SU1627314A1 - A mould of a machine for continuously casting blanks - Google Patents

Abstract

The invention relates to metallurgy. The purpose of the invention is to simplify the design of the mold (K) and increase its operational reliability. It contains K wide walls (AL) with a tool for clamping (SP), and narrow walls (CS) with mechanisms for their movement (MP). The DCs are kinematically connected to each other by means of intermediate shafts, combining in pairs the upper and lower MP walls, each pair of MP being associated with a single drive. The backlash sampling mechanisms are kinematically connected to the MP. In the joint node of the joint stock of the joint venture with the loop, the clearance is made;

Description

The invention relates to metallurgy, and more specifically to the continuous casting of metals.

The aim of the invention is to simplify the design of the mold and increase its operational reliability.

Figure 1 shows the mold, a view in plan, figure 2 is a section aa in figure 1.

Tunable mold consists of two wide walls 1 and 2 and two end 3 and 4 with water-cooled copper plates. The wide wall 2 moves in two slots 5 of the base wide wall 1 and is pressed against two springs 6 mounted on the sleeves 7.

The end walls 3 4 are mounted on axles 8 in rolling pins 9 and 10 and the sleeve 11 are connected via a spring 12 with a thrust 13, which moves synchronously with the rolling pin 9 from the double worm-screw mechanism 14 with a screw 15 with a thread opposite to

directions for threading screws.

The left and right sides of the screw-screw mechanisms of both the top 14 and the bottom 16 are connected in pairs by intermediate shafts 17, 18 by means of a bevel gear 19. Both the top and bottom screws-screw mechanisms are driven by drives 20, 21, removed from the corrosive environment (high humidity and temperature zones) outside the wall of the hopper 22 by means of quick-release spindle connections 23.

On the frame of the swing mechanism 24, the crystallizer is attached with cross-pieces 25 with wedges 26.

The mold is clamped to the base stops 27 and the required working force is clamped between the wide walls by the spring 29 of the clamp mechanism 28 by means of a clamp 30

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rod cylinder 31 connected to the head 32 stzhki 7.

Zzor between the bracket 30 and the head 32 is made somewhat larger than the magnitude of the stroke of the rod. If necessary, a clearance 33 can be installed in the gap between the bracket 30 and the head 32 (conventionally shown only to the right).

The adjustment of the mold to a predetermined ingot width during the casting process is performed as follows.

Pressure is applied to the cylinder of the pressing mechanism 28, as a result, the clamping force of the end walls 3, 4 is released by the spring 29, after which the end walls remain clamped only by the force of the springs 6, sufficient to overcome the ferro-gas pressure of the metal. After removal of the clamping force, the actuators 20, 21 are activated according to a predetermined program, and the mold is rebuilt to increase or decrease the ingot width.

It is also envisaged the possibility of restructuring with loosened walls with the formation of the necessary gap between them and the narrow walls. At the same time, in order to avoid possible opening of the joints (forming an enlarged gap) between the wide and narrow copper walls, the fixed base wall 1 is provided with restrictions on the movement of the movable wide wall 2 in the form of adjustment screws 34.

After the specified ingot width has been reached, the technological taper of the end walls 3 and 4 is established, after which the pressure in the cylinders of the pressing mechanism 28 is released and the mold is pressed against the lip stops 27 by springs 29. At this, the crystallizer rebuilding is considered complete

The technical and economic advantages of the crystallizer as compared with the prototype are as follows.

The competitiveness of the well-known slab caster is characterized by the expansion of the range of cast slabs by the operational implementation of small orders in volume, a significant increase in productivity of ds 2 million tons per year.

 of the main measures aimed at reducing downtime and increasing the machine time of the caster, is the use of a mold tuned to the width of the cast billet directly in the casting process.

The kinematic coupling of the narrow walls in the mold allows for width adjustment to be limited to two drives located in the cold zone behind the bunker on one side of the stream, which is essentially an iri2 stream caster. Installed outside the mold on the frame

swing mechanism and clamping drives of wide walls.

This allows the machine to use one set of drives for the entire fleet of interchangeable molds used

on this MI g, 3. Simplifies the design and kinematic connection of the worm gears of the backlash sampling mechanisms and the movement of narrow walls. The combination of these signs leads to increased reliability

mold and simplify its design.

Claims (1)

Invention Formula 1The machine mold for continuous casting of billets containing fixed base and movable wide walls, narrow walls placed between them, equipped with upper and lower worm gears, connected to drives with quick-release spindle joints, grip mechanisms for backlash extraction, and means for clamping narrow walls wide and having currents and drives, in order to simplify the constrictions of the mold and increase its operational reliability, the narrow walls are kinematically connected to each other by means of intermediate shafts, connecting the upper and lower mechanisms of wall movement in pairs, each pair of moving mechanisms associated with a single drive, worm gear of the backlash sampling kinematically connected, respectively with worms of mechanisms displacements, in the nodes of the connection of the rods with the movable wide wall, gaps no less than the size of the working stroke of the rods are made, and the rods are additionally equipped with removable spacers with the possibility of their installation into the gaps when the wide walls break apart. 2 Crystallizer pop1, different and so on. that the screws of the sampling mechanism are made with cutting, the opposite direction of cutting the screws of the mechanism for moving the wall 20 M 23 19 f 32 28 23 5 34 7 3 g (rig 1 i5 ff s / 7 „ / 22 W ft J / j3 / 2 /14 / TO