Method for performing thermal spray coating to undercut microstructure of mechanically roughened surface of cylinder bearing surface of crankcase, involves providing mechanical interlocking of sprayed layer through undercut microstructure

摘要

The method involve setting a spray jet angle of the burner (4) in response to the feed direction (v) such that incident angle between imaginary boundary line (L) between focused spray area (31) and non-focused spray area (32), and the main surface (1) with respect to the feed direction is spanned. The burner is guided over the surface in the feed direction. A sprayed layer (6) is formed on the main surface, and mechanical interlocking of the spray layer is provided through the undercut microstructure (2) filling spray particles.