If the size of the section steel is out of tolerance, you need to find out the corresponding reasons according to the characteristics of the problem in time to make corresponding control methods and achieve the purpose of treatment. Next, Jinan section steel manufacturer will explain to you.
The general term for the geometric dimensions of Jinan section steel that do not meet the requirements of the standard. If there is too much difference from the standard size, it will be deformed. There are many names of such defects, most of which are named by the location and out of tolerance. Such as out of roundness and out of tolerance length.
The pass design is unreasonable; Uneven wear of the hole pattern, improper matching of new and old holes; All parts of the rolling mill (including the guide device) are poorly installed, and the safety mortar is broken; Improper adjustment of rolling mill; Uneven billet temperature, uneven temperature of a single piece will result in partial non conformance, and the whole low temperature steel will result in non conformance of the whole length, which is too large.
Correctly install all parts of the rolling mill; Perfect pass design and strengthen adjustment operation of rolling mill; Pay attention to the wear of the pass. When replacing the finished hole, consider replacing the front hole of the finished product and other relevant passes according to the specific situation; Improve the billet heating quality to achieve uniform billet temperature; For some profiled materials, due to the change of section shape after straightening, a certain dimension may be affected. At this time, they can be straightened again to eliminate defects.
The feature, reason and control method of the dimension out of tolerance of the section steel are explained from the above contents. If you have any questions or needs, please come to us at any time http://www.jnhxtcg.com Contact for consultation!