Residual stresses, distortion and surface roughness produced by grinding thin wall ductile iron plates

摘要: Abstract This work deals with grinding effects on thin wall ductile iron plates. Residual stresses, shape distortion and surface roughness were measured plates of different nodule count, ferritised afterwards dry ground under several conditions. In all cases, tensile residual stresses are maximum at the surface, their profile decreases depth until becoming compressive. No phase transformations can be observed depths up to 30 μm below although plastic deformation is visible through nodules grains enlargement. Distortion increases when cut count increase workspeed decreases. The mean zone also increases. Surface improves slightly as tendency more noticeable arithmetic (Ra) values obtained always 0.8 μm.