The way of manufacture
горячекатаных
strips on which after hot proskating rinks and coolings on
allocating рольганге
take up strips on
моталках ШСГП
in rolls which then cool in a warehouse of production before
the further processing is known. Thus the temperature
смотки
strips of various marks
сталей and thickness unequal also is caused by
requirements of reception of necessary mechanical properties and microstructures
of ready hire. Lack of a known way consists that for maintenance of a demanded
complex of mechanical properties of ready hire the temperature
смотки
strips in rolls often has low values (the order 550-600оС),
that decline of productivity of process leads to the raised loadings on
equipment ШСГП,
a trick out of operation it and as consequence.
The way of manufacture
горячекатаных
strips on which temperature
смотки
strips in rolls establish depending on mark of steel is known.
Lack of a known way consists that for reception of demanded
properties of ready metal it does not consider the subsequent cooling rolls at
which mechanical properties of hire can change.
The way of manufacture
горячекатаных
strips on which cooling of strips on their length is unequal
is known and is established depending on a carbon equivalent and temperature
смотки
strips.
Lack of a known way consists that because of unequal
conditions proskating rinks and
смотки
strips on its length productivity of process of reception of finished goods
decreases.
Most to relatives on technical essence and
достигаемому
to result to declared the known way of manufacture
горячекатаных
the strips, including hot to a proskating rink, cooling of
strips, смотку
them in rolls and cooling of rolls is.
Lack of a known way consists that it regulates temperature
смотки
on length of strips only within the limits of demanded by
GOST or THAT temperatures
смотки which as it was specified above, can be low for
maintenance of demanded quality of metal.
Strips,
прокатанные
on ШСГП,
are taken up in rolls at the certain temperature
смотки.
This temperature смотки
is defined by conditions of reception of demanded
mechanical properties and microstructures of hire in a ready condition. For
reception of a high level of mechanical properties of steel (according to
purpose of metal) смотки
strips after hot proskating rinks appoint temperature
low (the order 550-600оС).
Such low temperature
смотки strips leads to that at their proskating rink
in клетях ШСГП
loadings on the equipment considerably increase. The effort
proskating rinks makes the maximal size proceeding from conditions of the
maximal admissible contact pressure, acting are shaky rolling mills. Work
ШСГП in
such long mode leads to premature wear process
валков,
their breakage that reduces productivity of process.
After
смотки strips in rolls they cool down before the
further limit. For acceleration of process of cooling of rolls, decrease in the
areas of warehouse apply their accelerated cooling (water, a water-air mix,
etc.). It can lead to that mechanical properties of steel,
прокатанной
and winded at the lowered temperatures due to their increase
after the accelerated cooling, can leave for the top limit of the requirements
corresponding GOST or THOSE that leads to rejection of metal on corresponding
purpose and, hence, decline of productivity of process.
The offered way at its use in sheet-rolling manufacture will
allow to provide following technical and economic parameters: to raise service
life of the equipment; to increase productivity of process due to exception of
idle times by replacement of the equipment. |