CN113798464A - Split type totally-enclosed melt constraint flow induced nucleation semi-solid slurry preparation device - Google Patents
Split type totally-enclosed melt constraint flow induced nucleation semi-solid slurry preparation device Download PDFInfo
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- 238000010899 nucleation Methods 0.000 title claims abstract description 51
- 230000006911 nucleation Effects 0.000 title claims abstract description 51
- 239000002002 slurry Substances 0.000 title claims abstract description 49
- 239000007787 solid Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 230
- 238000001816 cooling Methods 0.000 claims abstract description 192
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 108091006146 Channels Proteins 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 abstract description 31
- 239000000956 alloy Substances 0.000 abstract description 26
- 229910045601 alloy Inorganic materials 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 19
- 230000006698 induction Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 9
- 241000220317 Rosa Species 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 13
- 239000002184 metal Substances 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 239000013078 crystal Substances 0.000 description 8
- 238000010907 mechanical stirring Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 210000001787 dendrite Anatomy 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
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- Mechanical Engineering (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention discloses a split type totally-enclosed melt constraint flow induced nucleation semi-solid slurry preparation device, and belongs to the technical field of material processing. The device comprises an upper cooling plate and a lower cooling plate, wherein a melt constraint flow induced nucleation channel is formed between the upper cooling plate and the lower cooling plate after the upper cooling plate and the lower cooling plate are combined, a feed inlet is formed at the upper end of the melt constrained flow induced nucleation channel, and a material receiving crucible is arranged at the lower end of the melt constrained flow induced nucleation channel; the device can prepare the semi-solid alloy slurry with uniform, fine and better spheroidization effect, the alloy melt is directly poured into the melt constraint induction nucleation device through the feed inlet, and the melt constraint induction nucleation device is welded with the upper water tank and the lower water tank with independent water inlets and water outlets, so that the semi-solid alloy slurry with fine spherical or rose shape can be prepared under the combined action of the strong chilling action on the contact surface of the beam induction nucleation device and the constraint action of the horizontal direction and the vertical direction. The invention can be used for semisolid rheoforming of alloys such as copper, aluminum, magnesium and the like, and has the advantages of simple process, convenient operation and low cost.
Description
Technical Field
The invention relates to a split type totally-enclosed melt constraint flow induced nucleation semi-solid slurry preparation device, belonging to the technical field of material processing.
Background
The semi-solid metal processing technology is a processing method that the generation of dendrites is intensively inhibited or the generated dendrites are crushed by controlling the solidification conditions during the solidification process of metal to form semi-solid slurry with equiaxial, uniform and fine primary phases uniformly distributed in a liquid phase, and then the semi-solid slurry is processed and formed by adopting conventional processes such as die casting, extrusion, die forging and the like. Various methods are currently used for preparing semi-solid slurry, such as mechanical stirring, electromagnetic stirring, near-liquidus casting, ultrasonic vibration, inclined plate, etc.
The principle of the mechanical stirring technology is that a stirring rod is extended into the liquid alloy for additional stirring, and shearing force is provided in the liquid alloy to break dendritic crystals or form nuclei explosively, so that semi-solid slurry of nearly spherical crystals is obtained. A number of studies have shown that: the stirring effect of mechanical stirring is not uniform in the processed semi-solid slurry, partial dead angles exist in a container of the slurry, the processing effect of mechanical stirring is influenced, and in the mechanical stirring process, because the temperature of the semi-solid slurry is overhigh, a stirring rod can be melted by alloy melt to pollute the prepared semi-solid slurry. Electromagnetic stirring is a semi-solid pulping technology developed on the basis of a mechanical stirring technology. The principle of the electromagnetic stirring technology is that induced current is generated in molten metal by the action of external electromagnetic force motion, and Lorentz force is generated between the induced current and an external magnetic field so as to make the molten metal move. However, the electromagnetic stirring has high energy consumption, complex process and high energy consumption, thereby causing the preparation cost. The ultrasonic vibration technology is to apply high-frequency ultrasonic waves with extremely high vibration frequency to the molten metal so as to refine grains and homogenize the structure. The essence of the method is that the molten metal moves by itself under the action of an external field, so that dendrites are eliminated and the structure is homogenized. The electromagnetic stirring and ultrasonic vibration technology realizes the breakage and refinement of crystal grains by adding non-contact acting force, and compared with the mechanical stirring technology, the two methods have more uniform treatment and more sufficient effect. But the disadvantages are the same as the electromagnetic stirring technology, the energy consumption is high and the cost is high. The three methods cannot enter large-scale industrial production, and the production efficiency and the product quality have larger gaps with European and American countries.
