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BS ISO 23475-1:2021 Testing method for steel tyre cord - General requirements, 2021
- National foreword
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Dimension [Go to Page]
- 4.1 Cord diameter [Go to Page]
- 4.1.1 Measure with micrometre
- 4.1.2 Measure with profile projector
- 4.2 Unravelled filament diameter [Go to Page]
- 4.2.1 Principle
- 4.2.2 Apparatus
- 4.2.3 Procedure
- 4.2.4 Expression of results
- 4.2.5 Test report
- 4.3 Linear density [Go to Page]
- 4.3.1 Principle
- 4.3.2 Apparatus
- 4.3.3 Procedure
- 4.3.4 Test report
- 4.4 Lay direction and lay length [Go to Page]
- 4.4.1 Lay direction/direction of lay
- 4.4.2 Trace method for lay length
- 4.4.3 Untwisting method for lay length
- 5 Process property [Go to Page]
- 5.1 Straightness [Go to Page]
- 5.1.1 Principle
- 5.1.2 Apparatus
- 5.1.3 Procedure
- 5.1.4 Test report
- 5.2 Arc height [Go to Page]
- 5.2.1 Principle
- 5.2.2 Apparatus
- 5.2.3 Procedure
- 5.2.4 Test report
- 5.3 Flare [Go to Page]
- 5.3.1 Principle
- 5.3.2 Apparatus
- 5.3.3 Procedure
- 5.3.4 Test report
- 5.4 Residual torsion [Go to Page]
- 5.4.1 Principle
- 5.4.2 Apparatus
- 5.4.3 Procedure
- 5.4.4 Test report
- 6 Mechanical property [Go to Page]
- 6.1 Breaking load and elongation at fracture [Go to Page]
- 6.1.1 Principle
- 6.1.2 Apparatus
- 6.1.3 Procedure
- 6.1.4 Test report
- 6.2 Elongation between defined forces (EDF) [Go to Page]
- 6.2.1 Principle
- 6.2.2 Apparatus
- 6.2.3 Procedure
- 6.2.4 Test report
- 6.3 Loop test (Elasticity) [Go to Page]
- 6.3.1 Principle
- 6.3.2 Apparatus
- 6.3.3 Procedure
- 6.3.4 Test report
- 7 Determination of mass and composition of coating by X-Ray fluorescence spectroscopy [Go to Page]
- 7.1 Principle
- 7.2 Apparatus [Go to Page]
- 7.2.1 WDXRFS or EDXRFS
- 7.2.2 Analytical balance, which can be read to the nearest 0,001 g.
- 7.2.3 Dispenser, with the accuracy of 25,00 ml ± 0,05 ml.
- 7.2.4 X/Y shaker, with variable frequency.
- 7.3 Reagents [Go to Page]
- 7.3.1 Acetone or diethyl ether
- 7.3.2 Ammonium persulphate (mass fraction >98 %)
- 7.3.3 Ammonia (mass fraction >25 %, not more than “d=0,91” at temperature 20 °C)
- 7.3.4 Stripping solution, for 1 l: weigh 16 g ammonia persulphate into a beaker of 600 ml and dissolve in 400 ml demineralized water. Transfer quantitatively into a 1 l volumetric flask. Add 120 ml ammonia. Fill up to the mark with demineralized water. Sh
- 7.3.5 Standard, the matrix and range should cover the sample range. Prepare the calibration standards according to the XRFS user’s manual or according to an example in Table 1.
- 7.4 Preparation of test samples
- 7.5 Procedure
- 7.6 Expression of results
- 7.7 Test report [Go to Page]
