The psychological analysis of the operators’` activities is confirmed by the
research results of short-term memory tension. Chief operators in China have to
memorize 26 press round programs (14 ones in Ukraine), the implementation of which
is carried out by the predetermined position of the rolls in each of the 14 spaces. And
it leads to the tension of short –term memory. On the other hand, a more difficult
calibration of the mill rolls in Ukraine (that contains 5 roll passes against 4 ones for a
Chinese roll mill) leads to the increase of the manipulator operators` contribution to
the realization of the press round programs, which put an ingot against one of the set
roll passes. As a result, the memory tension of the Ukrainian manipulator operators
dominates over the tension of this psychical function of the manipulator operators in
China.
The psychological factors research has determined a negative impact of the
following indicators on the characteristics of the operators` activities.
They are:
1) a supply rhythm of ingots from the reheating furnaces,
2) a quality of their heating and a scale crust presence,
3) a timely removal of ingots from the heating area, work rhythm and accident-
free operations.
The analysis of the psychophysiological parameters of operators` activities allows
to trace the dynamics of fatigue development as well as to establish a connection
between the reality and mental health, which accompanies their activities. The Table
5 shows the operators` heart rate changes depending on the performed functions.
Table5 Rolling Mill Operator`s Heart Rate (М±m)
Heart Rate
Manipulator Operators
Chief Operators
Ukraine
China
Ukraine
China
After an hour of work
75,7±11,7
85,1±10,9
85,1±10,9
75,9±15,1
After an hour of rest
79,5±10,4
82,3±11,5
82,3±11,5
73,3± 15,5
According to the table we can see that the operators` transition to active actions
on the control of the mill main drive leads to the increase in the heart rate on average
by 5 %. A level of the heart rate at the end of the pause doesn`t apparently reflect a rest
state but shows the measure of the preventive innervation which is expressed in the
strengthening of physiological processes and thus promotes their course in the labor
hours. The HR decrease of the Ukrainian manipulator operators (on average by 7 %)
speaks about the monotonous nature of their work. The latest data are consistent with
the stereotype indicators and logical complexity of algorithms, which are given in the
Table 1 and confirm the validity of conclusions.
The transition from one press round program to another does not change the
stereotype and rhythm of the operators` activities. This is due to the fact that the nature
of the operations remains invariable and only their sequence changes. The
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