Preparation of c1 sample
c2 fixture assembly and shot peening
As shown in Figure c1, fasten the sample in the fixture. The fixture body is tool steel, and the exposed surface is shot-peened. The shot-peening time and shot-peening conditions are the same as those of the electroplated workpiece.
c3 measure arc height
After spraying, remove the sample from the fixture and use a depth gauge to measure the curvature of the unpeened surface. The sample is supported by 4 balls with a diameter of 5mm to form a torch shape of 32mmx16mm. On the sample, the center needle of the gauge is aligned with the center of the sample. On the measuring length of 32mm, the arc height at the center of the sample is measured. The measurement is accurate to 25µm, and the measurement result should meet the requirements of the arc height value specified in Article 6.3.1, otherwise the shot peening conditions should be adjusted to obtain the required arc height value.
