SU349238A1 - - Google Patents

Info

Publication number
SU349238A1
SU349238A1 SU1438559A SU1438559A SU349238A1 SU 349238 A1 SU349238 A1 SU 349238A1 SU 1438559 A SU1438559 A SU 1438559A SU 1438559 A SU1438559 A SU 1438559A SU 349238 A1 SU349238 A1 SU 349238A1
Authority
SU
USSR - Soviet Union
Prior art keywords
length
ingot
radius
curvilinear
arc
Prior art date
Application number
SU1438559A
Other languages
Russian (ru)
Inventor
С. Е. Карликский В. М. Нисковских Е. Ю. Гельфенбейн
Г. Л. Химич
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1438559A priority Critical patent/SU349238A1/ru
Application granted granted Critical
Publication of SU349238A1 publication Critical patent/SU349238A1/ru

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ
    • B22D11/128Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1282Vertical casting and curving the cast stock to the horizontal

Description

This invention relates to the field of metallurgy, in particular to the continuous casting of metals.

Installations for the continuous casting of metals are known, which contain a radial crystallizer and directing devices for the ingot in the secondary cooling zone, which includes successive arc sections with a radius equal to the radius of curvature of the crystallizer, curvilinear and rectilinear sections.

The disadvantage of such plants is “low quality ingot when casting at high speed.

In order to ensure high casting speeds and high-quality ingots, the arc section with the mold in the proposed installation is 0.2-0.4 in length, the total length of the secondary cooling zone, and the guides on the curvilinear section are set along a curve whose radius of curvature is directly proportional to the ratio the thickness of the sllt liquid phase at the maximal casting speed to the difference of the length of the curvilinear section and the current length of the arc of the curve, and the length of the curvilinear section is 1.3-1.8 times the radius of curvature of the cris allizatora on the angle between vertical) O n straight connecting the top portion kriBOLnneynogo with center of curvature of the mold.

The drawing shows the scheme of the proposed metal casting installation.

The installation contains a radial mold having a radius of curvature, which is intended for the primary cooling of the molten metal 2 and the formation of the crust 3 of the ingot 4. Then follows a secondary cooling zone where further ingot crystallization occurs. The secondary cooling zone includes an arc section 5 directly below the crystallizer, the radius of curvature of which is equal to the radius of the crystallizer core Rg, as a result of which the ingot is not deformed in this region. Length l

5 of the arc section 5, including the length of the crystallizer, is chosen so that the ingot is crystallized by 45-65% of its tolyline. In this case, the crust can resist simultaneous deformation from the action of ferrostatic pressure and the development of the ingot without the formation of internal defects.

The length at which the ingot acquires a crust of a given thickness of 1; s can be counted25

tan by the known ratio-: I

where and - tolln1: on the ingot shorter case;

/ (- constant of crystallization, cm / min 301/2;

showers, Ml min.

From experimental data it is known that in the secondary cooling zone the value of the constant crystallization fluctuates within

/ C 2.55-2.65

Taking the aforementioned ingot crystallization values at the end of the arc section and continuously crystallizing L and using the above ratio, we obtain

L, (0,2-OO, 4) /.

where LO is the total length of the secondary cooling zone.

On the curvilinear section 6, the ingot 4 should be smoothly straightened so that the deformation of the inner layers 7 of the ingot, which are close to the solid and liquid phase, is reduced, due to the uniform distribution of this deformation over the entire length of the curvilinear part.

According to the well-known relation, the total deformation of a strip with a thickness h during extension from radius R to radius c is defined by the expression:

h adPri uniform distribution of deformation and about the length of the curved section we have

-i- ,. cons,

where 5 is the current length of the arc curve, measured from its end or the same expression

.

where a is a constant curve.

According to the invention, willow should be replaced with h - liquid thickness instead of h: the ingot phase at the maximum casting speed, which is the current and curvilinear section. Expressing the current arc length of the curve through the full length L2 of the crochet-linear segment, we obtain the natural equation of the curve according to the invention:

R:. but

L, - S where O; - the current value of the arc length of the curve, o (read about its origin. On the edge of the arc and curvilinear part ii ho, R Ro, and 5 / O, then the constant paeiia

RoL,

where ho is the thickness of the liquid phase of the ingot at the beginning of the section,

L is the f-distance between the layers 7 of the ingot at the end of the segment.

bf 5i

Then / g, - / ig (1 -t) - t,

and the natural equation of the curve takes the form

L,

R (). -W-, L-, --Si

Benefits known. Ratio m ds

will get

one -

L., - y.oRo

1 in t 1-t

where Co is the angle between the vertical and the ir, connecting the beginning of the curved section with the HeHTpoiM curvature of the mold. The value of t is determined from the condition that the deformation rate of the ingot layers 7 is not more than the permissible value. From this condition, 2- -0.7. Then the length of the curved section will be: LZ (1.3; - 1.8) oo RO. The presence of internal temperature stresses in the ingot can lead to its distortion after leaving the secondary cooling zone devices. To prevent this, the ingot should be held for some time by guiding devices after straightening. From these conditions, the length of the spacing section 8 is determined as follows. by ratio

L, () / ie,

where he is the maximum thickness of an ingot molded at the facility.