The tilting plate method generally refers to a technology for preparing low superheat tilting plate casting type slurry, and the basic principle of the method is that molten metal slightly higher than the liquidus temperature is poured onto a tilting plate, the alloy melt is subjected to a large supercooling degree by chilling of the tilting plate, a large amount of heterogeneous nuclei are formed on the surface of the tilting plate, and crystal nuclei are dissociated into the melt under the action of scouring and self-weight of the alloy melt, so that ideal semi-solid slurry is obtained. The method is easy to operate, good in grain refining effect and simple in equipment.
Generally speaking, the inclined plate type semi-solid slurry preparation technology has the advantages of short process, simple structure, low cost, high efficiency and the like, and has obvious advantages in preparation of high-temperature alloy semi-solid slurry compared with other semi-solid slurry preparation technologies.
Disclosure of Invention
Aiming at the problems in the prior art and the defects and the advantages of the inclined plate type semi-solid slurry preparation technology, the invention provides a split type totally-closed melt constraint flow induced nucleation semi-solid slurry preparation device; the device adopts a split structure, has simple structure and strong transportability, can be assembled with a horizontal die casting machine and a vertical extruder, not only greatly shortens the process flow, reduces the energy consumption and improves the economy, but also the prepared slurry has uniform tissue and rosette or equiaxial crystal grains; the device is realized by the following technical scheme:
a split type totally-enclosed melt constraint flow induced nucleation semi-solid slurry preparation device comprises an upper cooling plate 2 and a lower cooling plate 3, wherein a melt constraint flow induced nucleation channel is formed between the upper cooling plate 2 and the lower cooling plate 3 after the upper cooling plate and the lower cooling plate are combined, a feed inlet is formed at the upper end, a discharge outlet is formed at the lower end, and a material receiving crucible 18 is arranged right below the discharge outlet;
a plurality of water tanks are sequentially arranged on the upper cooling plate 2 from top to bottom, each water tank is correspondingly provided with a water inlet pipe and a water outlet pipe, flow regulating valves are arranged on each water inlet pipe and each water outlet pipe, the water inlet pipe of each water tank is communicated with a water inlet main pipeline, a water inlet flow main regulating valve is arranged on the water inlet main pipeline, the water outlet pipe of each water tank is communicated with a water outlet main pipeline, and a water outlet flow main regulating valve is arranged on the water outlet main pipeline; the arrangement of the water tank, the water inlet pipe and the water outlet pipe on the lower cooling plate 3 is the same as that of the upper cooling plate, and the length of the water pipe is adjusted according to actual needs;
the upper cooling plate 2 is fixed on the fixed plate 21 through an upper cooling plate support seat 20, the lower cooling plate 3 is fixed on the movable plate 4 through a lower cooling plate support seat 19, and the adjustment of the angle of the melt constraint induction nucleation channel is realized by replacing the upper cooling plate support seat 20 and the lower cooling plate support seat 19 with different models; one side of the movable plate 4 is provided with a power mechanism which drives the movable plate 4 to horizontally move so as to realize the opening and closing of the upper cooling plate 2 and the lower cooling plate 3.
Preferably, the power mechanism comprises a frequency modulation motor 11, a small belt pulley 10, a large belt pulley 8, a belt 9 and a ball screw 5, wherein the frequency modulation motor 11 is connected with the small belt pulley 10, the small belt pulley 10 is connected with the large belt pulley 8 through the belt 9, the large belt pulley 8 is connected with the movable plate 4 through the ball screw 5, and the movable plate 4 is driven to horizontally move through the rotation of the frequency modulation motor 11.
