CN1278803C - Apparatus and process for preparing alloy sheet - Google Patents
Apparatus and process for preparing alloy sheet Download PDFInfo
- Publication number
- CN1278803C CN1278803C CN 200310123402 CN200310123402A CN1278803C CN 1278803 C CN1278803 C CN 1278803C CN 200310123402 CN200310123402 CN 200310123402 CN 200310123402 A CN200310123402 A CN 200310123402A CN 1278803 C CN1278803 C CN 1278803C
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- Prior art keywords
- alloy
- loading head
- container
- liquation
- cooling
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- 239000000956 alloy Substances 0.000 title claims abstract description 57
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000011261 inert gas Substances 0.000 claims abstract description 7
- 238000010298 pulverizing process Methods 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims description 10
- 230000006641 stabilisation Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 150000002910 rare earth metals Chemical group 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 3
- 230000007723 transport mechanism Effects 0.000 abstract 3
- 239000000155 melt Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- -1 rare earth Chemical class 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The present invention relates to a method and a device for producing alloy slices. The method comprises the following steps: leading alloy melt liquid to flow to the surface of a cooling drum in order to form into a thin slice band; cooling the alloy slice band continuatively; cooling and pulverizing the alloy slice continuatively when delivered to a loading head; leading the alloy slice to enter a discharging mechanism from the loading head and to cool continuatively under the protection of inert gas. The device mainly comprises a container, a liquid flow stabilizing mechanism, the cooling drum, a transport mechanism, the loading head and the discharging mechanism, wherein the container is arranged in an induction heating coil, the liquid flow stabilizing mechanism is in a barrel shape and is arranged below the opening of the container, and the cooling drum is positioned on the position in which can receive the melt liquid flowing down from a bottom panel of the liquid flow stabilizing mechanism and moves axially and reciprocally. The transport mechanism is arranged below the cooling drum, the loading head is a double-layer water-cooling funnel-shaped container and is arranged below the transport mechanism, and the discharging mechanism is arranged below the loading head and is provided with an upper and a lower valves. In addition, a tapered tube filled with inert gas is arranged between the two valves.
Description
Technical field
The present invention relates to the preparation facilities and the manufacturing process thereof of alloy sheet, exactly, is to contain the alloy of easy oxidation metals such as rare earth, to cool off fast through vacuum induction founding and multisection type, discharge the device and the technology of alloy sheet in batches in founding.
Background technology
Rare earth metal and alloy thereof be very easily oxidation usually, the many employings of the alloy sheet preparation vacuum induction founding of such material, and the preparation facilities of conventional thin sheet alloy (sees the flat 11-177426 patent specification of Japanese Patent Application for details) as shown in Figure 1.Among Fig. 1, because having, cylinder 5 do not move axially, for making liquation 2 obtain evenly cooling fast at cylinder 5 whole width faces, must there be liquation to store in the tundish 4, so that slow down flow velocity, make liquation be able to evenly launch at the nozzle width face, this process causes the casting latter end, liquation is easy to solidify and plug nozzle at the nozzle place, thus influence subnormal use down.Certainly can adopt to the mode of tundish heating and avoid nozzle to stop up, can cause the tundish complex structureization like this; On the other hand, although cylinder surface is to be made by the good material of thermal conductivity, prolong with casting time, the cylinder surface heat of rotation has little time to distribute at a high speed, temperature can slowly raise, and the liquation of casting can not get identical cooling condition before and after causing, thereby influences the homogeneity of alloy thin band.
In addition in conventional apparatus; the container 7 of alloy sheet is collected in the bottom; although can cool off it by water cooling plant, its inner alloy sheet still can not get abundant cooling, and temperature is still very high; to easy oxide alloy such as rare earths; very easily oxidation in producing process waits for that it cools down naturally, needs the long period again; scale is produced continuously, and efficient is lower.
Summary of the invention
The object of the present invention is to provide a kind of alloy sheet preparation facilities and use this device to prepare the method for alloy sheet.Use device provided by the invention to prepare alloy sheet, cast article can fully be cooled off and reached reasonable temperature before discharge, is particularly suited for the preparation of easy rare earth oxide alloy sheet; In the time of this external founding, cast article in advance can be passed in batches next procedure, production efficiency is significantly improved becomes possibility; The present invention moves around cylinder vertically in addition, and cylinder surface is recycled, and has simplified liquid stream stabilisation mechanism on the one hand, and the cylinder working face can fully be cooled off, and is easier to produce the alloy sheet of homogeneous thickness.
