| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high magnetic flux density silicon steel sheet having a highly accumulated texture without requiring a complicated process at a low cost by subjecting a silicon steel slab having a specified compsn. to hot rolling and thereafter executing hot finish rolling at a specified draft and a specified rolling finishing temp. SOLUTION: A silicon steel slab of ferrite single phases contg., by weight, 0.1 to 3.5% Si, <=2.0% Al, <=2.0% Mn and one or two kinds of <=0.1% Sb and <=0.1% Sn is heated and is subjected to hot rough rolling. Successively, this hot rolled steel sheet is subjected to hot finish rolling at R>=50% draft (one pass) under temp. conditions of 750 to 1050 deg.C rolling finishing temp. TF also so as to satisfy 1050>=TF>=1300+100×Si-7R and at >=800m/min sheet passing rate. The silicon steel hot rolled sheet having a a structure in which the accumulated intensity of the 100}<100> orientation is highly accumulated to >=3 times that of the random structure and excellent in magnetic properties is inexpensively produced.
|
