Quality assurance in thermal spraying by means of arithmetic revision or alienation of digital images

摘要

The invention relates to a method for thermal spraying for producing a spray layer on the surface of a substrate, at least one feature of the thermal spraying process influencing the quality of the spray layer being detected, controlled and / or monitored by means of a digital camera, and a system for quality assurance in the Generation of a spray layer on the surface of a substrate by means of a thermal spray process comprising a digital camera for recording, checking and / or monitoring at least one feature of the thermal spray process which influences the quality of the spray layer. DOLLAR A According to the invention, at least one area of the same intensity and / or at least one area within a certain intensity interval is assigned to one or more symmetrical geometric sheets in the images by means of computational revision and / or alienation. The symmetrical geometrical flat bodies can be recorded as data records on the basis of features that are characteristic of the respective geometric shape, and the quality diagnosis can be carried out using these data records. Ellipses are preferably used as the symmetrical geometric sheet. The invention ensures quality assurance by means of diagnostics which is based on relatively small amounts of data and is based on data which are meaningful and unambiguous for the spraying process or for the spraying apparatus.