SU719151A1 - Mechanism for drawing ingot from mold - Google Patents

Abstract

MECHANISM OF EXTRACTING INGOT FROM A CRYSTALLIZER, containing an ingot chamber, electromechanical drive for ingot movement, hydraulic cylinder for oscillating movement of ingot. Interconnected with a pallet by means of a rod, and a hydraulic control system, characterized in that, in order to improve the quality of the ingot, the movement of the ingot is moved by a movement, a movement, a movement, a body, a movement, a body, a movement, a body, a movement, the movement, the movement of the quality, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, the movement, ingot hydraulic cylinders having hollow rods V inside each of which is housed. rotatably, a screw that is in the upper part of the hydraulic cylinder is interconnected with a clamp relative to the hydraulic cylinder body, and the hydraulic control system is equipped with a solatina connecting the discharge line with the hydraulic cylinder at the time of the ingot oscillation.

Description

L

WITH

C7i The invention relates to metallurgy, in particular to the electron beam melting of ingots. The technical -yfjoBfetre with the time of 1 1 6th furnace furnaces is determined by the tendency to increase the weight, the size of the bars “aBJiHeMHJf ingots ib Eugene treatment to the quality of the ingot. depleted mezhZVYi miGeVaIs mounted on electron-beam sonders do not allow the complete fulfillment of the above requirements. The closest spraying equipment and reaching the end result is a device for: drawing an ingot from a crystallizer, which can be removed from an electromotive drive of movement of the ingot with a traverse, hydrographic movement, and the displacing pattern. and interconnected with poddm thgtbc a-yo-yo, hydraulic control system The disadvantage of this mechanism is the low quality of the surface of the ingot, because the mechanisms used have significant gaps in the system. their transmissions which result in the time to sample the drive reversiroyanit these gaps and stop rod drawing for some time, which makes it possible education well dense crown mold on the perimeter. . Kromyotny, in connection with the increase in the mass of the mass transfer of the aforementioned mechanisms, the above mechanisms do not provide the necessary force for displacing the gauge and have considerable weight dimensions. The drives of the ingot drive in the operation of the nbm bases are open, often replaced, which reduces the reliability of all equipments of the electron-beam furnace. - The purpose of the invention is to improve the quality of the ingot. The goal is achieved by the fact that; drive stretching from the ingot cr stshtlizato ra electron furnace oypolvey i BHfle connected to k Merbach tUTka gydrspzyyindrov (du YaoZY1o s ki. each of which, with E azmeschen vratsovi screw yzai mrdeystvuyuschy a nut fixed to the piston at the top of stGM Hydrocylinic V11T SffohM butt-end is interconnected with its means relative to the case of hydrodynamic 5 ° 57 ° T1p |) Imer, clutches, and for the purpose of the stabilization of the hydroelectric control ingot oscillation is additionally equipped with a switchgear: m at the moment of oscillation: the discharge line with a bore || mi on the Lost of hydrocylinders of the ingot drive drive. /

719151 In FIG. 1, a schematically isoshing mechanism for drawing an ingot from a crystalizer of an electron-beam furnace; FIG. 2 is a section A-A in FIG. 1; Me (annemyvnit givani contains a casting chamber 1, on which hydraulic cylinders 3 are fixed through flange 2, in hollow rods of which 4 screws 5 are interconnected, which interact with nut 6, yypolyinby for one purpose with a piston 7, and installed with its end 8 in the upper part of the hydraulic cylinder G1OD5dah.ft.a, 9 We are able to work on; 8 half of the sleeve 16 means: 6m njpykHH 11 and plunger 12, .hydrocylinder 13 of oscillating movement of ingot 1, fixed y trap, wool 14 and Interconnected with the subzone 15 by means of a suction rod 16. mehan The control system also contains a hydraulic control system equipped with a Die-Scale GOLDER 17. 17.,.;.:;. ,, .. ,, The mechanism operates as follows. ..:.. -;.,:: .. ..;: The molten metal in the crystallizer is formed into an ingot and the solidified s of the lower part is connected to the tray 15. To disrupt the crown of the ea-verdite metashla along the perimeter of the crystallizer, it is necessary for the cream to provide a reciprocating (oscillatory) motion. First, the oscillation should be directed, upward / w, to the goal of “squeezing the force of the ingot. For this, fluid from the oscillating hydraulic cylinder 13 is supplied to the piston cavity. hydraulic control system. - In the case of fluid flow into the rod: the oscillating cavity of the hydraulic cylinder, the ingot interconnected with the rod 16 by the tray 15, is twisted down. The amplitude of oscillation of the ingot is determined by limiting the course of the hydro- and lindra oscillations of 13. The oscillation frequency of the ingot is determined by the flow rate of the liquid supplied alternately to the bulk or the torrent yolosty data; g idrotsilindra.;:; . ; / ./- .-, L. :: ::: After the execution of a certain oscillation, the ingot is scrapped down. For this, liquid is served; the bone in the piston cavity of the P hydraulic cylinder of the movement of the ingot 3 and ONE-temporarily into the jug In the means of fixing the screw. Liquid pressure is full-; Jer 12, and together; with it the same half gear 4 coupling 10 moves BBeiJx, springs 1 G, - ;;.;, - that leads to the disengagement of the half of 10A 10 with half of the coupling 9. Thus, Screw 5 is free-worn by the end 8 on the sub 11SP 11IKI and has the center of the fork and the arm and the arm. The pistons 7 and together with them the secret of the hydrocylide 3 under the action of the pressure of the fluid in the cavity P remit the VC, interact through the rods 4, the riyer 14, the extraction rod 16 and the pallet 15 onto the ingot in order to realize the extract and the ingot from the crystallizer. length After the ingot of a certain length has been drawn, the flow of fluid into the piston cavity II is stopped, and the cavity B is connected to the drain. Under the action of the springs 11, the half coupling 10 engages with the toothed coupling half 9, which is rigidly connected to vint.om 5. Thus, the screw 5 is rigidly fixed relative to the hydraulic cylinder body 3. The screw 5 is connected to a secret b, made in one piece with the piston 7, therefore the piston and rigidly interconnected with it, the stub 4 is also fixed relative to the cylinder of the hydraulic cylinder 3.

