Metal melt degassing device
By using a pressurized airflow inlet pipe and a heating device in the aluminum melt degassing device, the problems of complex structure and high failure rate of existing devices have been solved, achieving efficient degassing and the production of pure molten metal, and reducing costs.
Patent Information
- Application Number
- CN202520338661.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing aluminum liquid degassing devices have complex structures and many components, resulting in high costs and a high susceptibility to malfunctions.
Inert gas is introduced into the molten metal through a pressurized gas inlet pipe and output through a gas outlet section. The pressurized gas drives the flow of the molten metal. Combined with a heating device and a slag removal plate, impurities are floated and degassed. The device has a simple structure and few components.
It achieves efficient degassing, obtains pure and uniform molten metal, reduces production costs and the probability of failure, and improves the quality of metal products.
Smart Images
Figure CN223852709U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of metal melt degassing equipment design, specifically relates to a kind of metal melt degassing device. BACKGROUND
[0002] Aluminum alloy has the advantages of small density and high strength, which can be further processed into high-value components. It is also an important lightweight structural material and an important choice for automotive lightweight materials. Therefore, in industrial production, during aluminum alloy smelting, how to realize melt purification is the key to ensure the quality of alloy materials.
[0003] In order to ensure the quality of aluminum liquid, hydrogen and non-metallic inclusions doped in the aluminum liquid need to be removed, at which time an aluminum liquid degassing device needs to be used. The traditional aluminum liquid degassing device includes a support, a rotor, an impeller, a motor, a hydraulic or pneumatic mechanism, an electric drive mechanism, etc. The structure is relatively complex, the cost is high, and faults are prone to occur. INVENTION CONTENTS
[0004] Therefore, the utility model provides a kind of metal melt degassing device, which can overcome the technical problems of complex structure, more components, high cost and easy faults of metal melt degassing device in related technologies.
[0005] To solve the above problems, the utility model provides a kind of metal melt degassing device, including pressure gas flow introduction pipe, the pressure gas flow introduction pipe includes the gas flow introduction section and the gas flow output section in communication, the inlet end of the gas flow introduction section is used for controllable communication with external pressure source, a plurality of gas outlets are formed on the gas flow output section, and the pressure gas flow is inert gas.
[0006] In some embodiments, the gas flow introduction section is a stainless steel pipe, the gas flow output section is a graphite pipe, and / or the inert gas is argon.
[0007] In some embodiments, the graphite pipe is threadedly connected between the stainless steel pipe.
[0008] In some embodiments, the gas flow output section has regions on its radially opposite sides, and each gas outlet is in the region on the two sides; and / or the diameter of the gas outlet is 3-5mm.
[0009] In some embodiments, the pressure gas flow introduction pipe further includes a necked section connected between the gas flow introduction section and the gas flow output section.
[0010] In some embodiments, the metal melt degassing device further includes a heating device for heating the pressure gas flow flowing in the gas flow introduction section. In some embodiments, the metal melt degassing device further includes a heating device for heating the pressure gas flow flowing in the gas flow introduction section.
[0011] In some embodiments, the heating device comprises a resistance heating element or an electromagnetic heater spirally wound on the outer peripheral wall of the gas flow introduction section; and / or, the metal melt is an aluminum alloy melt, and the heating device is capable of heating the pressure gas flow to 500-900 DEG C; and / or, the heating device extends along the axial length of the gas flow introduction section by 100-150 mm.
[0012] In some embodiments, a slag removal disc is connected to one end of the gas flow output section away from the gas flow introduction section, and the slag removal disc extends along the radial direction of the gas flow output section and protrudes from the outer peripheral wall of the gas flow output section.
[0013] In some embodiments, a plurality of liquid falling holes are formed on the slag removal disc, and each of the liquid falling holes is arranged in multiple circles along the circumferential direction of the gas flow output section; and / or, the slag removal disc is a graphite disc.
[0014] In some embodiments, the diameter of the liquid falling hole is 10-15 mm.
[0015] The metal melt degassing device provided by the utility model has the following beneficial effects:
[0016] The metal melt degassing device adopts a pressure gas flow introduction pipe to introduce inert gas with a certain pressure from outside into the metal melt through the gas flow output section, and the pressure gas can drive the metal melt in contact with it to flow, so that the metal melt can realize the degassing purpose in the flowing process, and the suspended particulate matter and other impurities in the lower layer of the metal melt can be stirred to float to the upper liquid surface of the metal melt, so that pure and uniform metal melt is obtained, thereby meeting the production requirements of high-quality metal products. Meanwhile, the degassing device in the utility model has simple structure, few components, can significantly reduce the production cost, and can also reduce the probability of failure. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. The drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be obtained according to the provided drawings without creative labor.
[0018] Fig. 1 is the three-dimensional structure schematic diagram of the metal melt degassing device in the embodiment of the utility model under one visual angle;
[0019] Fig. 2 is the three-dimensional structure schematic diagram of the metal melt degassing device in the embodiment of the utility model under another visual angle.
