ISO 1797-1-2011 pdf download.Dentistry-Shanks for rotary instruments – Part 1: Shanks made of metals The requirement for the shank cylindricity covers the fting length, 1, of the shank with the exception of the shank end geometry. Test in accordance with 6.3. 5.4 Surface roughness The surface roughness, Ra, shall be for a) Type 1, Type 2, and Type 4: s1 um; b) Type 3:≤0,5 um, as it is located and shown in Figure 4 to Figure 7. Test in accordance with 6.4. 5.5 Vickers hardness The Vickers hardness for shanks made of metallic material, shall be not less than 250 HV5. Test in accordance with 6.5. 5.6 Marking Marking, if envisaged, should be outside the ftting length, 1. If the marking is applied within the fting length, 14, the outside diameter of the shank with the marking shall not exceed the effective diameter of the shank. Marking shall be resistant to reprocessing procedures as disinfection, cleaning and sterilization according to the manufacturer’s instructions. 6 Test methods 6,1 Shank diameter Measurornents of the shaw* matet shall be made MOi sumabte measurmg debices thaI have an accuracy of 0,001 nn ‘fli, accuracy of IFi. rn..i.jnn devk, stief be verified, The shank diameter. J1 shall be measured by traversaig the length. ? 6.2 Other dimensions Measuiements sh be made in accordanc, with ISO 5325 wIth siable measurng devices islth an accuracy of 0.01 mm. The ajracy of the meunnq device shall be ver4ed 6.3 Shank cyllndrlclty The test method left the deuetlon of the manufacturer. 6.4 Surface roughness Test tiw surface roughness In accordance with ISO 3274 and ISO 4285. 6.5 Vlckers hardness Test the hardness In accordance with ISO 6507-I. 7 Quality control 7.1 Types of shank For the purpose of a*y conbi. the shanks of the inetrurnants shstl be classified as given In Clause 4. 7.2 Defects 7.2.1 liMier defects Major defects shall be those deviations from the speoficalions listed in Table 2. Macr defects indude only those ema eficti evenI an wisvument from operating. 7,22 MInor defects Minor iefectb sI be oil deviations In sting *11ensns not listed In Tatfe 2 MInor defects indude a o4lwr deviations from the specification whidi l the quality of the instrument Acceptable qualay leveb e rven in Aonez A.ISO 1797-1 pdf download.
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