CONTINUOUS PRECISION FORMING DEVICE AND PROCESS FOR AMORPHOUS ALLOY OR COMPOSITE MATERIAL THEREOF

Abstract

A continuous precision forming device and process for an amorphous alloy or a composite material thereof is provided. By means of the device, when a melting platform with an alloy melt is rotated from the melting position to a position just below the forming mould (9), temperature of the alloy melt can be in the range of the overcooled liquid zone temperature of the alloy melt, and then a loading rod (7) drives the forming mould (9) to proceed with pressing forming. According to the process, press-forming is carried out in a certain temperature interval in the amorphous alloy melt solidification process, and the heating, cooling, solidification and forming in the forming process are coordinated, such that continuous forming of the amorphous alloy is achieved.

Claims

1. A continuous precision forming device for amorphous alloy or composite material thereof, comprising a vacuum chamber, which is selectively to be vacuumized or filled with a shielding gas; an alloy smelting system, comprising a heating device for melting alloy raw material into alloy melt and a plurality of melting platforms for receiving the alloy melt; a feeding device, arranged for supplying the alloy raw material to the alloy smelting system; a forming system, comprising a loading rod and a forming mould disposed at a lower end of the loading rod; and a work head, mounted at a bottom of the vacuum chamber and providing a rotating rod at a center position of a bottom of the work head, the rotating rod being driven to rotate thereby driving the work head to rotate, and the melting platforms being disposed at an upper surface of the work head; wherein distances between the rotating rod and each melting platform are equal, and distances between two adjacent melting platforms are equal, the melting platform carrying the alloy melt is driven by the rotating rod to rotate from a melting position to a position under the forming mould, temperature of the alloy melt is in a range of overcooled liquid zone temperature, and the forming mould is driven by the loading rod to proceed with press forming.

2. The continuous precision forming device for amorphous alloy or composite material thereof according to claim 1, wherein the heating device is an induction coil or an arc heating device; when the induction coil is applied, a smelting crucible is disposed below the feeding device, the induction coil is disposed outside the smelting crucible to heat the smelting crucible, and the melting platform is rotated to a position under the smelting crucible.

3. The continuous precision forming device for amorphous alloy or composite material thereof according to claim 1, when an arc heating device is applied, the alloy raw material in the feeding device is placed in the melting platform by a robot, and the arc heating device is located right above the melting platform.

4. The continuous precision forming device for amorphous alloy or composite material thereof according to claim 2, wherein the smelting crucible is a quartz crucible, a ceramic crucible, or a water-cooled copper crucible, a baffle is arranged at a bottom of the smelting crucible, after the alloy raw material is melted, the baffle is removed so that the alloy melt flows onto the melting platform.

5. The continuous precision forming device for amorphous alloy or composite material thereof according to claim 1, wherein amorphous alloy or composite material thereof after being press forming are taken out from the vacuum chamber.

6. The continuous precision forming device for amorphous alloy or composite material thereof according to claim 1, wherein the melting platform is made of material which does not chemically react with the alloy raw material and does not affect heating, melting, solidification and forming process of the alloy raw material.

7. A continuous precision forming process by using the continuous precision forming device for amorphous alloy or composite material thereof according to claim 1, wherein an induction coil is arranged to heat the alloy raw material, and the process comprises: vacuumizing the vacuum chamber; loading the alloy raw material to the feeding device and then supplying the alloy raw material to a smelting crucible; heating the alloy raw material to form the alloy melt which flows onto the melting platform after a baffle disposed at a bottom of the smelting crucible is opened; rotating the melting platform carrying the alloy melt from a melting position to a position under the forming mould; and performing press forming to the alloy melt by using the forming mould, and simultaneously cooling the alloy melt rapidly when the alloy melt is in the range of the overcooled liquid zone temperature between a glass transition temperature and a liquidus temperature, and finally obtaining an amorphous alloy or an amorphous composite material; and alternatively, wherein an arc heating device is arranged to heat the alloy raw material, and the process comprises: vacuumizing the vacuum chamber; loading the alloy raw material to the feeding device and then supplying the alloy raw material to the melting platform; heating the alloy raw material to form the alloy melt; rotating the melting platform carrying the alloy melt from a melting position to a position under the forming mould; and performing press forming to the alloy melt by using the forming mould, and simultaneously cooling the alloy melt rapidly when the alloy melt is in a range of the overcooled liquid zone temperature between a glass transition temperature and a liquidus temperature; and finally obtaining an amorphous alloy or an amorphous composite material.

