Aluminum Alloy Material Smelting Device

Abstract

The disclosure discloses an aluminum alloy material smelting device, comprising a furnace, a cutter packing device with a stirring shaft, a packing basket, a cutter-type stirring head, the stirring shaft connected with the packing basket, the bottom of the packing basket connected with a cutter-type stirring head, the cutter-type stirring head comprising a plurality of stirring blades, one end of the stirring blades connected with the bottom of the packing basket, the other end connected with each other on the central axis of the packing basket, and the side wall of the packing basket provided with a liquid passage hole to form liquid exchange with the solution outside the packing basket; the rotation of the cutter-type stirring head forming a solution vortex to accelerate the diffusion of added elements, and the vortex only formed under the stirring head, which will not damage the covering film formed on the surface of aluminum alloy, effectively prevent the scum on the surface from being involved in the solution again, thereby ensuring the consistency of the properties and chemical composition of the prepared aluminum alloy material, and reducing the influence of aluminum alloy scum on the solution.

Claims

1. An aluminum alloy material smelting device, comprising a furnace, a cutter packing device, wherein the cutter-type packing device comprises a stirring shaft, a packing basket, a cutter-type stirring head, the stirring shaft connected with the packing basket, the bottom of the packing basket connected with a cutter-type stirring head, the cutter-type stirring head comprising a plurality of stirring blades, one end of the stirring blades connected with the bottom of the packing basket, the other end connected with each other on the central axis of the packing basket, and the side wall of the packing basket provided with a liquid through hole to form liquid exchange with the solution outside the packing basket.

2. An aluminum alloy material smelting device according to claim 1, wherein the stirring blade is a fan-shaped stirring blade with a central angle of 90 degrees.

3. An aluminum alloy material smelting device according to claim 2, wherein the fan-shaped stirring blades are four, and each adjacent stirring blade is vertically connected with each other.

4. An aluminum alloy material smelting device according to claim 1, wherein the cutter-type packing device further comprises a partition plate dividing the packing basket into a plurality of packing bins.

5. An aluminum alloy material smelting device according to claim 4, wherein the partition plates are uniformly arranged in four, and the packing baskets are divided into four packing bins.

6. An aluminum alloy material smelting device according to claim 1, wherein the cutter-type packing device is made of iron and steel material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a structural schematic diagram of the aluminum alloy material smelting device of the present disclosure.

[0015] FIG. 2 is a structural schematic diagram of a cutter-type packing stirring device in an aluminum alloy material smelting device of the present disclosure.

[0016] In the picture: 1—furnace, 2—cutter-type packing device, 3—stirring shaft, 4—partition plate, 5—packing basket, 6—liquid passage hole, 7—cutter-type stirring head, 8—stirring blade, 9—packing bin.

DETAILED DESCRIPTION

[0017] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0018] A clear and complete description of the technical aspects of the present disclosure will be given below with reference to the accompanying drawings and in conjunction with embodiments which will be apparent to us that the described embodiments are only part of and not all of the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts are within the scope of protection of the present disclosure.

[0019] As shown in FIGS. 1-2, a smelting device for alloy material comprises a smelting furnace 1 and a cutter-type packing device 2. The cutter-type packing device 2 comprises a stirring shaft 3, a packing basket 5, a cutter-type stirring head 6, a partition plate 4, a packing bin 9 and a liquid passage hole 6; the stirring shaft 3 is connected with the packing basket 5, and the bottom of the packing basket 5 is connected with a cutter-type stirring head 6. The cutter-type stirring head 6 comprises a plurality of fan-shaped stirring blades 8 with a central angle of 90 degrees. In this embodiment, there are four stirring blades 8, one side of the four stirring blades 8 is fixed at the bottom of the packing basket 5, and the other side is vertically connected with each other on the central axis of the packing basket 5 to form a cutter-type stirring head 6; the stirring shaft 3 extends the packing basket 5 and the cutter-type stirring head 6 into the smelting furnace 1 and enters the aluminum alloy melt. In order to ensure uniform diffusion in the stirring process, the packing basket 5 is preferably a cylinder, and of course it can also be of other structures that can meet the packing requirements; in order to uniformly place the master alloy, a plurality of partition plates 4 are arranged in the packing basket 5 according to the amount of metal blocks and master alloy to be added, and the partition plates 4 divide the packing basket 5 into a plurality of packing bins 9, so as to ensure the consistency of alloy melting and avoid the wear of stirring apparatus caused by the deviation of the master alloy to the same side due to centrifugation. In this embodiment, as a preferred option, the partition plates 4 are four, a partition plate 4 uniformly divides the packing basket 5 into four packing bins 9. The outer wall of the packing basket 5 and the bottom of the packing basket 5 are provided with a liquid passage hole 6, used for ensuring the flow exchange of solution inside and outside the packing basket 5. The aluminum alloy melt is injected into the packing bin 9 through the liquid passage hole 6 to dissolve the added master alloy. The cutter-type stirring head 6 rotates and stirs to form a vortex to accelerate the diffusion of the added element solution through the liquid passage hole 6. The flow direction of the aluminum liquid is parallel to the stirring shaft 3, and the aluminum liquid is pushed by the stirring blade 8. The cutter-type stirring head 6 can make the aluminum liquid flow downward, and then turn upward when encountering the bottom surface of the container to form an upper and lower circulating flow. In order to avoid the influence of long-term use of high temperature on the stirring head and the packing basket 5, both the stirring head and the packing basket 5 are made of iron and steel materials.

