CN214300310U - Novel titanium alloy surface laser gas oxidation device - Google Patents
Novel titanium alloy surface laser gas oxidation device Download PDFInfo
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- CN214300310U CN214300310U CN202120423817.5U CN202120423817U CN214300310U CN 214300310 U CN214300310 U CN 214300310U CN 202120423817 U CN202120423817 U CN 202120423817U CN 214300310 U CN214300310 U CN 214300310U
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Abstract
The utility model relates to a novel titanium alloy surface laser gas oxidation device, comprises a workbench, the workstation top is equipped with the removal arm of machinery, is equipped with the laser head on the removal arm of machinery, and the lower extreme that removes the arm of machinery is equipped with the air feed structure, and the air feed structure is located the laser head outside and with the ring body that removes the arm of machinery and be connected including the cover, and the ring body has annular air flue, is arc structure interval distribution along circumference on the lower terminal surface of ring body and has a plurality of air supply pipes, and arc structure orientation removes the moving direction arch of arm of machinery, and each air supply pipe all communicates with annular air flue. The ring body is provided with an air inlet which is communicated with an oxygen source and a diluent gas source through a gas mixing structure. The lower part of each air supply pipe is provided with an inclined part which is inclined inwards from top to bottom in the radial direction, and the lower end of the inclined part is provided with an air outlet. The oxygen permeation device can form the oxygen permeation layer with low roughness, dense quality, high hardness and excellent wear resistance on the surface of the titanium alloy.
Description
Technical Field
The utility model relates to a metal surface oxygen permeability technical field, concretely relates to novel titanium alloy surface laser gas oxidation device.
Background
The titanium alloy has the advantages of high specific strength and the like, has potential application value in various industries such as new energy automobiles and the like, but has low surface hardness and poor wear resistance, and limits further application of the titanium alloy. The surface hardness and the wear resistance of the titanium alloy can be improved by oxygen permeation on the surface of the titanium alloy. At present, methods for oxygen permeation on the surface of titanium alloy include heating furnace heat preservation oxygen permeation, micro-arc oxidation, glow plasma oxygen permeation and the like. By adopting the methods, the surface of the titanium alloy is kept in a solid state in the oxygen permeation process, the diffusion speed of oxygen elements in the solid titanium alloy is low, the depth of an oxygen permeation layer is shallow and generally less than 60 micrometers, the typical depth of the oxygen permeation layer is 20-30 micrometers, and the method cannot be applied to high-requirement working conditions. In addition, by adopting the oxygen permeation method, the titanium alloy needs to be kept warm for dozens or even hundreds of hours in a high-temperature environment, so that the crystal grains of the matrix are easily increased, and the mechanical property of the matrix is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel titanium alloy surface laser gas oxidation device to the infiltration oxygen layer degree of depth that exists is little among the solution prior art, the heat preservation time is long causes the base member crystalline grain easily thick, leads to being applied to the operating mode problem of high requirement.
In order to achieve the above object, the utility model discloses a novel titanium alloy surface laser gas oxidation device adopts following technical scheme: a novel titanium alloy surface laser gas oxidation device comprises a workbench, wherein a movable mechanical arm is arranged above the workbench, a laser head is arranged on the movable mechanical arm, a gas supply structure for providing an oxygen permeation gas atmosphere to the surface of a titanium alloy on the workbench is arranged at the lower end of the movable mechanical arm, the gas supply structure comprises a ring body which is covered outside the laser head and is connected with the movable mechanical arm, the ring body is provided with an annular gas passage, a plurality of gas supply pipes are distributed on the lower end surface of the ring body at intervals in an arc structure along the circumferential direction, the arc structure protrudes towards the moving direction of the movable mechanical arm, and each gas supply pipe is communicated with the annular gas passage; the ring body is provided with an air inlet which is communicated with an oxygen source and a diluent gas source through a gas mixing structure; the lower part of each air supply pipe is provided with an inclined part which is inclined inwards from top to bottom in the radial direction, and the lower end of the inclined part is provided with an air outlet.
And an air outlet of each air supply pipe is provided with a flared structure of a horn mouth.
The gas mixing structure comprises a shell, wherein a wavy gas flow channel is arranged in the shell, an inlet of the gas flow channel is connected with an oxygen source and a diluent gas source through a first gas pipe, and an outlet of the gas flow channel is connected with a gas inlet of the gas supply structure through a second gas pipe.
The inner wall surface of the ring body is provided with annular connecting plates, and screw holes used for being connected with the movable mechanical arm are formed in the annular connecting plates at intervals along the circumferential direction.
The upper end of the ring body is provided with a heat insulation pad, and the heat insulation pad is provided with a through hole corresponding to the screw hole.
