CN217166410U - Semi-solid rotary grinding extrusion forming equipment - Google Patents

Abstract

The utility model belongs to the technical field of mechanical equipment, a semi-solid rotary grinding extrusion forming device is disclosed, which comprises a smelting refining bag, wherein a first sealing cover is detachably connected on the smelting refining bag, an ultrasonic processing device is arranged on the first sealing cover, an electromagnetic stirring and heating device is arranged on the inner wall of the smelting refining bag, a high-purity graphite crucible is arranged in the smelting refining bag, a runner port is arranged at the bottom of the high-purity graphite crucible, a metal melt runner is arranged at the bottom of the smelting refining bag, and the metal melt runner is communicated with the runner port; the rotary grinding extrusion forming device is arranged at the lower side of the smelting refining ladle, and an inlet of the rotary grinding extrusion forming device is communicated with the metal melt runner; and the cooling and coiling device is arranged below the outlet of the rotary grinding extrusion forming device. The utility model discloses saved fuse-element transfer process, avoided the metal melt to pollute because of the fuse-element that production shifted and cause, refined crystalline phase tissue by a wide margin, improved the mechanical properties of product, reduced the manufacturing cost of enterprise, change in industrialization continuous production.

Description

Semi-solid rotary grinding extrusion forming equipment

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to semi-solid state grinds extrusion moulding equipment soon.

Background

The semi-solid forming is a new and advanced technological process, it means to fill the semi-solid blank into the extrusion cylinder, through the extrusion shaft pressurization, make the blank flow out of the extrusion die and solidify completely, the processing method to obtain long-size products with uniform section, it is one of the important forming technologies in the semi-solid metal material processing field, in the fields of automobile, communication, computer, etc., and the advanced fields of aviation, aerospace, national defense, etc., will have wide application prospects, will promote the industry to develop towards the direction of light weight, high performance, environment protection.

Compared with the conventional casting and hot extrusion, the semi-solid extrusion has small material deformation resistance, can extrude and form thin-wall profiled bars with complex shapes, and omits the procedures of ingot casting, homogenization treatment, preheating before extrusion and the like, so the semi-solid extrusion has the characteristics of short flow, stable filling, compact structure, high net forming and mechanical properties, energy consumption saving and low production cost.

In the existing semi-solid state extrusion technology, such as in the utility model patent ZL201910452467.2 and ZL201610194007.0, utilize the extrusion to make the blank change into superfine crystal/nanocrystalline, although the multi-thread groove that its adopted can improve production efficiency by a wide margin, but increase and deepen along with the increase of extrusion wheel groove, the friction shearing force weakens gradually, and because the friction shearing force that produces only concentrates on the blank top layer, make the inside tissue of blank unable high-efficient refining, and simultaneously, multi-thread groove preparation need match many metal runner and introduce the fuse-element, the fuse-element transfer in-process, not only can the oxidation inhale hydrogen, make the fuse-element quality difficult to guarantee, simultaneously still introduce unnecessary impurity extremely easily, therefore, make final off-the-shelf mechanical properties not high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a semi-solid state is ground extrusion moulding equipment soon to overcome the problem that exists among the above-mentioned prior art.

The technical scheme of the utility model is that:

a semi-solid rotary extrusion apparatus comprising:

the smelting refining package is detachably connected with a first sealing cover, an ultrasonic processing device is arranged on the first sealing cover, an electromagnetic stirring and heating device is arranged on the inner wall of the smelting refining package, a high-purity graphite crucible is sleeved in the smelting refining package, a runner port is formed in the bottom of the high-purity graphite crucible, a metal melt runner is formed in the bottom of the smelting refining package, and the metal melt runner is communicated with the runner port;

the rotary grinding extrusion forming device is arranged at the lower side of the smelting refining ladle, and an inlet of the rotary grinding extrusion forming device is communicated with the metal melt runner;

and the cooling and coiling device is arranged at the lower side of the outlet of the rotary grinding extrusion forming device and is used for cooling and coiling the formed product.

Preferably, the metal melt runner is provided with an electromagnetic valve for controlling the opening and closing of the metal melt runner, and the electromagnetic valve is used for controlling the melt flow in the high-purity graphite crucible.

Preferably, a filtering device is arranged on the metal melt runner.

Preferably, the filter device is a ceramic fiber filter plate.

Preferably, the high-purity graphite crucible is provided with a plurality of high-purity graphite crucibles, and the size and the specification of each high-purity graphite crucible are different.

