CN211872071U - In-situ inter-cooling device for manufacturing hollow beryllium-aluminum alloy structure - Google Patents
In-situ inter-cooling device for manufacturing hollow beryllium-aluminum alloy structure Download PDFInfo
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- CN211872071U CN211872071U CN201922295570.9U CN201922295570U CN211872071U CN 211872071 U CN211872071 U CN 211872071U CN 201922295570 U CN201922295570 U CN 201922295570U CN 211872071 U CN211872071 U CN 211872071U
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Abstract
The invention provides an in-situ inter-cooling device for manufacturing a hollow beryllium-aluminum alloy structure, which comprises: the device comprises a hollow peripheral structure, an intercooling structure, a supporting plate and a vibrator, wherein the intercooling structure moves up and down relatively in the middle of the peripheral structure, the supporting plate is positioned below the peripheral structure, the vibrator is fixed below the supporting plate, an impurity accommodating groove is formed in the bottom of the peripheral structure, intercooling internal circulation is arranged inside the intercooling structure, the device can realize effective removal of gas through sequential solidification from inside to outside, splashing and impurity wrapping in the metal dumping process are avoided due to in-situ solidification, and bubble generation and temperature fluctuation are reduced.
Description
Technical Field
The utility model relates to a metal material processing field specifically is a cold device in normal position for making cavity beryllium aluminum alloy structure.
Background
Beryllium-aluminum alloys have been used in aerospace due to their excellent properties such as low specific gravity, high strength, and high toughness. For example: the RAH-60Comanch type military helicopters and the Alien PAC-3 type missile system have been used in the United states. AlBeMet162, produced by Brush Wellman, was used by orbital scientific Inc. in 28 ORB-COMN type low-orbit communications satellites. Because of the good stress corrosion resistance of beryllium aluminum alloys, the european space sector has agreed to use AlBeMet162 for satellite structural parts of spacecraft. In addition, beryllium-aluminum alloys have entered the civilian field. Such as the loudspeaker shell, the automobile steering wheel, the tennis racket, the wheel bracket and the brake pad on the racing car which are made by the electro fusion company [4 ]. Beryllium aluminum alloys are very widely used, but have a very high domestic application.
The main problems of production and application are:
(1) is a composite material without alloying, and the qualified product can not be manufactured by the domestic conventional casting method.
From the phase diagram of beryllium aluminum [ it can be found that beryllium aluminum alloy has eutectic reaction at 644 ℃ without any compound. Beryllium-aluminum alloys, which are substantially completely insoluble in beryllium and aluminum, are actually composites of pure aluminum and pure beryllium.
The morphology of the phase size separated from the two phases depends on the rate of solidification. If the solidification is simple and rapid, the performance is reduced, an anisotropic sheet structure is generated, a large number of micro pores or air pores are associated, and if the solidification speed is low, the performance characteristics of the composite material are lost due to the separation of two phases of beryllium and aluminum because the two phases have large sizes.
The aluminum alloy containing 62 percent of beryllium and 38 percent of aluminum alloy developed in the United states is prepared by using pre-alloyed powder, mainly passes through a series of complicated processes such as extrusion, hot rolling and the like, has higher cost, cannot be processed into special-shaped pieces with complicated shapes, and has great limitation on application.
Subsequently, the U.S. nuclear metal company and Rockwell company adopt a near net shape production process for investment casting to prepare beryllium-aluminum alloy, which contains 62% of beryllium and 38% of aluminum and can be processed into a special-shaped piece with a complex shape.
(2) Because beryllium is toxic and difficult to synthesize beryllium-aluminum, the imported beryllium-aluminum Be5Al alloy parent metal is mainly used for diluting and synthesizing beryllium-aluminum alloy with low beryllium content, but refinement of beryllium cannot Be controlled by the user, and segregation can occur when the cutting temperature and time are not well controlled.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the prior art, the utility model provides a pair of cold device in normal position for making cavity beryllium aluminium alloy structure, the device simple structure, job stabilization is reliable, can be high efficiency, this alloy billet of low-cost preparation.
The technical scheme is as follows: in order to achieve the above object, the in-situ inter-cooling device for manufacturing a hollow beryllium-aluminum alloy structure of the present invention comprises: the device comprises a vacuum cover, a hollow peripheral structure arranged in the vacuum cover, an intercooling structure which moves up and down relatively in the middle of the peripheral structure, a supporting plate positioned below the peripheral structure and a vibrator fixed below the supporting plate, wherein the intercooling structure is in sealing connection with a part penetrating through the vacuum cover, the bottom of the peripheral structure is provided with an impurity receiving groove, intercooling internal circulation is arranged in the intercooling structure, a heating part is arranged in the vacuum cover, the heating part is an induction heating coil, and the induction heating coil is arranged in the vacuum cover in an additional mode to provide heat for liquid metal.
