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What is the deviation of the wave shape of the packaging steel strip with the naked eye?
by：Hongmei
2021-03-15
What is the deviation of the wave shape of the packaging steel strip with the naked eye?
The most intuitive reflection of the wave shape is the wave height, which seems to be the same as the waves in the river or sea. However, the wave height alone cannot explain the problem. The wave height and wavelength must be combined to accurately reflect the severity of the deformation of the steel strip. The intuitive impression of wavelength is somewhat contrary to the actual situation, that is, waves with the same wave height and large wavelengths will vibrate or move greatly when running on the production line. In addition, due to the reflection of light on the surface of the galvanized sheet, it looks like waves The shape is very serious, and it is often regarded as a big wave shape. In fact, the larger the wave height and the wavelength, the smaller the difference between the long and short fibers in the cross section of the steel strip, and the smaller the elongation required during straightening.
In the case of poor cold rolling quality, a plate shape called 'fungi edge' often appears, which is due to the deformation of the roll at the edge of the steel strip due to the deformation of the steel strip at the edge of the steel strip. It is caused by the roll shape between the zone and the non-deformed zone that is not deformed by the rebound force of the steel strip. It is a more serious edge thinning. Because the wavelength is small, it seems to be small and is not valued by people. However, in fact, the length difference between the outermost part and the middle part of the edge is very large. Need a larger stretch-straightening elongation to eliminate.
The most intuitive reflection of the wave shape is the wave height, which seems to be the same as the waves in the river or sea. However, the wave height alone cannot explain the problem. The wave height and wavelength must be combined to accurately reflect the severity of the deformation of the steel strip. The intuitive impression of wavelength is somewhat contrary to the actual situation, that is, waves with the same wave height and large wavelengths will vibrate or move greatly when running on the production line. In addition, due to the reflection of light on the surface of the galvanized sheet, it looks like waves The shape is very serious, and it is often regarded as a big wave shape. In fact, the larger the wave height and the wavelength, the smaller the difference between the long and short fibers in the cross section of the steel strip, and the smaller the elongation required during straightening.
In the case of poor cold rolling quality, a plate shape called 'fungi edge' often appears, which is due to the deformation of the roll at the edge of the steel strip due to the deformation of the steel strip at the edge of the steel strip. It is caused by the roll shape between the zone and the non-deformed zone that is not deformed by the rebound force of the steel strip. It is a more serious edge thinning. Because the wavelength is small, it seems to be small and is not valued by people. However, in fact, the length difference between the outermost part and the middle part of the edge is very large. Need a larger stretch-straightening elongation to eliminate.
