CN2043531U

CN2043531U - Ingot puller for self-consumption vacuum furnace with double-electrode

Info

Publication number: CN2043531U
Application number: CN 88211973
Authority: CN
Inventors: 施红家; 马征骙
Original assignee: Shanghai Iron and Steel Research Institute
Current assignee: Shanghai Iron and Steel Research Institute
Priority date: 1988-06-30
Filing date: 1988-06-30
Publication date: 1989-08-30

Abstract

The utility model discloses an ingot puller for a self-consumption vacuum furnace with double electrodes, which relates to the field of casting. The ingot puller for a self-consumption vacuum furnace with double electrodes is characterized in that an ingot pulling rod (2) is pulled down, and meanwhile the ingot pulling rod can synchronously rotate with an ingot mould (3), which enables molten metal drops to uniformly distribute on the ingot mould (3). Thus, the ingot puller for a self-consumption vacuum furnace with double electrodes provides the possibility for casting superalloy fine grained ingot whose ratio of length and diameter is large. The self-consumption vacuum furnace with double electrodes is adopted, which has pulled out the casting ingots of different diameters successfully. The utility model is also suitable for other smelting equipment which has the same requirement.

Description

Ingot puller for self-consumption vacuum furnace with double-electrode

A kind of ingot puller of vacuum bipolar electrode self-consuming furnace, the utility model relates to casting field.

The vacuum bipolar electrode self-consuming furnace that early eighties grows up is that a kind of can producing has even fine grain, the novel vacuum melting equipment of low segregation high strength superalloy ingot casting, in this self-consuming furnace, flatly opposed two consutrodes in the vacuum chamber, when to the direct current of electrode input low-voltage and high-current, place, two opposed consutrode end clearances will produce electric arc and with comsumable melt.The melt metal drop just splashes into ingot mould, is piled into ingot.Simultaneously, Yi Bian solidify, Yi Bian by drawing spindle blade that fine-grained ingot is drawn.

U.S. particulate metal company has disclosed a kind of vacuum bipolar electrode self-consuming furnace in the US4251412 patent specification of the said firm's application, in this equipment, when drawing spindle blade to move downward ingot casting pulled out, ingot mould is fixed, adopt this technology mode, we find, can not successfully pull out crystal ingot, this is because molten metal bath drops in and has been in half curdled appearance when arriving ingot mould, only borrows the gravity effect of drop just can not evenly distribute in ingot mould, especially for large diameter ingot casting, the molten drop that partly solidifies does not arrive the mould edge, only is deposited in around the Dummy plate, and influences the quality of ingot casting.

Our measure is that ingot mould is turned over, and like this, molten drop just may and evenly distribute along die wall in ingot mould under the effect of centrifugal force and gravity, and unlikely Dummy plate certain that only is deposited in.But find in the specific implementation, only ingot mould rotation, draw the downward dummy ingot of spindle blade, so at the ingot casting of rotation with draw between the spindle blade and can produce a kind of torsion, and cause ingot casting torsional fracture phenomenon, thereby, only when drawing the downward dummy ingot of spindle blade, make and draw spindle blade and ingot mould to rotate synchronously just to obtain uniform fine-grained ingot.

The purpose of this utility model is exactly to develop a kind ofly when drawing the downward dummy ingot of spindle blade, draws spindle blade to make the ingot puller of rotation synchronously with ingot mould again.

Fig. 1 is a schematic diagram of the present utility model, and wherein 1 is dummy ingot, the 2nd, draw spindle blade, the 3rd, ingot mould, the 4th, ingot mould seat axle, the 5th, cog, the 6th, slip shaft, the 7th, shifting slide gear, the 8th, direct current generator, the 9th, the cycloidal-pin wheel decelerator, the 10th, lower gear, the 11st, wheel is nibbled in lifting, the 12nd, lifting cycloidal-pin wheel decelerator, the 13rd, lifting direct current generator, the 14th, nut, 15 is screw mandrel, and 16 is sliding bearing, and 17 are following vacuum sealing device, 18 is last vacuum sealing device, and 19 is vacuum system, and 20 is the ingot mould water cooling plant, 21 for drawing the spindle blade water cooling plant, and 22 is guide post, and 23 is top deck, 24 is bottom deck, and 25 is vacuum chamber, and 26 is Dummy plate, 27 is to make the engagement of ingot mould axle 4 rotations nibble wheel, and 28 for making the meshing gear that draws spindle blade 2 rotations, and 29 is the meshing gear that slip shaft 6 is rotated, 30 is lower gear, 31 is flat key, and 32 is bearing, and 33 is end cap, 34 is shifting slide gear case spare, 35 is block bearing, and 36 is rolling bearing, and 37 is sliding bearing.

The utility model is described in further detail below in conjunction with schematic diagram.