The total length of the secondary cooling zone LI-f-L2 + LS should not be less than the length of the liquid phase in the slot at the maximum casting speed.

Subject invention

A metal continuous casting plant containing a radial mold and guide devices for the ingot in the secondary cooling zone, which includes successive arc sections with a radius

equal to the radius of curvature of the mold, curvilinear and rectilinear sections, characterized in that, in order to provide P1 high speeds for casting and obtaining high-quality ingots, the arc section with the mold is 0.2-0.4 in length and the length of the secondary cooling zone , and the guides on the curvilinear section are set along a curve, the radius of which is radius nponopH, Hoiia; iCH relative to

casting to the difference between the length of the curvilinear section and the current arc length of the curve, the length of the curvilinear section being 1.3-1.8 times the radius of curvature of the mold by the angle between the vertical and the straight line connecting the beginning of the curvilinear section with the center of curvature of the mold.

SU1438559A 1970-06-18 1970-06-18 SU349238A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1438559A SU349238A1 (en) 1970-06-18 1970-06-18

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SU1438559A SU349238A1 (en) 1970-06-18 1970-06-18
US3729048D US3729048A (en) 1970-06-18 1971-04-01 Continuous metal-casting plant
FR7111939A FR2095323B1 (en) 1970-06-18 1971-04-05
DE19712117110 DE2117110A1 (en) 1970-06-18 1971-04-07
GB2687871A GB1332047A (en) 1970-06-18 1971-04-19 Casting of metal in a continuous casting plant

Publications (1)

Publication Number Publication Date
SU349238A1 true SU349238A1 (en) 1974-05-05

Family

ID=20452975

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1438559A SU349238A1 (en) 1970-06-18 1970-06-18

Country Status (5)

Country Link
US (1) US3729048A (en)
DE (1) DE2117110A1 (en)
FR (1) FR2095323B1 (en)
GB (1) GB1332047A (en)
SU (1) SU349238A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT331439B (en) * 1973-07-24 1976-08-25 Voest Ag Strangfuhrung for a continuous casting plant
JPS5257027A (en) * 1975-11-06 1977-05-11 Ishikawajima Harima Heavy Ind Method of continuous casting
IN155878B (en) * 1980-04-02 1985-03-23 Nippon Steel Corp
CH654767A5 (en) * 1981-04-30 1986-03-14 Concast Holding Ag Method and device for bending a strand in a steel continuous casting system.
US6467533B1 (en) * 1999-10-28 2002-10-22 Sumitomo Metal Industries, Ltd. Machine and method for continuous casting of steel
DE102008027496A1 (en) 2007-06-13 2008-12-18 Sms Demag Ag Procedure for continuous casting of a metal bar for the production of slab, thin slab, billets, block and preprofile -product, comprises linearly guiding the metal bar between flexible element and guide element over a section of arc length
DE102007032985A1 (en) 2007-06-13 2008-12-18 Sms Demag Ag Continuously casting a metal strand, comprises downwardly leading the cast strand to a mold, guiding along a strand guide, solidifying within the strand guide and then diverting and directing in casting direction behind the strand guide
AT507590A1 (en) 2008-11-20 2010-06-15 Siemens Vai Metals Tech Gmbh METHOD AND CONTINUOUS CASTING SYSTEM FOR MANUFACTURING THICK BRAMMS
DE102015202608A1 (en) * 2015-02-13 2016-08-18 Sms Group Gmbh casting plant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250973B (en) * 1963-05-03
US3603377A (en) * 1965-08-09 1971-09-07 Georgy Lukich Khim Curvilinear mold and secondary cooling system for continuously cast metal

Also Published As

Publication number Publication date
DE2117110A1 (en) 1971-12-23
GB1332047A (en) 1973-10-03
FR2095323A1 (en) 1972-02-11
US3729048A (en) 1973-04-24
FR2095323B1 (en) 1975-04-18

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