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How to realize on-line detection of high temperature hot rolled steel plate?

Hot rolled steel plate is made of continuous casting slab or blooming slab as raw material, heated by walking beam furnace, descaling by high-pressure water, and then into roughing mill. After finishing rolling, the rough rolling material enters into finishing mill through cutting head and tail, and then enters into finishing mill for computer controlled rolling. After final rolling, it goes through laminar cooling (cooling rate controlled by computer) and coiler and becomes straight coil. The head and tail of straight hair curl are usually tongue shaped and fishtail shaped, and the accuracy of thickness and width is poor, and there are some defects such as wave shape, folded edge and tower shape. After the straight hair coil is processed by the finishing line of cutting head, tail, edge and straightening and leveling for many times, then the plate is cut or rewound, and the products such as hot-rolled steel plate, flat hot-rolled coil and longitudinal strip are formed. If the oxide scale is removed by pickling and oiling, the hot-rolled pickling coil is formed. The product has the tendency of partial substitution of cold-rolled sheet, the price is moderate, and it is loved by the majority of users.

In order to ensure the pass rate and yield of hot-rolled steel plate, it is necessary to carry out on-line detection of hot-rolled steel plate. The automatic detection equipment is precision equipment, and its internal circuit and other equipment can not cope with ultra-high temperature. Therefore, how to deal with this situation is a problem that should be considered for the width gauge of hot-rolled steel plate. This paper introduces the problems and solutions of width measurement of hot rolled steel plate.

For hot-rolled steel plate width online measurement, it is usually faced with high-temperature plate of more than 1000 degrees Celsius. Then the width gauge is installed in this area for detection. How to ensure that the width gauge can work normally under such close and high-temperature conditions, the following measures are mainly taken.
The shell of steel plate width gauge adopts all cast iron structure design, which is a structural part to support and protect the probe components, main panel components, circuit system and other parts of the caliper. The shell component is a closed structure, one side of the shell has the interface of water, electricity and fan pipes, and the tapping side is arranged with a detachable sealing ring which is convenient for wiping the lens protective glass. The height adjusting mechanism of the caliper is arranged at the lower part of the shell part, which can adjust the height of the measuring center. The shell parts of the steel plate width gauge can protect the internal circuit and circuit board. Meanwhile, the cooling and dust-proof device is installed inside to ensure the normal use of the steel plate width gauge in the environment of high temperature, dust and water mist.