如果型钢出现尺寸超差问题的话，您需要及时根据问题的特征找出相应的原因，才能对应的做出控制方法，达到处理的目的。下面济南型钢厂家为您讲解。

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.

缺陷特征

Defect characteristics

济南型钢截面几何尺寸不符合标准规定要求的统称。当与标准尺寸相差过多时，则呈现畸形。这类缺陷名目繁多，大多以产生部位及超差程度加以命名。如不圆度超差、长度超差等。

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.

产生原因

Cause

孔型设计不合理；孔型磨损不均，新旧孔配合不当；轧机各部分（包括导卫装置）安装不良，安全臼破裂；轧机调整不当；钢坯温度不均，单根温度不均产生局部规格不合，整根低温钢产生全长规格不合，偏大。

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.

控制方法

Control method

正确进行轧机各部件的安装；完善孔型设计，加强轧机调整操作；注意孔型磨损情况，新换成品孔时，根据具体情况，考虑同时更换成品前孔等有关孔型；提高钢坯加热质量，达到钢坯温度均匀；有的异形材，由于矫直后截面形状变化，可能影响某一尺寸不合规定，此时可重新矫直消除缺陷。

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.

型钢尺寸超差特征、原因以及控制方法就从以上内容中解答了，您对此有什么问题或者需求可以随时来我们这里http://jyjfsj.com联系咨询！

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://jyjfsj.com Contact for consultation!