Preferably, the movable plate 4 of the present invention is disposed on the guide rail worktable 15, and the guide rail worktable 15 is provided with a track 13 for the movable plate 4 to move; one side of guide rail workstation 15 is equipped with fixing base 7, and fixing base 7 is used for fixed frequency modulation motor 11, little band pulley 10 and big band pulley 8, and frequency modulation motor 11 passes through frequency modulation motor fixed plate 12 to be fixed on fixing base 7, and guide rail workstation 15 supports through support 16, arranges workstation 17 in on, and frequency modulation motor 11, fixing base 7, connect material crucible 18 all arrange workstation 17 in.
Preferably, four guide pillars 6 are arranged on the movable plate 4 of the present invention, one end of each guide pillar 6 is fixedly connected with the fixed plate 21, the other end of each guide pillar 6 is fixedly connected with the fixed seat 7, the middle of each guide pillar 6 penetrates through the movable plate 4, a guide sleeve 14 is arranged at the joint of the movable plate 4 and the guide pillar 6, and the movable plate 4 can move back and forth on the guide pillars 6.
Preferably, the movable plate 4 of the invention is provided with 4 centrosymmetric limited blocks 1.
Preferably, the water inlet pipe and the water outlet pipe on the upper cooling plate penetrate through the fixing plate 21, the flow regulating valve is positioned outside the fixing plate, and the water inlet main pipe and the water outlet main pipe are also positioned outside the fixing plate 21; the inlet tube and the outlet pipe on the lower cooling plate 3 pass through the movable plate 4 and the fixed seat 7, the flow regulating valve is positioned outside the fixed seat 7, and the inlet header pipe and the outlet header pipe are also positioned outside the fixed seat 7.
Preferably, the flow range of a water inlet of the water inlet pipe of the upper cooling plate 2 is 10 ml/s-100 ml/s, and the flow range of a water outlet of the water outlet pipe is 5 ml/s-100 ml/s.
Preferably, the flow range of a water inlet pipe of the lower cooling plate 3 is 20 ml/s-200 ml/s, and the flow range of a water outlet pipe is 10 ml/s-200 ml/s.
Preferably, the clamp between the melt constraint induction nucleation device and the horizontal direction is 45-85 degrees.
The device of the invention is used as follows:
(1) alloy smelting: alloy smelting is carried out in an intermediate frequency furnace, the alloy melt is transferred into a tundish when the temperature of the alloy melt is 100-200 ℃ above the liquidus, and the alloy melt is refined, slag removed and the like;
(2) a melt constraint induced nucleation device: adjusting the rotating speed of a frequency modulation motor 11, driving an upper cooling plate 2 and a lower cooling plate 3 of the melt induced nucleation slurry preparation device by a movable plate 4, adjusting the water inlet flow of three independent water tanks arranged on the lower plate of the melt induced nucleation slurry preparation device, adjusting the water inlet flow of three independent water tanks arranged on the upper cooling plate of the melt constrained induced nucleation slurry preparation device, and adjusting the integral inclination angle of the melt induced nucleation slurry preparation device.
(3) Pouring the alloy melt obtained in the step (1) into a pouring channel to form stable and uniform laminar flow melt, generating severe chilling action on the lower part and the upper part of the melt induced nucleation slurry preparation device which is directly contacted with the melt to form semi-solid melt, and collecting the semi-solid melt in a material receiving crucible 18 under the constraint of the melt constrained induced nucleation device.
Compared with the prior art, the invention has the advantages that:
(1) when the device of the invention is used for preparing semi-solid pulping, when alloy liquid flows through a nucleation channel formed by the upper cooling plate and the lower cooling plate, the water flow of the three independent water tanks and the volume of cooling water in the three independent water tanks can be flexibly adjusted according to the chilling effect required by different types of alloys.
(2) The device adopts a totally-enclosed structure, the mold wall uniformly wraps the melt, the chilling effect on the periphery of the melt is equivalent, and the defects of unstable and uneven quality of semi-solid metal slurry caused by uneven oxidation and chilling action of the melt at the upper part in the slurry preparation process in the prior art are overcome; is suitable for preparing alloy slurry with different semi-solid temperatures.
