Summary of strip pickling and cold rolling process defects
Release time:
2022-06-23
Hot-rolled incoming materials, push-pull hydrochloric acid pickling, single-machine reversible cold rolling, electrolytic degreasing cleaning, all-hydrogen (or nitrogen-hydrogen) annealing furnace, single-machine leveling, re-coil slitting (or cross-cutting), stretch bending straightening, Packaging, storage and transportation, etc.
Summary of quality defects in cold-rolled processes The production process of cold-rolled strip steel mainly includes:
Hot-rolled incoming materials, push-pull hydrochloric acid pickling, single-machine reversible cold rolling, electrolytic degreasing cleaning, all-hydrogen (or nitrogen-hydrogen) annealing furnace, single-machine leveling, re-coil slitting (or cross-cutting), stretch bending straightening, Packaging, storage and transportation, etc.
Today, the small editor will now summarize the quality defects in the pickling process and rolling process in the cold rolling process to everyone. At everyone's request, pictures have been attached, and other process defects will continue to be sorted out and summarized later.
Pickling process
In the pickling process due to improper control of process parameters, operation is not serious or operational errors, will affect the quality of pickling, resulting in a variety of defects, summed up the defects of the varieties are:
Pickling bubbles (hydrogen disease), over pickling, under pickling, rust, inclusions, scratches, indentations, etc., account for about 2% of the defects of cold rolled products.
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