For the purpose of sampling the backlashes in the screw gear, the screw 5 is the nut b in the pneumatic cavity C and the liquid is supplied with pressure through the valve 17.

Thereafter, fluid pressure is applied to the oscillation hydraulic cylinder, the ingot 13, which provides for the reciprocating movement of the ingot with a certain amplitude and oscillation frequency. Further, the cycle repeats (which allows you to remove the ToK from the crystallizer with a definite length and max: weight).

Thus, due to the fixation of the pistons and the interconnection of the itiitbcrv with them, the traverse is fixed rigidly, and the oscillation hydraulic cylinder is installed on the coil. The hydraulic cylinder kol yy in the implementation of the ingot reciprocating motion rests on the traverse, and the force

enakenobremenno. Hard fixation of the crosshead eliminates the effect of compressibility of fluid in the cavity of long-stroke hydraulic cylinders. For example, with a cylinder stroke of 4 m, the compressibility of a fluid when drawing ingots weighing up to 100 tons can be 12-15 mm, and the amplitude of oscillation of an ingot requires only 3-5 mm.

Consequently, the rigid fixation of the traverse at the time of ingot oscillation

0 ensures the oscillation amplitude stabilization, which leads to a decrease in the quality of the ingot. In addition, at the time of the ingot oscillation, the fluid is provided in the piston cavity.

5 hydraulic cylinders move the ingot, which provides a selection of backlash in the screw transmission due to the loading of the nut interconnected with the screw. This also contributes to an increase in the quality of the ingot.

When implementing the invention, it is possible to obtain large ingots in electron beam furnaces while simultaneously improving the quality of the ingot. According to industrial research

5 ingots melted in electron beam furnaces, the waste into chips is about 11% by weight of the ingot using existing extrusion mechanisms.

0

The use of the invention will reduce the waste in chips up to 4% with a simultaneous increase in quality: the total ingot. five

The annual economic effect minus the cost of upgrading the stretching mechanism and its management will be about 200 thousand rubles.

Claims (1)

MECHANISM FOR PUSHING INGOT FROM A CRYSTALIZER containing an ingot chamber, an electromechanical ingot moving drive, an oscillating motion hydraulic cylinder of an ingot interconnected with a pallet by means of a rod, and a hydraulic control system, characterized in that, in order to improve the quality of the ingot, the moving drive is made in the form of an ingot hydraulic cylinderWood with hollow rods ^ inside each of which is placed, with the possibility of rotation of the screw, which in the upper part of the hydraulic cylinder is interconnected with a relative lock but the cylinder housing and the control hydraulic system is equipped with a spool in the connecting point of oscillation of the ingot discharge pipe with a hydraulic cylinder. ω m With Joint venture In Fig. 1 schematically shows a mechanism for drawing an ingot from a crystallizer of an electron beam furnace; figure 2 is a section aa in figure 1. The pulling mechanism contains 5 a chamber 1, on which hydraulic cylinders 3 are fixed through a flange 2, in the hollow rods of which 4 there are screws 5 interacting with a nut 6, made in one piece with the piston 7, and rotatably mounted with its end 8 in the upper part of the hydraulic cylinder. At the end 8, a dumuft 9 ^ is fixed. wea ___________...... ._____. .. acting with a half coupling 10 ~ * ingot from a crystallizer which 15 by means of springs 11 and. plunger 12, '. ...............-- · hydrocylinder 13 of the oscillatory movement of the ingot 1, mounted on the tra-. faith 14 and Interconnected with the pallet 15 by means of the exhaust rod 16. 20 The mechanism also contains a hydraulic system, hydraulic control system £ 1].