(3) Under the combined action of the strong chilling action on the contact surface of the melt constraint induction nucleation device and the constraint action in the horizontal and vertical directions, crystal grains in the metal melt can be uniformly and rapidly nucleated, and the semi-solid slurry in a fine spherical shape or a rose shape can be prepared because different crystal grains can be sheared and collided with each other and roll along with the flowing process of the metal melt in the constraint induction nucleation device.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
FIG. 2 is a diagram of a melt confinement-induced nucleation channel of the present invention;
FIG. 3 is a schematic view of the casting process of the present invention.
1-a limiting block; 2-upper cooling plate; 3-lower cooling plate; 4 a movable plate; 5-ball screw; 6-guide pillar; 7-a fixed seat; 8-large belt wheel; 9-a belt; 10-small belt wheel; 11-a frequency modulation motor; 12-frequency modulation motor fixing plate; 13-a guide rail; 14-guide sleeve; 15-a rail table; 16-a scaffold; 17-a workbench; 18-a material receiving crucible; 19-lower cooling plate support seat; 20-mounting a cooling plate support seat; 21-fixing the plate.
Detailed Description
The present invention is further described in detail with reference to the following specific examples, but the scope of the present invention is not limited to the above description.
Example 1
A split type totally-enclosed melt constraint flow induced nucleation semi-solid slurry preparation device is shown in figures 1-2 and comprises an upper cooling plate 2 and a lower cooling plate 3, wherein a melt constraint flow induced nucleation channel is formed between the upper cooling plate 2 and the lower cooling plate 3 after the upper cooling plate and the lower cooling plate are combined, a feed inlet is formed at the upper end, a discharge outlet is formed at the lower end, and a material receiving crucible 18 is arranged right below the discharge outlet;
a plurality of water tanks are sequentially arranged on the upper cooling plate 2 from top to bottom, each water tank is correspondingly provided with a water inlet pipe and a water outlet pipe, flow regulating valves are arranged on each water inlet pipe and each water outlet pipe, the water inlet pipe of each water tank is communicated with a water inlet main pipeline, a water inlet flow main regulating valve is arranged on the water inlet main pipeline, the water outlet pipe of each water tank is communicated with a water outlet main pipeline, and a water outlet flow main regulating valve is arranged on the water outlet main pipeline; the arrangement of the water tank, the water inlet pipe and the water outlet pipe on the lower cooling plate 3 is the same as that of the upper cooling plate, and the length of the water pipe is adjusted according to actual needs;
the upper cooling plate 2 is fixed on the fixed plate 21 through an upper cooling plate support seat 20, the lower cooling plate 3 is fixed on the movable plate 4 through a lower cooling plate support seat 19, and the adjustment of the angle of the melt constraint induction nucleation channel is realized by replacing the upper cooling plate support seat 20 and the lower cooling plate support seat 19 with different models; one side of the movable plate 4 is provided with a power mechanism which drives the movable plate 4 to horizontally move so as to realize the opening and closing of the upper cooling plate 2 and the lower cooling plate 3.
The power mechanism of the invention is used for driving the movable plate 4 to move horizontally, and any power mechanism such as a hydraulic rod can be used as a first preferred embodiment of the invention: the power mechanism comprises a frequency modulation motor 11, a small belt pulley 10, a large belt pulley 8, a belt 9 and a ball screw 5, the frequency modulation motor 11 is connected with the small belt pulley 10, the small belt pulley 10 is connected with the large belt pulley 8 through the belt 9, the large belt pulley 8 is connected with the movable plate 4 through the ball screw 5, and the movable plate 4 is driven to horizontally move through rotation of the frequency modulation motor 11. Wherein, the movable plate 4 is arranged on the guide rail workbench 15, and the guide rail workbench 15 is provided with a track 13 for the movable plate 4 to move; one side of guide rail workstation 15 is equipped with fixing base 7, and fixing base 7 is used for fixed frequency modulation motor 11, little band pulley 10 and big band pulley 8, and frequency modulation motor 11 passes through frequency modulation motor fixed plate 12 to be fixed on fixing base 7, and guide rail workstation 15 supports through support 16, arranges workstation 17 in on, and frequency modulation motor 11, fixing base 7, connect material crucible 18 all arrange workstation 17 in. The specific working process is as follows: the frequency modulation motor 11 rotates to drive the small belt wheel 10 to rotate, the rotary motion is transmitted to the large belt wheel 8 through the belt 9, the large belt wheel 8 fixed on the fixed seat 7 through the bearing is connected with the ball screw 5 through threads, the rotation of the large belt wheel 8 is converted into the left and right linear motion of the movable plate 4, and the lower cooling plate 3 is fixed on the movable plate 4, so that the opening and closing of the melt constraint induction nucleation device can be realized.
