CN2195744Y - Cold crucible of induction smelting furnace - Google Patents

Abstract

The utility model discloses a cold crucible of an induction smelting furnace, composed of a plurality of copper tubes combined with each another like a fence. The upper end of each copper tube laterally bends outwards to weld with a water filling sleeve to form a shape of acoustic horn. The cross section of the vertical copper tube is 'D'-shaped, and the clearance between the tubes is filled and insulated by fireproofing material. The inner wall coated with a layer of Y2 O3 and the water filling sleeve welded with the upper end of the copper tube is divided into a charging and a discharging water chambers which are respectively welded with a charging and a discharging water faucets, and the water launching sleeve is communicated with the bottom of the crucible. A bottom pouring device composed of a pour plug head, a pour plug ring, a crucible spacer block and a graphite supporting plug is arranged in the center hole of the bottom of the crucible. When pouring, the graphite supporting plug provided with a breaking groove is broken by a plug breaking rod, the pour plug head falls, and the fuse element flows out.

Description

Cold crucible of induction smelting furnace

The utility model belongs to a kind of equipment of melting high temperature active metal, specifically a kind of cold crucible of induction melting furnace.

Melting high temperature active metal generally adopts vacuum arc furnace ignition, equipment such as electron beam furnace or plasma skull crucible, but complex process, and investment is big.The eighties development abroad come melting high temperature active metal with the cold crucible induction melting.The key of this technology is the structural design of cold crucible, and the much more external copper pipe combined types that adopt are similar to fence outward, but can only pour into and can not realize rising pouring.And the disclosed a kind of cold crucible of Russian thermoelectric research institute also is the fence type combination, it is horn-like that the top is, has the rising pouring device, realized rising pouring, but rising pouring apparatus structure complexity, volume is big, separate fully with crucible, water sleeve inlet and outlet system pipeline complexity, water fittings is numerous, and is totally unfavorable to vacuum melting.

The purpose of this utility model is to provide the cold crucible of a kind of inlet and outlet system and the simple induction melting furnace of rising pouring apparatus structure.

The cold crucible of the utility model design is combined by several copper pipe fence types, and the outwardly-bent one-tenth toroidal of epimere has certain spacing between the every copper pipe, with refractory material its envelope is annotated with insulation.Molten bath copper pipe partly is pressed into " D " tee section, and the crucible inwall is coated with Y ₂O ₃Coating causes the crucible short circuit or beats arc behind the metal molten preventing.Upper water sleeve is a ring-type, be communicated with the outwardly-bent mouth of pipe welding that is toroidal of copper pipe epimere, outer rim at upper water sleeve is welded with two water nozzles, wherein any water nozzle can be as water inlet tap or faucet, be welded with two dividing plates in the upper water sleeve the inside upper water sleeve is divided into two partly, wherein arbitrary part all can be used as intake chamber or water-supplying chamber.Locate to have the slit for arbitrary in two dividing plates, make water jacket not form loop, reduce and cause the eddy current that on water jacket, produces by magnetic field.The copper pipe lower end is communicated with the lower water jacket welding, and lower water jacket communicates with crucible back welding water receiving road.Water enters intake chamber by water inlet tap, flows into lower water jacket by the copper pipe that communicates with intake chamber, upwards backflows to upper water sleeve water-supplying chamber from the copper pipe that communicates with water-supplying chamber again, is flowed out by faucet again.The centre bore that is positioned at the bottom of the crucible is provided with by annotating chock plug, annotating the rising pouring device that plug ring, crucible cushion block and graphite support plug are formed.The graphite support plug is to have the disconnected groove of V-arrangement, the hollow tube that vertically cracks, the jack centre bore at the bottom of crucible, and the upper end of annotating chock plug is tapered, and with notes plug ring conical surface seal, the melting zone is stretched at its top, sits up straight down and puts in the hole slot of graphite support plug.Annotate plug ring and match with the crucible cushion block and pushed down, annotate chock plug, annotate plug ring, the crucible cushion block is all used and the less refractory material of smelting metal reactivity is made by cushion block.The lower end of annotating chock plug and graphite support plug even is connected on the lower water jacket with tungsten filament.During cast, only need to make it to disconnect from the disconnected groove of V-arrangement by the stopper rod bump graphite support stopper rod end of beating that is put in outward by stove in the stove, the notes chock plug falls together with the graphite support stopper rod section that is cascaded with tungsten filament and hangs a side, and melt flows down immediately and enters in the mold.

Effect of the present utility model is: compared with prior art, the cold crucible inlet and outlet system of the utility model design adopts goes up lower water jacket, and simple in structure, the rising pouring apparatus structure is ingenious, pours into a mould easy.But adopt the multiple high temperature active metal of the utility model melting, product recovery rate height.

The utlity model has four accompanying drawings:

Fig. 1 is a cold crucible structural representation of the present utility model.

