1、October 2011 Translation by DIN-Sprachendienst.English price group 11No 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 11.060.25!$tb“1819263www.din.deDDIN EN ISO 7711-2Dentistry Rotary diamond instruments Part 2: Discs (ISO 7711-2:2011)English translation of DIN EN ISO 7711-2:2011-10Zahnheilkunde Rotierende Diamantinstrumente Teil 2: Scheiben (ISO 7711-2:2011)Englische bersetzung von DIN EN ISO 7711-2:2011-10Mdeci
3、ne bucco-dentaire Instruments rotatifs diamants Partie 2: Disques (ISO 7711-2:2011)Traduction anglaise de DIN EN ISO 7711-2:2011-10SupersedesDIN EN ISO 7711-2:1995-11www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1709.11 DIN EN IS
4、O 7711-2:2011-10 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 106 “Dentistry” in collaboration with Technical Committee CEN/TC 55 “Dentistry” (Secretariat: DIN, Germany). The responsible German body involved in its preparati
5、on was the Normenausschuss Dental (Dentistry Standards Committee), Working Committee NA 014-00-04 AA Rotierende Instrumente. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1797-1 DIN EN ISO 1797-1 ISO 1942 DIN EN ISO 1942 ISO 6892-1 DI
6、N EN ISO 6892-1 ISO 7711-3 DIN EN ISO 7711-3 ISO 8325 DIN EN ISO 8325 Amendments This standard differs from DIN EN ISO 7711-2:1995-11 as follows: a) general requirements for all discs used commonly in the dental laboratory have been included; b) the bore diameter for unmounted discs has been harmoni
7、zed with other International Standards to 1,7 mm; c) the “inner diameter of diamond covered area” has been replaced by “width of diamond coating”; d) requirements for labelling have been included. Previous editions DIN EN ISO 7711-2: 1995-11 National Annex NA (informative) Bibliography DIN EN ISO 17
8、97-1, Dentistry Shanks for rotary instruments Part 1: Shanks made of metals DIN EN ISO 1942, Dentistry Vocabulary DIN EN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature DIN EN ISO 7711-3, Dentistry Diamond rotary instruments Part 3: Grit sizes, designation a
9、nd colour code DIN EN ISO 8325, Dentistry Test methods for rotary instruments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7711-2 July 2011 ICS 11.060.20 Supersedes EN ISO 7711-2:1995English Version Dentistry - Rotary diamond instruments - Part 2: Discs (ISO 7711-2:2011) Mdecine bucco-de
10、ntaire - Instruments rotatifs diamants -Partie 2: Disques (ISO 7711-2:2011) Zahnheilkunde - Rotierende Diamantinstrumente - Teil 2: Scheiben (ISO 7711-2:2011) This European Standard was approved by CEN on 30 June 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which s
11、tipulate 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. This Europe
12、an 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 members are
13、the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
14、 Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref
15、. No. EN ISO 7711-2:2011: EContents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms, definitions and symbols.4 3.1 Terms and definitions .4 3.2 Symbols 5 4 Requirements.6 4.1 Dimensions of discs6 4.2 Preferred sizes .7 4.3 Disc blank .7 4.4 Run-out .8 5 Examples of specific shapes for disc
16、s9 5.1 Disc, very thin, peripheral and rim cutting9 5.2 Disc, thin, peripheral and rim cutting 9 5.3 Disc, thick, peripheral and rim cutting 10 5.4 Disc, thin, peripheral and proximal cutting.11 5.5 Disc, standard, peripheral and proximal cutting12 6 Manufacturers information 13 6.1 Labelling on the
17、 package13 6.2 Published media 14 Bibliography 15 DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 2 Foreword This document (EN ISO 7711-2:2011) has been prepared by Technical Committee ISO/TC 106 “Dentistry” in collaboration with Technical Committee CEN/TC 55 “Dentistry” the secretariat of which is
18、 held by DIN. 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 2012, and conflicting national standards shall be withdrawn at the latest by January 2012. Attention is drawn to the possibili
19、ty that 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. This document supersedes EN ISO 7711-2:1995. According to the CEN/CENELEC Internal Regulations, the national standards or
20、ganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
