2015 ICS 77.140.50 English Version Laser welded tailored blanks - Tech
6、nical delivery conditions Flans rabouts laser - Conditions techniques de livraison Laserstrahlgeschweite Tailored Blanks aus Stahlfeinblech - Technische Lieferbedingungen This European Standard was approved by CEN on 20 June 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulat
7、ions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
8、 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN
9、members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po
10、rtugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any
11、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10359:2015 EEN 10359:2015 (E) 2 Contents Page European foreword .3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Requirements .4 5 Tolerances on dimensions and shape 4 6 Destructive testing of weld join
12、ts 5 6.1 Cup test .5 6.2 Cross section .5 Bibliography . 14 DIN EN 10359:2015-10 EN 10359:2015 (E) 3 European foreword This document (EN 10359:2015) has been prepared by Technical Committee ECISS/TC 109 “Coated and uncoated flat products to be used for cold forming”, the secretariat of which is held
13、 by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2016 and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the possibility t
14、hat some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound
15、to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
16、Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 10359:2015-10 EN 10359:2015 (E) 4 1 Scope This European Standard describes the requirements for laser welded tailored blanks made of alloyed and unalloyed steels, of uniform or different steel grades and w
17、ith or without metallic and/or organic coatings, having uniform or different sheet thickness. It applies only to the (Tailored Blanks) as-supplied condition of tailored blanks. After the welding process, tailored blanks are further processed to pressed parts by forming operations under the responsib
18、ility of the processor. In the design of the component due consideration should be given to the fact that the weld seam is less formable in comparison to the base material. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indisp
19、ensable 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. EN 10131, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield streng
20、th steel flat products for cold forming Tolerances on dimensions and shape EN 10143, Continuously hot-dip coated steel sheet and strip Tolerances on dimensions and shape ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications 3 Ter
21、ms and definitions For the purposes of this document, the following term and definition applies. 3.1 tailored blanks laser welded metal sheets of uniform and/or different thickness and/or uniform or different steel grades, both with and without surface coating 4 Requirements As far as the properties
22、 of the components are concerned, the general rules of engineering apply. The suitability of tailored blanks for the processes of the customer is guaranteed in case of appropriate execution of the welding seam, suitable positioning of weld seam in the part to be formed and appropriate lay out of she
23、et thicknesses and steel grades under taking into consideration the requirements of known further processing steps. The criteria laid down in Table 1 have proved to be a practical basis for ordering. Additional specific deviations are admissible and have to be agreed upon at the time of ordering. 5
24、Tolerances on dimensions and shape Regarding tolerances on dimensions and shape the agreements of EN 10131 and EN 10143 shall apply for cold rolled and surface coated wide coils, cut to length sheets and slit coils, which are used for the manufacturing tailored blanks. The relevant tolerance classes
25、 for width, flatness and thickness have to be agreed upon between producer of tailored blank and steel producer. For the general tolerances regarding lengths, angles, coaxiality and symmetry, the precision class c according to ISO 2768-1 shall apply. DIN EN 10359:2015-10 EN 10359:2015 (E) 5 If not a
26、ll edges of the blank were cut, the definition of the dimension has to be according to EN 10143 and EN 10131 also. Specific requirement and other beyond that valid special customer agreement have to be agreed upon between producer of tailored blank / steel producer and customer. 6 Destructive testin
27、g of weld joints 6.1 Cup test Destructive testing of weld joints with cup test is considered as best practice procedure. The evaluation of weld quality is done according to the pictures in Table 2. Frequency of the cup test is minimum once a run. 6.2 Cross section Samples shall be taken minimum 5 mm
28、 from both ends of welds. For measurements, Table 3 applies. Table 1 Requirements Dimensions, surface Criterion Figures Assessment Frequency Shape inspection (Tolerance) Tolerances for linear and angular dimensions without individual tolerance indications according ISO 2768-1, class c, EN 10143, EN
29、10131 or customer specification Shape inspection (Method of measurement) Master sample (Initial sample): Reference points have to be agreed with the customer. Production: measuring of the influential dimensions. Initial parts or master sample for PSWaProduction sample each run Flatness of the entire
30、 blank Figure 1 Deviation h guaranteed acc. to EN 10131 and EN 10143. Furthermore, the “process ability” criterion shall apply. Tighter specification should be agreed between customer and supplier. Initial parts or master sample for PSWa. Production samples each run. Visual. Burr of the entire laser
