CN1605643A - Vacuum microcrystal non-crystal synthesis apparatus - Google Patents

Abstract

The invention discloses a vacuum microcrystalline amorphous synthesis equipment, comprising a vacuum chamber and an arc smelting cathode position adjustment device prepared on the vacuum chamber, the lower end of which is connected with a non-consumable cathode, and a smelting mold table is arranged under the non-consumable cathode. A cooling roller is installed in the middle of the vacuum chamber, and an atomizing gas supply device is arranged on one side of the cooling roller. The atomizing gas supply device is located at the gas outlet end of the vacuum chamber and a gas nozzle is installed, and the atomizing gas supply device is located outside the vacuum chamber. The gas outlet port is connected with the gas source. A crucible is prepared above the cooling roller, and the induction heating coil is wound on the crucible. The crucible clamping component is fastened on the crucible lifting component, and the lifting rod of the crucible lifting component is processed with a central hole. , communicated with the crucible holding assembly, and there is a powder product collection bucket under the cooling roller. There is no need to re-balance adjustment during loading and unloading, and at the same time, it avoids the inconvenience caused by installing cooling rollers for concentricity adjustment and dynamic balance experiments.

Description

Vacuum Microcrystalline Amorphous Synthesis Equipment

technical field

The invention relates to a smelting and non-equilibrium preparation equipment for common metal materials, in particular to a vacuum multi-functional equipment for smelting and synthesis of metal materials, non-equilibrium rapid solidification, preparation of strip samples and powders, synthesis and preparation of amorphous materials Microcrystalline amorphous synthesis equipment.

current technology

The synthesis and preparation of material samples such as smelting of metal materials, rapid quenching of melts, preparation of amorphous materials, and powder preparation are independent technologies. Most of the preparation and synthesis mainly used in scientific research need to be carried out under vacuum conditions. Therefore, arc melting, melt rapid quenching, atomization powder making, amorphous preparation and other equipment under vacuum or atmosphere protection conditions have been manufactured successfully. But these equipments can't be used for other usefulness because of single function. Therefore, in the preparation and synthesis of materials, there are often several procedures and several equipments need to be configured. Large investment and large land occupation. Especially in the laboratory, due to the change of the research direction, equipment with different functions is often required, so that the equipment purchased in the early stage is idle or abandoned after a short period of use, resulting in waste of resources or a decrease in equipment utilization. In order to change this status quo, a composite melting furnace has been successfully manufactured, but it only realizes two functions of arc melting and melt rapid quenching. Since this equipment is the same as the traditional single-function equipment, the position of the crucible clamping device in the vacuum chamber is basically fixed in terms of design ideas, so it is difficult to adjust the position in a small static range under the condition of opening the vacuum chamber. The position of the crucible cannot be adjusted outside the vacuum room, and the position of the crucible cannot be changed during the heating process. Since the clamping and fixing of the crucible is completely manual, the relative positions between the crucible and the inductor, and between the crucible and the cooling roller often appear. Deviations often cause the material in the crucible to fail to melt, high-frequency discharge during heating, and roll marking during rapid quenching. Not only the success rate of work is low, but also the waste of materials, energy and time is serious, and the operation of the equipment is extremely unstable. The cooling roller takes up most of the space in the vacuum chamber. If you want to use the existing equipment to realize other functions, you must remove the cooling roller. However, the cooling roll in the prior art is designed to be non-detachable. After reinstallation, repositioning, centering and dynamic balancing are required, and it is difficult to restore the original state.

Contents of the invention

The purpose of the present invention is to provide a vacuum multi-functional microcrystalline amorphous synthesis equipment with multi-function, multi-purpose, low cost, less land occupation and improved equipment utilization.