8. The continuous precision forming process by using the continuous precision forming device for amorphous alloy or composite material thereof according to claim 7, wherein the vacuum chamber is vacuumized until a vacuum degree reaches 110.sup.1-110.sup.4 Pa, the alloy raw material is prepared by smelting or casting; shape of the alloy raw material is a rod shape, a plate shape, a sheet shape and/or a spherical shape; and the alloy raw material is selected according to the amorphous alloy or the amorphous composite material to be prepared.

9. The continuous precision forming process by using the continuous precision forming device for amorphous alloy or composite material thereof according to claim 7, wherein a cooling rate is 10.sup.2-10.sup.2 K/min when the alloy melt is cooled rapidly; and the alloy melt is rapidly cooled by using the forming mould or a melting platform with a cooling function thereby obtaining the amorphous alloy or the amorphous composite material.

10. The continuous precision forming process by using the continuous precision forming device for amorphous alloy or composite material thereof according to claim 7, wherein the heating and forming are carried out simultaneously; according to time for heating and melting to set up movement speed of the melting platform and the forming mould, continuous feeding, melting and forming are realized thereby achieving continuous forming of the amorphous alloy or amorphous composite material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings facilitate an understanding of the various embodiments of this invention. In such drawings:

[0033] FIG. 1a is a perspective view of a continuous precision forming device for amorphous alloy or composite material thereof where an induction coil is applied according to one embodiment of the present invention; and

[0034] FIG. 1b is a perspective view of a continuous precision forming device for amorphous alloy or composite material thereof where an arc heating device is applied according to one embodiment of the present invention.

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

[0035] A distinct and full description of the technical solution of the present invention will follow by combining with the accompanying drawings.

[0036] Referring to FIGS. 1a and 1b, a continuous precision forming device for amorphous alloy or composite material thereof includes a vacuum chamber 3, a feeding device 6, an alloy smelting system, a forming system, and a work head 2. Specifically, the vacuum chamber 3 is selectively to be vacuumized or filled with a shielding gas, and the feeding device 6 is arranged for supplying the alloy raw material to the alloy smelting system. Furthermore, the alloy smelting system includes a heating device for melting alloy raw material into alloy melt 12 and a plurality of melting platforms for receiving the alloy melt 12. Specifically, the forming system includes a loading rod 7 and a forming mould 9 disposed at a lower end of the loading rod 7. The work head 2 is mounted at a bottom of the vacuum chamber 3 and provides a rotating rod 1 at a center position of a bottom of the work head 2. Furthermore, the rotating rod 1 is driven to rotate thereby driving the work head 2 to rotate, and the melting platforms are disposed at an upper surface of the work head 2. More specifically, distances between the rotating rod 1 and each melting platform are equal, and distances between two adjacent melting platforms are equal. In this way, the melting platform carrying the alloy melt 12 is driven by the rotating rod 1 to rotate from a melting position to a position under the forming mould 9, at this time, and the forming mould 9 is driven by the loading rod 7 to proceed with press forming, thereby obtaining an amorphous alloy 10.

[0037] Specifically, the heating device is an induction coil or an arc heating device. When the induction coil is applied, a smelting crucible 11 is disposed below the feeding device 6, the induction coil 5 is disposed outside the smelting crucible 11 to heat the alloy raw material in the smelting crucible 11, and the melting platform is rotated to a position under the smelting crucible 11. After the alloy raw material is melted, a baffle 4 at a bottom of the smelting crucible 11 is removed so that the alloy melt flows onto the melting platform. When an arc heating device is applied, the alloy raw material in the feeding device 6 is placed in the melting platform by a robot 13, and the arc heating device is located right above the melting platform.

[0038] Specifically, the melting platform is not only used for carrying the alloy melt, but used for performing press forming by cooperating with the forming mould 9. The melting platform is driven to rotate by the rotating rod 1 thereby feeding and forming continuously. After press forming is performed, the amorphous alloy or the amorphous composite material is taken out from the vacuum chamber by a sampling device 8.

[0039] Preferably, the melting platform is made of material which does not chemically react with the alloy raw material and does not affect heating, melting, solidification and forming process of the alloy raw material.

