CN103170605A - Preparation method and preparation device of amorphous alloy fine part based on vacuum suction casting - Google Patents
Preparation method and preparation device of amorphous alloy fine part based on vacuum suction casting Download PDFInfo
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- CN103170605A CN103170605A CN2013100808837A CN201310080883A CN103170605A CN 103170605 A CN103170605 A CN 103170605A CN 2013100808837 A CN2013100808837 A CN 2013100808837A CN 201310080883 A CN201310080883 A CN 201310080883A CN 103170605 A CN103170605 A CN 103170605A
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Abstract
The invention discloses a preparation method of an amorphous alloy fine part. The preparation method of the amorphous alloy fine part comprises the following steps: various types of pure metal needed by amorphous alloy is prepared according to a proportion to form raw materials of the amorphous alloy and is arranged in a vacuum melting cavity of a vacuum arc suction casting furnace; a silicon mold used for preparing the amorphous alloy fine part is prepared and arranged into a copper mold, an inner cavity of the copper mold is a through hole, and the copper mold is arranged in a lower cavity of the vacuum arc suction casting furnace; the vacuum melting cavity is pumped to be vacuum and is filled with protective gas, the raw materials of the amorphous alloy are melted, and melted amorphous alloy liquid is sucked into the silicone mold from the vacuum melting cavity through the through hole by lowering the pressure inside the copper mold; and the amorphous alloy fine part is obtained after demolding. The invention further discloses a preparation device of the amorphous alloy fine part. By means of vacuum suction casting, the defects that the amorphous alloy melt is poor in fluidity and difficult in mold filling are overcome, and the prepared amorphous alloy fine part is high in quality, and free of the defects like air holes.
Description
Technical field
The invention belongs to the amorphous alloy material preparing technical field, be specifically related to a kind of preparation method and device of non-crystaline amorphous metal micro-workpiece.
Background technology
Non-crystaline amorphous metal is the great discovery of 20th century Material Field, and the material internal atomic arrangement is the unordered shot-range ordered structure of long-range, there is no the defectives such as dislocation and crystal boundary.The structure of this uniqueness makes amorphous alloy material have the performance of many excellences, as high strength, hardness, wearability, corrosion resistance, excellent soft magnetism etc., be widely used in the fields such as military affairs, little/as to receive that manufacturing, sports equipment, optical communication, light are integrated, laser, novel solar battery, high magnetic and power transmission material.Non-crystaline amorphous metal is new construction material and the functional material that has future, good scientific research value is not only arranged but also also have huge market prospects.
Non-crystaline amorphous metal has the mechanical property of a series of excellences such as high strength, high rigidity, low Young's modulus and self-sharpening, is widely used in preparing micro-workpiece.Micro-workpiece refers to the part that size is little, the part of micron order or following size normally, and its structure needs microscope to observe.At present, non-crystaline amorphous metal is made the preparation of micro-workpiece and is usually adopted hot forming, namely utilizes its superplasticity to adopt heat pressing process to form to it.At first hot forming is made part needs original material is made non-crystaline amorphous metal, again non-crystaline amorphous metal is carried out hot forming, the method needs two steps, indispensable, need to expend a large amount of time and the energy cost is high, and may cause the problem of its secondary oxidation on the step of hot forming, its construction value is limited can not get sufficient utilization.
Summary of the invention
One of purpose of the present invention is to propose a kind of preparation method of the non-crystaline amorphous metal micro-workpiece based on suction pouring, the method need not first to make two steps of non-crystaline amorphous metal hot repressing, thereby greatly shorten the required time and efforts of processing technology, and avoided the problem of secondary oxidation, be suitable for producing in enormous quantities.
Realize that the concrete technical scheme that this purpose of the present invention adopts is as follows:
A kind of preparation method of non-crystaline amorphous metal micro-workpiece, it utilizes suction pouring to realize the preparation of non-crystaline amorphous metal micro-workpiece, and the method specifically comprises:
The various simple metal that non-crystaline amorphous metal is required are mixed with the non-crystaline amorphous metal raw material in proportion, and are placed in described vacuum arc and inhale in the vacuum molten chamber of casting stove;
Preparation is placed in this silicon mould the copper mould that inner die cavity is through hole for the preparation of the silicon mould of non-crystaline amorphous metal micro-workpiece, and described copper mould is placed in the lower impressions that vacuum arc is inhaled the casting stove;
Vacuum molten chamber is vacuumized and is filled with protection gas, the non-crystaline amorphous metal raw material are carried out melting, and by reduce air pressure in copper mould make non-crystaline amorphous metal liquation after melting by described through hole by in the molten chamber suction of vacuum silicon mould;
The demoulding can obtain the non-crystaline amorphous metal micro-workpiece.
