Abstract: The characteristics, roll wear and thermal expansion of high speed steel rolls were studied and analyzed, and the rolling process was optimized by using full frame high speed steel(HSS) rolls in nonoriented silicon steel rolling. The results showed that: compared with ordinary rolls, HSS rolls can delay edge drop and control the section of nonoriented silicon steel, so as to improve the accuracy of the same plate difference in the subsequent process.

Key words: non-oriented silicon steel, high speed steel roll, edge drop, same board difference accuracy