RU2797199C1 - Roller section of continuous casting machine - Google Patents

Abstract

FIELD: foundry operations.

SUBSTANCE: invention relates to the precise and efficient assembly of a continuous casting machine. The roller section of the continuous casting machine consists of guide rollers 1, base frame 2 with lugs 3, at least five frames 4 made in a U-shaped section, each of the five frames 4 additionally contains two hydraulic jacks 7 installed on each side, and the lower part of jack 7 is rigidly fixed on support bracket 5, and its upper part acts through the rod of hydraulic jack 7 on mating plate 6 for precise control of the radius of the continuous casting machine. A low hydraulic jack is used as a jack, and a metal bracket is used as its support.

EFFECT: invention provides high operational reliability, improves the accuracy of setting the radius of the continuous casting machine, uninterrupted rolling, reduces the likelihood of rupture of the surface layer of the poured metal and spillage of liquid metal on the continuous casting machine, reducing downtime of the continuous casting machine.

3 cl, 3 dwg, 1 ex

Description

The invention relates to foundry, in particular to the precise and efficient assembly of a continuous casting machine.

Known roller section [1] (USSR author's certificate No. 526440, Roller section, IPC: B22D 11/128; declared: 1985207, 01/11/1974; published: 08/30/1976), including a frame with driven and non-driven rollers, the plane of which To simplify the installation and dismantling of the roller section from the side of the metal inlet during the casting process, it is made coinciding with the direction of the radius of curvature of the installation, and on the opposite side of the frame there are retractable supports, which are made in the form of rollers mounted on eccentric axles.

The disadvantage of this invention is that the setting of the curvilinear radius of the rollers is due to the eccentric axles, the contact surface of which will wear out during the adjustment process, which sets a certain service life for the axles.

The closest in technical essence and the achieved result is the design of the roller section of the continuous casting machine [2] (RF patent RU 2254204 C1, Roller section of the continuous casting machine, IPC: B22D 11/128; declared 11.02.2004, No. 2004103820/02; published: 06/20/2005, Bull. No. 17), containing a support frame made in the form of four frames of box-shaped cross-section, in pairs permanently connected to each other by spacers with bolts, and on the shelves of the frames facing inward to the section of the passage of the ingot, fixed on bearings in pillows with lubrication inlets, guide rollers, also the roller section is equipped with four pipe risers, each of which is independently connected to the inlet lubrication manifold, located in a plane perpendicular to the risers, and made in this plane U-shaped, covering the support frame and the section of the passage of the ingot , and each of the risers along the length of the roller section within the internal cavities of the box-shaped cross-section frames connects in series several lubrication feeders, each of which, in turn, is connected by pipe wiring to the holes made in the frame shelf under the pillows, coinciding with the inlet lubrication holes of the pillows. The placement of all elements of the roller section lubrication system inside the cavities of the box-shaped cross-section frames is achieved by making their outer walls with detachable, fixed bolts.

The disadvantage of this invention is the high rigidity of the structure, with the inability to adjust the placement of the rollers.

The technical result of the present invention is to reduce the exposure time of the curved section of the stream of the continuous casting machine (bloom type), since earlier the sections were adjusted by an overhead crane (each section in turn), in the claimed invention it is proposed to adjust all sections simultaneously; increasing the reliability and accuracy of the alignment of the radius of the continuous casting machine; reduction of the probability of rupture of the surface layer of the poured metal and spillage of liquid metal on the CCM; reduction of downtime in the work of CCM.

The claimed technical result is achieved by the fact that the roller section of the continuous casting machine, consisting of guide rollers 1, the base frame 2 with lugs 3, at least five frames 4 made of a U-shaped section, according to the invention, each of the five frames 4 additionally contains two hydraulic jacks 7 installed on each side, and the lower part of the jack 7 is rigidly fixed on the support bracket 5, and its upper part acts through the jack rod 7 on the mating plate 6 for precise control of the radius of the continuous casting machine.

In addition, a low hydraulic jack is used as a jack, and a metal bracket is used as its support.

The present invention makes it possible to protect the continuous casting machine from instability of the installation of sections along the trajectory set for this machine, by more precise control of the geometry of the rolling line, due to the presence of each frame 4 on each side of two hydraulic jacks 7, with which it is possible to set the desired radius continuous casting machines.

The essence of the invention is illustrated by drawings, which show:

Figure 1 - section of the roller continuous casting machine (front view)

Fig.2 - section of the roller continuous casting machine (left view)

Fig.3 - section of the roller continuous casting machine (local view)

Description of reference position numbers:

1 - guide rollers;

2 - base frame;

3 - eyes;

4 - frame;

5 - support bracket;

6 - counter plate;

7 - jack.

The roller section of the continuous casting machine consists of frames 4, guide rollers 1, mating plates 6 installed in pre-made grooves of the base frame 2, which is attached to the continuous casting machine through lugs 3, jacks 7 mounted on support brackets 5, allowing to act on base plate.

Guide rollers 1 are cast discs located in the upper part of the base frame 2 along the axis of the CCM strand and ensure the movement of workpieces along the production line.

The base frame 2 is a steel structure that acts as a support.

The lug 3 is located in the lower part of the base frame 2 and is intended for attaching it to the CCM.

, использование проката с данными характеристиками обусловлено: весом регулируемых секций и необходимым запасом прочности. Ответные пластины 6 расположены в верхней части базовой рамы 2 и предназначены для выставления радиуса МНЛЗ, имеют степень подвижности, которая ограничена болтами.Counter plates 6 are made of sheet metal Sheet 40

, the use of rolled products with these characteristics is due to: the weight of the adjustable sections and the necessary margin of safety. Reciprocal plates 6 are located in the upper part of the base frame 2 and are designed to set the radius of the CCM, have a degree of mobility that is limited by bolts.

