ISO 17076-1-2020 pdf download

ISO 17076-1-2020 pdf download.Leather- Determination of abrasion resistance – Part 1: Taber@ method. 7.2.3 Fit a prepared and mounted test piece (f2) to the test piece holder. 7.2.4 Lower the abrasive wheels onto the test piece, turn on the vacuum (i9), switch on the machine and run for the specified number of cycles. 7.2.5 Stop the machine and remove the test piece. Examine the test piece visually and by using the magnifier (SJ..4), and record any damage excluding any damage 2 mm from the edge of the tested area or in depressed areas caused by starting or stopping the machine. If required, use the grey scale (5J3) to determine the colour change of the tested area. 7.2.6 Replace the test piece and continue the abrasion to the next specified number of cycles. Repeat L2. 7.2.7 Repeat Z2J for any other number of cycles given in Z2A. 7.3 Reconditioning of abrasive wheels 7.3.1 Recondition rubber-based abrasive wheels (“CS” series) using the procedure in 232 to Z3. Recondition tungsten carbide abrasive wheels (“5” series) using the procedure in LI. Recondition silicon carbide wheels (“II” series) using the procedure in LIZ to Li9. 7.3.2 Prior to each test recondition rubber-based abrasive wheels. Tungsten and silicon wheels should be reconditioned as deemed necessary. 7.3.3 Repeat LL3 to LLS. 7.3.4 Brush the wheels with a soft brush (5..U) to remove any debris. 7.3.5 Use abrasive paper (5.10) for a maximum of 60 cycles (i.e. use for reconditioning three wheels and then replace). NOTE Optionally, the reconditioning of rubber-based abrasive wheels can be performed by using the procedure in Z3fi to 232. 7.3.6 Recondition the tungsten carbide wheels by brushing with a stiff bristle brush (1Z) to remove any loose particles. 7.3.7 Recondition silicon carbide abrasive wheels by using a diamond re-facing tool (515). 7.3.8 Traverse the tip of the diamond re-facing tool across the face of each wheel so that a double traverse (i.e. one forward and one backward movement) takes 25 s. Apply the minimum force necessary to the wheel by the diamond re-facing tool to produce an effective reconditioning. 7.3.9 Brush the wheels with a stiff bristle brush (5.12) or use compressed air (511) to remove any loose particles. 8 Test report The test report shall include the following: a) reference to this document, i.e. ISO 17076-1:2020; b) the number of test cycles;ISO 17076-1 pdf download.