The technical solution of the present invention is realized in the following way: it includes a vacuum chamber and an arc smelting cathode position adjustment device configured on the vacuum chamber. There is a smelting mold table below, and the material placed in the smelting mold table is used as an anode. A cooling roller is installed in the middle of the vacuum chamber, and an atomized gas supply device is equipped on one side of the cooling roller. The atomized gas supply device is located in the vacuum chamber. An atomizing gas nozzle is installed at the gas outlet end in the room, and the atomizing gas supply device is located outside the vacuum chamber, and the gas outlet end is connected with the gas source. A crucible is prepared above the cooling roller, and an induction heating coil is wound on the crucible, and connected to the high The crucible is installed on the crucible holding assembly, and the crucible holding assembly is fastened on the crucible lifting assembly. The lifting rod of the crucible lifting assembly is processed with a central hole, which communicates with the crucible holding assembly, and is placed under the cooling roller. There is a powder product collection barrel, and the powder product collection barrel is docked with the vacuum chamber.

The two crucibles are used independently.

The powder product collection barrel is connected with the powder product material intake valve.

The high-pressure gas supply assembly for atomization and pulverization can be replaced with the atomization gas supply device, and one end of it is connected to the air source outside the vacuum chamber to provide high-pressure gas for the atomization and pulverization atomizer.

The cooling roller and the cooling roller bracket can be removed as a whole, and the atomizing powder atomizer can be installed on the vacuum chamber. The atomizing powder atomizer can be used interchangeably with the amorphous casting mold.

In the present invention, the cooling roll is first installed on the cooling roll bracket, and the two form an independent movable part, which does not require rebalancing and any other adjustments for loading and unloading, which not only provides the possibility to increase equipment functions, but also avoids the installation of The inconvenience caused by concentricity adjustment and dynamic balance experiment must be carried out on the equipment when cooling the roll.

The crucible lifting system designed by the present invention can statically or dynamically adjust the relative position between the crucible and the induction coil, the crucible and the cooling roller or the atomizing gas nozzle outside the vacuum chamber at any time during the work, which solves the problem that the vertical position of the crucible can only be adjusted Adjust in vacuum chamber.

The crucible clamping device realizes that the crucible can be installed at any angle within 360 degrees centered on the lifting rod of the crucible lifting system, and any position where the arm length of the crucible clamping device is the maximum radius, and cooperates with the crucible lifting system , basically realizing the arbitrary adjustment of the crucible position.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is another structural schematic diagram of the present invention.

Detailed ways

Accompanying drawing is the specific embodiment of the present invention;

Below in conjunction with accompanying drawing, content of the present invention is described in further detail:

Vacuum microcrystalline amorphous synthesis equipment, including a quick-quenching product collection barrel 1, a vacuum chamber 23, an arc smelting cathode position adjustment device 11 prepared on the vacuum chamber 23, and the arc smelting cathode position adjustment device 11 is connected to the non-consumable cathode 12, The non-consumable cathode 12 is used as the cathode, and a smelting mold table 15 is arranged under the non-consumable cathode 12, and the material placed in the smelting mold table 15 is used as an anode, and a cooling roller 16 is arranged in the middle of the vacuum chamber, and the cooling roller 16 is installed on the cooling roller bracket 17, the cooling roller bracket 17 is installed on the lower bottom plate in the vacuum chamber, and there is an atomizing gas supply device 2 on one side of the cooling roller 16, and the atomizing gas supply device 2 is installed on the vacuum chamber shell, and the atomizing gas supply device 2 An atomizing gas nozzle 3 is installed at one end located in the vacuum chamber, and one end of the atomizing gas supply device 2 located outside the vacuum chamber is connected to the gas source, and there is a crucible 5 or 9 above the cooling roller 16, and an induction heating coil 4, 8 is wound On the crucible 5 or crucible 9, and connected with the high-frequency power supply interface, the crucible 5 or crucible 9 is installed on the crucible holding assembly 7, and the crucible holding assembly 7 is fastened on the crucible lifting assembly 10, and the lifting of the crucible lifting assembly 10 The rod is processed with a central hole, communicated with the crucible clamping assembly 10, and supplies gas to the crucible 5 or crucible 9. There is a powder product collection bucket 18 under the cooling roller 16, and the powder product collection bucket 18 is docked with the vacuum chamber.