[0040] When the induction coil is arranged to heat the alloy raw material, and the process includes:

[0041] vacuumizing the vacuum chamber;

[0042] loading the alloy raw material to the feeding device and then supplying the alloy raw material to a smelting crucible;

[0043] heating the alloy raw material to form the alloy melt which flows onto the melting platform after a baffle disposed at a bottom of the smelting crucible is opened;

[0044] rotating the melting platform carrying the alloy melt from a melting position to a position under the forming mould; and

[0045] performing press forming to the alloy melt by using the forming mould, and simultaneously cooling the alloy melt rapidly when the alloy melt is in the range of the overcooled liquid zone temperature between a glass transition temperature and a liquidus temperature, and finally obtaining an amorphous alloy or an amorphous composite material.

[0046] Alternatively, when an arc heating device is arranged to heat the alloy raw material, and the process includes:

[0047] vacuumizing the vacuum chamber;

[0048] loading the alloy raw material to the feeding device and then supplying the alloy raw material to the melting platform;

[0049] heating the alloy raw material to form the alloy melt;

[0050] rotating the melting platform carrying the alloy melt from a melting position to a position under the forming mould; and

[0051] performing press forming to the alloy melt by using the forming mould, and simultaneously cooling the alloy melt rapidly when the alloy melt is in a range of the overcooled liquid zone temperature between a glass transition temperature and a liquidus temperature; and finally obtaining an amorphous alloy or an amorphous composite material.

[0052] It can be understood, the heating and forming are carried out simultaneously. According to time for heating and melting to set up movement speed of the melting platform and the forming mould, continuous feeding, melting and forming are realized thereby achieving continuous forming of the amorphous alloy or amorphous composite material.

[0053] Specifically, the alloy raw material is prepared by smelting or casting; and the shape of the alloy raw material is a rod shape, a plate shape, a sheet shape and/or a spherical shape.

[0054] Furthermore, the alloy raw material is heated by arc heating, induction heating, resistance heating, laser heating, plasma heating, infrared heating or microwave heating.

[0055] The alloy melt is rapidly cooled by a low temperature forming mould or a melting platform having a cooling function thereby obtaining an amorphous alloy or amorphous composite material.

Embodiment 1

[0056] As shown in FIG. 1(a), the feeding device 6 is provided for continuous feeding. Firstly, the vacuum chamber 3 is vacuumized until the vacuum degree reaches 110.sup.1-110.sup.4 Pa, and the alloy raw material is fed into the smelting crucible 11 in the induction coil 5. Then the alloy raw material is heated and melted by the induction coil 5 under the vacuum condition (or by argon shielding) to obtain the alloy melt 12, and then the heating is turned off. Subsequently, the rotating rod 1 rotates thereby driving the work head 2 to a position under the forming mould 9, and the alloy melt 12 is freely cooled. When the temperature of the alloy melt 12 is in a range of the overcooled liquid zone temperature between the glass transition temperature (T.sub.g) and the liquidus temperature (T.sub.1), the press forming is performed by the forming mold 9 on a lower end of the loading rod 7, and simultaneously the alloy melt is cooled rapidly. Specifically, the cooling rate is 10.sup.2-10.sup.2 K/min. Finally, the amorphous alloy 10 is obtained and taken out by the sampling device 8. In the above process, while the alloy melt 12 is rotated under the forming mould 9, another melting platform on the work head is also rotated to a position under the melting crucible, so the above-described melting-rotation-forming process is repeated at this position.

Embodiment 2

[0057] As shown in FIG. 1(b), the feeding device 6 is provided for continuous feeding. Firstly, the vacuum chamber 3 is vacuumized until the vacuum degree reaches 110.sup.1-110.sup.4 Pa, and the alloy raw material is fed into the melting platform under the arc heating device (under an electrode 14). Then the alloy raw material is heated and melted by the electrode 14 to obtain the alloy melt 12, and then the heating is turned off. Subsequently, the rotating rod 1 rotates thereby driving the work head 2 to a position under the forming mould 9, and the alloy melt 12 is freely cooled. When the temperature of the alloy melt 12 is in a range of the overcooled liquid zone temperature between the glass transition temperature (T.sub.g) and the liquidus temperature (T.sub.l), the press forming is performed by the forming mold 9 on a lower end of the loading rod 7, and simultaneously the alloy melt is cooled rapidly. Specifically, the cooling rate is 10.sup.2-10.sup.2 K/min. Finally, the amorphous alloy 10 is obtained and taken out by the sampling device 8. In the above process, while the alloy melt 12 is rotated under the forming mould 9, another melting platform on the work head is also rotated to a position under the electrode 14, so the above-described melting-rotation-forming process is repeated at this position.

[0058] While the invention has been described in connection with what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.