31、 welded blank Customer specification. Production samples each run. Visual. Surface quality of laser welded blanks According to relevant technical delivery conditions for flat products. Production samples each run. Visual. Oiling of tailored blanks The entire blank shall be free from corrosion produc
32、ts. Oil type and amount of oil at time of steel strip production acc. to customer specification. More than 1,5 g/m2is not state of the art due to process ability Initial parts or master sample for PSWa. Visual each run. DINEN 10359:2015-10EN 10359:2015 (E) 6 Offset of sheets Figure 13 maximal Offset
33、 1,5 mm Initial parts or master sample for PSWa. Production sample one each run. Requirements on weld seam Criterion Figures Assessment Frequency Cracks / Pores / Inclusions / Craters / Lack of fusion Pores, Inclusions: Maximum size of imperfection 0,3 x t2Pore nests: f 0,7 %. No cracks, craters or
34、lack of fusion are allowed. f = surface of pores measured over a length of 100 mm along the weld (parallel cross section) Checked by online-systems. Additional minimum one destructive test (cross section) once a year. Hardness in the area of the weld and HAZ Hardness depends on the defined steel gra
35、des. Initial parts or master sample for PSW (If required). Spatter Scale and smoke residues as well as welding spatter shall not negatively affect the processability nor the downstream processes Initial parts or master sample for PSW. Production samples each run. Burning of zinc coating (total) The
36、maximum width of the entire zinc-free zone is 3 mm for t1 2 mm, and 1+ t1for t 2 mm Customer specification Undercut (Definition: un-fused edge that reduces the carrying cross section) Figure 2 t2 1 mm: h 0,1 mm; t2 1 mm: h 0,1 x t2 Checked by online-systems. Additional minimum one destructive test (
37、cross section) once a year. Excess weld metal Figure 3 t2 1 mm:h 0,1 mm;t2 1 mm: h 0,1 x t2 Checked by online-systems. Additional minimum one destructive test (cross section) once a year. Excessive root penetration Figure 4 t2 1 mm:h 0,1 mm,t2 1 mm: h 0,1 x t2Checked by online-systems. Additional mi
38、nimum one destructive test (cross section) once a year. Upper weld concavity Figure 5 t2 1 mm:h 0,1 mm,t2 1 mm: h 0,1 x t2Checked by online-systems. Additional minimum one destructive test (cross section) once a year. Root concavity Figure 6 t2 1 mm:h 0,1 mm,t2 1 mm: h 0,1 x t2 Checked by online-sys
39、tems. Additional minimum one destructive test (cross section) once a year. Weld sagging Figure 7 t2 1 mm:h 0,1 mm,t2 1 mm: h 0,1 x t2Checked by online-systems. Additional minimum one destructive test (cross section) once a year. DIN EN 10359:2015-10 EN 10359:2015 (E) 7 Mismatch Figure 8 and 9 negati
40、ve mismatch: t2 1 mm:h 0,1 mm,t2 1 mm: h 0,1 x t2positive mismatch: t2 1 mm: h 0,2 mm, t2 1 mm: h 0,2 x t2Furthermore, the processability criterion shall apply. Checked by online-systems. Additional minimum one destructive test (cross section) once a year. Weld cross section Figure 10 The remaining
41、cross section due to weld defects (Undercut, Root concavity, Upper weld concavity, negative mismatch) should not be smaller than: t2 1mm: g 0,80 x t2t2 1 mm: g 0,80 x t2Beginning/end of weld Figure 12 At the beginning and end of the weld areas with a max. length of 2 mm each may occur where the lase
42、r beam is without effect. Furthermore the “processability“ criterion shall apply. Production sample each run. Visual Lack of penetration Figure 11 Lack of penetration is not allowed Checked by online-systems. Additional minimum one destructive test (cross section) once a year. Testing Criterion Figu
43、res Assessment Frequency Testing of weld seam (non- destructive) Figure 12 Each tailored blank is tested with appropriate and ensured test procedures (online). Additional visual inspection is possible. Up to max. 5 mm at the beginning and end of the weld cannot be monitored by state-of-the-art onlin
44、e test procedures. 100 % by online- system Weld seam testing (mechanical and technological) for the series delivery Table 2 Using ensured test procedures with appropriate testing frequency (offline), e.g. the cup test according to EN ISO 20482 or other appropriate standards Once per run Process assu
45、rance by traceability Traceability from stack label back to the batch number of steel sheet or coil. Packaging Criterion Figures Assessment Frequency Packaging As specified by the customer and complying with “stacking deviation” and “stacking height deflection” as defined below. Each stack Visual St
46、ack deviation Figure 14 h 5,0 mm provided that the palette has been designed adequately Each stack DIN EN 10359:2015-10 EN 10359:2015(E)8 Stack height deflection (deflection of tailored blank on top) Figure 15 and 16 The height deviation h of the dimpled blanks in the Stack shall be less than 30 mm
47、compared to the undimpled blank whenever it is technically feasible with regard to blank geometry and design of palette, Furthermore the “processability” criterion shall apply. Each stack Visual t1= thickness of thicker sheet t2 = thickness of thinner sheet h = deviation in mm g = remaining weld thi
48、ckness f = porosity projection fraction aPSW = Part Submission Warrant. DINEN 10359:2015-10EN 10359:2015 (E) 9 Figure 1 Flatness of the blank Figure 2 Undercut Figure 3 Excess weld metal Figure 4 Excess root penetration Figure 5 Upper weld concavity Figure 6 Root concavity Figure 7 Weld sagging Figu
49、re 8 Positive mismatch Figure 9 Negative mismatch with weakening of the weld section Figure 10 Weld cross section Key (from Figure 1 to Figure 10) t1thickness of thick sheet t2thickness of thin sheet (dimpled sheet) h deviation g remaining weld thickness DIN EN 10359:2015-10 EN 10359:2015 (E) 10 Figure 11 Lack of penetration Figure 12 Beginning/end of weld seam Figure 13 Offset of the sheets DIN EN 10359:2015-10 EN 10359:2015 (E) 11 Figure 14 Stack deviation Fig
