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Method for calculating sheet belt surface defect density

A defect density and strip technology, applied in the field of counting strip surface defect density, can solve the problem of inability to count strip surface defect density and defect location, etc.

Active Publication Date: 2013-09-25
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for counting the defect density on the surface of the strip, which solves the technical problem that the prior art cannot count the defect density and defect position on the surface of the strip

Method used

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  • Method for calculating sheet belt surface defect density
  • Method for calculating sheet belt surface defect density
  • Method for calculating sheet belt surface defect density

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Embodiment Construction

[0019] see figure 1 and figure 2 , a method for counting the surface defect density of a strip provided in an embodiment of the present invention specifically includes the following steps:

[0020] Step 101: dividing the surface of the strip into multiple regions;

[0021] Divide the surface of the strip into the left edge area 4, the left middle area 5, the center position area 6, the right middle area 8, and the right edge area 7; the division method of these 5 areas is: the left edge area 4 The distance between the longitudinal dividing line and the left edge line 1 is 200mm, and the distance between the horizontal dividing line is 400mm; the distance between the longitudinal dividing line of the center position area 6 and the center line 2 is 200mm, and the distance between the transverse dividing line is 400mm; The distance between the longitudinal dividing line and the right edge line 3 is 200mm, and the distance between the transverse dividing line is 400mm.

[0022...

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Abstract

The invention discloses a method for calculating sheet belt surface defect density and belongs to the technical field of cold-rolled sheet belt production. The method includes that the sheet belt surface is divided into a plurality of areas, a measuring tool is used for delimiting a checking range in one area, the defect density is calculated in the checking range, and the defect density in unit area is obtained through calculation according to the checking range and the defect density. By means of the method, detecting and calculating of the surface defect positions and the density of cold-rolled sheets, annealed plates, galvanized sheets, tin plates, aluminum plates, painted plates and the like can be conducted, the size of the calculating area can be adjusted, the calculated area value can be read directly, and the method is convenient and simple.

Description

technical field [0001] The invention belongs to the technical field of cold-rolled strip production, in particular to a method for counting surface defect densities of strips. Background technique [0002] In the production process of the strip, a certain density of surface defects will inevitably occur. In order to control and reduce the defects, and at the same time, it is necessary to classify the surface quality status, a certain method must be used to count the density of the position where the defects occur, so as to take corresponding measures. Improvement measures and quality ratings. The current statistical method for strip surface defects only counts the defect density of the entire strip surface. When the size of the strip surface changes, it is impossible to perform comparative statistical analysis of defects on strips of different sizes, and at the same time, it is impossible to count the number of defects that appear on the strip. The relative position and occ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B38/00
Inventor 娄德诚孔凡庆贾松王树岗任君茹
Owner SHOUGANG CORPORATION
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