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Short stress mill


  The stress loop of the working machine of the short stress rolling mill is a short profile rolling mill. The stress loop of the working stand refers to the neutral line of the elastic deformation section of the stressed parts in the rolling mill after the rolling force is applied to the rolling mill. The length of the stress loop is the sum of the length of the stressed parts in the rolling mill. The elastic deformation of each stressed part in the rolling stand is directly proportional to its sectional area and inversely proportional to its length. The shorter the stress loop in the stand is, the smaller the elastic deformation is. The greater the rigidity of the rolling mill (see the rigidity coefficient of the rolling mill), the higher the precision of the rolled product.

  There are two ways to shorten the stress loop of rolling mill:
  One is to change the form of bearing structure of rolling mill, that is, to reduce the number of bearing parts in the stand of rolling mill. For example, if there is no arch (stand) rolling mill, the stress loop is shortened by shortening the length of bearing parts;
  The second is to change the transmission path of the force, such as making the rolling force not directly act on the upper part of the arch window, but on the column near the rolling mill, so as to shorten the stress loop. The comparison of general rolling mill and short stress line is shown in the figure.
  The short stress line mill is mainly used for the transformation of the transverse mill, the development of the double short stress line mill (see the double short stress line finishing mill) and the research of the vertical short stress line mill, which are built on the continuous rolling production line with the alternate arrangement of the Pingyi interchange.
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