As a further preferred aspect of the present invention, one end of the intercooling structure is connected to the heating device for controlling the intercooling structure to move up and down and having a heating function, the other end of the intercooling structure is inserted into the hollow peripheral structure, the outer surface of the intercooling structure is not in contact with the inner wall of the peripheral structure, and when a product is to be manufactured, the intercooling structure is controlled by the heating device to move down and heat the intercooling structure, so as to heat the solid alloy and melt the solid alloy.
As a further preference of the present invention, the limit position of the downward movement of the intercooling structure is adjustable, when products with different sizes and thicknesses are required, the limit position of the downward movement of the intercooling structure is limited by the heating device to be adjustable, that is, the size of the end part of the intercooling structure from the bottom of the peripheral structure is larger than the size of the bottom thickness of the product.
As the further optimization of the utility model, the shape of the end part on the intercooling structure is matched with the shape of the impurity containing groove, thereby ensuring the uniform heating of the alloy in the liquid state.
As a further preferred aspect of the present invention, the peripheral structure is a crucible or a chess case.
As a further preferred aspect of the present invention, the power of the heating portion when the metal is in the metal solidification state is 1/8-1/10 of the power when the metal is heated, the heating portion provides heat for melting the metal, and the heating portion can use stable cooling speed when liquid is cooled, so that effective slow cooling is performed to remove bubbles in the liquid metal.
As a further preferred aspect of the present invention, the peripheral structure is induction-heated.
As a further preferred feature of the present invention, the peripheral structure is provided with a solid alloy therein, and the solid alloy is melted by the heat from the peripheral structure and the intercooling structure to form a product.
As a further preferable mode of the present invention, a medium is provided in the intercooling internal circulation.
As a further preferred aspect of the present invention, the medium is a liquid or a gas having a cooling function, such as cooling oil, cold water, liquid nitrogen, or the like.
As a further preferred aspect of the present invention, the intercooling internal circulation is provided with an input port for the medium and a discharge port for the medium, when the medium enters the intercooling circulation from the input port and is discharged from the discharge port, the discharged medium can be recovered and reused, thereby reducing the pressure of the environment.
As a further preference of the utility model, the material of the intercooling structure is graphite, which is corrosion resistant, difficult to react with acid, alkali and the like, and has reducibility, so that metal can be smelted at high temperature.
As a further preferred aspect of the present invention, the vibrator is an ultrasonic vibrator or a high frequency vibrator or an electromagnetic stirrer, and by adding the vibrator, the crystal grains are refined and the bubbles are removed during the solidification process.
Has the advantages that: the utility model provides a pair of cold device in normal position for making cavity beryllium aluminium alloy structure compares with prior art, has following advantage:
1. the gas can be effectively discharged by sequential solidification from inside to outside;
2. the metal is solidified in situ in a vacuum state, so that splashing and impurity wrapping in the metal pouring process are avoided, and bubbles and temperature fluctuation are reduced;
3. the in-situ constant-temperature liquid-phase mold cavity is filled, so that the contradiction of the cooling flow type of the common pouring type metal liquid is completely solved;
4. the problem of insufficient fluidity caused by temperature drop in the metal liquid filling process is solved, sufficient filling time is provided under the constant temperature condition, the forming details are fully embodied, and the filling part of a complex and narrow forming structure is fully filled;
5. the method cancels the design of a runner and a riser of the traditional precision casting, reduces the cost of raw materials and reduces the waste of rare and precious materials;
6. vacuum in-situ solidification reduces burning loss of materials and air pollution, and reduces the pressure of the environment;
7. the vibrator is additionally arranged at the bottom of the peripheral structure, so that crystal grains can be refined in the solidification process of the alloy, and bubbles are removed;
8. the induction heating coil is additionally arranged in the vacuum cover to provide heat for the liquid metal, and meanwhile, the cooling speed is stable when the liquid is cooled, so that effective slow cooling is realized, and bubbles in the liquid metal are removed;
9. through with cold structure rather than wearing to establish the position sealing connection on the vacuum cover, improved the equipment security height, avoid the device to appear can take place the too big danger of pressure in airtight vacuum cover after the inside seepage.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention with the alloy in solid state;
FIG. 2 is a schematic view of the internal structure of the alloy in liquid state;
fig. 3 is a full sectional view of the product.
Detailed Description
The invention will be further elucidated with reference to the drawings and the specific embodiments.