Description of drawings
Fig. 1 is a conventional alloys web preparation device simplified schematic diagram.
Fig. 2 prepares a kind of form simplified schematic diagram of alloy sheet for apparatus of the present invention.
Fig. 3 is water-cooled transfer system provided by the invention, loading head and discharge mechanism simplified schematic diagram.
Fig. 4 is that liquid provided by the invention flows stabilisation mechanism simplified schematic diagram.
Fig. 5 is chilling roll 5a of the present invention and driving mechanism schematic diagram.
The specific embodiment
Below in conjunction with schematic diagram alloy sheet preparation facilities provided by the invention is described, and uses the concrete example of this device preparation alloy sheet technology.
When consulting Fig. 1,, accommodate container 3 open topped of alloy liquation, guiding gutter is arranged, do not have other specific (special) requirements on the profile in the toppling direction upper edge please in conjunction with consulting Fig. 2; As the device of producing the easy oxide alloy thin slice of this class of rare earth permanent magnet, whole founding chamber vacuum-pumping, and can charge into protective gas (10
3Pa～10
4Pa), container 3 is generally skittele pot, and places in the load coil 1.
Driving mechanism 2 as container is slowly evenly toppled over can have multiple choices.The centering small-scale production, can adopt the action bars of hydraulic motor or air pump control or the manual operation control lever of economy simple in structure respectively, by the observation window on the founding chamber enclosure, at any time observe liquation post thickness and liquid stream stabilisation mechanism 4 inner melt face height, in time adjust and topple over speed, to reach to chilling roll 5 purpose of weight feed liquation roughly.
To extensive (more than the 300Kg) serialization production, can adopt programmable device to control the infinite variable speed motor driving, topple over speed program and determine in advance well by test according to required flow and container shapes; Speed program is made of segmentation speed and corresponding time and hop count, toppling process can be divided into 50 sections at most, can make container stop certain hour in arbitrary inclination position, in the process of casting abnormal conditions is arranged, and can trigger emergency procedure at any time, and container is restored or the like.To a certain definite shapes of containers and flow-control requirement, the corresponding speed program of toppling over can rule of thumb be set, detect actual flow over time by device, veteran personnel just can reach the flow-control requirement through 2～3 times adjustment.Adopt this structure, water conservancy diversion plays in 4 in liquid stream stabilisation mechanism.
Liquid stream stabilisation mechanism 4 is made up of 4a and 4b two parts.4a is the barrel containers of bottom opening, plays water conservancy diversion and throttling, can be taper, circle and different shape such as square; Bottom surface sections is gradient, and opening can be arbitrary shapes such as circular hole, narrow slit, and its size is determined according to the flow needs; It is the container of circular hole that present embodiment adopts conical lower portion, and liquation has only minute quantity to store in the 4a bottom surface sections usually, can not stop up usually.4b is arranged on below the 4a, is made up of both sides panel, a bottom panel and last plate washer, and bottom panel top is downward-sloping trapezoidal (referring to Fig. 4), and liquation is freely sprawled, and the bottom is the rectangle of level, the liquation flow velocity is slowed down and more becomes even; Because cylinder 5 can move back and forth vertically (about cylinder 5, see following description for details), the 4b bottom opening can be very wide, usually tundish is for making liquation in the whole width face of cylinder uniform spreading, liquation holdup time in tundish is longer, be easy to take place spray nozzle clogging, perhaps need to set up heater to liquid such as tundish stream stabilisation mechanism.With toppling over of container 3, liquation flows to 4b after 4a guiding throttling, freely launch in the 4b bottom surface sections, flows to uniformly and stably on the chilling roll 5 then.