The ingot mould 3 that holds molten drop is mounted on the ingot mould seat axle 4, the two adopts bolting to connect, ingot mould seat axle 4 is by rolling bearing 36, ingot mould water cooling plant 20 is fixedly mounted on the top deck 23, vacuum chamber 25 and ingot mould seat axle 4 and drawing between the spindle blade 2 by last vacuum sealing device 18 and following vacuum sealing device 17 seals, meshing gear 27 is fixed together with ingot mould seat axle 4, cog 5 with meshing gear 27 be intermeshing, and the number of teeth is identical, cog and 5 fixedly connected with an end of slip shaft 6, have a long keyway on the slip shaft 6, flat key 31 is housed in the keyway, flat key 31 is fixedly linked with shifting slide gear 7, at two ends that are connected of slip shaft 6 and gear 7 bearing 32 is housed, and moves with stable.Being fixedly connected on the gear 28 that draws on the spindle blade 2 intermeshes with gear 7, and

gear

26,7,27,5 the number of teeth all equates, the other end of slip shaft 6 is fixedly connected with gear 29, gear 29 intermeshes with the gear 10 that is contained in cycloidal-pin wheel decelerator 9 output axle heads again, decelerator 9 is the output axle heads that are contained in dc motor 8, therefore when driving, motor 8 just drives slip shaft 6 rotations, slip shaft 6 is again by

gear

5,7, meshing

gear

27,28 drives draw spindle blade 2 and ingot mould seat axle 4 to rotate simultaneously, so just can make to draw spindle blade 2 and ingot mould 3 rotation synchronously.

Draw Dummy plate 26 fixedly is housed on the spindle blade 2, because molten metal drop is directly to splash on the Dummy plate 26, therefore draw spindle blade 2 just must make water interlayer sleeve structure form, so that cooling water circulation cooling, draw an end of spindle blade 2 to be with screw mandrel 15, it and nut 14 mesh, and draw spindle blade water cooling plant 21 to place between gear housing 34 and the end cap 33 and are connected by bolting.Gear 28 and 7 are housed in the gear housing 34, and nut 14 is fixed in the end cap 33, and block bearing 35 is housed in water cooling plant 21, with stable motion of drawing spindle blade 2.Fixedly connected with lifting meshing gear 11 in the top of screw mandrel 15, and gear 11 intermeshes with lower gear 30, lower gear 30 is fixedly connected on the defeated end of output of lifting cycloidal-pin wheel decelerator 12, decelerator 12 is fixedlyed connected with the output axle head of direct current generator 13 again, therefore when direct current generator 13 drivings, draw spindle blade 2 to do up or down motion with the difference of driving direction.In order to make gear-box 34 with drawing spindle blade 2 to do motion up or down, sliding bearing 37 is equipped with at casing 34 two ends, sliding bearing 37 slides on guide post 22, guide post 22 symmetries are fixed between top deck 23 and the bottom deck 24, also fixedly connected screw mandrel 15 and slip shaft 6 between top deck 23 and bottom deck 24.

Adopt the said structure form, under the situation that motor 8 and 13 drives simultaneously, draw spindle blade 2 when doing motion up or down, and also and ingot mould 3 rotate synchronously, satisfied technological requirement.

Vacuum chamber 25 is vacuumized the vacuum requirement that reaches process stipulation by vacuum system 19 in the utility model.

Adopt consumable electrode vacuum furnace of the present utility model successfully to pull out the ingot casting of different-diameter.

The utility model succeed in developing for casting length and diameter provide than big superalloy fine-grained ingot may.

The utility model also can be used for other similar smelting equipment except can being used for vacuum bipolar electrode consumable equipment, for example electron beam furnace etc.

Claims

1, a kind of vacuum bipolar electrode self-consuming furnace ingot puller that can do synchronous rotation with ingot mould, it includes dummy ingot 1, draw spindle blade 2, ingot mould 3, ingot mould seat axle 4, Dummy plate 26, vacuum chamber 25, vacuum system 19 is characterized in that also including direct current generator 8 and 13, decelerator 9 and 12, four pairs intermesh and the mutual identical gear 5 and 27,10 and 29,11 and 30 of the number of teeth, and 7 and 28, be fixed on the gear 29 and have a long keyway, the slip shaft 6 of flat key also is housed in the groove, be enclosed within and draw spindle blade 2 one ends and be fixed on screw mandrel 15 on the gear 11, end cap 33, nut 14 draws spindle blade water cooling plant 21, gear housing 34, guide post 22, flat key 31 is fixedlyed connected with gear 7, and ingot mould 3 is fixed on the ingot mould seat axle 4, and gear 28 is fixed on and draws on the spindle blade 2, draw spindle blade 2 and ingot mould 3 to rotate synchronously so motor 8 can drive, and the driving of motor 13 can make and draws spindle blade 2 to move up and down.