BS ISO 6621-5:2013 pdf free
BS ISO 6621-5:2013 pdf free.Internal combustion engines – Piston rings
However, when chipping or other defects occur on outside gap corners, i.e. when the defect crosses the intersecting edges of the peripheral edge and the peripheral edge of the gap, a convention is required.The defect is taken as appropriate to the edge that contains the larger amount of the defect. For example,in Figure 3, most of the left side defect is on the peripheral edge and therefore the defect is appropriate to that edge. Hence, the K value lies along the peripheral edge and is denoted K3 while the F value, although it lies along the peripheral edge of the gap, is taken as the dimension measured normal to the peripheral
edge and is denoted F3.
In the case of the defect on the right side corner, most of the defect lies along the peripheral edge of the gap and the defect is therefore appropriate to this edge. The measurement K3 in this case is therefore measured along the peripheral edge of the gap and F3 is its dimension normal to the edge of the gap.
The limitations for chipping and similar defects on peripheral edges, peripheral edges of the gap, and opposite gap corners are given in 4.4.2.1 to 4.4.2.3.
Defects to be included in the assessment of the peripheral edges are all values of F2 and K2 as well as the F3 and K3 values of outside gap corner defects, if these are appropriate to the peripheral edges, e.g. the left hand defect illustrated in Figure 3.
Maximum sizes are given in Tables 5, 6, and 7 (peripheral edge column).Defects to be included in the assessment of the peripheral edges of the gap are all values of F1 and K1 as well as the F3 and K3 values of outside gap corner defects, if these are appropriate to the peripheral edges of the gap, e.g. the right hand defect ilustrated in Figure 3.BS ISO 6621-5 pdf download.
