Patent ID: 6886435

Claim:
A turning and quality assurance process for thermally sprayed, rotationally symmetrical grazing and running-in linings of turbomachines, comprising: removing a top coating, which is harder in relation to a nominal lining consistency, by turning, finish-turning to size the lining still having excess material, predetermining turning parameters during the finish turning, said turning parameters including geometry of a cutting tool cutting tip, rotational cutting speed of the cutting tool, axial cutting tool feed and radial recessing depth/infeed of the cutting tool, maintaining a plurality of said predetermined parameters constant during the finish-turning, quantitatively detecting a characteristic proportional to a cutting force during the final turning, recording graphically or storing said characteristic in a data system, comparing the force characteristic with predetermined limit values, and depending on a result of the comparison, approving the lining for use, or removing again and producing again with altered spraying parameters.