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The groove wear of profile steel has its particularity. The side wall and arc wear of finishing pass are more obvious than other parts, which fully reflects the non-uniformity of groove wear.

Through the analysis of the actual groove wear data, the factors such as the selection of roll material, pass design parameters, the relative sliding of rolling piece and roll, the machining precision of roll, and the formulation of roll changing system are all the reasons for the uneven roll wear.

By analyzing the causes and taking corresponding countermeasures, such as laser surface strengthening technology, optimization of pass parameters, etc., it can effectively reduce roll wear speed and non-uniformity, stabilize production and improve product quality.