Titanium alloy powder processing equipment and preparation process
阅读说明：本技术 一种钛合金粉末加工设备及制备工艺 (Titanium alloy powder processing equipment and preparation process ) 是由 刘红艳 李玉山 于 2019-12-05 设计创作，主要内容包括：本发明提供一种钛合金粉末加工设备及制备工艺,包括机架体,送料装置,高频发生器,安装板,电磁加热圈,钛液雾化机构,旋转造粒机构,调速器和配电柜；本发明高频发生器控制电磁加热圈的设置,避免了现有坩埚会对钛及钛合金液产生污染,严重影响了激光增材的问题；钛液雾化机构的设置,雾化过程无坩埚,由于熔化和雾化同时进行,大大缩短了工艺流程；旋转造粒机构的设置,旋转电机带动旋转盘转动,在离心力的作用下,雾化后的钛液粒经过旋转盘甩出,从而形成金属液滴,金属液滴进一步球化并冷凝得到所需粉末,具有生产周期短、球化率高、成本低的优点。(The invention provides titanium alloy powder processing equipment and a preparation process, wherein the titanium alloy powder processing equipment comprises a frame body, a feeding device, a high-frequency generator, a mounting plate, an electromagnetic heating ring, a titanium liquid atomizing mechanism, a rotary granulating mechanism, a speed regulator and a power distribution cabinet; the high-frequency generator controls the arrangement of the electromagnetic heating ring, so that the problem that the existing crucible can pollute titanium and titanium alloy liquid and seriously affect laser material increase is solved; the arrangement of the titanium liquid atomization mechanism, the atomization process has no crucible, and the melting and atomization are carried out simultaneously, so that the process flow is greatly shortened; the rotary granulation mechanism is arranged, the rotary motor drives the rotary disc to rotate, and under the action of centrifugal force, atomized titanium liquid particles are thrown out through the rotary disc, so that metal liquid drops are formed, and the metal liquid drops are further spheroidized and condensed to obtain required powder.)
1. The utility model provides a titanium alloy powder processing equipment and preparation technology, includes the frame body, its characterized in that: a feeding device is arranged on the frame body through a bolt, and an installation plate is fixed at the lower end of the front side of the feeding device; the mounting plate is provided with an electromagnetic heating ring, and a high-frequency generator is mounted at the upper end of the frame body; the electromagnetic heating coil is electrically connected with the high-frequency generator; a titanium liquid atomization mechanism is fixed below the frame body; the rotary granulation mechanism is arranged on the right side of the titanium liquid atomization mechanism and is fixed with the frame body through bolts; a speed regulator is arranged on one side of the frame body through a screw; and a power distribution cabinet is fixed on one side of the frame body through bolts.
2. The titanium alloy powder processing equipment and the preparation process as claimed in claim 1, wherein: the feeding device comprises a mounting frame, a screw rod sliding table, a sliding frame, a titanium rod clamping piece and a titanium rod, wherein the screw rod sliding table is mounted on the mounting frame in a matched manner; the sliding frame is fixed with a sliding table on the screw rod sliding table through an inner hexagon bolt; the titanium bar clamping piece is arranged on the sliding frame through a bolt and is inserted in a hole of the titanium bar; the screw rod sliding table is connected with the speed regulator through a lead.
3. The titanium alloy powder processing equipment and the preparation process as claimed in claim 1, wherein: the titanium liquid atomization mechanism comprises a liquid collection box, a three-way pipe and a spacer, wherein the liquid collection box is installed at the bottom of the frame body through a bolt, and the three-way pipe transversely penetrates through the liquid collection box; the left end of the three-way pipe is connected with an external compressed air source, the right end of the three-way pipe extends into the through hole, and the lower end of the three-way pipe is positioned at the bottom of the inner side of the liquid collecting tank; the spacer is arranged at the right end of the three-way pipe.
4. The titanium alloy powder processing equipment and the preparation process as claimed in claim 1, wherein: the rotary granulation mechanism comprises a rotary motor, a fixed shell, a rotary disk, a through hole and a discharge hole, the rotary motor is fixed on the right side of the fixed shell through a bolt, and the rotary motor penetrates through the fixed shell and is fixedly connected with the rotary disk; the upper end of the fixed shell is fixed with the frame body; a plurality of bellmouths are arranged outside the rotating disc, and the diameter of the tip parts of the bellmouths is 1-2 mm; the through hole is formed in the left side of the rotating disc; the discharge port is welded at the bottom of the fixed shell.
5. The titanium alloy powder processing equipment and the preparation process as claimed in claim 1, wherein: the power distribution cabinet is internally provided with a circuit breaker which is respectively connected with the high-frequency generator, the speed regulator and the rotating motor through wires.