As present invention further optimization, described silicon mould is placed in vertically apart from the 1/3-1/2 place of copper mould through hole upper end.
As present invention further optimization, described copper mould is comprised of two halves copper mould piece, and having the cross section on half and half copper mould piece is semicircular groove, and the groove combination of two halves copper mould piece forms the through hole of copper mould.
As present invention further optimization, the described protection gas that is filled with is Ar.
As present invention further optimization, can carry out repeatedly melting to described non-crystaline amorphous metal raw material, to obtain uniform alloying component.
As present invention further optimization, in described knockout course, the copper mould die sinking, the bar that will comprise the non-crystaline amorphous metal micro-workpiece takes out, and silicon mould two ends bar is excised and is ground to expose the silicon mould both ends of the surface, the silicon mould that will expose again and inner micro-workpiece thereof carry out ultrasonic cleaning, namely obtain the non-crystaline amorphous metal micro-workpiece after the corrosion silicon mould.
Another object of the present invention also is to provide a kind of preparation facilities of non-crystaline amorphous metal micro-workpiece, and it comprises:
The suction pouring stove, it comprises for the molten chamber of the vacuum of smelting amorphous alloy raw material and melts with this vacuum the lower impressions that the chamber communicates;
Be placed in described lower impressions copper mould, its inner die cavity is through hole, and this copper mould melts the chamber by described through hole and vacuum and communicates;
Silicon mould, it is placed in the through hole of described copper mould, is used for the moulding of non-crystaline amorphous metal micro-workpiece;
Vacuum molten chamber be smelted into the non-crystaline amorphous metal material solution suck silicon mould in copper mould by this through hole in moulding, can obtain described non-crystaline amorphous metal micro-workpiece after the demoulding.
As present invention further optimization, described as present invention further optimization, described silicon mould is placed in vertically apart from the 1/3-1/2 place of copper mould through hole upper end.
As present invention further optimization, described copper mould is comprised of two halves copper mould piece, and having the cross section on half and half copper mould piece is semicircular groove, and the groove combination of two halves copper mould piece forms the through hole of copper mould.
As present invention further optimization, this device also comprises for vacuum is melted mechanical pump and the molecular pump that the chamber vacuumizes, is used for the electric welding machine and the arc generator that carry out melting.
In the present invention, can become some centers that the silicon mould of little part shape is arranged by silicon wafer to manufacture, then with cutting machine, whole silicon mould be cut into some little moulds, silicon mould is ground to form through hole.The copper mould of preparation clamping silicon mould:
In the present invention, copper mould is comprised of two semicolumns, and corresponding screw thread is arranged on each semicolumn, during use, two semicolumns is worked good again with clamp nut, that it is fastening, and the copper mould profile coordinates with the die cavity that vacuum arc is inhaled the casting stove.Be provided with the structure of clamping silicon mould in the inner die cavity of copper mould, the position of silicon mould in the copper mould through hole can the through hole for 1/2-1/3 place, distance copper mould upper end in.
With two semicolumns separately, silicon mould is placed on clamping position during use, then with two fastening good getting final product of semicolumn.When inhaling casting, the non-crystaline amorphous metal of molten state is inhaled into the copper mould die cavity and is full of the cooling rear formation part of silicon mould, the copper mold prodigiosin of clamping silicon mould directly is prepared into the non-crystaline amorphous metal micro-workpiece with the original material of non-crystaline amorphous metal, two steps of traditional heat pressure forming process are reduced to a step, be suitable for various non-crystaline amorphous metals and can produce in enormous quantities, greatly having shortened part, to prepare required time and efforts cost low.