21、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 7711-2:2011 has been approved by CEN as a EN ISO 7711-2:2011 without any modification. DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 3 1 ScopeThis part of ISO 7711 specifie
22、s requirements for diamond discs used commonly in the dental laboratory for the cutting of dental materials, such as metals, ceramics, plastics or gypsum.In addition, this part of ISO 7711 selects five specific shapes with their specific dimensions.2 Normative referencesThe following referenced docu
23、ments 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.ISO 1797-1, Dentistry Shanks for rotary instruments Part 1: Shanks made of meta
24、lsISO 1942, Dentistry VocabularyISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperatureISO 7711-3, Dentistry Diamond rotary instruments Part 3: Grit sizes, designation and colour codeISO 8325:2004, Dentistry Test methods for rotary instruments3 Terms, definitions an
25、d symbols3.1 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 1942 and ISO 7711-3 and the following apply.3.1.1diamond discdisc partially or totally covered with diamond grit3.1.2discworking part of a rotary instrument with flat round shape, which is int
26、ended to be mounted on a shank intended for use in the dental laboratory for the cutting of dental materials, such as metals, ceramics, plastics or gypsumNOTE For shank, see Figure 1.3.1.3disc blankdisc plate without diamond gritDIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 4 Key1 handpiece2 mand
27、rel3 discFigure 1 Mounting of disc3.2 SymbolsFor the purposes of this document, the following symbols apply (see Figures 2 and 3).b width of diamond coating;d1outer diameter;d2bore diameter;l1thickness of disc blank with diamond grit;l2thickness of disc blank;l3protruding length (see Figure 3);rr ci
28、rcular run-out radial;rx circular run-out axial (lateral).aThe symbol for the circular run-out is the same for the radial run-out, rr, and for the axial run-out, rx.Figure 2 Dimensions for discsDIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 5 Figure 3 Specification of protruding length4 Requiremen
29、ts4.1 Dimensions of discs4.1.1 Bore diameterThe bore diameter for discs, d2, shall be 170005,+mm.4.1.2 Thickness of disc blankThe thickness of disc blank, l2, shall be at least 0,05 mm.4.1.3 Outer diameter and toleranceThe outer diameter of the disc, d1, and the tolerances for the outer diameter sha
30、ll be as specified in Table 1.The tolerances for the width of diamond coating shall be as specified in Table 1.Table 1 Outer diameter and tolerancesDimensions in millimetresNominal sizeOuter diameterd1Tolerances for outer diameter of discd1Tolerances for the width of diamond coatingb65 to 100 6,5 to
31、 10 0/+ 0,20,3 100 to 180 10 to 18 0/+ 0,3 180 to 250 18 to 25 0/+ 0,40,5 250 25 0/+ 0,54.1.4 Width of diamond coatingThe width of diamond coating, b, of the disc is at the discretion of the manufacturer.Tolerances for the width of diamond coating shall be in accordance with Table 1.4.1.5 Thickness
32、of disc blank with diamond grainThe tolerance for the thickness of disc blank with diamond grain, l1, shall be as specified in Table 2.DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 6 The thickness may vary either on one side or on both sides of the disc in the area covered with diamond grain.Tabl
33、e 2 Tolerance of thickness of disc blank with diamond grainDimensions in millimetresDisc plate with diamond grainl1Tolerance 0,3 0,03 0,3 0,044.2 Preferred sizes4.2.1 Preferred outer diametersThe preferred ISO sizes for the outer diameter (disc sizes) for discs are specified in Table 3. Discs with o
34、ther outer diameters are optional.Table 3 Preferred ISO sizesPreferred nominal sizeOuter diameter1601802002204.2.2 Preferred thickness of disc blank with diamond gritThe preferred thickness of disc blank with diamond grit, l1, is specified in Table 4. Discs with other thickness of disc blank with di
35、amond grit are optional.Table 4 Preferred thickness of disc blank with diamond gritDimensions in millimetresPreferred thickness of disc blank with diamond grit0,150,200,250,300,454.3 Disc blank4.3.1 Material for disc blankThe material used for the disc blank shall be stainless steel.DIN EN ISO 7711-