[0020] Reference signs are:
[0021] 1, pressure gas flow introduction pipe; 11, gas flow introduction section; 12, gas flow output section; 121, gas outlet hole; 13, necked section; 2, heating device; 3, slag removal disc; 31, liquid outlet hole. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without making the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.
[0024] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative description used herein is interpreted accordingly.
[0025] In addition, it should be noted that the use of the terms "first", "second" and the like to qualify parts is merely intended to facilitate the distinction of the corresponding parts, and in the absence of further declaration, the above terms do not have a special meaning, and therefore cannot be understood as limiting the scope of protection of the utility model.
[0026] Referring to Figs. 1-2 As shown in the drawings, according to the embodiment of the utility model, a metal melt degassing device is provided, which comprises a pressure gas flow introduction pipe 1, the pressure gas flow introduction pipe 1 comprises a gas flow introduction section 11 and a gas flow output section 12 in communication, the inlet end of the gas flow introduction section 11 is used for controllable communication with an external pressure source (not shown in the drawings, which can be configured as an external independent component), a plurality of gas outlets 121 are formed on the gas flow output section 12, in a specific embodiment, the hole diameter of the gas outlet 121 is 3mm to 5mm, and the pressure gas flow is inert gas, for example, in a specific embodiment, the inert gas adopts argon, in the specific use process, the aforementioned gas flow output section 12 is below the liquid level of the metal melt, it can be understood that the aforementioned inert gas should not be dissolved in the metal melt.
[0027] In the technical scheme, the metal melt degassing device adopts the pressure gas flow introduction pipe 1 to introduce the inert gas with a certain pressure from outside into the metal melt and output to the metal melt through the gas flow output section 12, the pressure gas can be used to drive the metal melt in contact to flow, and then the metal melt realizes the degassing purpose in the flowing process, at the same time, the impurities such as suspended particulate matters in the lower layer of the metal melt can be stirred and floated to the upper liquid level of the metal melt to obtain pure and uniform metal melt, thereby meeting the production needs of high-quality metal products, at the same time, the degassing device in the utility model has simple structure, few components, can significantly reduce the production cost and reduce the probability of failure.
[0028] In a specific embodiment, the aforementioned metal melt is an aluminum alloy melt.
[0029] In some embodiments, the gas flow introduction section 11 is a stainless steel pipe, and the gas flow output section 12 is a graphite pipe, so that in the specific use process, the stainless steel pipe is outside the metal melt and does not contact the high-temperature metal melt, which can improve the service life and further reduce the manufacturing cost of the device, at the same time, the graphite pipe is in the high-temperature metal melt and can withstand high-temperature burning. In a specific embodiment, the graphite pipe and the stainless steel pipe are threadedly connected, which can be conveniently replaced after the graphite pipe is damaged.
[0030] In some embodiments, the gas flow output section 12 has two regions at its diametrically opposite sides, and each of the gas outlet holes 121 is located in the two regions, that is, each of the gas outlet holes 121 is not uniformly spaced along the circumference of the gas flow output section 12, but is only arranged at the diametrically opposite sides of the gas flow output section 12, so that the driving flow direction of the pressure gas flow to the metal melt is more regular, and the turbulence caused by the gas flow driving agitation is prevented, which is beneficial to improve the removal efficiency of inclusions and gas (hydrogen absorption) in the metal melt.
[0031] In some embodiments, the pressure gas flow introduction pipe 1 further comprises a necked section 13 which is in communication between the gas flow introduction section 11 and the gas flow output section 12.
[0032] In the technical solution, by arranging the necked section 13 between the gas flow introduction section 11 and the gas flow output section 12, the pressure gas flow introduced into the gas flow introduction section 11 can be accelerated, and the flow rate of the pressure gas output into the metal melt is faster, and the driving speed of the metal melt flow is also correspondingly increased, which can further improve the degassing efficiency and the floating efficiency of inclusions. The flow diameter of the necked section 13 is reasonably selected according to specific conditions.
[0033] In some embodiments, the metal melt degassing device further comprises a heating device 2 for heating the pressure gas flow flowing in the gas flow introduction section 11. Specifically, when the metal melt is an aluminum alloy melt, the heating device 2 should be able to heat the pressure gas flow to 500-900°C. It can be understood that the heating capacity of the heating device 2 should be adjusted adaptively when the material of the metal melt is different.
[0034] In the technical solution, by arranging the heating device 2 at the gas flow introduction section 11 to heat the pressure gas flow flowing therein, a high-temperature pressure gas flow is formed, and the metal melt (i.e. aluminum alloy melt) is stirred by the high-temperature pressure gas flow, which not only removes inclusions and harmful gas, but also compensates the temperature of the metal melt, reduces the segregation degree of the metal melt, and further improves the mechanical properties of the metal.