Preferably, the rotary-grinding extrusion forming device comprises a cylinder, one end of the cylinder is fixedly connected with the outlet end of the smelting and refining pack in a sleeved mode, the other end of the cylinder is provided with a second sealing cover, and an extrusion die is arranged on the second sealing cover; wear to be equipped with the main shaft on the second closing cap, the one end of main shaft is connected with the output of reduction gear, the input of reduction gear is connected with the output of motor, the fixed extrusion lantern ring of grinding soon of other end suit of main shaft, grind soon and form between extrusion lantern ring and the barrel and grind the extrusion die cavity soon, grind the cross section of extrusion lantern ring soon and be the combination of cone and cylinder, the cone is located and keeps away from the one end of reduction gear, the surface of grinding the extrusion lantern ring soon is equipped with spiral shell screwing in rise's arch, bellied position is more close to smelt the concise package, its width and height are big more.

Preferably, a cooling water channel is arranged in the main shaft and is communicated with an external cooling water circulation system.

Preferably, a cooling system for cooling the semi-solid metal slurry in the rotary grinding extrusion cavity is arranged in the cylinder.

Preferably, the extrusion die has a plurality of dies, each die having a different shape and size.

Compared with the prior art, the utility model provides a pair of semi-solid-state is ground extrusion moulding equipment soon is particularly useful for the preparation of non ferrous alloys such as the pure alloy that easily oxidizes, easily burns out, dendrite are flourishing, aluminum alloy, magnesium alloy, and its beneficial effect is:

1. the utility model discloses to smelt, refining equipment unites two into one for each process links up closely, adopts electromagnetic stirring, the compound fuse-element of supersound to handle, and matches ceramic fiber board and utilize fuse-element self gravity to filter the fuse-element. Compared with the conventional melt treatment, the utility model realizes the high-purity hybridization-free high-efficiency on-line preparation of the semi-solid slurry, greatly improves the melt treatment efficiency, and is efficiently combined with the rotary grinding extrusion forming equipment, thereby saving the melt transfer process and avoiding the melt pollution caused by the production transfer of the metal melt;

2. the utility model increases the contact area between the semi-solid metal slurry and the screw thread on the outer surface of the rotary grinding extrusion lantern ring and the cylinder body in the rotary grinding extrusion process, has stronger strain in the deformation process, can effectively and simultaneously crush developed dendritic crystals and thick second phases on the surface layer and inside of the semi-solid metal slurry, greatly refines the organization and improves the mechanical property;

3. utilize the utility model discloses the preparation flow that takes shape is short, and each process links up closely, through changing the mould, prepares the product of multiple specification simultaneously under the condition that does not increase equipment quantity, reduces the required area of taking up an area of equipment, and energy saving and emission reduction has reduced the manufacturing cost of enterprise by a wide margin, changes in industrialization continuous production, and the practicality is high, is worth promoting.

Drawings

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

FIG. 2 is a schematic diagram of the metallographic structure of an Al-8Mg alloy product prepared by the present invention;

FIG. 3 is a schematic diagram of metallographic structure of Al-8Mg alloy products prepared by the present invention.

Reference numerals:

1. a first cover; 2. an ultrasonic processing device; 3. smelting a refining ladle; 4. a high purity graphite crucible; 5. an electromagnetic stirring heating device; 6. a molten metal runner; 7. an electromagnetic valve; 8. a ceramic fiber filter plate; 9. a main shaft; 10. a cooling water passage; 11. a motor; 12. a speed reducer; 13. spinning and rolling the extrusion lantern ring; 14. a protrusion; 15. a barrel; 16. a cooling system; 17. a second cover; 18. extruding the die; 19. a product guide wheel; 20. a cooling water tank; 21. producing a product; 22. a coiling machine.

Detailed Description

An embodiment of the present invention will be described in detail with reference to fig. 1 to 3 of the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.

Example 1

As shown in figure 1, the utility model provides a semi-solid state rotary grinding extrusion molding device, including smelting device, rotary grinding extrusion molding device and cooling and coiling apparatus.

The smelting device is used for refining raw materials, the rotary grinding extrusion forming device is used for forming the refined raw materials, the rotary grinding extrusion forming device is arranged on the lower side of the smelting device, an outlet of the smelting device is communicated and hermetically connected with an inlet of the rotary grinding extrusion forming device, and oxidation, burning loss and hydrogen absorption of metal melt in the smelting, refining and rotary grinding extrusion forming processes are avoided. The cooling and coiling device is used for cooling and coiling the formed product and is arranged at the lower side of an outlet of the rotary grinding extrusion forming device.

