CN113465372B - Smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite material - Google Patents

Smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite material Download PDF

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Publication number
CN113465372B
CN113465372B CN202110826081.0A CN202110826081A CN113465372B CN 113465372 B CN113465372 B CN 113465372B CN 202110826081 A CN202110826081 A CN 202110826081A CN 113465372 B CN113465372 B CN 113465372B
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stirring
hole
state
magnesium
based composite
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CN113465372A (en
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刘琦
邵延凡
姜思琪
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Priority to PCT/CN2021/108381 priority patent/WO2023000351A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D27/00—Stirring devices for molten material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B2014/0887—Movement of the melt

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

The invention relates to the technical field of smelting furnaces, in particular to a smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite materials, which comprises: a crucible for accommodating a material; a main body accommodating the crucible; the cover body is arranged at the top of the main body and used for sealing the accommodating space of the main body; the stirring unit is provided with a first state for stirring the materials in the crucible and a second state which is connected with the cover body and is far away from the crucible; and the power unit is used for switching between the first state and the second state by driving the stirring unit to do linear motion and providing rotation power for the stirring unit. The stirring unit is always positioned in the sealed space limited by the cover body and the main body, the execution and the storage states of the stirring action can be respectively realized through the conversion of the two states, and the probability of introducing air can be effectively reduced through the improvement of the stirring unit, so that the air and magnesium are prevented from reacting to form inclusion and are screwed into the melt along with the stirring paddle.

