Multichannel system of automation of work of a unit of vacuum-arc dusting

Abstract

The developed automated system for vacuum-arc dusting is based on the modern element base and allows the long-term continuous measurement of the arc current, of the residual pressure in the vacuum chamber, of the temperature of parts, of voltage, of the simulation of dusting, as well as determination of the optimal values of controlled parameters and accumulation and storage of measurement results. During the operation of a vacuum-arc dusting unit, the process parameters and their impact on the quality of coating were studied. The measurement of pressure in the vacuum system of the unit was performed using three vacuum gauges 13ВТЗ-003 and magnetic-discharge locking vacuum gauge ВМБ-14. The countdown of pressure was displayed on a computer monitor and recorded by the universal registration unit with the ADC. Temperature of the surface of details was controlled by a pyrometer BSA with secondary measurement transmitter. The application of the digital industrial interface RS-485 for connection to a control computer and for data transmission provides increased noise immunity of the entire system. The system architecture is based on standard OPC, which allows the application of measuring modules of different manufacturers. The automated system allows the measurement of parameters of the vacuum-arc dusting, as well as the calculation of the parameters of the process and generation of the appropriate control influences by modes of dusting.