In the present invention, in the demoulding of non-crystaline amorphous metal micro-workpiece cleaning, first take out copper mould, the bar that comprises the non-crystaline amorphous metal micro-workpiece of inside is taken out, silicon mould two ends bar is excised and is ground to expose the silicon mould both ends of the surface.To expose silicon mould and inner micro-workpiece is put into the test tube that KOH solution is housed, test tube will be put into the speed that the ultrasonic cleaning instrument is accelerated the corrosion silicon mould, at last the non-crystaline amorphous metal micro-workpiece that obtains totally be got final product with alcohol wash.
Preparation method of the present invention is reduced to a step with two steps of traditional heat pressure forming process, avoided secondary oxidation, the original material of non-crystaline amorphous metal directly can be prepared into the non-crystaline amorphous metal micro-workpiece, be suitable for various non-crystaline amorphous metals and can produce in enormous quantities, greatly having shortened part, to prepare required time and efforts cost low.The method is applicable to multiple non-crystaline amorphous metal, and the accessory appearance of producing is smooth, and size is accurate, can promote the using value of non-crystalline material on engineering.
Description of drawings
Fig. 1 is suction pouring equipment schematic diagram.
Fig. 2 is the structure chart of copper mould, is (a) the copper mold inner chamber tool schematic diagram of 6mm for internal diameter, (b) for internal diameter is the copper mould inner chamber schematic diagram of 3mm.
Fig. 3 is the assembling schematic diagram corresponding to the silicon mould of Fig. 2 and copper mould, and I is copper mould, and II is silicon mould.
The product pictorial diagram of Fig. 4 for obtaining according to this preparation method (a) for inhaling casting part complete graph, (b) is partial enlarged drawing.
In figure, 1 cuts off pump, 2 molecular pumps, and 3 mechanical pumps, 4 vacuum melt the chamber, 5 lower impressions, 6 copper moulds, 7 arc generators, 8 dc welding machines, 9 high pressure Ar gas cylinders, 10 non-crystaline amorphous metal original materials.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Present invention is described to select the preparation of the little gear part of a kind of typical non-crystaline amorphous metal in the present embodiment, but the method is not limited thereto kind of a non-crystaline amorphous metal, also be not limited to this kind part or size, the non-crystaline amorphous metal of other any kind and part all are applicable to method of the present invention.
Select highly purified 4 kinds of simple metal in the present embodiment, namely Zr, Cu, Ni, Al are as the raw material of non-crystaline amorphous metal.Be that 55, Cu is that 30, Al is that 10, Ni is the Zr of 5 ratio allotment with atomic percent: Zr
55Cu
30Al
10Ni
5Total raw material (if for example total raw material is 30g, wherein Zr20.103g, Cu7.638g, Ni1.083g, Al1.176g), put into vacuum arc furnace ignition molten chamber 4.
Make again the silicon mould (for example this gear parameter can be M=0.1mm, Z=20) of the little gear part of non-crystaline amorphous metal.Can become some centers that the silicon mould of little part shape is arranged by silicon wafer to manufacture, then with cutting machine, whole silicon mould be cut into some little moulds, silicon mould is ground to form through hole.In the present embodiment, the final preferred external diameter of silicon mould is 6mm, also can be 3mm or other sizes, the columniform silicon chip of thickness 0.5～1mm, and the centre of this circle silicon chip is the mould of part shape.Can realize by this process can the various required silicon moulds of large batch of production.
In the present embodiment, copper mould is preferably length 200mm, and external diameter 60mm's is cylindrical.Copper mould is comprised of two semicolumns, corresponding screw thread is arranged on each semicolumn, work good again two semicolumns with clamp nut, that it is fastening during use, the copper mould profile coordinates with the die cavity that vacuum arc is inhaled the casting stove, inner die cavity internal diameter should be mutually and can be 3mm or 6mm, is provided with the structure of clamping silicon mould in inner die cavity.The position of silicon mould in the copper mould through hole can the through hole for 1/2-1/3 place, distance copper mould upper end in, for example at 1/3 place of copper mould upper end, the interior die cavity of copper mould is shown in Figure 2.
Copper mould is split up into two semicylinders (internal diameter is preferably 6mm, also can be other sizes), this silicon mould is packed into, then copper mould is fastening as a whole, the copper mould that installs silicon mould is packed in lower impressions 5.
