CN212747341U

CN212747341U - Smelting atmosphere protection furnace cover of induction furnace

Info

Publication number: CN212747341U
Application number: CN202021417167.5U
Authority: CN
Inventors: 贾明; 陈道华; 王晓蓉
Original assignee: Metalink Special Alloys Corp
Current assignee: Metalink Special Alloys Corp
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-03-19
Anticipated expiration: 2030-07-17

Abstract

The utility model relates to a bell, especially an induction furnace smelting atmosphere protection bell belongs to alloy equipment technical field. The utility model discloses a structure includes the lid of latch closure at the response fire door, the lid surface has the through-hole, the charging means is connected to the through-hole, the inside insulating layer that is equipped with of lid, the pipeline that has the linkage protection gas on the lid. The utility model discloses a structure is ingenious, and convenient to use is superior to traditional intubate protection effect in the stove, conveniently adds alloy element material simultaneously. The method is used for realizing a closed inert atmosphere environment for the smelting furnace, and reduces the oxidation, the nitridation and the burning loss of the alloy.

Description

Smelting atmosphere protection furnace cover of induction furnace

Technical Field

The utility model relates to a bell, especially an induction furnace smelting atmosphere protection bell belongs to alloy equipment technical field.

Background

When the common induction furnace is used for smelting alloys which contain magnesium and are easy to oxidize and burn, the alloy elements are seriously burnt, a large amount of dust is generated, and even the finally needed alloys cannot be obtained due to severe oxidation. The inert atmosphere protection is adopted, so that partial air can be isolated, a relatively closed inert atmosphere environment is formed, and the oxidation, the nitridation and the burning loss of the alloy are reduced. However, the existing induction furnace cannot realize a closed inert atmosphere environment and cannot play a role in protection.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems in the prior art, the protective furnace cover for the smelting atmosphere of the induction furnace is provided, and the protective atmosphere covers and protects the alloy during smelting.

In order to achieve the purpose, the utility model discloses an induction furnace smelting atmosphere protection bell, including the lid of latch closure at the induction furnace mouth, the lid surface has the through-hole, the charging means is connected to the through-hole, the inside insulating layer that is equipped with of lid, the pipeline of connecting protective gas has on the lid. The through hole on the cover body can be used as an observation hole to observe the smelting state at any time in the smelting process, and can also be used for feeding materials into the furnace through a feeder.

Furthermore, the feeder is a funnel, and a furnace cover does not need to be opened when alloy elements need to be added, so that the alloy elements are conveniently added.

The heat-insulating layer is filled with aluminum silicate heat-insulating cotton, and is a heat-insulating and breathable material, so that the possibility of deformation of the main structure due to overheating of the structure caused by radiation heat can be reduced, and meanwhile, the heat-insulating layer has breathability, so that protective gas is dispersed uniformly, and the gas coverage protection area is increased.

The heat insulation layer faces the panel in the furnace, and circumferential gas diversion channels are uniformly distributed on the panel. The gas diversion channel is made of stainless steel strips, partitions the gas flow direction, and reinforces the main structure to avoid deformation.

Radial vent holes are uniformly distributed on the panel to form diversion to promote the protective atmosphere to cover uniformly. Inert gas argon is introduced, and the argon has a specific gravity greater than that of air, so that the protective atmosphere can be used for covering and protecting the alloy during smelting.

The utility model discloses a structure is ingenious, and convenient to use is superior to traditional intubate protection effect in the stove, conveniently adds alloy element material simultaneously. The method is used for realizing a closed inert atmosphere environment for the smelting furnace, and reduces the oxidation, the nitridation and the burning loss of the alloy.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic view of the structure of each plate in the direction B-B of FIG. 1.

FIG. 3 is a schematic view of the structure of each hole in the direction B-B of FIG. 1.

Detailed Description

Example one

The structure of the protective furnace cover for the smelting atmosphere of the induction furnace in the embodiment is shown in figures 1-3, and comprises a cover body 1 which is annularly buckled at the opening of the induction furnace, wherein the surface of the cover body is provided with a through hole 2, the through hole 2 is connected with a hopper 3 serving as a feeder, and the furnace cover does not need to be opened when alloy elements need to be added, so that the alloy elements are conveniently added. The inside insulating layer that is equipped with of lid 1, aluminium silicate heat preservation cotton 4 is filled to the insulating layer, and this is thermal-insulated ventilative material, reducible major structure causes the overheated and the possibility of warping of structure because of radiant heat, and this insulating layer has the gas permeability simultaneously, makes protective gas disperse evenly, increases the gas coverage protection area. The cover 1 has a pipe 5 for connecting a protective gas. The through hole 2 on the cover body 1 can be used as an observation hole to observe the smelting state at any time in the smelting process, and can also be used for feeding materials into the furnace through a feeder. The circumferential gas diversion channels 6 are uniformly distributed on the panel of the heat insulation layer facing the furnace. The gas guide channel 6 is made of stainless steel strips, partitions the gas flow direction, and reinforces the main structure to avoid deformation. Radial vent holes 7 are uniformly distributed on the panel to form diversion to promote the protective atmosphere to cover uniformly. Inert gas argon is introduced, and the argon has a specific gravity greater than that of air, so that the protective atmosphere can be used for covering and protecting the alloy during smelting.

When magnesium-containing and other easily-oxidized alloys are smelted, furnace burden is added according to normal process requirements, then an atmosphere protection furnace cover is covered on a furnace opening, and the periphery of the furnace cover is tightly plugged by a flexible aluminum silicate refractory material, so that the tightness of the furnace cover and a crucible is ensured as much as possible.

Argon is connected through a vent hole of an atmosphere protection furnace cover, argon is conveyed into a crucible of the induction furnace, and electricity is supplied to melt the argon according to a normal smelting process.

And in the melting process, an observation hole can be opened to observe the melting condition of the alloy, after the alloy is basically melted down, the raw materials to be added can be continuously added through a feeding hole, after all the raw materials are added and alloyed, according to a normal process, an atmosphere protection furnace cover is removed, an ingot is cast, and the working flow is completed.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The utility model provides an induction furnace smelting atmosphere protection bell, includes the lid of latch closure at induction furnace mouth, its characterized in that: the cover body surface has the through-hole, the through-hole is connected the charging means, the inside insulating layer that is equipped with of cover body, the pipeline that has the connection protective gas on the cover body.

2. An induction furnace smelting atmosphere protecting furnace cover as claimed in claim 1, wherein: the feeder is a funnel.

3. An induction furnace smelting atmosphere protecting furnace cover as claimed in claim 1, wherein: the heat insulation layer is filled with aluminum silicate heat insulation cotton.

4. An induction furnace smelting atmosphere protecting furnace cover as claimed in claim 3, wherein: the heat insulation layer faces the panel in the furnace, and circumferential gas diversion channels are uniformly distributed on the panel.

5. An induction furnace smelting atmosphere protecting furnace cover as claimed in claim 4, wherein: the gas guide channel is made of a stainless steel band.

6. An induction furnace smelting atmosphere protecting furnace cover as claimed in claim 3, wherein: radial vent holes are uniformly distributed on the panel of the heat insulation layer facing the furnace.