Concretely, it includes first closing cap 1 to smelt the device, smelt concise package 3, filter equipment, ultrasonic treatment device 2, electromagnetic stirring heating device 5, wherein, smelt the top lock of concise package 3 and have first closing cap 1, be fixed with ultrasonic treatment device 2 through connecting bolt in the intermediate position of first closing cap 1, it is provided with electromagnetic stirring heating device 5 on the inner wall of concise package 3 to smelt, electromagnetic stirring heating device 5 is also known as magnetic stirring electric jacket, be used for smelting heat retaining to the metal material and carry out electromagnetic stirring to the fuse-element simultaneously and handle, magnetic stirring electric jacket reliable operation, and is easy and simple to handle, it is continuously adjustable to have heating power, heating power shows directly perceived, can conveniently observe and control heating state, stirring rotational speed continuously adjustable's characteristics, it still has two-way stirring function, can stir fast and reach the purpose of quick mixing.

The melting refining bag 3 is internally detachably provided with a high-purity graphite crucible 4, the bottom of the melting refining bag 3 is provided with a metal melt runner 6, the metal melt runner 6 is matched with a runner port arranged at the bottom of the high-purity graphite crucible 4, and the metal melt runner 6 is communicated with an inlet of a rotary grinding extrusion forming device.

In particular, a filter device is arranged on the metal melt channel 6, the filter device preferably being a ceramic fiber filter plate 8.

Specifically, the high-purity graphite crucible 4 is provided with a plurality of replaceable high-purity graphite crucibles 4, and each high-purity graphite crucible 4 has different size and specification and can accommodate about 50 kg-1000 kg of metal melt. In use, the high-purity graphite crucible 4 with a proper size can be selected according to the amount of the metal melt.

Wherein, the metal melt runner 6 is also provided with an electromagnetic valve 7 for controlling the opening and closing of the metal melt runner 6, and the electromagnetic valve 7 is used for controlling the melt flow in the high-purity graphite crucible 4.

Specifically, the rotary-milling extrusion forming device comprises a main shaft 9, a rotary-milling extrusion lantern ring 13, a cylinder body 15 and a second sealing cover 17, wherein one end of the cylinder body 15 is fixedly connected with the outlet end of the smelting refining bag 3 in a sleeved mode, the second sealing cover 17 is arranged at the other end of the cylinder body 15, and an extrusion die 18 is arranged on the second sealing cover 17.

The extrusion die 18 is provided with a plurality of extrusion dies, the sizes and specifications of the extrusion dies are different, and the extrusion die 18 can be various extrusion dies such as solid rods, bars, wires, sections and pipes so as to be convenient to replace according to different use conditions.

The second closing cap 17 is provided with a main shaft 9 in a penetrating mode, one end of the main shaft 9 is connected with the output end of the speed reducer 12, the input end of the speed reducer 12 is connected with the output end of the motor 11, the other end of the main shaft 9 is sleeved with a fixed rotary-grinding extrusion lantern ring 13, and a rotary-grinding extrusion cavity is formed between the rotary-grinding extrusion lantern ring 13 and the barrel 15.

The motor 11 and the speed reducer 12 are arranged on the main shaft 9, and when the device is started, the motor 11 drives the speed reducer 12 to rotate, so that the main shaft 9 is driven to rotate.

Wherein, be equipped with cooling water passageway 10 in main shaft 9, cooling water passageway 10 communicates with the cooling water circulation system of peripheral hardware, can cool off and revolve and grind extrusion lantern ring 13, and then cool semi-solid metal thick liquids.

Wherein, a cooling system 16 for cooling the semi-solid metal slurry in the rotary-milling extrusion cavity is arranged in the cylinder 15, and the semi-solid metal slurry in the rotary-milling extrusion cavity can be cooled.

In order to utilize gravity conveniently, the arrangement heights of the smelting device, the rotary grinding extrusion forming device and the cooling and coiling device can be gradually reduced in sequence when the device is specifically arranged.

Specifically, the cross section of the rotary-grinding extrusion lantern ring 13 is a combination of a cone and a cylinder, the upper portion is a cone, the lower portion is a cylinder, the diameter is 500 mm-2000 mm, the cone is located at one end far away from the speed reducer 12, a spirally-rising bulge 14 is arranged on the outer surface of the rotary-grinding extrusion lantern ring 13, the bulge 14 integrally forms a structure similar to a thread, and the position of the bulge 14 is closer to the smelting and refining pack 3, and the width and the height of the bulge are larger.