Referring to Fig. 1, the present invention realizes the arc smelting function of the material through the combination of the following components: in the vacuum chamber 23, the non-consumable cathode 12 is installed on the arc smelting cathode position adjustment device 11, the non-consumable cathode 12 is used as the cathode, and is connected with the vacuum chamber 23. The chamber 23 is insulated, and a smelting mold table 15 is set under the non-consumable cathode 12. The smelting mold table 15 is set on the arc melting mold table bracket 14, and the material placed in the smelting mold table 15 is used as an anode. Put the prepared raw materials into the smelting mold platform 15, vacuumize the vacuum chamber 23 to the required vacuum degree (such as 2× ^10-3 Pa), fill it with argon Ar to the ambient pressure (0.1MPa), and turn on For smelting power supply, use the handle of the cathode position adjustment device 11 located outside the vacuum chamber to make the cathode 12 contact the mold table 15 to strike the arc, and then adjust the handle of the cathode position adjustment device 11 located outside the vacuum chamber to adjust the position of the non-consumable electrode 12 so that it guides the arc The raw material is heated and melted and smelted evenly.

The present invention realizes the melt rapid quenching function of the material through the combination of the following components: the independent components composed of the cooling roll 16 and the cooling roll support assembly 17 are placed in the vacuum chamber 23 and fixed on the base in the vacuum chamber. The cooling roller 16 is coupled through a magnetic coupling and is driven by a stepless speed regulation motor located outside the vacuum chamber 23, and the rotation speed and direction of the motor are controlled by a computer. The quick-quenching product collection bucket assembly 1 is docked with the vacuum chamber 23, the induction heating coil 8 located on the top of the cooling roller 16 is connected with the high-frequency power supply interface 6, the high-frequency power supply is introduced into the vacuum chamber, and the crucible clamping assembly 7 is installed on the On the lifting shaft of the crucible lifting assembly 10, put the material to be heated into the melting crucible 9 with a small hole at the bottom, put the crucible 9 with the material into the induction heating coil 8 and clamp it on the crucible holding assembly 7, The horizontal position of the crucible 9 is adjusted by the crucible clamping assembly 7 so that it can move up and down without hindrance driven by the handle of the crucible elevating assembly 10 arranged outside the vacuum chamber. Thereafter, by adjusting the limit bolts on the crucible lifting assembly 10, the limit distance between the bottom of the crucible 9 and the surface of the cooling roller 16 is set and locked, so as to prevent the crucible from falling offside and scratching the cooling roller. When working, first evacuate the vacuum chamber 23 to the required vacuum degree (such as 2×10 ^-3 Pa) (if necessary, it can be filled with a certain pressure of Ar), start the driving motor and adjust the speed to the required speed, and turn on The high-frequency power supply adjusts the relative position of the material in the crucible 9 and the induction coil 8 through the handle of the crucible lifting assembly 10 arranged outside the vacuum chamber, so that it is in the best working state. After the material in the crucible 9 is heated and melted by the high-frequency power supply connected to the vacuum chamber through the induction coil 8 and overheated to the required temperature, the bottom of the crucible 9 and the outer edge of the cooling roller 16 are controlled by the handle of the crucible lifting assembly 10 outside the vacuum chamber. After reaching the requirements, start the electromagnetic gas switch, and the low-pressure gas is introduced into the crucible through the crucible lifting assembly 10 and the crucible clamping assembly 7, and the melt is blown out from the bottom hole of the crucible 9 to the cooling roller 16 that has rotated according to the setting. On the roller surface, the melt is cooled at a high speed. The thin strip product obtained by high-speed cooling flies into the collection bucket 1 under the action of centrifugal force, and the end flange of the quick-quenched product collection bucket assembly 1 is opened to take out the product.

