1、October 2011 Translation by DIN-Sprachendienst.English price group 6No 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).ICS
2、 77.140.50!%(n“2050475www.din.deDDIN 6930-1Stamped steel parts Part 1: Technical delivery conditions,English translation of DIN 6930-1:2011-10Stanzteile aus Stahl Teil 1: Technische Lieferbedingungen,Englische bersetzung von DIN 6930-1:2011-10Pices dcoupes et embouties en acier Partie 1: Conditions
3、techniques de livraison,Traduction anglaise de DIN 6930-1:2011-10SupersedesDIN 6930-1:2010-01www.beuth.deDocument comprises 9 pagesIn case of doubt, the German-language original shall be considered authoritative.09.13 DIN 6930-1:2011-10 2 A comma is used as the decimal marker. Contents Page Foreword
4、 . 3 1 Scope . 4 2 Normative references . 4 3 Flat products . 4 4 Requirements 5 4.1 General . 5 4.2 General tolerances 5 4.3 Surfaces . 5 4.4 Cut edges . 5 4.5 Cut surfaces 6 4.6 Deviation from ordered quantities 6 5 Order information . 6 5.1 General . 6 5.2 Drawings 6 5.3 Material, as-delivered co
5、ndition 6 5.4 Marking 7 6 Heat treatment . 7 7 Tools 7 7.1 Purchaser-tied tools . 7 7.2 Tools not tied to a particular purchaser . 7 8 Inspection and testing 7 8.1 General . 7 8.2 Normal inspection and test methods . 7 8.3 Additional inspection and test methods 8 9 Certification of quality for deliv
6、ery . 8 Bibliography . 9 DIN 6930-1:2011-10 3 Foreword This standard has been prepared by Working Committee NA 026-00-03 AA Stanzteile of the Normenausschuss Federn, Stanzteile und Blechformteile (NAFS) (Springs, Stamped Parts and Moulded Parts Standards Committee). For more information on NAFS, vis
7、it our website at www.nafs.din.de. Attention is drawn to the possibility that some elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. DIN 6930 Stamped steel parts consists of: Part 1: Technical delivery cond
8、itions Part 2: General tolerances Amendments This standard differs from DIN 6930-1:2010-01 as follows: a) normative references have been updated; b) Subclause 4.1 “General” has been included; c) the standard has been editorially revised. Previous editions DIN 6930: 1956x-05 DIN 6934: 1959-08 DIN 693
9、0-1: 1972-01, 1983-01, 2010-01 DIN 6930-1:2011-10 4 1 Scope This standard applies to parts produced exclusively by stamping processes (see DIN 9870-1) from flat steel products with a thickness of over 0,1 mm (called “stampings” for the purposes of this standard). Fine blanking processes (see VDI 290
10、6 Part 5) are not covered by this standard. Delivery conditions as specified in this standard apply whenever reference is made to the standard in drawings or associated documents (such as ordering information). If, as an exception, this standard is also applied to parts made from semi-finished produ
11、cts other than flat products, or from materials other than steel, this shall be agreed separately. The following provisions specify general requirements imposed on stampings by the manufacturer and user. Any deviations from these requirements shall be agreed separately. 2 Normative references The fo
12、llowing referenced standards are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 6930-2, Steel stampings General tolerances DIN 8588
13、, Manufacturing processes severing Classification, subdivision, terms and definitions DIN 9830, Burr heights on stamped parts DIN 9870-1, Terms for stamping practice Production processes and tools General terms and alphabetical survey DIN EN 10204, Metallic products Types of inspection documents VDI
14、 2906 Part 5, Quality of cut faces of (sheet) metal parts after cutting, blanking, trimming or piercing Fine blanking 3 Flat products Stampings are produced from the following flat products, for example: DIN 59200, Flat products of steel Hot rolled wide flats Dimensions, mass, tolerances on dimensio
15、ns, shape and mass DIN EN 10029, Hot-rolled steel plates 3 mm thick or above Tolerances on dimensions and shape DIN EN 10048, Hot-rolled narrow steel strip Tolerances on dimensions and shape DIN EN 10058, Hot rolled flat steel bars for general purposes Dimensions and tolerances on shape and dimensio
16、ns DIN EN 10131, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield strength steel flat products for cold forming Tolerances on dimensions and shape DIN EN 10140, Cold rolled narrow steel strip Tolerances on dimensions and shape DIN 6930-1:2011-10 5 DIN EN
17、 10202, Cold reduced tinmill products Electrolytic tinplate and electrolytic chromium/chromium oxide coated steel DIN EN 10204, Metallic products Types of inspection documents 4 Requirements 4.1 General Stamping processes also include nibbling as specified in DIN 8588 (see 4.5., however). 4.2 Genera
18、l tolerances General tolerances are specified in DIN 6930-2. 4.3 Surfaces With the exception of cut surfaces, the surface condition of the stampings shall be the same as that of the plate/sheet used. Deformation-induced phenomena as a result of the forming process, such as light scale, slight drawin
19、g scratches and slight surface unevenness are unavoidable. Stampings are supplied without corrosion protection. If the surface quality is to meet special requirements, these shall be subject to agreement. Such requirements may relate to the surface being: free of grooves; When viewed within the rang