By adopting clamping silicon mould in copper mould, and be placed in the relevant position, can can prepare the non-crystaline amorphous metal micro-workpiece so that two steps of traditional heat pressure forming process are reduced to a step, be suitable for various non-crystaline amorphous metals and can produce in enormous quantities, greatly having shortened part, to prepare required time and efforts cost low.
During preparation, at first silicon mould is packed in copper mould, it is fastening good that two semicolumns are coordinated, then the copper mould that will the install silicon mould lower impressions 5 of packing into, and the raw material that prepare are put into vacuum arc furnace ignition molten chamber 4.The good seal vacuum chamber utilizes mechanical pump 3 and molecular pump 2 that the air in vacuum chamber 4 is evacuated to inner air pressure lower than 5x10
-3Pa, then be that 99.999% Ar gas makes air pressure inside reach 1 atmospheric pressure being filled with purity, then taking out Ar gas, be filled with again Ar gas, repeatedly wash the chamber 2 times, be filled with for the third time Ar gas to 1 atmospheric pressure and get final product, the purpose of this step is constantly to dilute the air that may exist in vacuum chamber, prevents that in follow-up melting process, non-crystaline amorphous metal is oxidized.Open DC welder 8, first with Ti ball melting 2min, to absorb the oxidizing gas that may exist in the working chamber, in order to obtain uniform alloying component, with non-crystaline amorphous metal raw material melt back 4～5 times, be tending towards even with the composition of guaranteeing alloy.Open the valve III air pressure in copper mould 6 is reduced rapidly, the non-crystaline amorphous metal liquation is sucked the forming part that obtains in copper mold 6 on inner silicon mould.
Take out copper mould, the bar that comprises the non-crystaline amorphous metal micro-workpiece of inside is taken out, silicon mould two ends bar is excised and is ground to expose the silicon mould both ends of the surface.To expose silicon mould and inner little shape part is put into the test tube that KOH solution is housed, test tube will be put into the speed that the ultrasonic cleaning instrument is accelerated the corrosion silicon mould, at last the non-crystaline amorphous metal micro-workpiece that obtains totally be got final product with alcohol wash.
Suction pouring equipment in the present embodiment comprises the molten chamber 4 of vacuum and lower impressions 5, and wherein non-crystaline amorphous metal original ingredient 10 is placed in vacuum molten chamber 4, and mechanical pump 3 coordinates and cuts off pumps 1 and molecular pump 2 and be used for the air in vacuum molten chamber 4 is evacuated to air pressure lower than 5x10
-3The pa vacuum.High-temperature electric arc coordinates arc generator 7 to produce by dc welding machine 8, to be used for fusing original ingredient 10.When inhaling casting, mechanical pump 3 is evacuated to negative pressure with the air in mould, in the silicon mould that the original ingredient 10 of molten condition is sucked in copper moulds 6, then with copper mould 6 in lower impressions 5 by water cooling.Purity is housed is 99.999% protective gas Ar gas in gas cylinder 9, be used for the protective gas as reaction.
Those skilled in the art will readily understand; the above is only preferred embodiment of the present invention; not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the preparation method of a non-crystaline amorphous metal micro-workpiece, it utilizes suction pouring to realize the preparation of non-crystaline amorphous metal micro-workpiece, and the method specifically comprises:
The various simple metal that non-crystaline amorphous metal is required are mixed with the non-crystaline amorphous metal raw material in proportion, and are placed in vacuum arc and inhale in the vacuum molten chamber of casting stove;
Preparation is placed in this silicon mould the copper mould that inner die cavity is through hole for the preparation of the silicon mould of non-crystaline amorphous metal micro-workpiece, and described copper mould is placed in the lower impressions that vacuum arc is inhaled the casting stove;
Vacuum molten chamber is vacuumized and is filled with protection gas, the non-crystaline amorphous metal raw material are carried out melting, then by reduce air pressure in copper mould make non-crystaline amorphous metal liquation after melting by described through hole by in the silicon mould in the molten chamber suction of vacuum lower impressions;
Can obtain the non-crystaline amorphous metal micro-workpiece after the demoulding.
2. preparation method according to claim 1, wherein, described silicon mould is placed in the through hole of copper mould and is the 1/3-1/2 of through hole axial length apart from the distance of through hole upper port.