As a second preferred embodiment of the present invention: in this embodiment, four guide pillars 6 are disposed on the movable plate 4, one end of each guide pillar 6 is fixedly connected to the fixed plate 21, the other end of each guide pillar 6 is fixedly connected to the fixed seat 7, the middle of each guide pillar passes through the movable plate 4, a guide sleeve 14 is disposed at the joint of the movable plate 4 and the guide pillar 6, and the movable plate 4 can move back and forth on the guide pillars 6; the alignment of the opening and closing process can be ensured through the clearance fit of the guide post 6 and the guide sleeve 14, and the bottom of the movable plate 4 is provided with a movable plate motion guide rail 13 for supporting the movable plate 4
As a third preferred embodiment of the present invention: this embodiment be equipped with 4 stopper 1 that are central symmetry on the fly leaf 4 to guarantee the extreme position of unscrewing the state.
As a fourth preferred embodiment of the present invention:
in this embodiment, 3 water tanks are respectively arranged on the upper cooling plate 2 and the lower cooling plate 3, a water inlet pipe and a water outlet pipe on the upper cooling plate 2 penetrate through the fixing plate 21, the flow regulating valve is positioned outside the fixing plate, and the water inlet header pipe and the water outlet header pipe are also positioned outside the fixing plate 21; the inlet tube and the outlet pipe on the lower cooling plate 3 pass through the movable plate 4 and the fixed seat 7, the flow regulating valve is positioned outside the fixed seat 7, and the inlet header pipe and the outlet header pipe are also positioned outside the fixed seat 7.
In this embodiment the cooling system is equipped with cooling plate No. 1 water tank, cooling plate No. 2 water tank, cooling plate No. 3 water tanks, cooling plate No. 1 water tank, cooling plate No. 2 water tanks, cooling plate No. 3 water tanks down on cooling plate 2 and cooling plate 3 down respectively.
Go up cooling plate No. 1 water tank inlet tube in the cooling plate No. 1 water tank and be rotational symmetry with last cooling plate No. 1 water tank outlet pipe and arrange, the accessible is gone up cooling plate No. 1 water tank water inlet flow control valve of cooling plate and is adjusted discharge size and water tank water storage capacity with last cooling plate No. 1 water tank delivery port flow control valve.
Go up cooling plate No. 2 water tank inlet tubes in the cooling plate No. 2 water tanks and be rotational symmetry with last cooling plate No. 2 water tank outlet pipes and arrange, the accessible is gone up cooling plate No. 2 water tank water inlet flow control valves of cooling plate and is gone up cooling plate No. 2 water tank delivery port flow control valves of cooling plate and adjust water flow size and water tank water storage capacity.
Go up No. 3 water tank inlet tubes of cooling plate in No. 3 water tanks of cooling plate and be rotational symmetry with No. 3 water tank outlet pipes of last cooling plate and arrange, No. 3 water tank water inlet flow control valves of cooling plate and No. 3 water tank delivery ports flow control valves of last cooling plate of accessible adjust discharge size and water tank water storage capacity.
Go up No. 1 water tank inlet tubes of cooling plate, go up No. 2 water tank inlet tubes of cooling plate, go up No. 3 water tank inlet tubes of cooling plate and divide by last cooling water inlet main line to through the total inflow of last cooling water inlet main line governing valve control.
