Circular disc shear blade space control method

Abstract

The invention relates to a method for controlling the distance between disc scissors. The method comprises the following steps: (1) dividing strip steel thickness grades and material strength grades; (2) collecting strip steel material characteristic data; (3) establishing soft steel, general steel and high 3 data statistics tables for strength steel; (4) according to the data statistics table, carry out statistical processing to the strip steel material characteristic data in step (2), and determine the characteristic value of the disc scissors blade spacing; (5) the next roll of strip steel enters the unit , prepare for production, determine the strip thickness setting value according to the strip thickness grade table; (6) the strip steel of the above-mentioned steps (5), according to the material strength grade table, determine to read the characteristic value of the disc scissors blade spacing; (7) ) Calculate a new set value of the disc scissors blade spacing according to the determined strip thickness set value and the disc scissors blade spacing feature value. Through the invention, the target control precision is high, the operation is simpler, the adaptability is wider, and the comprehensive yield of strip steel is improved.

Description

technical field [0001] The invention relates to a production process for cutting the edges of cold-rolled steel strips by using disc shears in iron and steel smelting, in particular to a method for controlling the distance between disc shear blades. Background technique [0002] Disc shears are important equipment to ensure that the edge of the strip is cut neatly, and the control of the distance between the disc shears is the key to ensure neat and burr-free cutting. [0003] figure 1 is a schematic diagram of the edge of strip sheared by disc shearing. In order to achieve neat and burr-free strip edges, disc shears are generally arranged on both sides of the strip steel 3, and each disc shear has two blades, that is, the upper blade 1 of the disc shear and the lower blade 2 of the disc shear. When cutting the edge of the cold-rolled strip, determine its eigenvalue according to the strength of the sheared strip, and calculate the set value of the blade spacing on the eige...

AI Technical Summary

Problems solved by technology

[0009] There are two key defects in the control method of the prior art: one is that the precision control is inaccurate: the main performance is that the industrial control computer sets the blade spacing irregularly and can be checked, which is an empirical value, and the operator often manually adjusts the blade spacing setting. Value

The second is that the expansion is not strong and the adaptability is poor: the main performance is that the blade spacing setting value is determined according to the strip thickness specification. When the strip material properties change, the blade spacing setting value corresponding to the same specification thickness is still used to control Disc shearing cuts the strip steel, and the result is that there are many burrs on the edge of the strip steel after shearing, and the yield of the strip steel is low

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