Automatic Hot Rolling Line With High Working Efficiency
The hot rolling machine is actually a part of the continuous
casting direct rolling equipment. The main function of the
continuous casting machine is to solidify the liquid flowing
through the equipment for drawing and crystallization into billet.
The rolling machine used at this time is the hot rolling machine. .
The hot rolling mill has a wide range of functions. Its model
number is named according to the diameter of the roll. The general
model of hot rolling machine as follow: 230*250*280*320, etc.
Please call or request for more information about the rolling
process of opposite sex or conventional material.
Small scale hot rolling machine is a 200×3 type rolling machine
with a roll diameter of 200 mm. The rolling machine is mainly used
for rolling small wires and adopts a three-roll working stand. The
main equipment of the rolling machine is composed of a host column,
which consists of three basic parts: the prime mover, the
transmission device and the actuator. The configuration adopted is
electric motor--reducer--gear base--rolling machine. Since the
steering and rotational speed of the rolls are irreversible, the
prime mover adopts a high-speed AC main motor with a lower cost.
Considering that the rolling machine load is very uneven, in order
to balance the motor load and reduce the capacity of the motor, a
flywheel is added between the reducer and the motor. Gear base:
Purpose is to transmit torque to the work roll, adopts three
cylindrical herringbone gears of equal diameter to be arranged in a
row in the vertical plane and housed in a closed box. Coupling: The
safety coupling is used between the reducer and the gear base, and
the plum coupling is used for the main coupling. Scope of
application: Mainly used for the production of rolling rebar, angle
steel, square steel, flat steel, channel steel, can also be used
for other types of profiles, aluminum, copper, sheet, steel strip,
and other waste steel restructuring.
The general conventional small hot rolling is divided into: 3-5
groups * 5-7 groups * 7-9 groups * 9-13 groups * 13-17 groups,
etc., the number of groups here represents the number of mechanical
arches (ie K ). Rolling machine composition and structural
characteristics: This machine is composed of main motor, reducer,
herringbone gear seat, universal joint, working stand, electric
control cabinet, etc. The roller system adopts special rolling mill
bearing, and the roller material is 9Cr2Mo.
The qualified billets are lifted to the loading platform by the
bridge crane, and then the billets are pushed into the heating
furnace by the pusher. When the billet is heated to 1150 °C, the
hot billets are pushed out of the heating furnace by the tapping
machine, and through discharging roller and front work rollers of
the Φ400 rough rolling machine, they are sent to the Φ300×4 medium
rolling machine. The roughing rolling machine is shuttled 7-9
times, and the rolled parts are fixedly sheared to remove irregular
portions or low temperature portions of the head, and then they are
sent to Φ300×4/Φ280×8 rolling machine. The Φ280×8 is rolled into
Φ6.5-8mm wire, and finally collected, packed, weighed and stored in
The difference between full continuous rolling and semi-continuous
In the steel rolling production process, there are generally two
processes, one of which uses full continuous rolling and the other
uses semi-continuous rolling. Full continuous rolling is generally
suitable for production lines with large output, and
semi-continuous rolling is suitable for production lines with a
slightly smaller output. At present, the rolling method adopted in
some small workshops is a kind of special semi-continuous rolling
method, which is to carry out continuous rolling between the two
front and rear racks, and to perform the idle rolling between the
two sets of rolling machines. When the finish rolling process is
continuous rolling, the rolling speed is not limited, and the
output is high, but the rolling machine is complicated to adjust,
the product variety is difficult to change, the production is not
flexible, so it’s only suitable for the mass production for few
varieties of simple section profiles.
When the finishing rolling process is a cross-roll rolling
machine’s shuttle rolling or a loop rolling, it is convenient to
change the rolling product type, but the rolling speed and the
output is low, which is suitable for rolling of special section
profiles and small batch production of multiple varieties. This
equipment has the advantages of compact layout, convenient
adjustment, multi-line rolling, and high output.
In addition to full continuous and semi-continuous rolling, the
rolling machine can also produce by slitting rolling process. When
the conditions are the same, the process can reduce the heating
temperature of the billet by about 40 ° C, reduce the fuel by 20%,
and reduce the power consumption by 15%, so the total production
costs can be reduced by 10-15%. This proves that slitting rolling
process is an easy and effective measure to reduce production
Compared with ordinary rolling, the precision of products through
slitting rolling can be increased by 5%-6%. The reason is that the
two lines are bitten at the same time after slitting, the
cross-section changes little, the head-to-tail temperature
difference is small and the load is uniform. In addition, the
slitting rolling is performed only in the last three racks, and the
rest are micro tension and tensionless rolling.
When using the same size of billets to produce the same size
products, it is only necessary to roll a 1/2 section, thus reducing
the number of rolling passes. At the same time, double-line or
multi-line rolling can be realized, which greatly increases the
output of the rolling machine, and this is especially important
when producing small-sized products.
Finished Product Size
Purchase Service Guide:
Before purchasing, our company will arrange engineers and
technicians to the user site to plan the site and design the best
process and solution for the customer for free. After purchasing,
our company will assign specialized after-sales service personnel
to the site to guide the customer to install and debug, assist the
customer in planning and managing the equipment for free until the
customer is satisfied. Adhering to the customer-oriented service
purpose, our company gradually formed a complete service system of
design, installation, debugging, maintenance, etc. With a
technology-riched engineering team and a good and efficient
after-sales service team, we are ready to provide users with a full
range of technical services. And we are affirmed by the peer
industry and users with fast response time, high work efficiency
and timely problem solving .
1. Products are strictly produced according to the requirements and
standards of ISO9001 quality management system, and each product is
strictly inspected before leaving the factory.
2. Our company implements the after-sales service concept of “you
use equipment, I maintain”, and responds fast and timely. After
receiving the feedback of quality information, we will give
satisfactory answers to the users within 24 hours. For the domestic
users, we will arrive at the use site within three days, and for
the foreign users, we will reply through telephone, fax or mail
within 10 days.
3. After the equipment is checked and accepted, the supplier leaves
a technician to monitor the operation status of the equipment, and
provides technical training for the relevant technical personnel of
the demand side for 1-3 days.
4. The equipment has a warranty period of one year from the date of
acceptance. During the warranty period, the supplier will repair it
free of charge and the equipment will be paid for maintenance for
5. After the expiration of the warranty period, only the necessary
maintenance, labor and materials costs will be charged.
6. The self-made parts purchased by the demanding side, the
supplier promises that the price will not increase within 3 years.