How to maintain the mill pressure sensor

 Whatever the instrument used in a long time, the life expectancy would decline . Mill pressure sensor is no exception. Pressure sensors are very important element , which is detected when the mill rolling force , it is critical components. It is mounted on the roll , and each has one side . On the steel sheet surface by measuring the total pressure force, the detected differential pressure can truly reflect the fact on the steel sheet surface uniformity of the pressure . Because it is mounted under the roll , and the environment in which it has always been very strong vibration , humidity is very high and the temperature is high. Therefore, to maintain it becomes a very difficult thing , but expensive. Therefore, how well and how to maintain Coolant Temp Sensor is especially important parts . Pressure sensor installation has the following technical requirements: the sensor should be installed in the roll head below the base , the above is of ninety millimeters thick are plate , and on top of it is on a 60 mm thick plate , the following part is the next fifteen millimeters thick pad . In fact , over the sensor plate with the following , both the base plate and the distance between the circumference of 1.5 mm. And there is a convex bottom base , which is embedded into the mill base inside . Both upper and lower pads, and the quality of some of the requirements of the platen . Heat treatment Hardness : HB320-360. Surface roughness of 1.6um; flatness 0.05mm; parallel is 0.05 . In the Engine Coolant Sensor maintenance work , through integration of data and found that the sensor problems generally are the following : 1 , base, and a lot of oil around the plate four weeks , thus causing the insulation effect is not ideal. 2 , the gap between the base plate and the other end of the small end large, this is because the sensor base of the following mill base circle , which has been subject to the impact of the role of the rolling force , no longer meet the installation requirements , when the level of the . 3 , after the sensor is removed , the same position that it has the appearance of a very severe wear , some have even been corrosion , so the force is no longer uniform . 4 , the west under the indenter roll the extent of damage severe than the east , the number was significantly higher , analyze the results that may be mill drive west end , so by rolling impact will be higher than the big east . Respond to some of the problems above we generally there are several solutions. 1, from the rolling mill stand removed at  Motor sensor  base , and then measure the surface and the lower surface of the base circle , the horizontal and flatness must be measured. 2 , the lower plate below the increase in skin thickness of 0.6mm copper because of its good ductility , a level sensor is installed can have a certain compensation. The pressure test data show that the new added to the copper plate at certain positions of the indentation has one millimeter thick , and some of them have almost been pressed to wear , this description is not enough to force uniform . 3 , remove the sensor after the sensor , both the upper and lower plate and pad roughness , flatness , parallelism and geometry measurements , generally can be found in both the upper and lower platen plate precision installation requirements have been much lower than the . Only learn how to maintain mill pressure sensors, in order to make better use of rolling pressure sensor , the only way to make life more permanent , better service.