| abstract |
The invention relates to the technical field of metal material detection, in particular to a method for evaluating a sorbite-type banded structure, which comprises: S1: heat treatment for steel grades with a sorbite content ≥ 70%; S2: metallographic sample preparation , including: cutting the heat-treated steel, making longitudinal metallographic samples, polishing, etching, and etching until the observation surface is gray-black; S3: band structure rating, where the band structure rating includes A weighted quantitative rating is performed based on the results of the microstructure rating and the hardness rating. The method of the invention can clearly and completely display the original band structure of the sorbite type wire rod product, so as to accurately evaluate the band structure. |