[0035] In a specific embodiment, the heating device 2 comprises a resistance heating element or an electromagnetic heater (such as a common high-frequency electromagnetic induction heater) which is spirally wound on the outer peripheral wall of the gas flow introduction section 11. The resistance heating element or electromagnetic heater is used to heat the pressure gas flow in the gas flow introduction section 11, which is simple to control and has relatively accurate temperature control. The heating device 2, i.e. the resistance heating element or electromagnetic heater, extends along the axial length of the gas flow introduction section 11 by 100-150 mm, so as to ensure that the cooperation length between the resistance heating element or electromagnetic heater and the outer peripheral wall of the gas flow introduction section 11 is sufficient, thereby ensuring the heating effect.
[0036] In some embodiments, a slag removal disc 3 is connected to the end of the gas flow output section 12 away from the gas flow introduction section 11, and the slag removal disc 3 extends in the radial direction of the gas flow output section 12 and protrudes from the outer peripheral wall of the gas flow output section 12.
[0037] In the technical solution, the slag removal disc 3 is arranged at the end of the gas flow output section 12 away from the gas flow introduction section 11, and the slag removal disc 3 protrudes from the outer peripheral wall of the gas flow output section 12 in the radial direction of the gas flow output section 12, i.e., in the specific use process, the top surface of the slag removal disc 3 can bear the oxidation film formed on the liquid surface of the metal melt, so that the oxidation film (containing dross) can be removed together in the process of controlling the rising of the metal melt degassing device, and the oxidation film does not need to be cleaned separately.
[0038] In some embodiments, a plurality of liquid falling holes 31 are formed on the slag removal disc 3, and each of the liquid falling holes 31 is arranged in multiple circles in the circumferential direction of the gas flow output section 12. In a specific embodiment, the diameter of the liquid falling hole 31 is 10-15 mm, which can ensure that the metal melt flows out during the rising of the slag removal disc 3, and reduce the loss of the metal melt. In order to improve the service life of the slag removal disc 3, the slag removal disc 3 is a graphite disc, i.e., made of high-purity graphite. In actual use, after the aeration is completed, the metal melt is static for 3-5 minutes, the inclusions are fully floated and combined with the oxidation film on the surface, then the slag removal disc 3 is lifted, and the metal liquid falls through the liquid falling holes 31 in the lifting process, and at the same time, the oxidation film and the inclusions on the surface of the melt and other harmful substances can be removed, and the purity and mechanical properties of the alloy are improved.
[0039] Those skilled in the art can easily understand that the advantageous technical features of each of the above-mentioned modes can be freely combined and superimposed without conflict.
[0040] The above description is only the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be regarded as the protection scope of the present application.
Claims
1. A metal melt degassing apparatus, characterized by, The pressure gas flow introduction pipe (1) comprises a communicating gas flow introduction section (11) and a gas flow output section (12), the inlet end of the gas flow introduction section (11) is used for controllable communication with an external pressure source, a plurality of gas outlet holes (121) are formed on the gas flow output section (12), and the pressure gas flow is inert gas.
2. The metal melt degassing apparatus of claim 1, wherein The gas flow introduction section (11) is a stainless steel pipe, the gas flow output section (12) is a graphite pipe, and / or the inert gas is argon.
3. The metal melt degassing apparatus of claim 2, wherein, The graphite pipe is threadedly connected with the stainless steel pipe.
4. The metal melt degassing apparatus of claim 1, wherein The gas flow output section (12) has regions at two radially opposite sides thereof, and each of the gas outlet holes (121) is located in the regions at the two sides; and / or the diameter of the gas outlet hole (121) is 3-5 mm.
5. The metal melt degassing apparatus of claim 1, wherein The pressure gas flow introduction pipe (1) further comprises a necked section (13) communicating between the gas flow introduction section (11) and the gas flow output section (12).
6. The metal melt degassing apparatus of claim 1, wherein Further comprising a heating device (2) for heating the pressure gas flow flowing in the gas flow introduction section (11).
7. The metal melt degassing apparatus of claim 6, wherein The heating device (2) comprises a resistance heating element or an electromagnetic heater spirally wound on the outer peripheral wall of the gas flow introduction section (11); and / or the metal melt is an aluminum alloy melt, the heating device (2) can heat the pressure gas flow to 500-900 DEG C; and / or the heating device (2) extends along the axial length of the gas flow introduction section (11) by 100-150 mm.
8. The metal melt degassing apparatus of claim 1, wherein The gas flow output section (12) is connected with a slag removal disc (3) at one end away from the gas flow introduction section (11), and the slag removal disc (3) extends along the radial direction of the gas flow output section (12) and protrudes from the outer peripheral wall of the gas flow output section (12).
9. The metal melt degassing apparatus of claim 8, wherein, The slag removal disc (3) is formed with a plurality of liquid falling holes (31), each of the liquid falling holes (31) is arranged in multiple turns around the circumferential direction of the gas flow output section (12); and / or the slag removal disc (3) is a graphite disc.
10. The metal melt degassing apparatus of claim 9, wherein, The diameter of the liquid falling hole (31) is 10-15 mm.