As the improvement of the technical proposal, a product guide wheel 19 is arranged between the rotary grinding extrusion forming device and the cooling and coiling device, and the number of the product guide wheel 19 and the cooling and coiling device is matched with the number of the extrusion dies 18. The cooling and winding apparatus includes a cooling water tank 20 and a winding machine 22 disposed at a side of the cooling water tank 20.

During the use, metal melt utilizes gravity to pass through metal melt runner 6 and ceramic fiber filter 8 after refining, gets into and grinds extrusion die cavity soon, grinds extrusion die cavity soon and cools off solidification gradually and accomplish and grind extrusion deformation soon, utilizes the friction that grinds extrusion lantern ring 13 and barrel 15 production soon to drag the metal and pass through extrusion die 18 extrusion moulding, after through cooling in cooling water tank 20 with product 21 afterwards, utilizes recoiling machine 22 to collect the lapping.

Based on the device, the utility model also provides a semisolid state grinds extrusion moulding method soon, and the concrete parameter who involves is:

the capacity of the high-purity graphite crucible 4 is 50kg, the rotating speed of the rotary grinding extrusion lantern ring 13 is 5r/min, two extrusion dies 18 and matched product guide wheels 19, a cooling water tank 20 and a coiling machine 22 which are symmetrically arranged are adopted, and the extrusion dies 18 are solid rod dies with the diameter of 10 mm.

Specifically, the method comprises the following steps:

smelting and refining: placing a prepared Al-8Mg (wt%) alloy ingot into a high-purity graphite crucible 4 in a smelting and refining package 3, opening an electromagnetic stirring and heating device 5, adjusting the temperature to 750 ℃ for smelting, performing heat preservation and electromagnetic stirring treatment on a molten metal, and opening an ultrasonic treatment device 2 on a first sealing cover 1 after the alloy ingot is completely molten to refine the melt;

and (3) carrying out rotary grinding and extrusion forming: after the refining of the alloy melt is finished, the electromagnetic valve 7 at the metal melt runner 6 is opened, the metal melt obtained by refining flows into the rotary grinding extrusion cavity after being filtered by the metal melt runner 6 and the ceramic fiber filter plate 8 under the action of self weight, gradually becomes high-quality semi-solid slurry under the action of a cooling system in the cylinder 15, a motor is started to rotate the main shaft 9, the semi-solid metal slurry is dragged to move downwards by the rotation of the protrusions on the outer surface of the rotary grinding extrusion lantern ring 13, because the cross section of the rotary grinding extrusion lantern ring 13 is a combination of a cone and a cylinder, the upper part is the cone, the lower part is the cylinder, and the farther away from the melt refining ladle 3 the position of the protrusion 14 on the outer periphery of the spinning and crushing collar 13 is from, the smaller the width and height, the more the semi-solid slurry is rolled and cooled during the process, and the friction force generated by the metal slurry and the cylinder 15 is used to pull the metal to extrude and form through 2 solid rod extrusion dies 18.

Cooling and coiling: the solid extruded rod material having a diameter of 10mm obtained by extrusion molding is adjusted in the advancing direction by the product guide wheels 19 between each of the self-rotating extrusion molding devices and the cooling and winding device, and then cooled by the respective cooling water tanks 20, and finally wound into a roll by the winding machine 22.

The metallographic structure of the product that utilizes above-mentioned method to obtain is shown in figure 2, the current diameter that adopts traditional continuous rheology extrusion forming method to prepare as shown in figure 3 of contrast be 10mm the rod metallographic structure with the utility model discloses the rod of preparation, the utility model discloses the Al-8Mg (wt%) alloy product crystalline grain of preparation is more tiny even isometric crystal, and does not have thick dendrite and second phase, has improved the mechanical properties of product by a wide margin, and the product surface of preparing is bright and clean, and inside no oxidation, pore mingled with.