Description

Smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite material
Technical Field
The invention relates to the technical field of smelting furnaces, in particular to a smelting and stirring integrated high-temperature smelting furnace for preparing a magnesium-based composite material.
Background
The magnesium alloy is the lightest metal material in engineering application, and has wide development prospect in the aerospace and automobile industries. The preparation of magnesium-based composite materials aiming at enhancing the strength of magnesium alloys is favored by many researchers. However, magnesium alloy is inflammable and easy to oxidize, and more oxidation defects are easily introduced in the preparation process, and for the particle reinforced magnesium-based composite material, in order to uniformly disperse the reinforcement in the magnesium alloy matrix, the stirring process is inevitable, which brings great difficulty to the preparation process of the magnesium-based composite material. At present, equipment for preparing the particle reinforced magnesium-based composite material is a traditional high-temperature smelting furnace, a stirring machine separated from a furnace body is adopted in the stirring process, and air is easily introduced to react with magnesium to form impurities which are screwed into a melt along with a stirring paddle.
In view of the above problems, the present inventors have actively researched and innovated based on practical experience and professional knowledge that are abundant for many years in engineering application of such products, and together with the application of theory, in order to design a melting and stirring integrated high temperature melting furnace for magnesium-based composite material preparation.
Disclosure of Invention
The invention provides a smelting and stirring integrated high-temperature smelting furnace for preparing a magnesium-based composite material, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a smelting stirring integral type high temperature smelting furnace for magnesium-based composite material preparation includes:
a crucible for accommodating a material;
a body accommodating the crucible;
the cover body is arranged at the top of the main body and used for sealing the accommodating space of the main body;
the stirring unit is provided with a first state for stirring the materials in the crucible and a second state which is connected with the cover body and is far away from the crucible;
and the power unit is used for driving the stirring unit to do linear motion so as to realize the switching between the first state and the second state, and partially extends into the main body under the first state so as to provide rotating power for the stirring unit.
Further, the stirring unit includes:
the stirring paddle is used for stirring the materials through rotation;
the mounting head is arranged at the top of the stirring paddle and is connected with the power unit in the first state to realize power transmission; and the second state is connected with the top of the cover body and partially protrudes out of the outer surface of the cover body.
Further, the mounting head comprises a rod body and an elastic sheet;
at least two groove bodies are uniformly distributed at the end part of the rod body around the axis;
the elastic pieces are arranged in one-to-one correspondence with the groove body and are bent, one end of each elastic piece is fixedly connected with the side wall of the groove body, and the other end of each elastic piece extends to the outer side of the groove body in a natural state;
under the second state, the part that the flexure strip is located the cell body outside with the lid top offsets, just the body of rod with be located the laminating of through-hole inner wall on the lid realizes stirring unit is fixed in the direction of height.
Further, the number of the groove bodies is two.
Further, a prismatic mounting groove is formed in the end portion of the rod body, and a protrusion matched with the mounting groove is formed in the end portion of the power unit;
wherein, the cell body with be provided with first through-hole between the mounting groove, be provided with the second through-hole in the arch, be provided with the third through-hole on the elastic sheet, stirring unit and power pack are through running through the connecting piece of first through-hole, second through-hole and third through-hole is realized fixed, the both ends of connecting piece all hold in the cell body, and connect the back the elastic sheet also all holds in the cell body.
Further, the inner diameters of the first through hole and the second through hole are equal to the outer diameter of the connecting piece.
Furthermore, the third through hole is a straight hole, the length direction of the third through hole is arranged along the axis direction of the rod body, and the width of the third through hole is equal to the diameter of the first through hole.
Further, the power unit comprises a connecting rod which is connected with the rod body to realize power transmission;
the through hole on the lid with connecting rod and the body of rod uniform diameter set up, and the inner wall inlays and is equipped with the sealing washer.
Furthermore, the peripheries of the butt joint ends of the rod body and the connecting rod are smoothly contracted.
Furthermore, the mounting head is provided with a limiting convex edge, at least part of the limiting convex edge is of a magnetic structure, and the inner wall of the cover body corresponds to the magnetic structure and is provided with a magnetic pole of opposite polarity.
Through the technical scheme of the invention, the following technical effects can be realized:
the stirring unit is always positioned in the sealed space limited by the cover body and the main body, the execution and the storage states of stirring action can be respectively realized through the conversion of the two states, and the probability of introducing air can be effectively reduced through the improvement of the stirring unit, so that the air and magnesium are prevented from reacting to form inclusion and are screwed into a melt along with the stirring paddle; by adopting the technical scheme of the invention, the problem that more oxidation defects are introduced into the separating stirrer is solved, the problem of large temperature difference between the furnace mouth and the furnace bottom in the stirring process is solved, the flow of protective gas is saved, and an efficient solution is provided for the preparation process of the high-performance particle reinforced magnesium matrix composite.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a stirring unit in a smelting and stirring integrated high-temperature smelting furnace for magnesium-based composite material preparation in a first state;
FIG. 2 is a schematic diagram of a stirring unit in a smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite materials in a second state;
FIG. 3 is a schematic structural view of a stirring unit;
FIG. 4 is a schematic view of the stirring unit connected to the cover;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a cross-sectional view of the stirring unit;
FIG. 7 is an enlarged view of a portion of FIG. 6 at B;
FIG. 8 is a schematic view of the structure of the mounting head;
FIG. 9 is a schematic view of a rod body;
FIG. 10 is an enlarged view of a portion of FIG. 8 at C;
FIG. 11 is an enlarged view of a portion where the elastic piece is mounted;
FIG. 12 is an enlarged view of a portion of the junction of the stirring unit and the power unit;
