Abstract
Applications of Monitoring of Electric Power Parameters to Performance Evaluation of a Model Vacuum-Assisted Moulding Installation Vacuum conditions in foundry installations are generated using electric-driven vacuum pumps. The purpose of the experiment is to evaluate the performance of a vacuum-assisted system for compaction of moulding sand basing on registered plots of selected electric power parameters of the power-supplying system of the pumps. Model testing done on an experimental vacuum system installation, power-supplied from a system incorporating the recorders of instantaneous current and voltage values. Following the numerical procedure, the experimental data are analysed to yield mathematical relationships between the variations of the generated vacuum pressure levels and variations of selected electric power parameters. Registered and computed values of selected parameters: instantaneous and RMS voltage and current values, active, reactive and apparent power levels and power coefficient allow for diagnosing the adequacy and reliability of the system operation. According to the authors, the applied monitoring of the power parameters of a vacuum-assisted installation may become an effective and easy practical method of evaluating the performance of such installations, used also in foundry plants.
Highlights
Monitoring of foundry operations executed by machines in foundry plants is a major aspect involved in supervision, control and regulation procedures and in identification of the working condition of machines and installations [1, 2, 3, 4]
The monitoring process involves three aspects: process preparation, organising of operation realisation; operation and maintenance of the installations and material handling units in foundry plants where they are used in the designed and defined manner evaluation of the system operation, involving the performance testing of single machines as well as systems of equipment, installations and groups of machines making up the process lines
It is assumed that research data should include the specification data and parameters quoted by manufacturers of foundry equipment and by specialised organisational units within the foundry plants
Summary
Monitoring of foundry operations executed by machines in foundry plants is a major aspect involved in supervision, control and regulation procedures and in identification of the working condition of machines and installations [1, 2, 3, 4]. The program establishes the computer-recorder connection, stores the measurement data in its memory, generates visualised plots of instantaneous current and voltage and power levels and executes the scheduled calculations of other electric power parameters using the digital data processing algorithms. These components are connected with a pipe installation and ball valves WKK4a, forming a spatial structure of three chambers having the respective volumes V1=4.75 dm, V2=9.42 dm and V3=14.17 dm (sum of V1 and V2) This configuration allows for extending the scope of the experimental program, so the influence of the chamber volume on the compaction performance can be investigated without expanding the test stand (Fig 5) [14,15]. One of the processes selected for testing is the vacuumassisted moulding process
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