The present invention realizes the secondary cooling and quick-quenching pulverization function of the material through the combination of the following components: first, the powder product collection barrel 18 is docked with the vacuum chamber 23, and the quick-quenching product collection barrel assembly 1 is unloaded to be the same as that of the melt quick-quenching The cooling roller 16 is installed and driven in the same way, and the induction heating coil 4 located on the side of the cooling roller 16 is connected with the high-frequency power supply interface 6, and the high-frequency power supply is introduced into the vacuum chamber. The crucible holding assembly 7 is installed on the lifting shaft of the crucible lifting assembly 10, the material to be heated is put into the melting crucible 5 with a small hole at the bottom, and the crucible 5 with the material is put into the induction heating coil 4 and clamped on the On the crucible crucible clamping assembly 7, the horizontal position of the crucible 5 is adjusted by the crucible clamping assembly 7, so that it can move up and down without hindrance under the drive of the handle of the crucible lifting assembly 10 arranged outside the vacuum chamber. Install the flange plate with the secondary cooling quick quenching pulverizing high pressure atomizing gas supply assembly 2 on the connecting flange of the vacuum chamber 23 and the quick quenching product collection barrel 1, and send the part working in the vacuum chamber into the vacuum chamber, And the atomizing gas nozzle 3 is installed on the atomizing gas supply assembly 2, the atomizing gas supply assembly 2 is connected with the atomizing gas nozzle 3 through a hose, and the relative position of the atomizing gas nozzle 3 can be adjusted. Before working in the vacuum chamber, adjust the relative positions of the atomizing gas nozzle 3, the melting crucible 5 and the cooling roller 16 according to the needs, and pay special attention to the axis of the melting crucible 5 and the axis of the atomizing gas nozzle 3 in the vertical plane intersect. When working, first evacuate the vacuum chamber 23 to the required vacuum degree (such as 2×10 ^-3 Pa) (if necessary, it can be filled with Ar at a certain pressure), start the driving motor and adjust the speed to the required speed, and turn on The high-frequency power supply adjusts the relative position of the material in the crucible 5 and the induction coil 4 through the handle of the crucible lifting assembly 10 arranged outside the vacuum chamber, so that it is in the best working state. After the material in the crucible 5 is heated and melted by the high-frequency power supply connected to the vacuum chamber through the induction coil 4 and overheated to the required temperature, the bottom of the crucible 5 and the atomizing gas nozzle 3 are controlled by the handle of the crucible lifting assembly 10 located outside the vacuum chamber After that, two electromagnetic gas switches are activated at the same time, and the low-pressure gas passes through the crucible lifting assembly 10 and the crucible holding assembly 7 to blow the melt out from the bottom hole of the crucible 9 to form a columnar melt from top to bottom The high-pressure gas passes through the atomizing gas supply assembly 2 and the atomizing gas nozzle 3 to form an atomizing air flow, which atomizes the melt flow into small liquid droplets moving horizontally. After the drop hits the cooling roller 16, it is cooled at a high speed, and the powder product obtained by the high-speed cooling flies into the collection bucket 18 under the action of centrifugal force, and then the powder product set at the end of the quenched product collection bucket assembly 18 is opened to take the material Port 19 removes the product.

Referring to Fig. 2, the present invention realizes the function of high-pressure gas atomization pulverization through the combination of the following components: the cooling roll 16 and the cooling roll cooling roll support assembly 17 are discharged from the vacuum chamber, and the atomizer 21 is installed in the vacuum chamber for atomization device/amorphous mold support 22. When realizing this function, the induction coil 4 and the crucible 5 with a small hole at the bottom are installed and used. These two parts adopt the same installation or connection relationship as that of secondary cooling and rapid quenching for pulverization. The atomizing gas is introduced into the vacuum chamber by the high-pressure gas supply assembly 20 for atomizing and pulverizing, and connected with the atomizer 21 to form a high-pressure gas atomizing and pulverizing atomizing airflow. Before working, adjust the horizontal position of the crucible 5 so that its axis roughly coincides with the atomizer nozzle axis. After the vacuum chamber is evacuated, the material in the crucible 5 is heated and melted by the high-frequency power supply connected to the vacuum chamber through the induction coil 4 and overheated to the required temperature. The atomizer 21 is in close contact, and the two electromagnetic gas switches are activated at the same time. The low-pressure gas blows the melt out from the small hole at the bottom of the crucible 5, and the high-pressure gas introduced into the atomizer through the high-pressure gas supply assembly 20 for atomization and pulverization blows the melt. The atomized liquid droplets are cooled into powder and fall into the powder collection barrel 18, and the product is taken out from the powder product feeding port 19.

