| 摘要 |
<p>PURPOSE:To improve the yield by executing three dimensional rolling analytical calculation, temperature analytical calculation of temperature distribution in a section, considering strain in the section, rate of strain and temperature distri bution and predicting the final structure. CONSTITUTION:Procedures 1-6 are calculated successively and the distribution of structure of sections of a bar steel etc., is predicted based on them. In the procedure 1, strain, rate of strain and temperature distribution on the outlet side of rolling are calculated. In the procedure 2, the change of the temperature distribution in the section between passes is calculated. In the procedure 3, gammarecrystallization structure, unrecrystallization structure, distribution of residual strain are calculated. In the procedure 4, these calculation results are calculated continuously and repeatedly and calculations of gamma grain structure, residual strain, temperature distribution state are completed. In the procedure 5, change of temperature distribution is calculated and, in the procedure 6, the final structure distribution after cooling is completed is calculated. In this way, the structure of the final product of the bar steel, etc., in which ununiformity of the structure in a section is generated can be predicted.</p> |