3. preparation method according to claim 1 and 2, wherein, described copper mould is comprised of two halves copper mould piece, and having the cross section on half and half copper mould piece is semicircular groove, and the groove combination of two halves copper mould piece forms the inside die cavity through hole of copper mould.
4. the described preparation method of any one according to claim 1-3, wherein, the described protection gas that is filled with is Ar.
5. the described preparation method of any one according to claim 1-4, wherein, can carry out repeatedly melting to described non-crystaline amorphous metal raw material, to obtain uniform alloying component.
6. the described preparation method of any one according to claim 1-5, wherein, in described knockout course, at first copper mould die sinking, the bar that will comprise the non-crystaline amorphous metal micro-workpiece takes out, again silicon mould two ends bar is excised and is ground to and expose the silicon mould both ends of the surface, then the silicon mould that will expose and inner micro-workpiece thereof carry out ultrasonic cleaning, can obtain the non-crystaline amorphous metal micro-workpiece after the corrosion silicon mould.
7. the preparation facilities of a non-crystaline amorphous metal micro-workpiece, it comprises:
The suction pouring stove, it comprises for the molten chamber (4) of the vacuum of smelting amorphous alloy raw material and melts with this vacuum the lower impressions (5) that the chamber communicates;
Be placed in the copper mould (6) of described lower impressions (5), its inner die cavity is through hole, and this copper mould (6) melts chamber (4) by described through hole and described vacuum and communicates;
Silicon mould, it is placed in the through hole of described copper mould (6), is used for the moulding of non-crystaline amorphous metal micro-workpiece;
Non-crystaline amorphous metal material solution after described vacuum melts chamber (4) melting can obtain described non-crystaline amorphous metal micro-workpiece by moulding in the silicon mould in this through hole suction copper mould (6) after the demoulding.
8. preparation facilities according to claim 7, wherein, described silicon mould is placed in the through hole of copper mould and is the 1/3-1/2 of through hole axial length apart from the distance of through hole upper port.
9. according to claim 7 or 8 described preparation facilities, wherein, described copper mould (6) is comprised of two halves copper mould piece, and having the cross section on half and half copper mould piece is semicircular groove, and the groove combination of two halves copper mould piece forms the inside die cavity through hole of copper mould.
10. any one or described preparation facilities according to claim 7-9, wherein, this device also comprises mechanical pump (3) and the molecular pump (2) that vacuumizes for vacuum molten chamber (4), and for the electric welding machine (8) and the arc generator (7) that carry out melting.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104174831A (en) * | 2014-09-02 | 2014-12-03 | 哈尔滨工业大学 | Casting method of high-volume-fraction reinforced-phase titanium-based composite material casting |
| CN106521366A (en) * | 2016-09-30 | 2017-03-22 | 深圳大学 | Novel metal glass, ornament handcraft and preparation method of ornament handcraft |
| CN106583688A (en) * | 2015-10-19 | 2017-04-26 | 河南正旭科技股份有限公司 | Vertical aluminium alloy vacuum pressurizing casting cabin with double gates |
| CN108237211A (en) * | 2017-12-29 | 2018-07-03 | 广东工业大学 | A kind of manufacturing method of non-crystaline amorphous metal micropin |
| CN113418397A (en) * | 2021-06-11 | 2021-09-21 | 中国科学院力学研究所 | Be applied to anti-clogging side direction of suction casting smelting furnace and inhale copper cap device |
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| CN102962639A (en) * | 2012-11-10 | 2013-03-13 | 华中科技大学 | Method for manufacturing preparing multilayer amorphous alloy micro part by vacuum diffusion welding |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104174831A (en) * | 2014-09-02 | 2014-12-03 | 哈尔滨工业大学 | Casting method of high-volume-fraction reinforced-phase titanium-based composite material casting |
| CN106583688A (en) * | 2015-10-19 | 2017-04-26 | 河南正旭科技股份有限公司 | Vertical aluminium alloy vacuum pressurizing casting cabin with double gates |
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| CN108237211A (en) * | 2017-12-29 | 2018-07-03 | 广东工业大学 | A kind of manufacturing method of non-crystaline amorphous metal micropin |
| CN113418397A (en) * | 2021-06-11 | 2021-09-21 | 中国科学院力学研究所 | Be applied to anti-clogging side direction of suction casting smelting furnace and inhale copper cap device |
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