20、e of “clear visibility” (250 mm without a magnifying lens), no grooves shall be visible. descaled; shot-blasted; pickled; oiled; phosphated; primed; coated; galvanized. 4.4 Cut edges Stampings produced by cutting generally have a burr. Where necessary, the depth and direction of burr shall be agreed
21、 (see DIN 9830 for guideline values for burr depths). If a burr is not permitted (e.g. for functional or safety reasons), special agreements entailing additional procedural steps are required. DIN 6930-1:2011-10 6 4.5 Cut surfaces No requirements are stipulated for the finish of cut surfaces. It sho
22、uld be noted, however, that stampings produced by nibbling have a waved surface owing to the nature of the process. For this reason, the use of nibbling should always be subject to agreement between producer and purchaser. 4.6 Deviation from ordered quantities Deviations from the ordered quantities
23、are permitted within the limits given in Table 1. Table 1 Quantity ordered (mostly determined by manual counting) Permitted deviations over 10 to 50 3 stampings over 50 to 150 5 stampings over 150 to 500 3 % over 500 2 % Quantities ordered by weight 10 % If short quantities are not acceptable to the
24、 purchaser, this shall be agreed at the time the order is placed. 5 Order information 5.1 General If stampings are supplied in accordance with the specified technical delivery conditions, drawings or other information provided by the purchaser shall bear the following reference: Technical delivery c
25、onditions DIN 6930-1 5.2 Drawings The purchasers drawings are decisive for the purpose of production. Drawings that are, by way of exception, prepared by the supplier shall be authoritative if these have been approved by the purchaser. 5.3 Material, as-delivered condition The material (grade) and re
26、quired condition of the stampings on delivery shall be clearly stated. When specifying the as-delivered condition, it shall be borne in mind that, during the forming process, increases in strength may occur that are up to 10 % above the upper strength limit of the initial flat product. For this reas
27、on, the requirements for processing shall be agreed between the purchaser and the manufacturer of the stampings. This can also be important with regard to further processing of the stamping. DIN 6930-1:2011-10 7 5.4 Marking In normal practice, stampings are not usually marked. Marking can, however,
28、be agreed in special cases. 6 Heat treatment In normal industrial practice, stampings are not heat treated after forming, cutting or welding. Heat treatments can, however, be agreed in special cases, such as: stress relieving; soft annealing; normalizing; hardening and tempering. 7 Tools 7.1 Purchas
29、er-tied tools Purchaser-tied tools are tools that are made or procured by the manufacturer of the stampings for the purchaser and at the purchasers expense. The manufacturer of the stampings normally undertakes to maintain, renew and properly store the tools. If a period of three years elapses since
30、 the purchasers last order for stampings made with these tools, the manufacturer of the stampings is not normally bound to keep the tools in his stock any longer. The manufacturer of the stampings shall, however, give the purchaser adequate notice before expiry of this period. 7.2 Tools not tied to
31、a particular purchaser Tools not tied to a particular purchaser are tools for the production of stampings which are not made or procured for a specific purchaser. They are made by and paid for the purchaser himself. He can, therefore, use the tools as he wishes and can modify them or discard them at
32、 his own discretion. 8 Inspection and testing 8.1 General The type and scope of testing and inspection depend on the requirements imposed on the stampings during subsequent processing and in their eventual service. The purchaser alone knows these requirements and shall inform the manufacturer accord
33、ingly. The inspections/tests are divided into two groups. 8.2 Normal inspection and test methods These include checks on the compliance of the stampings with the requirements stated in the order as well as inspection for surface defects and surface cracks in so far as these are visible to the naked
34、eye. DIN 6930-1:2011-10 8 8.3 Additional inspection and test methods These include tests going beyond the normal inspection and test procedures, in particular hardness tests, magnetic crack detection, ultrasonic testing and other techniques. The type and scope of these tests shall be subject to spec
35、ial agreement between the purchaser and manufacturer. 9 Certification of quality for delivery 9.1 Stampings produced with the normal inspection and testing procedures in accordance with 8.2 are delivered without a certificate. 9.2 Where a special agreement has been made (e.g. for an enhanced level o
36、f inspection and testing in accordance with 8.3), the purchaser and manufacturer can agree to provide proof of testing in the form of an inspection document in accordance with DIN EN 10204 (e.g. a “type 3.1 inspection certificate”). DIN 6930-1:2011-10 9 Bibliography DIN ISO 13715, Technical drawings Edges of undefined shape Vocabulary and indication on drawings