[0020] When the present disclosure is actually used, first, the metal block of the desired master alloy is uniformly added to the packing bin 9, the packing basket 5 is sunk into the aluminum solution along with the stirring head. The aluminum solution is submerged into the packing bin 9 through the upper surface of the packing basket 5 and injected into the packing bin 9 through the side wall of the packing basket 5 and the liquid passage hole 6 at the bottom. The added metal block is melted slowly, while the cutter-type stirring head rotates and stirs. The cutter-type stirring head 6 rotates and stirs to form a vortex to accelerate the diffusion of the added element solution through the liquid passage hole 6. Aluminum alloy solution easily reacts with oxygen and water vapor in the air to form a dense oxide film on the surface of molten aluminum during the melting process, so as to prevent further oxidation of molten aluminum. Due to the cutter head design, the stirring head moves axially and radially under the action of the impeller rotating at high speed. The bottom of the packing basket 5 acts as a baffle plate to prevent the liquid from moving axially upward. When the axial partial velocity makes the liquid flow downward along the axial direction, by the time it flows to the bottom of the furnace, it turns back to the rotary propeller along the furnace wall. When the radial partial velocity makes the liquid flow along the circumferential direction, it is divided into upward flow and downward flow by the time of encountering the furnace wall, and the radial downward part of the liquid meets the liquid generated by the axial return to the furnace wall to form turbulence. However, the radial upward part of the liquid moves upward along the furnace wall in a steady flow, which will not produce spinning phenomenon, so it will not destroy the dense oxide film formed on the surface, and will quickly drive the slag inclusion of molten aluminum to gather upward, so as to achieve rapid slag removal.

[0021] The vortex is only formed under the stirring head, and will not damage the covering film formed on the aluminum alloy surface, effectively preventing the scum on the surface from being involved in the solution again. The flow direction of the aluminum liquid is parallel to the stirring shaft 3, the aluminum liquid is pushed by the stirring blade 8, and the cutter-type stirring head 6 can make the aluminum liquid flow downward, and then turn upward when encountering the bottom surface of the container to form an upper and lower circulating flow. Due to its own rotation, mechanical energy is transferred to liquid, resulting in forced convection of liquid in the furnace, therefore the master alloy in the packing bin 9 is subjected to centrifugal force, to fully mix the melted liquid droplets with the aluminum solution diffusing outward through the liquid passage hole 6. Meanwhile the liquid flow formed by the rotation of the stirring head will quickly circulate the mixed solution in the packing basket 5 and its vicinity until it is dispersed to other positions, resulting in the formation of alloy concentration gradient in the vicinity of the packing basket 5, which in turn promotes the faster melting of the master alloy block in the packing basket 5 to form the concentration balance of the mixed solution. At the same time, the flow velocity of the mixed liquid thrown out by the packing basket 5 is different from that driven by the stirring head, so that the liquid at the junction of the two is strongly shearing. In addition, the aluminum solution on the top of the packing basket 5 quickly replenishes the gap left by the mixed solution passing through the liquid hole 6 by centrifugation, and continues to scour the master alloy until all the master alloy blocks in the packing bin 9 are melted to the aluminum solution and diffused uniformly.

[0022] Compared with the prior art, the present disclosure has the advantages that the rotation of the cutter-type stirring head 6 forms a solution vortex to accelerate the diffusion of added elements, and the vortex is only formed under the stirring head, which will not damage the covering film formed on the surface of aluminum alloy, effectively prevent the scum on the surface from being involved in the solution again, thereby ensuring the consistency of the properties and chemical composition of the prepared aluminum alloy material, and reducing the influence of aluminum alloy scum on the solution.

[0023] Although embodiments of the disclosure have been shown and described, it will be understood to those of ordinary skill in the art that various variations, changes, substitutions and modifications may be made to these embodiments without departing from the principle and spirit of the disclosure, the scope of which is defined by the appended claims and their equivalents.