Informējam, ka Sistēma pielāgota darbam ar interneta pārlūkprogrammu Internet Explorer (8. un jaunākām versijām) un Mozilla Firefox (3.6 un jaunākām versijām).
Izmantojot citu interneta pārlūkprogrammu, brīdinām, ka Sistēmas funkcionalitāte var tikt traucēta.
<p>This document specifies a method for the determination of the strength of finished ceramic balls for ball bearings, preferably made of silicon nitride (Si3N4), with ball diameters from 3 mm to 50 mm.</p>
<p>NOTE 1 ISO 26602 specifies the requirements for preprocessed silicon nitride materials for rolling bearing balls. ISO 3290-2 specifies requirements for finished silicon nitride balls for rolling bearings.</p>
<p>NOTE 2 Other test methods to determine ceramic ball strength can be found in Reference [7].</p>
<p>The results of the strength tests slightly depend on the Poisson's ratio. For this reason, all calculations are restricted to a Poisson's ratio ranging from 0,15 to 0,35. This includes the Poisson's ratio of a typical silicon nitride ceramic used as rolling element in ball bearings.</p>
<p>The method can also be used for rolling bearing balls made of other ceramic materials, but the reported prefactors may not be valid.</p>
<p>NOTE 3 Poisson's ratio of isotropic materials can be determined by one of the methods given in ISO 17561.</p>
<p>Because of the (defect controlled) brittle fracture behaviour of ceramic materials, a significant scatter of individual results in the characterization of a series of nominally identical samples can occur.</p>
<p>NOTE 4 A further statistical analysis according to ISO 20501 can be carried out.</p>
Reģistrācijas numurs (WIID)
66358
Darbības sfēra
<p>This document specifies a method for the determination of the strength of finished ceramic balls for ball bearings, preferably made of silicon nitride (Si3N4), with ball diameters from 3 mm to 50 mm.</p>
<p>NOTE 1 ISO 26602 specifies the requirements for preprocessed silicon nitride materials for rolling bearing balls. ISO 3290-2 specifies requirements for finished silicon nitride balls for rolling bearings.</p>
<p>NOTE 2 Other test methods to determine ceramic ball strength can be found in Reference [7].</p>
<p>The results of the strength tests slightly depend on the Poisson's ratio. For this reason, all calculations are restricted to a Poisson's ratio ranging from 0,15 to 0,35. This includes the Poisson's ratio of a typical silicon nitride ceramic used as rolling element in ball bearings.</p>
<p>The method can also be used for rolling bearing balls made of other ceramic materials, but the reported prefactors may not be valid.</p>
<p>NOTE 3 Poisson's ratio of isotropic materials can be determined by one of the methods given in ISO 17561.</p>
<p>Because of the (defect controlled) brittle fracture behaviour of ceramic materials, a significant scatter of individual results in the characterization of a series of nominally identical samples can occur.</p>
<p>NOTE 4 A further statistical analysis according to ISO 20501 can be carried out.</p>