Jacks 7 are located in the lower part of the base frame 2 and are rigidly fixed to the bracket 5 attached to the base frame 2.

Assembly of the device is carried out as follows.

With a bridge crane, the roller section of the continuous casting machine is installed through the lugs 3 on the continuous casting machine and fixed. Hydraulic jacks 7 are installed on metal support brackets 5, five on each side.

After assembly, hydraulic jacks 7 are put into action, acting on the counter plate 6, they adjust the frame 4 so that all guide rollers 1 are set along the radius of the continuous casting blanks specified for this machine.

As a jack 7, a low hydraulic jack of the type DN10M15 Q = 11.3 t can be used, the stroke of the rod is 15 mm, because the hydraulic jack provides high load capacity and smooth adjustment, which is necessary for precise adjustment of the continuous casting machine.

т.к. использование проката с данными характеристиками обусловлено: весом регулируемых секций и необходимым запасом прочности.Bracket 5 is used as a support for the jack, the supporting surface of which is made of Sheet

because the use of rolled products with these characteristics is due to: the weight of the adjustable sections and the necessary margin of safety.

The device works as follows.

During the transfer of the mill to another production format, the base frame 2 is installed on the continuous casting machine and rigidly fixed through the lugs 3. Then, hydraulic jacks 7, 5 on each side, are installed on the support brackets 5. On the base frame 2, frames 4 are installed in pre-made grooves, with guide rollers 1 and counter plates 6, which have a degree of mobility. After assembly, hydraulic jacks 7 are put into action, acting on the mating plate 6, they adjust the frame 4 so that all guide rollers 1 are aligned along the radius of the continuous casting blanks specified for this machine.

Example: In the converter shop of JSC EVRAZ NTMK, roller sections of continuous casting of billets were tested on the continuous casting machine No. 2 in the production of bloom-type rolled products.

During the transfer of the mill to another production format, all sections on the line (4 strands) are replaced. Previously, the mill sections were set up and adjusted using an overhead crane. There is only one overhead crane above the line, and each section of the mill is set up and adjusted in turn, which is quite lengthy and laborious. After testing the claimed device, all sections are adjusted simultaneously using hydraulic jacks 7, which ensures accurate alignment and regulation of the radius of the continuous casting machine, which ensures uninterrupted rolling and reduces the likelihood of breaking the surface layer of the poured metal and spilling liquid metal onto the continuous casting machine, as the result is the prevention of long downtime and financial losses.

устанавливали гидравлические домкраты 7 типа ДН10М15 Q=11,3 т, Ход штока 15 мм по 5 с каждой стороны. На базовую раму 2 в заранее изготовленные пазы Ø80мм устанавливали рамы 4 с габаритными размерами 2460×600×1000, с направляющими роликами 1 и ответными пластинами 6, выполненных из Листа

которые имеют возможность подвижности. После сборки всех секций, приводили в действие гидравлические домкраты 7, которые воздействовали на ответную пластину 6 и регулируют раму 4, чтобы все направляющие ролики 1 выставить по радиусу 12 метров заданного для этой машины непрерывного литья заготовок.The base frame 2 with overall dimensions 4000×2460×1400 was installed on a continuous casting machine and rigidly fixed through the lugs 3. Then on the support brackets 5 made of sheet

installed hydraulic jacks 7 type DN10M15 Q = 11.3 t, stroke 15 mm, 5 on each side. Frames 4 with overall dimensions 2460 × 600 × 1000, with guide rollers 1 and mating plates 6, made of Sheet

that have mobility. After assembling all sections, hydraulic jacks 7 were actuated, which acted on the counter plate 6 and adjusted the frame 4 so that all guide rollers 1 were set along a radius of 12 meters of the continuous casting blanks specified for this machine.

Tests of a prototype of the proposed device of the roller section of the continuous casting machine confirmed:

- reduction of time spent on the exhibition of a curved section of three sections:

• with two strand production 6 times

• with four strand production 12 times

- high operational reliability of work;

- increasing the accuracy of setting the radius of the continuous casting machine;

- uninterrupted rental;

- reduction of the probability of rupture of the surface layer of the poured metal and spillage of liquid metal on the CCM;

- reduction of CCM downtime.

Thus, the claimed technical solution fully fulfills the technical result.

The analysis of the prior art, including the search for patents and scientific and technical information and the identification of sources containing information about the analogues of the claimed technical solution, made it possible to establish that the applicant did not find sources characterized by features identical to all essential features of the claimed invention.

Therefore, the claimed invention meets the criteria of "novelty" and "inventive step".

References:

1. USSR author's certificate No. 526440, Roller section, IPC: B22D 11/128; declared: 1985207, 01/11/1974; published: 08/30/1976.

2. RF patent RU 2254204 C1, Roller section of a continuous metal casting machine, IPC: B22D 11/128; declared 11.02.2004, No. 2004103820/02; published: 20.06.2005, Bull. No. 17.

Claims (3)

1. The roller section of the continuous casting machine, consisting of guide rollers 1, a base frame 2 with lugs 3, at least five frames 4 made in a U-shape, characterized in that each of the five frames 4 additionally contains two hydraulic jacks 7 installed on each side, with the lower part of the jack 7 rigidly fixed on the support bracket 5, and its upper part acts through the jack rod 7 on the mating plate 6 for precise control of the radius of the continuous casting machine. 2. The roller section according to claim 1, characterized in that a low hydraulic jack is used as a jack. 3. Roller section according to claim 1, characterized in that a metal bracket is used as a support for the jack.

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