6. A process for preparing titanium alloy powder using the titanium alloy powder processing apparatus and the manufacturing process according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
the method comprises the following steps: feeding, namely fixing a titanium rod on a titanium rod clamping piece, adjusting the rotating speed of the speed regulator to be 150 plus 200r/min, and slowly feeding the fixed titanium rod into an electromagnetic heating ring through a screw rod sliding table;
step two: melting, wherein the electromagnetic heating ring is controlled to generate heat by a high-frequency generator, the temperature is controlled to be 1600-;
step three: atomizing, namely dropping the titanium liquid obtained in the step two into a liquid collecting tank, introducing high-pressure compressed gas into the three-way pipe at the moment, and blowing the titanium liquid to the partition by utilizing the negative pressure effect to obtain atomized titanium liquid;
step four: and (3) granulating, namely feeding the atomized titanium liquid pipeline obtained in the third step into a rotating disk, driving the rotating disk to rotate by a rotating motor, throwing the atomized titanium liquid out of the rotating disk under the action of centrifugal force to form metal dropping liquid, and carrying out spheroidizing condensation on the metal dropping liquid to obtain titanium powder.
Technical Field
The invention belongs to the technical field of titanium alloy powder preparation, and particularly relates to titanium alloy powder processing equipment and a preparation process.
Background
With the rapid development of near-net shape powder metallurgy technologies such as laser 3D printing technology and thermal spraying technology, people begin to apply the near-net shape powder metallurgy technology to the existing technology, and with the addition of a novel technology, the purity, morphology, granularity and the like of raw material powder are obviously optimized and improved.
The preparation process of the existing titanium and titanium alloy powder mainly comprises the following steps: mechanical crushing, chemical reaction and atomization, wherein the powder obtained by the mechanical crushing has irregular shape and high oxygen content, and does not meet the requirement; the chemical reaction method is only suitable for preparing pure titanium powder, and the prepared powder has high chlorine residue and insufficient purity; therefore, the preparation of the spherical titanium and titanium alloy powder at present mainly adopts an atomization method, but in the atomization process, the molten metal is easy to deform, and completely spherical powder cannot be obtained; in addition, titanium is easy to react with oxygen and is oxidized, various devices involved in the process, such as a crucible, can also pollute titanium and titanium alloy liquid, and the quality of the prepared titanium alloy powder is directly influenced.
Therefore, the invention of a titanium alloy powder preparation processing device is very necessary.
Disclosure of Invention
In order to solve the technical problems, the invention provides titanium alloy powder processing equipment and a preparation process, and aims to solve the problems that the existing spherical titanium and titanium alloy powder preparation mainly adopts an atomization method, molten metal is easy to deform in the atomization process, completely spherical powder cannot be obtained, titanium is easy to react with oxygen to be oxidized, various equipment involved in the process, such as a crucible, can pollute the titanium and titanium alloy liquid, and the quality of the prepared titanium alloy powder is directly influenced.
A titanium alloy powder processing device and a preparation process thereof are provided, wherein a feeding device is arranged on a frame body through a bolt, and an installation plate is fixed at the lower end of the front side of the feeding device; the mounting plate is provided with an electromagnetic heating ring, and a high-frequency generator is mounted at the upper end of the frame body; the electromagnetic heating coil is electrically connected with the high-frequency generator; a titanium liquid atomization mechanism is fixed below the frame body; the rotary granulation mechanism is arranged on the right side of the titanium liquid atomization mechanism and is fixed with the frame body through bolts; a speed regulator is arranged on one side of the frame body through a screw; and a power distribution cabinet is fixed on one side of the frame body through bolts.
The feeding device comprises an installation frame, a screw rod sliding table, a sliding frame, a titanium rod clamping piece and a titanium rod, wherein the installation frame is fixed on the frame body through bolts, and the screw rod sliding table is installed on the installation frame in a matched mode; the sliding frame is fixed with a sliding table on the screw rod sliding table through an inner hexagon bolt; the titanium bar clamping piece is arranged on the sliding frame through a bolt and is inserted in a hole of the titanium bar; the screw rod sliding table is connected with the speed regulator through a lead.
The titanium liquid atomization mechanism comprises a liquid collection box, a three-way pipe and a spacer, wherein the liquid collection box is installed at the bottom of the frame body through a bolt, and the three-way pipe transversely penetrates through the liquid collection box; the left end of the three-way pipe is connected with an external compressed air source, the right end of the three-way pipe extends into the through hole, and the lower end of the three-way pipe is positioned at the bottom of the inner side of the liquid collecting tank; the spacer is arranged at the right end of the three-way pipe.
The rotary granulation mechanism comprises a rotary motor, a fixed shell, a rotary disk, a through hole and a discharge hole, the rotary motor is fixed on the right side of the fixed shell through a bolt, and the rotary motor penetrates through the fixed shell and is fixedly connected with the rotary disk; the upper end of the fixed shell is fixed with the frame body; a plurality of bellmouths are arranged outside the rotating disc, and the diameter of the tip parts of the bellmouths is 1-2 mm; the through hole is formed in the left side of the rotating disc; the discharge port is welded at the bottom of the fixed shell.
