Quality control in metal heat treatment
The system has been designed to ensure the quality control for
heat treatments in a plant division equipped with heterogeneous
furnaces (multi-chamber furnaces, pit furnaces, tempering and
hardening furnaces), replacing traditional paper recorders and
creating production reports.
Furnaces are equipped with their own instrumentation (PLCs,
Eroelectronic/Gefran controllers, recorders) and can perform
different kind of heat treatments (hardening, tempering, annealing,
The system gathers heat treatments measures of all division from a
parallel data acquisition network without entering any interference
to the existing control instrumentation; collected data
(temperatures, carbon percentages) are continuously referred to
theoretical curves values set in every production recipe to verify
the quality of the process.
At the end of every production process, reports are generated
containing load identification data, process variable curves and
All historical data and reports are exported in a Microsoft Office
compliant format and extended to the quality control division.
Alarms coming from process and machines are recorded and broadcast
to maintenance staff and, in case of not guarded plant, to
Two PClog client stations and a PClog server TCP/IP provide
system HMI, ensure data integrity and maintain plant work continuity.
This system is well suited in those cases where it is important to
have global vision of several process executed by several machines
without local HMI.