Go up No. 1 water tank outlet pipe of cooling plate, go up No. 2 water tank outlet pipes of cooling plate, go up No. 3 water tank outlet pipes of cooling plate) assemble supreme cooling water outlet main pipe way to total water yield is controlled through last cooling water outlet main pipe way governing valve.
No. 1 water tank inlet tubes of lower cooling plate in No. 1 water tank of cooling plate down are rotational symmetry with No. 1 water tank outlet pipe of cooling plate down and arrange, and No. 1 water tank water inlet flow control valve of cooling plate and No. 1 water tank delivery port flow control valve of cooling plate adjust discharge size and water tank water storage capacity down under the accessible.
No. 2 water tank inlet tubes of lower cooling plate in No. 2 water tanks of cooling plate down are rotational symmetry with No. 2 water tank outlet pipes of lower cooling plate and arrange, and No. 2 water tank water inlet flow control valves of cooling plate and No. 2 water tank delivery port flow control valves of lower cooling plate adjust water flow size and water tank water storage capacity under the accessible.
No. 3 water tank inlet tubes of lower cooling plate in No. 3 water tanks of cooling plate down are rotational symmetry with No. 3 water tank outlet pipes of lower cooling plate and arrange, and No. 3 water tank water inlet flow control valves of cooling plate and No. 3 water tank delivery port flow control valves of lower cooling plate of accessible adjust discharge size and water tank water storage capacity.
No. 1 water tank inlet tube of lower cooling plate, No. 2 water tank inlet tubes of lower cooling plate, No. 3 water tank inlet tubes of lower cooling plate are shunted by lower cooling water inlet main pipe to total inflow through last cooling water inlet main pipe governing valve control.
Lower cooling plate No. 1 water tank outlet pipe, lower cooling plate No. 2 water tank outlet pipes, lower cooling plate No. 3 water tank outlet pipes assemble supreme cooling water outlet main pipe to through the total water yield of last cooling water outlet main pipe governing valve control.
The extruded upper cooling plate 2, the upper cooling plate No. 1 water tank, the upper cooling plate No. 2 water tank, the upper cooling plate No. 3 water tank, the lower cooling plate No. 1 water tank, the lower cooling plate No. 2 water tank and the lower cooling plate No. 3 water tank are made of 40Cr or 45 steel.
In the embodiment, the flow range of a water inlet pipe of the upper cooling plate 2 is 10 ml/s-100 ml/s, and the flow range of a water outlet pipe is 5 ml/s-100 ml/s; the flow range of a water inlet pipe of the lower cooling plate 3 is 20 ml/s-200 ml/s, and the flow range of a water outlet pipe is 10 ml/s-200 ml/s; in the actual use process, the flow of the cooling water is adjusted according to the specific requirements of the material performance so as to control the cooling speed.
As a fifth preferred embodiment of the present invention:
in the embodiment, the included angle between the melt constraint induced nucleation device and the horizontal plane ranges from 45 degrees to 85 degrees, the angle formed by the upper cooling plate 2 and the lower cooling plate 3 of the semi-solid slurry preparation device is adjusted through the upper cooling plate support seat 20 and the lower cooling plate support seat 19, and the upper cooling plate 2 and the lower cooling plate 3 are respectively fastened on the fixed plate 21 and the movable plate 4 through bolts.
In the semi-solid slurry preparation device, the upper cooling plate 2 and the lower cooling plate 3 are combined to form a semi-solid slurry nucleation and preparation channel, and alloy melt prepared in the medium-frequency induction furnace is conveyed into the channel to prepare the required semi-solid metal slurry and is collected by the material receiving crucible 18.
As a sixth preferred embodiment of the present invention:
the method for preparing the CuSn10P1 alloy semi-solid slurry by using the device disclosed by the invention specifically comprises the following steps as shown in FIG. 3:
(1) the upper cooling plate 2 and the lower cooling plate 3 are made of 40Cr or 45 steel, and the inner walls of the upper cooling plate and the lower cooling plate are coated with graphite paint. The upper cooling plate support base 20 and the lower cooling plate support base 19 are adjusted so that both the upper cooling plate 2 and the lower cooling plate 3 are at an angle of 80 ° to the horizontal plane.