reference numerals: 1. a crucible; 2. a main body; 3. a cover body; 4. a stirring unit; 41. a stirring paddle; 42. a mounting head; 42a, a rod body; 42b, an elastic sheet; 42c, a groove body; 42d, mounting grooves; 43. a limiting convex edge; 5. and a power unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, a melting and stirring integrated high-temperature melting furnace for magnesium-based composite material preparation comprises: a crucible 1 for accommodating a material; a main body 2 accommodating the crucible 1; a cover body 3 arranged on the top of the main body 2 for sealing the accommodating space of the main body 2; the crucible stirring device further comprises a stirring unit 4 which has a first state of stirring the materials in the crucible 1 and a second state of being connected with the cover body 3 and being far away from the crucible 1; the power unit 5 drives the stirring unit 4 to do linear motion to realize switching between the first state and the second state, and partially extends into the main body 2 to provide rotating power for the stirring unit 4 in the first state.
In the present invention, a stirring unit 4 is provided which is always located in a sealed space defined by a lid 3 and a body 2, and can be switched between two states to implement a stirring operation and a storage state, and a power unit 5 is used as a switching operation execution structure and can be used only in the operation switching and the stirring operation, and can be used in an idle state to participate in other stirring operations. Through the improvement of the stirring unit 4, the probability of introducing air can be effectively reduced, so that the air is prevented from reacting with magnesium to form inclusion and is screwed into the melt along with the stirring paddle 41.
Wherein, stirring unit 4 includes: the stirring paddle 41 is used for stirring the materials through rotation; a mounting head 42 which is provided on the top of the paddle 41 and is connected to the power unit 5 in a first state to transmit power; and is connected with the top of the cover body 3 in the second state, and partially protrudes out of the outer surface of the cover body 3.
As shown in fig. 3 to 5, the stirring paddle 41 can be rotated to fully stir the material, and the structural form thereof can be any one of the structural forms in the prior art, which is not limited in the present invention. In the preferred embodiment, the mounting head 42 is particularly important, and in the second state, it protrudes from the outer surface of the cover 3, so that the connection between the mounting head and the power unit 5 is very convenient, and the operation difficulty is effectively reduced.
As shown in fig. 6 to 12, the mounting head 42 includes a rod 42a and an elastic piece 42 b; at least two groove bodies 42c are uniformly distributed at the end part of the rod body 42a around the axis; the elastic pieces 42b and the groove body 42c are arranged in a one-to-one correspondence manner and are bent, one end of each elastic piece is fixedly connected with the side wall of the groove body 42c, and the other end of each elastic piece extends to the outer side of the groove body 42c in a natural state; in the second state, the part of the elastic piece 42b located outside the groove 42c abuts against the top of the cover 3, and the rod 42a is attached to the inner wall of the through hole located on the cover 3, so that the stirring unit 4 is fixed in the height direction.
With the structure of the mounting head 42 in the preferred embodiment, in the second state, the stirring unit 4 can be stably positioned by the support of the top of the cover 3 on the elastic piece 42 b; specifically, in the process that the rod body 42a penetrates through the through hole in the cover body 3 from bottom to top, the elastic piece 42b is extruded by the side wall of the through hole and retracts into the groove body 42c, so that the smooth implementation of the process can be ensured, and in the process that the rod body needs to enter the accommodating space between the cover body 3 and the main body 2 from top to bottom, the shape of the elastic piece 42b needs to be changed through external force and retracts into the groove body 42c, so that the blocking of the elastic piece 42b by the cover body 3 is released. For machining purposes, two grooves 42c are provided.
As a preference of the above embodiment, the end of the rod body 42a is provided with a prismatic mounting groove 42d, and the end of the power unit 5 is provided with a projection adapted to the mounting groove 42 d; wherein, be provided with first through-hole between cell body 42c and the mounting groove 42d, be provided with the second through-hole in the arch, be provided with the third through-hole on the flexure strip 42b, stirring unit 4 and power pack 5 are fixed through the connecting piece realization that runs through first through-hole, second through-hole and third through-hole, and the both ends of connecting piece all hold in cell body 42c, and connect back flexure strip 42b and also all hold in cell body 42 c.
In the preferred embodiment, a mode that the deformation power of the elastic sheet 42b can be optimized and the connection mode of the stirring unit 4 and the power unit 5 can be optimized is provided. Specifically, in the process of connecting the stirring unit 4 and the power unit 5, the following steps are adopted:
s1: the projection is inserted into the mounting groove 42d to ensure complete fitting;
s2: and (3) inserting connecting pieces into the first through hole, the second through hole and the third through hole, and realizing the connection of the stirring unit 4 and the power unit 5 through locking, wherein the connecting pieces adopted in the step can be of a conventional bolt or screw structure, and the end parts of the connecting pieces are locked through nuts.
In the step S2, after the connecting member is inserted into each through hole, the stirring unit 4 and the power unit 5 are already pre-connected, and then the elastic piece 42b gradually retracts into the groove 42c by locking the nut, so that the blocking of the cover body 3 to the elastic piece 42b is released, the power unit 5 can drive the rod body 42a to enter the accommodating space, so that the stirring action can be performed, and the power transmission can be effectively realized by the matching of the mounting groove 42d and the protrusion.
In this preferred scheme, there is still a more important technological effect, namely, the flexure strip 42b can guarantee the validity of nut to the connecting piece locking as elastic construction, plays the effect of elastic gasket, avoids causing the connection to lose efficacy because of vibration etc. in the stirring process.
Preferably, the inner diameters of the first through hole and the second through hole are equal to the outer diameter of the connecting piece, so that the stirring unit 4 and the power unit 5 can be stably connected after the connecting piece is inserted, and the relative position movement in the nut locking process is avoided.
In the implementation, in order to allow the flexure strip 42b to retract by deformation when receiving the extrusion, the cross sectional area of third through-hole needs to be greater than the cross sectional area of first through-hole and second through-hole, and in order to guarantee the shape stability of its deformation in-process, the third through-hole is a word hole, and length direction sets up along body of rod 42a axis direction, and the width equals first through-hole diameter, and the shape stability of flexure strip 42b in deformation in-process can be guaranteed to the laminating relation between the both sides wall in a word hole and the connecting piece.
