B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
341/65
B24D 99/00 (2010.01) G01N 27/90 (2006.01)
Patent
CA 1073543
ABSTRACT Method and apparatus for producing metal blanks, in particular steel slabs, which at least in a predetermined surface area have substantial- ly no defects such as cracks, seams, bubbles, scabs, or the like, at least the surface portion to be made free of defects being systematically and sub- stantially completely scanned by means of at least one inspecting device which detects such defects at and closely beneath the surface as regards location and depth and a working means being controlled by means of the re- corded defects, which by scarfing, grinding, milling, planing and/or another cutting machine and/or local material melt deposition and/or material re- placement or the like removes the defects detected, the defects being recorded with their depth for surface sub-areas whose width transversely of the work- ing means is substantially equal or less than the smallest working width of the working means and the working depth of the working means being controlled in accordance with the maximum defect depth recorded for the particular sur- face sub-area to be worked, wherein defects which occur within a surface sub-areas in a defect accumulation exceeding a predetermined defect minimum number and/or defects having a longitudinal extent whose direction deviates appreciably from the rolling direction are especially marked and/or taken into account with a weight changed with respect to a single defect in the determination of the maximum defect depth.
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