(2) The rotating speed of the frequency modulation motor 11 is adjusted, and the movable plate 4 and the lower cooling plate 3 move linearly together towards the upper cooling plate 2 under the driving of the ball screw 5 until the combination is completed.
(3) The water inlet flow main adjusting valve of the upper cooling plate is opened, the water inlet flow adjusting valve of the No. 3 water tank of the upper cooling plate is opened, the water inlet flow of the No. 3 water tank of the upper cooling plate is adjusted to 25ml/s, the water inlet flow adjusting valve of the No. 2 water tank of the upper cooling plate is opened, the water inlet flow of the No. 2 water tank of the upper cooling plate is adjusted to 30ml/s, the water inlet flow adjusting valve of the No. 1 water tank of the upper cooling plate is opened, and the water inlet flow of the No. 1 water tank of the upper cooling plate is adjusted to 40 ml/s.
(4) And opening the main water flow regulating valve of the upper cooling plate, opening the water flow regulating valve of the No. 3 water tank of the upper cooling plate, regulating the water yield of the No. 3 water tank of the upper cooling plate to 25ml/s, opening the water flow regulating valve of the No. 2 water tank of the upper cooling plate, regulating the water yield of the No. 2 water tank of the upper cooling plate to 30ml/s, opening the water flow regulating valve of the No. 1 water tank of the upper cooling plate, and regulating the water yield of the No. 1 water tank of the upper cooling plate to 40 ml/s.
(5) The water inlet flow main regulating valve of the lower cooling plate is opened, the water inlet flow regulating valve of the No. 3 water tank of the lower cooling plate is opened, the water inlet flow of the No. 3 water tank of the lower cooling plate is regulated to 50ml/s, the water inlet flow regulating valve of the No. 2 water tank of the lower cooling plate is opened, the water inlet flow of the No. 2 water tank of the lower cooling plate is regulated to 60ml/s, the water inlet flow regulating valve of the No. 1 water tank of the lower cooling plate is opened, and the water inlet flow of the No. 1 water tank of the lower cooling plate is regulated to 65 ml/s.
(6) And opening a water outlet flow main adjusting valve of the lower cooling plate, opening a water outlet flow adjusting valve of the No. 3 water tank of the lower cooling plate, adjusting the water outlet flow of the No. 3 water tank of the lower cooling plate to 50ml/s, opening a water outlet flow adjusting valve of the No. 2 water tank of the lower cooling plate, adjusting the water outlet flow of the No. 2 water tank of the lower cooling plate to 60ml/s, opening a water outlet flow adjusting valve of the No. 1 water tank of the lower cooling plate, and adjusting the water outlet flow of the No. 1 water tank of the lower cooling plate to 65 ml/s.
The CuSn10P1 alloy prepared by melting in an intermediate frequency furnace is uniformly mixed with a melt with a liquid phase temperature of 1080 ℃ and a solidus temperature of 843 ℃ and a low superheat degree.
The CuSn10P1 alloy melt prepared in the medium-frequency induction furnace is poured into a nucleation channel formed by an upper cooling plate 2 and a lower cooling plate 3, and flows into the material receiving crucible 18 under the constraint of the melt constraint induction nucleation channel.
In the continuous preparation process of the CuSn10P1 semisolid slurry, the surface temperature of the melt induced nucleation channel can be controlled by accurately controlling the water flow of the water inlet pipe and the water outlet pipe of the three water tanks independently arranged on the upper cooling plate 2 and the lower cooling plate 3 of the device, and the continuous temperature rise of the contact surface of the melt induced nucleation channel and the CuSn10P1 alloy melt is avoided. The continuous strong chilling effect on the CuSn10P1 alloy melt can be realized by the melt constraint induction nucleation channel surface in the upper, lower, left and right directions, the rapid nucleation of crystal grains in the CuSn10P1 alloy melt is ensured, and the semi-solid slurry with good spheroidizing effect, uniform tissue and fine granularity is continuously obtained.
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