PRODUCTION AND EQUIPMENT
DEVELOPING SLIDE-GATE SYSTEMS
FOR CASTING SMALL INGOTS AND SHAPED CASTINGS
V. A. Kononov,
V. P. Vasilenko,
and A. A. Alpatov
Translated from Novye Ogneupory, No. 11, pp. 18 – 24, November, 2013.
Original article submitted February 7, 2013.
A technology for introducing slide gates at foundries is examined and equipment for casting metal into small
ingots and shaped castings is described.
Keywords: slide gate, casting metal into ingots, slide-gate slab, ladle nozzle, collecting nozzle, well block,
Slide gates were introduced to ferrous metallurgy over
the period 1974 – 1985. Russian-made slide gates and
refractories products were fabricated for the casting compo-
nents of steel-pouring ladles having capacities in the range
90 – 350 tons. In world practice, 100% of metal is cast with
the use of slide gates. Progress continues to be made in the
use of slide gates, with three generations of gates having
been developed over the last 20 years . The introduction
of slide gates for 10 – 50-ton ladles was delayed for a long
time in Russia due to a lack of the necessary types of gates
and refractories. The company “Shiber” was the first com
pany in Russia to develop a slide gate for small-capacity la
dles. This gate was introduced at the Moscow metallurgical
plant “Serp i Molot” in 2002. The RUS-40 slide gate was in
stalled on a ladle with a capacity of 10 tons . The metallur
gical plant recouped its investment in three months and was
able to cast 100% of its metal on a continuous caster. The
refractories lasted 3 – 4 times longer than the refractories
used previous to the slide-gate’s introduction. The model
RUS-40M slide gate was subsequently introduced on contin
uous casters at the “Staks” metallurgical plant (in Krasnyi
Sulin), the Oskol’sk Metallurgical Machinery Plant (for cast
ing metal into ingots), and other factories. The RUS-40M
slide gate was then installed on a 6-ton ladle at the OAO
“Rupolimet.” Thanks to the introduction of recent advances
in refractories production and slide-gate design, Rupolimet
was able to set a Russian record for refractory service life
(nine heats were cast through a single set of refractories).
Modern slide-gate systems have several advantages over
1. It is possible to improve the quality of castings, espe-
cially those destined for use in critical applications (castings
used by the Russian Railways, power plants, and so forth).
2. It is possible to introduce modern technologies and
upgrade a company’s line of products.
3. The amount of metal consumed is reduced several-
4. Maintenance is safe and convenient.
5. The refractories can be used repeatedly.
At present, 100% of foundries cast metal through stop
per-based systems which have a pin with sectional stoppers
and a plug that closes the opening in the pouring nozzle lo
cated in the lining of the bottom . This method of casting
has been in use for more than a 100 years and has become
obsolete for several reasons:
– the stopper assembly, composed of spool-shaped fire
clay refractories, is located in the molten metal. In addition
to contaminating the metal with silicate inclusions during
lengthy casting operations, this situation results in erosion of
the joints and can lead to accidents. An especially unreliable
element of the systems currently in use is the head part of the
plug, where internal cracks can develop and also cause acci
– since Russia lacks the highly plastic clays that are usu
ally used to make plugs, there has been a sharp deterioration
in the quality of this component. Many refractory plants have
stopped producing plugs because this endeavor is unprofit
Refractories and Industrial Ceramics Vol. 54, No. 6, March, 2014
1083-4877/14/05406-0443 © 2014 Springer Science+Business Media New York
”Shiber” Company, Moscow, Russia.