For the sake of tightness, the power unit 5 includes a connecting rod, which is connected with the rod body 42a to realize power transmission; the through hole on the cover body 3 is arranged with the connecting rod and the rod body 42a in the same diameter, and the inner wall is embedded with a sealing ring. Through the setting of sealing washer for the in-process of the body of rod 42a and connecting rod drunkenness in the through-hole all can realize effectual sealed, avoids the inflow of air, also makes stirring unit 4 can regard as the seal structure of through-hole when the second state through this kind of mode.
In order to prolong the service life of the sealing ring, the peripheries of the butt joint ends of the rod body 42a and the connecting rod are in smooth contraction shapes, so that the sealing ring is prevented from being damaged in the moving process.
As another embodiment of maintaining the second state of the stirring unit 4, the mounting head 42 is provided with a limiting convex edge 43, the limiting convex edge 43 is at least partially of a magnetic structure, and the inner wall of the cover 3 is provided with a magnetic pole of opposite polarity corresponding to the magnetic structure.
Specifically, when the power unit 5 pulls the stirring unit 4 upwards to the limit ledge 43 to contact the special-shaped magnetic pole, the stirring unit 4 can be attracted to the opposite magnetic pole, and the power unit 5 is removed, so that the stirring unit 4 can be stably kept in the second state.
Wherein, the magnetic structure on the spacing protruding edge 43 can be an embedded structure or an external structure, and when the structure is an embedded structure, the structure of the sealing ring can be covered outside, so that when the structure is attracted by the special-shaped magnetic pole, the sealing ring can be extruded to realize sealing, and the sealing performance of the accommodating space in the second state is ensured.
By adopting the technical scheme of the invention, the problem that more oxidation defects are introduced into the separating stirrer is solved, the problem of large temperature difference between the furnace mouth and the furnace bottom in the stirring process is solved, the flow of protective gas is saved, and an efficient solution is provided for the preparation process of the high-performance particle reinforced magnesium matrix composite.
When stirring is needed, the stirring unit 4 and the power unit 5 are connected outside the cover body 3, the stirring unit 4 is pushed into the accommodating space through the power unit 5 after the connection, and then power output is provided for the stirring unit 4 through the power unit 5, so that the stirring paddle 41 rotates to stir, wherein according to the prior art, a motor of the power unit 5 is positioned outside the cover body 3, and a connecting rod driven to rotate by the motor can be inserted into the accommodating space; after the stirring is completed, the stirring unit 4 is pulled by the power assembly 5 to move upwards until the mounting head 42 partially reaches the outside of the cover 3, and then the movement is stopped, and the connection between the stirring unit 4 and the power assembly 5 is released, at this time, the stirring unit 4 can seal the through hole on the cover 3, and the power assembly 5 can be used for other stirring processes.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A smelt stirring integral type high temperature smelting furnace for magnesium based composite preparation which characterized in that includes:
a crucible for accommodating a material;
a body accommodating the crucible;
the cover body is arranged at the top of the main body and used for sealing the accommodating space of the main body;
the stirring unit is provided with a first state for stirring the materials in the crucible and a second state which is connected with the cover body and is far away from the crucible;
the power unit is used for realizing the switching between the first state and the second state by driving the stirring unit to do linear motion, and partially extends into the main body to provide rotating power for the stirring unit in the first state;
the stirring unit includes:
the stirring paddle is used for stirring the materials through rotation;
the mounting head is arranged at the top of the stirring paddle and is connected with the power unit in the first state to realize power transmission; the second state is connected with the top of the cover body and partially protrudes out of the outer surface of the cover body;
the mounting head comprises a rod body and an elastic sheet;
at least two groove bodies are uniformly distributed at the end part of the rod body around the axis;
the elastic pieces are arranged in one-to-one correspondence with the groove body and are bent, one end of each elastic piece is fixedly connected with the side wall of the groove body, and the other end of each elastic piece extends to the outer side of the groove body in a natural state;
under the second state, the part that the flexure strip is located the cell body outside with the lid top offsets, just the body of rod with be located the laminating of through-hole inner wall on the lid realizes stirring unit is fixed in the direction of height.
2. The smelting and stirring integrated high-temperature smelting furnace for magnesium-based composite material preparation according to claim 1, wherein two tanks are provided.
3. The smelting and stirring integrated high-temperature smelting furnace for preparing the magnesium-based composite material according to claim 1 or 2, wherein a prismatic mounting groove is formed at the end part of the rod body, and a protrusion matched with the mounting groove is formed at the end part of the power unit;
wherein, the cell body with be provided with first through-hole between the mounting groove, be provided with the second through-hole in the arch, be provided with the third through-hole on the elastic sheet, stirring unit and power pack are through running through the connecting piece of first through-hole, second through-hole and third through-hole is realized fixed, the both ends of connecting piece all hold in the cell body, and connect the back the elastic sheet also all holds in the cell body.
4. The melting and stirring integrated high temperature melting furnace for magnesium-based composite material preparation as claimed in claim 3, wherein the inner diameter of the first through hole and the second through hole is set equal to the outer diameter of the connecting member.
5. The smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite materials according to claim 4, wherein the third through hole is a straight hole, the length direction of the third through hole is arranged along the axis direction of the rod body, and the width of the third through hole is equal to the diameter of the first through hole.
6. The smelting and stirring integrated high-temperature smelting furnace for preparing the magnesium-based composite material according to claim 1, wherein the power unit comprises a connecting rod connected with the rod body to realize power transmission;
the through hole on the lid with connecting rod and the body of rod uniform diameter set up, and the inner wall inlays and is equipped with the sealing washer.
7. The smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite materials according to claim 6, wherein the peripheries of the butt ends of the rod body and the connecting rod are smoothly contracted.
8. The smelting and stirring integrated high-temperature smelting furnace for preparing the magnesium-based composite material according to claim 1, wherein a limiting convex edge is arranged on the mounting head, the limiting convex edge is at least partially of a magnetic structure, and the inner wall of the cover body is provided with opposite magnetic poles corresponding to the magnetic structure.
CN202110826081.0A 2021-07-21 2021-07-21 Smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite material Active CN113465372B (en)

