CASE STUDY Steel : Optimization of concentration sensor on cold rolling mill emulsions for reliable measurements QH FLUIDCONTROL™ SCS The Challenge
The Benefits
A major European steel cold rolling customer had unstable concentration measurements while using online sensors of the cold rolling emulsion system.
By implementing QH FLUIDCONTROL™ SCS:
There were two concentration sensors for cold rolling emulsions; however, they were not performing effectively and were generating unstable and unreliable readings. In addition, they were drifting immediately after calibration. Within a lab environment, these sensors worked well, but in the field, they both failed to provide accurate readouts and automatic dosing of the rolling oil. Issues arising from this situation were:
to get concentration measurements with the • Failure current sensors
attempts by the customer and probe sup• Unsuccessful plier to get the sensors to operate correctly
• Inability to perform automatic dosing of rolling oil
The steel company needed a solution to keep the emulsion concentrations stable in order to create more consistent rolling conditions.
sensor readings are very precise and • Concentration reliable with data available for the operators in the control room.
sensor output is now linked to the automatic • The dosing of the rolling oil into the emulsion resulting in a steady emulsion concentration and more stable working parameters for the cold mill
low investment for the improvement was realized • Asince Quaker Houghton leveraged the use of the existing sensors
difference between lab results and on-line • The concentration measurement is better than 0.1% difference
manual cleaning is necessary on the sensor • No because the integrated cleaning function cleans the sensor frequently
The Solution Quaker Houghton experts investigated the existing concentration sensors. Although high quality sensors were used, an analysis showed that the data management and operation of these sensors were not optimum. In evaluating the situation, Quaker Houghton decided to develop QH FLUIDCONTROL™ SCS, a new innovative bypass system, that solved the incorrect readings from the probes. It was installed on the cold rolling mill with one sensor integrated within the device. Thanks to the QH FLUIDCONTROL™ SCS, the sensor accuracy has improved to +/- 0.1% compared to their lab results. Due to the positive outcome, another unit was ordered and installed on the second sensor. Quaker Houghton was able to transform these erratic sensors into reliable measurements for automatic dosing of the QUAKEROL® rolling oils.
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quakerhoughton.com | info@quakerhoughton.com
The Product
QH FLUIDCONTROL™ SCS
QH FLUIDCONTROL™ SCS is designed to enhance sensor operation to work perfectly on the emulsion for one system. QH FLUIDCONTROL™ SCS – MODEL 3 provides concentration readings for three emulsion systems with a single sensor. During a project involving QH FLUIDCONTROL™ SCS, Quaker Houghton performs a calibration of the sensor monitoring the QUAKEROL rolling oil to provide the highest possible accuracy,
©2020 Quaker Houghton. All rights reserved.
quakerhoughton.com | info@quakerhoughton.com
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