The inside 3 circuit breakers that are provided with of switch board, respectively with high frequency generator, speed regulator and rotating electrical machines pass through the wire and connect.
A preparation process of titanium alloy powder is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: feeding, namely fixing the titanium rod on the titanium rod clamping piece, adjusting the rotating speed of the speed regulator to 150 plus 200r/min, and slowly feeding the fixed titanium rod into the electromagnetic heating ring through the screw rod sliding table.
Step two: and melting, wherein the electromagnetic heating ring is controlled to generate heat by the high-frequency generator, the temperature is controlled to be 1670 ℃, the titanium rod is contacted with the inside of the electromagnetic heating ring, and melting is realized under high-temperature control to obtain the titanium liquid.
Step three: and (4) atomizing, namely, allowing the titanium liquid obtained in the step two to fall into a liquid collecting tank, introducing high-pressure compressed gas into the three-way pipe at the moment, and blowing the titanium liquid to the spacer by utilizing the negative pressure effect to obtain atomized titanium liquid.
Step four: and (3) granulating, namely feeding the atomized titanium liquid obtained in the third step into a rotating disk through a pipeline, driving the rotating disk to rotate by a rotating motor, throwing the atomized titanium liquid out through the rotating disk under the action of centrifugal force to form metal dropping liquid, and carrying out spheroidizing condensation on the metal dropping liquid to obtain titanium alloy powder.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the titanium alloy powder processing equipment and the preparation process, a manufacturing method of atomizing by using a crucible in the existing structure is abandoned, and the titanium liquid atomizing structure is arranged in the equipment, so that the atomization and the melting are synchronously performed, the equipment in the prepared layer cannot pollute titanium and titanium alloy liquid, and the problem that the pollution of the titanium alloy liquid in the preparation process of the existing equipment structure influences the preparation quality is avoided.
2. According to the titanium alloy powder preparation process, melting and atomization are carried out simultaneously, clean atomization is carried out, the problem that an atomization structure in the prior art pollutes the original process is solved, a spherical powder structure is obtained through a working mode that metal liquid drops fall, rotate and throw out, and the defect that spherical powder cannot be obtained in the prior art is overcome.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic structural view of a titanium liquid atomizing mechanism according to the present invention.
Fig. 3 is a schematic structural view of a rotary granulating mechanism of the present invention.
Fig. 4 is a left side view of the rotary pelletizing mechanism of the present invention.
In the figure:
the device comprises a machine frame body, a feeding device, a 21-mounting frame, a 22-screw rod sliding table, a 23-sliding frame, a 24-titanium rod clamping piece, a 25-titanium rod, a 3-high-frequency generator, a 4-mounting plate, a 5-electromagnetic heating ring, a 6-titanium liquid atomizing mechanism, a 61-liquid collecting tank, a 62-three-way pipe, a 63-spacer, a 7-rotary granulating mechanism, a 71-rotary motor, a 72-fixed shell, a 73-rotary disc, a 74-through hole, a 75-discharge port, an 8-speed regulator and a 9-power distribution cabinet.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1 to 4:
the invention provides titanium alloy powder processing equipment and a preparation process, wherein a
The titanium rod 25 is fixed on the titanium rod clamping piece 24 in the
When the titanium liquid atomizing
The
A preparation process of titanium alloy powder is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: feeding, namely fixing the titanium rod on the titanium rod clamping piece, adjusting the rotating speed of the speed regulator to be 150-one 200r/min, and slowly feeding the fixed titanium rod into an electromagnetic heating ring through a screw rod sliding table to realize visual melting of the titanium rod;
step two: melting, namely controlling the electromagnetic heating ring to generate heat by the electromagnetic heating ring through a high-frequency generator, controlling the temperature to be 1600-1670 ℃, enabling the titanium rod to be in contact with the inside of the electromagnetic heating ring, melting under high-temperature control to obtain titanium liquid, melting the titanium rod in a high-frequency melting mode, realizing work in a high-purity environment, and improving the cleanliness of raw materials;
step three: atomizing, namely dropping the titanium liquid obtained in the step two into a liquid collecting tank, introducing high-pressure compressed gas into the three-way pipe at the moment, and blowing the titanium liquid to the partition by utilizing the negative pressure effect to obtain atomized titanium liquid, so that the process flow is shortened, and the working efficiency is improved;
step four: and (3) granulating, namely feeding the atomized titanium liquid obtained in the third step into the rotating disk through a pipeline, driving the rotating disk to rotate by the rotating motor, throwing the atomized titanium liquid out through the rotating disk under the action of centrifugal force to form metal dropping liquid, and obtaining titanium powder by the metal dropping liquid through spheroidizing condensation, so that the production period is shortened, and the production cost is reduced.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
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