Priority Applications (2)

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CN202110826081.0A CN113465372B (en) 2021-07-21 2021-07-21 Smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite material
PCT/CN2021/108381 WO2023000351A1 (en) 2021-07-21 2021-07-26 Smelting and stirring integrated high-temperature smelting furnance for preparing magnesium-based composite material

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CN202110826081.0A CN113465372B (en) 2021-07-21 2021-07-21 Smelting and stirring integrated high-temperature smelting furnace for preparing magnesium-based composite material

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CN115418518B (en) * 2022-07-21 2023-09-08 山西瑞格金属新材料有限公司 ZM5 alloy refining and modification integrated smelting method based on mixed gas protection

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KR101213559B1 (en) * 2004-12-22 2012-12-18 겐조 다카하시 Apparatus and method for agitating, and melting furnace attached to agitation apparatus using agitation apparatus
CN101539365B (en) * 2009-04-27 2011-01-05 北京航空航天大学 Smelting furnace with mechanical agitation and high-energy ultrasonic processing and smelting method thereof
CN101613809B (en) * 2009-07-10 2011-06-08 苏州有色金属研究院有限公司 Device for preparing particle reinforcing metal based compound material
CN101731959A (en) * 2010-01-09 2010-06-16 广东新宝电器股份有限公司 connecting device of stirring rod
CN203286888U (en) * 2013-04-24 2013-11-13 岳阳宇航新材料有限公司 Fully-closed magnesium alloy vacuum melting furnace
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CN209985282U (en) * 2019-04-18 2020-01-24 柏安美创新科技(广州)有限公司 Dyestuff mixing stirring device
CN212645336U (en) * 2020-07-09 2021-03-02 国科镁业科技(河南)有限公司 Metal continuous smelting furnace
CN113134595A (en) * 2021-04-08 2021-07-20 西北工业大学 Smelting furnace and smelting method for making chemical components and microstructure of magnesium alloy uniform

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