PRODUCTION AND EQUIPMENT
RESEARCH IN THE AREA OF PREPARING MATERIALS
BASED ON FUZED QUARTZ HCBS.
PART 3. STUDY AND IMPROVEMENT OF CENTRIFUGAL CASTING
Yu. E. Pivinskii
Translated from Novye Ogneupory, No. 3, pp. 79 – 90, March 2015.
Original article submitted October 24, 2014.
Chronology is considered for development of research and introductory work in the field of centrifugal cast
ing, implemented in the production of quartz steel-pouring refractories. Large scale application of centrifugal
casting is used for the first time in domestic and overseas practice for ceramic and refractory production. The
main requirements are considered for original casting systems and regimes making it possible to obtain high
density semifinished product. Prospects are shown in a number of examples of using the method in casting ob-
jects based on HCBS of other materials.
Keywords: centrifugal casting, fuzed quartz HCBS, ceramic concretes, volume concentration, excess factor,
quartz steel-pouring refractories, casting regime, peripheral velocity.
Up to the second half of the 1980s the sole method for
casting large objects of both quartz ceramic and quartz
refractories was slip casting in gypsum molds [1 – 4]. In the
case of using highly concentrated binder suspensions
(HCBS) based on quartz glass or fuzed quartz low values of
casting porosity are achieved, and this is very important tech
nologically, especially in preparing large objects with low
shrinkage during firing. At the same time, this method has
marked disadvantages, consisting of a slow casting rate and
use of rapidly wearing gypsum molds.
In this connection there is practical interest in a centrifu
gal casting method for the same fuzed quartz HCBS, which
is normally used for slip casting. In this method it is possible
to avoid slip casting disadvantages. Use of this method is
preferred  in casting bodies of rotation (steel-pouring noz
zles, heat protection pipes, shells of rollers for a tandem type
furnace) [2 – 7]. However, with certain improvement of the
process it is possible to cast objects both of flat shape, and
with different inserted (transverse) components.
AND MAIN INFORMATION ABOUT THE PROCESS
The centrifuging method, based on action of a centrifu
gal force field, is used extensively in chemical, food, metal
lurgical, and other branches of the national economy. In the
allied field of building materials, and in fact in the produc
tion of ferroconcrete pipes, centrifugal casting on an indus
trial scale was assimilated for the first time within the USSR
at the start of the 1930s .
It is known that applied to centrifugal casting of ceramic
materials the first publication relates to 1941 , and the au
thors for the first time used a version of combined technol
ogy including both normal slip casting in a gypsum mold,
and use of centrifugal casting in order to accelerate the pro
cess (centrifugal slip casting). Whereas subsequent develop
ment of the method was concentrated on casting objects hav
ing a shape of a body of rotation, in  it was studied as ap
plied to casting flat porcelain castings of different thickness.
Due to application of centrifugal force the duration of a cast
ing process was reduced by a factor of 8 – 10. Applied to
casting bodies of rotation (pipes, rings) a combined process
was suggested by Daniel in the USA in 1960 [10, p. 95].
Refractories and Industrial Ceramics Vol. 56, No. 2, July, 2015
1083-4877/15/05602-0126 © 2015 Springer Science+Business Media New York
Parts 1 and 2 of the article were published in Novye Ogneupory
No. 7 (2014) and No. 1 (2015).
OOO NVF Kerambet-Ogneupor, St. Petersburg, Russia.