Compared with the prior art, the utility model provides a pair of semi-solid-state grinds extrusion moulding equipment soon will smelt, refining equipment unites two into one, adopts electromagnetic stirring, the compound fuse-element of supersound to handle to match ceramic fiber board and utilize fuse-element self gravity to filter the fuse-element. Compared with the conventional melt treatment, the utility model realizes the high-purity hybridization-free high-efficiency on-line preparation of the semi-solid slurry, greatly improves the melt treatment efficiency, and is efficiently combined with the rotary grinding extrusion forming equipment, thereby saving the melt transfer process and avoiding the melt pollution caused by the production transfer of the metal melt; in addition, the utility model increases the contact area between the semi-solid metal slurry and the screw thread on the outer surface of the rotary-grinding extrusion lantern ring and the cylinder body in the rotary-grinding extrusion process, has stronger strain in the deformation process, can effectively and simultaneously crush developed dendritic crystals and thick second phases on the surface layer and inside of the semi-solid metal slurry, greatly refines the structure and improves the mechanical property; utilize the utility model discloses the preparation flow that takes shape is short, and each process links up closely, is particularly useful for easy oxidation, easy scaling loss, the preparation of the flourishing pure alloy of dendrite, aluminum alloy, the nonferrous alloy extrusion material of magnesium alloy, and the mould is changed to the accessible simultaneously, prepares the product of multiple specification simultaneously under the condition that does not increase equipment quantity, reduces the required area of equipment, and energy saving and emission reduction has reduced the manufacturing cost of enterprise by a wide margin, changes in industrialization continuous production, and the practicality is high, is worth promoting.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the embodiments, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims (9)

1. A semi-solid rotary milling extrusion molding apparatus, comprising:

the smelting and refining ladle (3) is detachably connected with a first sealing cover (1), an ultrasonic treatment device (2) is arranged on the first sealing cover (1), an electromagnetic stirring and heating device (5) is arranged on the inner wall of the smelting and refining ladle (3), a high-purity graphite crucible (4) is arranged in the smelting and refining ladle (3) in a sleeved mode, a runner port is formed in the bottom of the high-purity graphite crucible (4), a metal melt runner (6) is arranged at the bottom of the smelting and refining ladle (3), and the metal melt runner (6) is communicated with the runner port;

the rotary grinding extrusion forming device is arranged at the lower side of the smelting refining ladle (3), and an inlet of the rotary grinding extrusion forming device is communicated with the molten metal runner (6);

and the cooling and coiling device is arranged at the lower side of the outlet of the rotary grinding extrusion forming device and is used for cooling and coiling the formed product.

2. A semi-solid state spinning and rolling extrusion molding apparatus as claimed in claim 1, wherein the molten metal flow channel (6) is provided with a solenoid valve (7) for controlling the opening and closing of the molten metal flow channel (6), and the solenoid valve (7) is used for controlling the flow rate of the melt in the high purity graphite crucible (4).

3. A semi-solid state spin-milling extrusion molding apparatus according to claim 2, wherein the molten metal flow path (6) is provided with a filtering means.

4. A semi-solid state spin-milling extrusion apparatus according to claim 3 wherein the filter means is a ceramic fibre filter plate (8).

5. A semi-solid state spinning extrusion molding apparatus as set forth in claim 1, wherein said high purity graphite crucible (4) is plural in number, each having a different size.

6. A semi-solid state spinning and rolling extrusion forming device according to claim 1, wherein the spinning and rolling extrusion forming device comprises a cylinder (15), one end of the cylinder (15) is fixedly connected with the outlet end of the smelting and refining pack (3) in a sleeved mode, the other end of the cylinder (15) is provided with a second sealing cover (17), and an extrusion die (18) is arranged on the second sealing cover (17); wear to be equipped with main shaft (9) on second closing cap (17), the one end of main shaft (9) is connected with the output of reduction gear (12), the input of reduction gear (12) is connected with the output of motor (11), the other end suit of main shaft (9) is fixed to grind the extrusion lantern ring (13) soon, it grinds extrusion die cavity soon to form between extrusion lantern ring (13) and barrel (15) to grind soon, the cross section of grinding the extrusion lantern ring (13) soon is the combination of cone and cylinder, the cone is located and keeps away from the one end of reduction gear (12), the surface of grinding the extrusion lantern ring (13) soon is equipped with spiral ascending arch (14), the position of arch (14) is close to more smelt concise package (3), its width and height are big more.

7. A semi-solid state spinning and extrusion molding apparatus according to claim 6, wherein a cooling water passage (10) is provided in the main shaft (9), and the cooling water passage (10) is communicated with an external cooling water circulation system.

8. A semi-solid state spin-milling extrusion molding apparatus according to claim 6, wherein a cooling system (16) for cooling the semi-solid metal slurry in the spin-milling extrusion cavity is provided in the cylinder (15).

9. A semi-solid state rotary extrusion apparatus as claimed in claim 6, wherein said extrusion die (18) is provided in a plurality of sizes and shapes each having a different size and shape.

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