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BS ISO 23475-1:2021

BS ISO 23475-1:2021

$142.49

Testing method for steel tyre cord – General requirements

Published By Publication Date Number of Pages
BSI 2021 28
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This document specifies test methods of steel cords which are used for tyre reinforcement. Dimension, process properties, mechanical properties and coating test method are all included.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
4 Dimension
4.1 Cord diameter
4.1.1 Measure with micrometre
11 4.1.2 Measure with profile projector
12 4.2 Unravelled filament diameter
4.2.1 Principle
4.2.2 Apparatus
13 4.2.3 Procedure
4.2.4 Expression of results
4.2.5 Test report
4.3 Linear density
4.3.1 Principle
4.3.2 Apparatus
4.3.3 Procedure
14 4.3.4 Test report
4.4 Lay direction and lay length
4.4.1 Lay direction/direction of lay
4.4.2 Trace method for lay length
15 4.4.3 Untwisting method for lay length
17 5 Process property
5.1 Straightness
5.1.1 Principle
5.1.2 Apparatus
5.1.3 Procedure
5.1.4 Test report
5.2 Arc height
5.2.1 Principle
5.2.2 Apparatus
18 5.2.3 Procedure
5.2.4 Test report
5.3 Flare
5.3.1 Principle
5.3.2 Apparatus
5.3.3 Procedure
5.3.4 Test report
5.4 Residual torsion
5.4.1 Principle
5.4.2 Apparatus
5.4.3 Procedure
19 5.4.4 Test report
6 Mechanical property
6.1 Breaking load and elongation at fracture
6.1.1 Principle
6.1.2 Apparatus
20 6.1.3 Procedure
21 6.1.4 Test report
6.2 Elongation between defined forces (EDF)
6.2.1 Principle
6.2.2 Apparatus
22 6.2.3 Procedure
6.2.4 Test report
6.3 Loop test (Elasticity)
6.3.1 Principle
23 6.3.2 Apparatus
6.3.3 Procedure
24 6.3.4 Test report
7 Determination of mass and composition of coating by X-Ray fluorescence spectroscopy
7.1 Principle
7.2 Apparatus
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
7.3.1 Acetone or diethyl ether
7.3.2 Ammonium persulphate (mass fraction >98 %)
25 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
26 7.7 Test report

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BS ISO 23475-1:2021
$142.49