Coating line of decarburizing annealing plants DAP-3A and DAP-3B.
In July-August, 2020 the specialists of CJSC «ASC» in partnership with specialists of CJSC «R&D enterprise «Mashprom» put into service the low-conductivity coat laying thickness flow measuring devices and metering devices (dosers) for filling the solution tank with relevant constituents at coating line of decarburizing annealing plants 3A and 3B in a cold-rolling shop of LLC «VIS-Stal», the city of Ekaterinburg.
«R&D enterprise «Mashprom» acted as a supplier of core process equipment, whereas CJSC «ASC» enterprise took on the job of a developer and supplier of electrial equipment and process control system. In the course of performance of works the magnox-based slurry preparation and application system was completely replaced. For the first time in the territory of Russian Federation the unit for controlling the magnox-based slurry thickness laying on electric steel strip was put into operation. X-ray thickness gages by «Thermo Fisher» company were used as feedback signals for laying thickness control system.
In terms of hardware the process control system was built on basis of «Siemens» automation components: controllers S7-400 and 1500, converters Sinamics, operator panels of Comfort series, software WinCC. Network architecture was implemented on basis of managed switches by «Hirschmann».
The commissioning activities resulted in building of the state-of-the-art and flexible (in terms of adjustment and diagnostics) process control system for slurry preparation and application. The system allows setting a slurry formulation, process parameters of coating application unit operation and also receiving information on coat laying thickness in real time.
When acceptance tests were successully completed the Customer took decision to spread the technologies (engineering solutions) applied in respect of 3A and 3B plants to other similar plants of the enterprise.