As shown in fig. 1 and fig. 2, the in-situ inter-cooling device for manufacturing a hollow beryllium-aluminum alloy structure of the present invention includes: the device comprises a hollow peripheral structure 1, an impurity accommodating groove 11, an inter-cooling structure 2, an end part 21, an inter-cooling internal circulation 22, a support plate 5, a vibrator 6, a vacuum cover 71 and a heating part 72.
The intercooling structure 2 is hermetically connected with a part penetrating through the vacuum cover 71, the hollow peripheral structure 1 is installed in the vacuum cover 71, the intercooling structure 2 is heated under the control of the heating control device and moves up and down relatively in the middle of the peripheral structure 1, the impurity accommodating groove 11 is positioned at the bottom of the peripheral structure 1, an intercooling internal circulation 22 is arranged inside the intercooling structure 2, a heating part 72 is arranged in the vacuum cover 71, and liquid or gas with a cooling function is added into the intercooling internal circulation 22 at any time according to the cooling requirement.
Example 1
When a product 4 needs to be processed, firstly putting the weighed solid alloy 3 into the crucible 1 according to the predicted weight of the finished product, wherein the weight of the weighed solid alloy 3 is greater than the weight of the finished product;
then the crucible 1 is heated in an induction mode, at the moment, the heating device controls the intercooling structure 2 to move downwards according to the thickness of the bottom of the product 4 until the end part 21 reaches a limit position, and at the moment, the distance between the end part 21 and the bottom surface of the crucible 1 is larger than the thickness of the bottom of the product 4;
the heating device controls the heating of the outer surface of the intercooling structure 2, the switch of the ultrasonic vibrator 6 positioned at the bottom of the crucible 1 is turned on, the power of the induction heating coil serving as the heating part 72 in the vacuum cover 71 is 120kw, at the moment, the solid alloy 3 is continuously heated and melted by the crucible 1 and the intercooling structure 2, impurities in the liquid alloy are gradually precipitated into the impurity accommodating groove 11 at the bottom of the crucible 1 during the continuous heating of the intercooling structure 2, and the ultrasonic vibrator 6 uniformly vibrates the alloy in the crucible 1 through the supporting plate 5, so that the effects of refining grains and removing bubbles in the alloy are achieved;
after the limited time is up, the impurities at the moment fall into the impurity receiving groove 11, then the crucible 1 stops heating, the heating control device stops heating the intercooling structure 2, the power of an induction heating coil serving as a heating part 72 in the vacuum cover 71 is 15kw, so that the metal is slowly cooled, bubbles remained in the liquid metal are discharged, cooling oil enters an intercooling cycle from an input port of the intercooling structure 2 and is discharged from a discharge port, a cooling cycle is realized, the liquid alloy is gradually and uniformly cooled until the liquid alloy is cooled to be solid, a product 4 is obtained, the liquid alloy is solidified from inside to outside, and gas in the body fluid metal is basically discharged in the process that the liquid metal is changed to be solid metal;
after the product 4 is changed into a solid state, the crucible 1 is fixed, the heating device controls the intercooling structure 2 to move upwards, so that the product is demoulded from the crucible 1, the intercooling structure 2 is fixed in the product at the moment, the intercooling structure 2 is directly broken, and fragments of the intercooling structure 2 are taken out from the inner surface of the product 4 in a machining mode, as shown in fig. 3.