Please in conjunction with consulting Fig. 5, be chilling roll 5, its surface is to be made by thermal diffusivity good Cu or Cu alloy material, cylinder 5a and the 5b of mechanism that head roll 5a is rotated are installed on the dull and stereotyped 5d, there are horn ring 5e and track to join below the dull and stereotyped 5d, one reversing motor 5c links to each other with above-mentioned dull and stereotyped 5d by screw mandrel, this reversing motor 5c sends commutation signal and from trend by travel switch, along the guide rail front-rear reciprocation movement on the base, also possesses the function that moves back and forth vertically with control 5d when so just making cylinder 5a rotation.In actual the use, can make whole reciprocating driving mechanism that various ways can be arranged, be known technology, but the automatic reverse motor of middle finger of the present invention be just wherein a kind of.In the conventional apparatus, be able to uniform spreading for making liquation at cylinder surface, drum length is restricted, and in the direct casting process, the cylinder surface temperature can slowly raise, thereby the liquation cooling condition is changed and has influence on the homogeneity of alloy sheet thickness structure; Adopt the present invention, when tundish structure was simplified, cylinder 5a length was unrestricted, and 5a moves back and forth vertically with cylinder, when cylinder 5a is fully used on the surface, also has time enough to be cooled off; As the modified of said structure, can also cooling device be set by the cylinder gyroaxis, cylinder surface is forced cooling; Use device provided by the invention, can make the alloy liquation obtain more uniform cooling condition, be convenient to prepare the more alloy thin band of homogeneous thickness structure at cylinder surface.
Alloy thin band in cylinder 5a surface solidification, (or be arranged on cylinder forward position scraper plate 6b effect) breaks away from cylinder surface under cylinder revolution centrifugal action, be provided with water-cooled plate washer 6a (6 among Fig. 1) in the place ahead that strip falls, strip is ground into alloy sheet, as required, plate washer can have polylith, makes strip obtain the chance that repeatedly collision is pulverized in dropping process.
Please in conjunction with consulting Fig. 3, the transfer system 7 under alloy sheet is set at is collected, and is sent to funnel-form loading head 8 then.Transfer system 7 is made up of conveyer belt 7a, driving controlling organization 7b and cooling device 7c, conveyer belt 7a is made by the good material of thermal conductivity, can be designed to different length according to the cooling needs, there is plate washer the band both sides, following water cooling plant can give good cooling to conveyer belt, be collected in the skim alloy sheet on the conveyer belt 7a like this, in transport process, can obtain cooling fully fast.
Loading head 8 mainly is made up of the sensing and controlling devices such as pressure sensor (not shown) of umbrella device 8a, double-deck water-cooled funnel-shaped container 8b and loading head bottom; From the alloy sheet that conveyer belt 7a falls, the umbrella device 8a that is provided with through funnel-form loading head 8 central authorities obtains further to collide when pulverizing, and slides in the process of bottom the chance that can further be cooled off along container water-cooled inwall 8b.
Vacuumize and charge into an amount of inert gas (negative pressure) in advance bullet 9a and accumulator 9d, when alloy sheet in the loading head reach a certain amount of after, its underpart pressure sensor sends the discharge signal, discharging control system drives the operated pneumatic valve action, valve 9b is opened, alloy sheet is discharged in the bullet 9a temporary earlier, and behind the relay time-delay certain hour, last valve 9b closes, lower valve 9c opens, pneumatic hammer 9f work, product is discharged in the accumulator 9d subsequently, and valve 9c closed under discharge finished; Like this in founding, can pass on next procedure by the alloy sheet that accumulator 9d will drop to reasonable temperature in batches, realize continuous large-scale production.
The discharging control system that the present invention adopts is ready-made commodity, and its structure is a known technology, to those skilled in the art, is the technology that is readily appreciated that, does not therefore provide it with reference to the accompanying drawings, describes only more.
Conventional apparatus is that collection container 7 has been placed on the water-cooled casting chamber bottom surface sections, and the alloy sheet of waiting to collect in the container reaches a certain amount of back by the respective channel discharge, and the interior product temperature of collection container this moment is also quite high; For the alloy product of easy oxidations such as rare earth, this just requires the airtight performance of gatherer fairly good, and the filling with inert gas protection, by alternate manner it is cooled off before transferring next procedure to; Perhaps indoor in founding, the wait product is discharged after the long period cools off naturally, and efficient is lower for the purpose of the present invention mutually.
Below be to utilize apparatus of the present invention to prepare the embodiment of alloy sheet.