36、2:2011-10 EN ISO 7711-2:2011 (E) 7 The type of steel and the treatment of the steel is at the discretion of the manufacturer.4.3.2 Minimum proof strength of disc blankThe minimum proof strength, Rp0,2, of the disc blank shall be as specified in Table 5.Table 5 Minimum proof strength, Rp0,2, of disc
37、blankThickness of disc blankl2mmMinimum proof strengthRp0,2MPa 0,1 1 000 0,1 800The proof strength shall be tested in accordance with ISO 6892-1.4.3.3 Diamond coveringThe grain size distribution and the colour code used for the diamond covering of the disc shall be in accordance with ISO 7711-3.4.4
38、Run-out4.4.1 Mounting of discThe disc shall be mounted on a mandrel. The mandrel shall be inserted into a dental or technical handpiece.In order to limit the run-out and the bending of the mandrel on which the disc is mounted, the recommended protruding shank length, l3(see Figure 3), is specified i
39、n Table 6.NOTE 1 The protruding length, l3, is recommended, but not mandatory. It is not associated with the run-out measurement.NOTE 2 For the recommended rotational speed of the disc, see the manufacturers instructions for use.Table 6 Recommended protruding length, l3Dimensions in millimetresShank
40、ISO 1797-1l3 1Type 1Type 210154.4.2 Circular run-out RadialThe circular run-out radial, rr, of the mounted discs shall be at a maximum of 0,15 mm.The measuring point is the middle of the disc at the periphery. For more details, see ISO 8325:2004, Figure 1.The circular run-out radial shall be tested
41、in accordance with ISO 8325:2004, 5.8.4.4.3 Circular run-out AxialThe circular run-out axial (lateral), rx, of the mounted discs shall be at a maximum of 0,15 mm.DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 8 The measuring point is at the top side of the disc at the periphery.The circular run-ou
42、t axial shall be tested with a suitable measuring method.5 Examples of specific shapes for discs5.1 Disc, very thin, peripheral and rim cutting5.1.1 These discs shall comply with Figure 4 and Table 7.5.1.2 Minimum proof strength, Rp0,2: 1 000 MPa.Key1 shank in accordance with ISO 1797-1Figure 4 Disc
43、, very thin, peripheral and rim cuttingTable 7 Dimensions and tolerances for discs, very thin, peripheral and rim cuttingDimensions in millimetresNominal sized1b l1l2tol. tol. tol. tol.140 14+030,2 0,30,15 0,03 0,05 0,005160 16 3180 18 3200 20+040,3 0,5220 22 35.2 Disc, thin, peripheral and rim cutt
44、ing5.2.1 These discs shall comply with Figure 5 and Table 8.DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 9 5.2.2 Minimum proof strength, Rp0,2: 1 000 MPa.Key1 shank in accordance with ISO 1797-1Figure 5 Disc, thin, peripheral and rim cuttingTable 8 Dimensions and tolerances for discs, thin, peri
45、pheral and rim cuttingDimensions in millimetresNominal sized1b l1l2tol. tol. tol. tol.160 16+030,1,5 0,30,3 0,03 0,1 0,01180 18 1,5200 20+040,1,5 0,5220 22 1,5250 25 25.3 Disc, thick, peripheral and rim cutting5.3.1 These discs shall comply with Figure 6 and Table 9.5.3.2 Minimum proof strength, Rp0
46、,2: 800 MPa.DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 10 Key1 shank in accordance with ISO 1797-1Figure 6 Disc, thick, peripheral and rim cuttingTable 9 Dimensions and tolerances for discs, thick, peripheral and rim cuttingDimensions in millimetresNominal sized1b l1l2tol. tol. tol. tol.160 16
47、+030,1,5 0,30,55 0,04 0,3 0,02180 18 1,5200 20+040,1,5 0,5220 22 1,5250 25 25.4 Disc, thin, peripheral and proximal cutting5.4.1 These discs shall comply with Figure 7 and Table 10.5.4.2 Minimum proof strength, Rp0,2: 1 000 MPa.DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 11 Key1 shank in accord
48、ance with ISO 1797-1Figure 7 Disc, thin, peripheral and proximal cuttingTable 10 Dimensions and tolerances for discs, thin, peripheral and proximal cuttingDimensions in millimetresNominal sized1b l1l2tol. tol. tol. tol.160 16+030,4,5 0,30,2 0,03 0,1 0,01180 18 5,5200 20+040,6,5 0,5220 22 7,5250 25 9
49、5.5 Disc, standard, peripheral and proximal cutting5.5.1 These discs shall comply with Figure 8 and Table 11.5.5.2 Minimum proof strength, Rp0,2: 800 MPa.DIN EN ISO 7711-2:2011-10 EN ISO 7711-2:2011 (E) 12 Key1 shank in accordance with ISO 1797-1Figure 8 Disc, standard, peripheral and proximal cuttingTable 11 Dimensions and tolerances for disc, standard, peripheral and proximal cuttingDimensions in millimetresNominal sized1b l1l2tol. tol.
