Detecting method for insulation-to-ground of insulation rollers
A detection method and ground insulation technology, applied in the field of hot-rolled strip steel, can solve the problem of not accurately detecting the ground insulation of insulating rollers, and achieve the effect of improving the ground insulation
Active Publication Date: 2020-05-29
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
However, there is currently no method to accurately detect the insulation of the insulating roller to the ground
Method used
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[0028] Below, the structure and working principle of the present invention will be further described in conjunction with the accompanying drawings.
[0029] see figure 1 and combine figure 2 , there is a section of insulating roller set on the roller table. The insulating roller set includes a plurality of insulating rollers 2. Since the strip steel 5 passes through the insulating rollers 2, arc burns are likely to occur. 2 to test the ground insulation. The detection method of a plurality of insulating rollers 2 is the same, and the insulating roller 2 located on the far right is taken as the detection object to specifically illustrate the detection method of the insulation roller to the ground insulation of the present invention, which includes:
[0030] Step 1, judge whether the head of strip steel 5 arrives on the insulation roller 2, if the head of strip steel 5 arrives on the insulation roller 2, then begin to detect the ground insulation resistance of insulation roll...
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The invention discloses a detecting method for insulation-to-ground of insulation rollers. A roller bed is provided with an insulation roller group. The insulation roller group comprises a plurality of insulation rollers. The method includes the steps of: firstly, judging whether a head of strip steel reaches the insulation rollers or not, and if yes, starting to detect insulation-to-ground resistance values of the insulation rollers; secondly, dividing the strip steel into a plurality of detecting sections in the length direction of the strip steel, and collecting the insulation-to-ground resistance values of the insulation rollers multiple times in the process when each detecting section passes through the insulation rollers; and thirdly, calculating the actual mean and the fluctuating value of the insulation-to-ground resistance values measured multiple times in the process when each detecting section passes through the insulation rollers, and judging whether the actual mean is higher than a first set value or not and whether the fluctuating value is less than a second set value or not. By means of the detecting method for the insulation-to-ground of the insulation rollers, theinsulation-to-ground of the insulation rollers can be detected in real time.
Description
technical field [0001] The invention relates to the field of hot-rolled steel strips, in particular to a method for detecting the ground insulation of insulating rolls. Background technique [0002] In the process of hot-rolled strip steel, it is necessary to use edge heaters to heat the edge of the strip steel, so as to reduce the temperature difference between the front and back of the strip steel and improve the surface quality of the strip steel. According to the basic principle of electromagnetic induction heating, the idler rollers used to convey steel strips near the edge heater must use insulating rollers. The insulation resistance of the insulating rollers to the ground cannot be lower than a certain value. Once the insulation requirements cannot be met, the It will lead to the generation of electric arc during the heating process, which will cause arc burn on the surface of the strip steel, thus affecting the surface quality of the strip steel. However, in the act...
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Login to View More IPC IPC(8): B21B38/00
CPCB21B38/00
Inventor 荣鸿伟郁华军夏宏斌潘宝恩范大弟
Owner BAOSHAN IRON & STEEL CO LTD