English to French Tech/Engineering Metallurgy / Casting industry

Bonsoir,

Workers had to stand by the conveyor during the entire eight-hour shift and inspect each raw anode block. Operators inspected the surfaces of the blocks. The production of anodes blocks was 20 pieces an hour. To identify the blocks, workers had to squat down and use a piece of chalk to mark each block with a six-digit number. If the worker discovered a faulty block, he pressed a button to reject it.
Marking and painting of background layer - the blocks are marked by the automated spraying of a background colour using high-pressure nozzles.
Painting of an identification number - a printing device prints a block identification number on the white (background) strip, using two printing heads and two nozzles.

Merci!!! ;)