Fig. 2 is the schematic diagram of upper water sleeve of the present utility model.

Fig. 3 is the structural representation of rising pouring device of the present utility model.

Fig. 4 is the schematic diagram of graphite support plug of the present utility model.

Now in conjunction with the accompanying drawings and embodiments the utility model is further described:

As shown in the figure: the utility model is combined by copper pipe 4 fence types of 15 φ 14 * 2mm in the present embodiment, its outwardly-bent toroidal that is in upper end, in, hypomere is straight barrel type, the spacing between every copper pipe 4 is 2.5mm, the spacing slit of vertical component is with refractory material filling insulation.The crucible molten bath of straight barrel type copper pipe partly is pressed into " D " tee section, and inwall is coated with Y ₂O ₃Coating, crucible internal diameter 74mm, height 180mm.Upper water sleeve 3 is a ring-type, be communicated with the outwardly-bent port part welding that is toroidal of bobbin 4 epimeres, outer rim at upper water sleeve 3 is welded with two water nozzles 1, wherein any water nozzle 1 all can be used as water inlet tap or faucet, be welded with two dividing plates 12 in the inside of upper water sleeve 3 upper water sleeve 3 is divided into intake chamber and water-supplying chamber's two parts, wherein arbitrary part all can be used as intake chamber or water-supplying chamber.In two dividing plates 12 arbitrary is outer to have slit 13 together with upper water sleeve.The lower end of copper pipe 4 is communicated with lower water jacket 6 welding, is welded with bottom ring 7, lower water jacket 6 and 5 welding at the bottom of the crucible in the bottom of lower water jacket 6, and the water route communicates.Water enters hydroecium as intake chamber by the water nozzle 1 as water inlet tap, enter lower water jacket 6 by 8 copper pipes 4 that communicate with intake chamber, upwards backflow to water-supplying chamber from other 7 copper pipes 4 that communicate with water-supplying chamber again, flow out by another water nozzle 1 again as faucet.Being positioned at the bottom of the crucible 5 centre bore is provided with by annotating chock plug 8, annotating the rising pouring device that plug ring 9, crucible cushion block 10 and graphite support plug 11 are formed.Annotate chock plug 8, annotate plug ring 9, crucible cushion block 10 makes by refractory material.Graphite support plug 11 is to have the hollow tube that the disconnected groove of V-arrangement vertically cracks, jack centre bore of 5 at the bottom of crucible, the upper end of annotating chock plug 8 is tapered, with notes plug ring 9 conical surface seals, the melting zone is stretched at its top, sit up straight down and put in the hole slot of graphite support plug 11, notes plug ring 9 matches to merge with crucible cushion block 10 and is pushed down by cushion block 10.The lower end of annotating chock plug 8 and graphite support plug 11 is connected on the lower water jacket 6 with tungsten filament.During cast, only need to clash into graphite support plug 11 terminations by the stopper rod of beating that is put in by stove in the stove outward, its bar section promptly fractures from the disconnected groove of V-arrangement, annotates chock plug 8 and falls, rod end together with the graphite support plug 11 that is cascaded with tungsten filament hangs a side, and melt flows down immediately and enters in the mold.

Claims (3)

1, a kind of cold crucible of induction melting furnace, the copper pipe (4) that comprises several one-tenth fence type combinations, its upper end outwards horizontal curvature is toroidal, fill with refractory material in spacing slit between every copper pipe (4) vertical component, it is characterized in that: ring-type upper water sleeve (3) is communicated with the outwardly-bent upper end mouth of pipe welding that is toroidal of copper pipe (4), the lower end of copper pipe (4) and lower water jacket (6) vertical welding are logical in succession, be welded with bottom ring (7) in the bottom of lower water jacket (6), lower water jacket (6) is communicated with (5) welding at the bottom of the crucible, the centre bore of (5) is provided with by annotating chock plug (8) at the bottom of crucible, annotate plug ring (9), the rising pouring device that crucible cushion block (10) and graphite support plug (11) are formed.

2, according to the described cold crucible of claim 1, it is characterized in that: the outer rim of upper water sleeve (3) is welded with two water nozzles (1), be welded with two dividing plates (12) in the inside of upper water sleeve (3), arbitrary therein dividing plate (12) is located to have slit (13) together with upper water sleeve.

3, according to the described cold crucible of claim 2, it is characterized in that: graphite support plug (11) is to have the hollow tube that the disconnected groove of V-arrangement vertically cracks, jack centre bore of (5) at the bottom of crucible, the upper end of annotating chock plug (8) is tapered, with notes plug ring (9) conical surface seal, sit up straight down and put in the hole slot of graphite support plug (11), notes plug rings (9) match to merge with crucible cushion block (10) and are pushed down by cushion block (10), and the lower end of annotating chock plug (8) and graphite support plug (11) is connected on the lower water jacket (6) with tungsten filament.

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