Summary of defects in strip pickling and cold rolling

Summary of Quality Defects in each Process of cold rolling The production process of cold rolled strip steel mainly includes:

Hot rolling incoming materials, push-pull hydrochloric acid pickling, single reversible cold rolling, electrolytic degreasing cleaning, all hydrogen (or nitrogen hydrogen) annealing furnace, single leveling, rewinding longitudinal cutting (or transverse cutting), stretching bending straightening, packaging, storage and transportation, etc.

Today Xiaobian is now in cold rolling process pickling process, rolling process existing quality defects summary for you, in response to your request with pictures, follow-up will continue to collate and summarize other process defects.

A pickling process

In the process of pickling due to improper control of process parameters, careless operation or operation error, will affect the quality of pickling, produce a variety of defects, summarized defects are:

Pickling bubbles (hydrogen disease), over pickling, under pickling, rust, inclusions, scratches, indentation, etc., account for about 2% of cold rolled product defects.

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Summary of defects in strip pickling and cold rolling

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