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Introduction to the use of thickness gauges for packaging steel strips
by：Hongmei
2021-03-15
Introduction to the use of thickness gauges for packaging steel strips
There are two types of thickness gauges: contact type and non-contact type. The contact type thickness gauge has a long measurement cycle, low measurement accuracy, and wide measurement range. It is used for low-speed, cold-rolling conditions for rolling thickness measurement. Non-contact thickness gauges are widely used due to their fast response speed, high measurement accuracy, continuous detection, easy computer networking, and automatic thickness control.
Non-contact thickness gauges include X-ray thickness gauges, γ-ray thickness gauges (mainly americium and cesium), ultrasonic, infrared and laser thickness gauges. The first two are radiation thickness gauges It is made according to the principle that when certain energy rays pass through the steel plate, the attenuation intensity of the ray has a certain relationship with the thickness of the steel plate. After the rays are emitted from the ray source, they are generally absorbed by the steel plate from bottom to top, and the rest is detected The device accepts. When there is no steel plate in the space to be measured, use a reference plate of known thickness for calibration.
Modern thickness gauge is a set of computer data detection and processing system, with computing functions (such as calculating and outputting the measured thickness deviation according to the input target thickness and measured thickness), self-correction, self-diagnosis and maintenance and other intelligent functions.
γ-rays have stronger penetrating power than X-rays, but it is difficult to achieve higher radiation doses than X-rays. Large radiation dose can achieve low voice and high response speed. The X-ray thickness gauge is suitable for the thickness measurement of high-speed production lines such as thin and medium plates. It can be installed at the exit of the finishing mill of the hot-rolled strip mill, the exit of the cold-rolled strip mill, and between the stands. The americium gamma-ray thickness gauge is mainly used for the thickness measurement of the low-to-medium-speed production line of thin plates. Because the gamma-ray energy radiated by americium isotope is lower than the gamma-ray energy radiated by cesium isotope, it is easy to shield and can be used as a small thickness gauge for cold rolling . The cesium gamma ray thickness gauge can be installed at the exit of the hot strip roughing mill, the exit of the thick plate hot finishing mill and its finishing line.
There are two types of thickness gauges: contact type and non-contact type. The contact type thickness gauge has a long measurement cycle, low measurement accuracy, and wide measurement range. It is used for low-speed, cold-rolling conditions for rolling thickness measurement. Non-contact thickness gauges are widely used due to their fast response speed, high measurement accuracy, continuous detection, easy computer networking, and automatic thickness control.
Non-contact thickness gauges include X-ray thickness gauges, γ-ray thickness gauges (mainly americium and cesium), ultrasonic, infrared and laser thickness gauges. The first two are radiation thickness gauges It is made according to the principle that when certain energy rays pass through the steel plate, the attenuation intensity of the ray has a certain relationship with the thickness of the steel plate. After the rays are emitted from the ray source, they are generally absorbed by the steel plate from bottom to top, and the rest is detected The device accepts. When there is no steel plate in the space to be measured, use a reference plate of known thickness for calibration.
Modern thickness gauge is a set of computer data detection and processing system, with computing functions (such as calculating and outputting the measured thickness deviation according to the input target thickness and measured thickness), self-correction, self-diagnosis and maintenance and other intelligent functions.
γ-rays have stronger penetrating power than X-rays, but it is difficult to achieve higher radiation doses than X-rays. Large radiation dose can achieve low voice and high response speed. The X-ray thickness gauge is suitable for the thickness measurement of high-speed production lines such as thin and medium plates. It can be installed at the exit of the finishing mill of the hot-rolled strip mill, the exit of the cold-rolled strip mill, and between the stands. The americium gamma-ray thickness gauge is mainly used for the thickness measurement of the low-to-medium-speed production line of thin plates. Because the gamma-ray energy radiated by americium isotope is lower than the gamma-ray energy radiated by cesium isotope, it is easy to shield and can be used as a small thickness gauge for cold rolling . The cesium gamma ray thickness gauge can be installed at the exit of the hot strip roughing mill, the exit of the thick plate hot finishing mill and its finishing line.