Example 2
When a product 4 needs to be processed, firstly putting the weighed solid alloy 3 into the chess shell 1 according to the predicted weight of the finished product, wherein the weight of the weighed solid alloy 3 is greater than the weight of the finished product;
then the chess shell 1 is inductively heated, at the moment, the heating device controls the intercooling structure 2 to move downwards according to the thickness of the bottom of the product 4 until the end part 21 reaches a limit position, and at the moment, the distance between the end part 21 and the bottom surface of the chess shell 1 is larger than the thickness of the bottom of the product 4;
the heating device controls the heating of the outer surface of the intercooling structure 2, a switch of the ultrasonic vibrator 6 positioned at the bottom of the chess shell 1 is turned on, the power of an induction heating coil serving as a heating part 72 in the vacuum cover 71 is 80kw, at the moment, the solid alloy 3 is continuously heated and melted by the chess shell 1 and the intercooling structure 2, impurities in the liquid alloy are gradually precipitated into the impurity accommodating groove 11 at the bottom of the chess shell 1 during the continuous heating of the intercooling structure 2, and the ultrasonic vibrator 6 uniformly vibrates the alloy in the chess shell 1 through the supporting plate 5, so that the effects of refining grains and removing bubbles in the alloy are achieved;
after the limited time is up, the impurities at the moment fall into the impurity receiving groove 11, then the heating of the chess shell 1 is stopped, the heating control device stops heating the intercooling structure 2, the power of an induction heating coil serving as a heating part 72 in the vacuum cover 71 is 10kw, so that the metal is slowly cooled, bubbles remained in the liquid metal are discharged, liquid nitrogen enters the intercooling cycle from the input port of the intercooling structure 2 and is discharged from the discharge port, a cooling cycle is realized, the liquid alloy is gradually and uniformly cooled until the liquid alloy is cooled to be solid, a product 4 is obtained, the liquid alloy is sequentially solidified from inside to outside, and gas in the body fluid metal is basically removed in the process of changing the liquid metal to be solid metal;
after the product 4 is changed into a solid state, the chess shell 1 is fixed, the heating device controls the intercooling structure 2 to move upwards, so that the product is demoulded from the chess shell 1, the intercooling structure 2 is fixed in the product at the moment, the intercooling structure 2 is directly broken, and fragments of the intercooling structure 2 are taken out from the inner surface of the product 4 in a machining mode, as shown in fig. 3.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All changes and modifications that come within the spirit of the invention are desired to be protected.
Claims (10)
1. An in-situ inter-cooling device for manufacturing a hollow beryllium-aluminum alloy structure is characterized in that: it includes: the device comprises a vacuum cover (71), a hollow peripheral structure (1) arranged in the vacuum cover (71), an intercooling structure (2) which moves up and down relatively in the middle of the peripheral structure (1), a supporting plate (5) positioned below the peripheral structure (1) and a vibrator (6) fixed below the supporting plate (5), wherein the intercooling structure (2) is hermetically connected with a part penetrating through the vacuum cover (71) and is arranged on the intercooling structure, an impurity accommodating groove (11) is formed in the bottom of the peripheral structure (1), an intercooling inner circulation (22) is arranged in the intercooling structure (2), and a heating part (72) is arranged in the vacuum cover (71).
2. The in-situ inter-cooling device for manufacturing the hollow beryllium-aluminum alloy structure according to claim 1, wherein: one end of the intercooling structure (2) is fixedly connected with a heating device which controls the intercooling structure (2) to move up and down and has a heating function, and the other end of the intercooling structure (2) is inserted into the hollow peripheral structure (1).
3. The in-situ inter-cooling device for manufacturing the hollow beryllium-aluminum alloy structure according to claim 1, wherein: the limit position of the downward movement of the intercooling structure (2) is adjustable.
4. The in-situ inter-cooling device for manufacturing the hollow beryllium aluminum alloy structure as claimed in claim 3, wherein: the shape of the end part (21) on the intercooling structure (2) is matched with the shape of the impurity accommodating groove (11).
5. The in-situ inter-cooling device for manufacturing the hollow beryllium-aluminum alloy structure according to claim 1, wherein: the power of the heating part (72) in the metal solidification state is 1/8-1/10 of the power of the metal when being heated.
6. The in-situ inter-cooling device for manufacturing the hollow beryllium-aluminum alloy structure according to claim 1, wherein: the solid alloy (3) is arranged in the peripheral structure (1).
7. The in-situ inter-cooling device for manufacturing the hollow beryllium-aluminum alloy structure according to claim 1, wherein: a medium is arranged in the intercooling internal circulation (22).
8. The in-situ inter-cooling device for manufacturing the hollow beryllium aluminum alloy structure according to claim 7, wherein: the medium is liquid or gas with a cooling function.
9. The in-situ inter-cooling device for manufacturing the hollow beryllium aluminum alloy structure according to claim 7, wherein: the intercooling internal circulation (22) is provided with a medium inlet and a medium outlet.
10. The in-situ inter-cooling device for manufacturing the hollow beryllium-aluminum alloy structure according to claim 1, wherein: the vibrator (6) is an ultrasonic vibrator or a high-frequency vibrator or an electromagnetic stirrer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111014624A (en) * | 2019-12-19 | 2020-04-17 | 苏州金江铜业有限公司 | In-situ inter-cooling device for manufacturing hollow beryllium-aluminum alloy structure |
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Address after: Room 105-16, No. 1 Factory Building, No.1 Lu Road, Port Development Zone, Fuqiao Town, Taicang City, Suzhou City, Jiangsu Province, 215400 Patentee after: Suzhou Jinjiang Electronic Technology Co.,Ltd. Address before: 215400 No.18, Xingye South Road, Taicang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: KINKOU (SUZHOU) COPPER INDUSTRY Co.,Ltd. |