The present invention realizes the function of vacuum bulk amorphous preparation through the combination of the following components: the atomizer 21 is removed, and the water-cooled die-casting mold 21' is installed on the atomizer/amorphous mold support 22 in the vacuum chamber. Remove the high-pressure gas supply assembly 20, close the remaining interface with a blind flange or connect the quick-quenching product collection barrel assembly 1 to this interface. When realizing this function, use the high-pressure gas atomization pulverization function The same other components and use the same connection and adjustment relationship. After the vacuum chamber is evacuated, the induction coil 4 melts the material in the crucible 5 and superheats it to an ideal temperature, and the bottom of the crucible 5 with the melt in it is driven by the crucible lifting assembly 10 to closely contact the sprue of the water-cooled die-casting mold 21 ′, The gas introduced through the component 10 presses the melt into the casting mold from the small hole at the bottom of the crucible. When taking out the material, the vacuum chamber needs to be opened to disassemble the casting mold.

The observation window 13 is designed to be detachable. The first purpose is to observe the working state of the equipment, and the second is to provide an interface inside and outside the vacuum chamber for developing other functions.

The invention has five functions of electric arc smelting, melt quick quenching, ultrasonic atomization powder making, secondary cooling quick quenching powder making and vacuum die-casting amorphous preparation. The replacement of components is convenient, especially the parts inside the vacuum chamber can be easily disassembled, and there are enough vacuum chamber interfaces, which provide sufficient conditions for users to develop new functions and expand the scope of use.

Claims (5)

1, vacuum microcrystal non-crystal synthesis apparatus, comprise vacuum chamber (23), be formulated in the arc melting negative electrode position regulator (11) on the vacuum chamber (23), arc melting negative electrode position regulator (11) lower end is connected with on-consumable negative electrode (12), on-consumable negative electrode (12) is as negative electrode, on-consumable negative electrode (12) below is provided with melting mould platform (15), be positioned over the interior material of melting mould platform (15) as anode, it is characterized in that;

Be provided with cooling roller (16) in the middle part of vacuum chamber (23), side preparation at cooling roller (16) has atomizing gas feedway (2), the gas outlet end that atomizing gas feedway (2) is positioned at vacuum chamber is equipped with atomizing gas nozzle (3), atomizing gas feedway (2) is positioned at vacuum chamber outer gas inlet end and source of the gas and links, in the preparation of the top of cooling roller (16) crucible (5) or crucible (9) are arranged, on crucible (5) or crucible (9), be wound with load coil (4) or load coil (8), and be connected with high frequency electric source interface (6), crucible (5) or crucible (9) are installed on the crucible clamp assemblies (7), crucible clamp assemblies (7) is fastened on the crucible lifting assembly (10), the elevating lever of crucible lifting assembly (10) is processed with centre hole, be connected with crucible clamp assemblies (7), in the below of cooling roller (16) powder-product gathering barrel (18) is arranged, powder-product gathering barrel (18) docks with vacuum chamber (23).

2, vacuum microcrystal non-crystal synthesis apparatus according to claim 1 is characterized in that, crucible (5) or crucible (9) are that independent transposition is used.

3, vacuum microcrystal non-crystal synthesis apparatus according to claim 1 is characterized in that, powder-product gathering barrel (18) links with powder-product material taking mouth valve (19).

4, vacuum microcrystal non-crystal synthesis apparatus according to claim 1 is characterized in that, powder by atomization high pressure gas feeding assembly (20) can with atomizing gas feedway (2) mutual alternative, its end lead to vacuum chamber outer with the source of the gas connection.

5, vacuum microcrystal non-crystal synthesis apparatus according to claim 1, it is characterized in that, cooling roller (16) and cooling roller support (17) can integral body unload, and powder by atomization spraying gun (21) is installed on the vacuum chamber, and powder by atomization spraying gun (21) can be used interchangeably with amorphous mold (21 ').

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