Nd:58Kg, Pr:3Kg, Dy:1Kg, BFe alloy 12Kg and electrical pure iron Fe126Kg are total to the 200Kg raw material put into founding chamber vessels crucible, in specified vacuum and negative pressure (about 10
4Pa) induction melting under uses the fluid motor-driven action bars slowly to topple over container, regulates the liquation quantity delivered at any time by observation window, liquation evenly flows on the chilling roll through liquid stream stabilisation tundish, the wide 800mm of cylinder, the wide 150mm of 4b bottom opening, drum rotation speed 3600 commentaries on classics/hour, drum shaft is to movement velocity 0.45 meter per second, transmit 3 meters of belt lengths, belt speed 0.11 meter per second, thin slice average thickness 0.228mm, thickness distribution width (6 σ) is 18%, about 65 degree of alloy sheet temperature in the accumulator.
Claims (9)
1. alloy sheet preparation method, its key step is:
A) alloy molten is become liquation;
B) liquation flow to chilling roll surface and forms the thin slice band, and this chilling roll moves back and forth in rotation vertically;
C) after alloy sheet band disengaging chilling roll is pulverized, continue in transport process, to obtain cooling;
D) alloy sheet continues cooling and pulverizing when being sent to loading head;
E) alloy sheet enters discharge mechanism from loading head, continues cooling under inert gas shielding.
2. the method for claim 1 is characterized in that, described alloy is rare earth alloys.
3. a device of implementing the described method of claim 1 is characterized in that, mainly includes:
One accommodates the container of alloy liquation, places in the load coil, and this container has guiding gutter in the toppling direction upper edge;
One liquid stream stabilisation mechanism is made of the barrel containers of bottom opening and the bottom panel that is arranged on below the bottom opening, and the upper end of this barrel containers places the vessel port below of accommodating the alloy liquation;
One chilling roll, be arranged in the position that to accept the liquation that liquid stream stabilisation mechanism bottom panel flows down, its surface is to be made by Cu or Cu alloy material, this cylinder is rotated by a motor-driven cylinder, this cylinder and motor are installed on the flat board, have horn ring and track to join below this flat board, a reversing motor is dull and stereotyped reciprocating by screw mandrel control;
One connecting gear places the below of chilling roll;
One loading head is double-deck water-cooled funnel-shaped container, places the below of connecting gear;
One discharge mechanism places the below of loading head, is provided with upper and lower two valves, and the conical pipe of a filling inert gas is arranged between two valves.
4. device as claimed in claim 3 is characterized in that, accommodates the container of alloy liquation and topples over speed by hydraulic motor or air pump control.
5. device as claimed in claim 3 is characterized in that, the bottom panel of liquid stream stabilisation mechanism is made up of both sides panel, a bottom panel and last plate washer, and bottom panel top is downward-sloping trapezoidal shape.
6. device as claimed in claim 3 is characterized in that reversing motor sends commutation signal and automatic reverse by travel switch.
7. device as claimed in claim 3 is characterized in that, is provided with water cooling equipment below the conveyer belt in the connecting gear.
8. device as claimed in claim 3 is characterized in that central authorities of loading head import department are provided with the umbrella link stopper.
9. device as claimed in claim 3 is characterized in that, has additional the vibration pneumatic hammer on the outer wall of discharge mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310123402 CN1278803C (en) | 2003-12-26 | 2003-12-26 | Apparatus and process for preparing alloy sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310123402 CN1278803C (en) | 2003-12-26 | 2003-12-26 | Apparatus and process for preparing alloy sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1634674A CN1634674A (en) | 2005-07-06 |
| CN1278803C true CN1278803C (en) | 2006-10-11 |
Family
ID=34844767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310123402 Expired - Lifetime CN1278803C (en) | 2003-12-26 | 2003-12-26 | Apparatus and process for preparing alloy sheet |
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| Country | Link |
|---|---|
| CN (1) | CN1278803C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342594B (en) | 2007-07-12 | 2011-04-06 | 北京中科三环高技术股份有限公司 | Manufacturing apparatus for alloy slice |
| CN101637823B (en) * | 2008-07-28 | 2013-01-02 | 宝山钢铁股份有限公司 | Method and device for preparing metal powder |
| CN103240397A (en) * | 2013-05-27 | 2013-08-14 | 江西江钨稀有金属新材料有限公司 | Forced heat exchange method and device |
| CN104416162B (en) * | 2013-09-03 | 2016-08-17 | 中国科学院宁波材料技术与工程研究所 | A kind of alloy rapid solidification equipment and autocontrol method thereof |
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2003
- 2003-12-26 CN CN 200310123402 patent/CN1278803C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1634674A (en) | 2005-07-06 |
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Granted publication date: 20061011 |
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