| 摘要 |
<p>PURPOSE:To adjust the roll interval of a bar mill with which the dimension of diameter of bar steel product is automatically controlled so as to always become the standard dimension of diameter. CONSTITUTION:After a sampling piece 11 of a bar steel product AA for sampling is cut, it is rolled with plural rolling mills, the sample piece 11 is again cut into a prescribed standard length and sizing is executed. After that, the sample piece 11 is weighed and the dimension of diameter of the bar steel product AA for sampling is deduced from that weight. The interval between the rolling parts of rolls of which each rolling mill is constituted is adjusted in the state that the dimension of diameter is out of the prescribed standard diameter, the dimension of diameter of manufactured bar steel products A is automatically controlled so as to always become the standard dimension of diameter and the bar steel product AA for sampling from which the above- mentioned sample piece 11 is cut is delivered by lining up the end parts like the other bar steel products A.</p> |