The utility model has the advantages that: the titanium alloy is placed on a workbench, the surface of the titanium alloy is heated by laser until the titanium alloy is melted to form a molten pool, and oxygen permeation gas atmosphere is provided by diluted oxygen to realize oxygen permeation on the surface of the titanium alloy. Because the depth of the molten pool can be increased by laser heating, the molten pool can generate convection under the action of a heat source, oxygen elements are quickly transmitted to the deep layer of the molten pool, the diffusion speed of the oxygen elements in the liquid state is high, the oxygen elements can also be ensured to quickly enter the deep layer of the molten pool, and the thickness of the oxygen permeation layer on the surface of the titanium alloy is greatly increased. And diluted oxygen is used as reaction atmosphere, so that the reaction speed of pure oxygen and liquid titanium alloy can be prevented from forming coarse, loose and hard and brittle reactants on the surface of the titanium alloy. And in the forward moving process of the moving mechanical arm, the reaction atmosphere can still stay around the just solidified molten pool for a little time backwards, the molten pool is protected from the influence of the atmosphere in the air, and an oxygen permeation layer with low roughness, dense quality, high hardness and excellent wear resistance is formed on the surface of the titanium alloy.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a novel titanium alloy surface laser gas oxidation device according to the present invention;
FIG. 2 is a schematic view of the structure of the gas supply structure of FIG. 1;
fig. 3 is a schematic structural diagram of a gas mixing structure in an embodiment two of the novel titanium alloy surface laser gas oxidation device of the present invention.
Detailed Description
The utility model discloses a novel gaseous oxidation of titanium alloy surface laser device's embodiment one, as shown in fig. 1-2, including workstation 1, workstation 1 top is provided with removes arm 3, removes the arm and is prior art, can adopt the arm on the laser welding equipment, also can adopt the laser welding robot, can realize upper and lower motion to and before realizing, after remove or left and right removal can, no longer detail in this embodiment removes the concrete structure of arm. The movable mechanical arm 3 is provided with a laser head 4, and particularly the laser head 4 is arranged at the lower end of the movable mechanical arm.
The lower end of the mobile mechanical arm is provided with a gas supply structure 5 for providing oxygen permeation gas atmosphere to the surface of the titanium alloy 2 on the workbench. The gas supply structure is located the laser head outside and with the ring body 6 that removes the arm and be connected including the cover, and the ring body has annular air flue 20, is arc structure interval distribution along circumference on the lower terminal surface of ring body and has a plurality of air supply pipes 7, and arc structure orientation removes the moving direction arch of arm, and each air supply pipe all communicates with annular air flue. The ring body is provided with an air inlet 10 communicated with the annular air passage, and the air inlet is communicated with an oxygen source and a diluent gas source through a gas mixing structure. The diluent gas is argon gas, and the oxygen source and the diluent gas source are an oxygen cylinder 17 and an argon cylinder 18 respectively. The lower portion of each gas supply pipe has an inclined portion 8 inclined radially inwardly from top to bottom, the lower end of the inclined portion having a gas outlet 19. The air outlet of each air supply pipe is provided with a flared structure 9 with a horn mouth, so that the space volume of the oxygen permeation gas atmosphere can be increased.
The gas mixing structure comprises a shell 11, wherein a wave-shaped gas flow channel 12 is arranged in the shell, the inlet of the gas flow channel is connected with an oxygen source and a diluent gas source through a first gas pipe 15, and the outlet of the gas flow channel is connected with the gas inlet of the gas supply structure through a second gas pipe 16. The oxygen cylinder is provided with a first flowmeter, and the argon cylinder is provided with a second flowmeter. The inner wall surface of the ring body 6 is provided with annular connecting plates 21, and the annular connecting plates are provided with screw holes 22 at intervals along the circumferential direction for being connected with a mobile mechanical arm. Because the gas supply structure is close to the molten bath, the temperature of the gas supply structure is high, in order to avoid the temperature rise of the movable mechanical arm to be too high, a heat insulation pad 23 is arranged at the upper end of the ring body, and a through hole 24 corresponding to the screw hole is formed in the heat insulation pad.
When the titanium alloy surface oxygen diffusion device is used, a titanium alloy is placed on a workbench, flow valves on an oxygen cylinder and an argon cylinder are adjusted to dilute oxygen, the surface of the titanium alloy is heated by laser until the titanium alloy is melted to form a molten pool, and the diluted oxygen provides an oxygen permeation gas atmosphere to realize the surface oxygen permeation of the titanium alloy. Because the depth of the molten pool can be increased by laser heating, the molten pool can generate convection under the action of a heat source, oxygen elements are quickly transmitted to the deep layer of the molten pool, the diffusion speed of the oxygen elements in the liquid state is high, the oxygen elements can also be ensured to quickly enter the deep layer of the molten pool, and the thickness of the oxygen permeation layer on the surface of the titanium alloy is greatly increased. And diluted oxygen is used as reaction atmosphere, so that the reaction speed of pure oxygen and liquid titanium alloy can be prevented from forming coarse, loose and hard and brittle reactants on the surface of the titanium alloy. And in the forward moving process of the moving mechanical arm, the reaction atmosphere can still stay around the just solidified molten pool for a little time backwards, the molten pool is protected from the influence of the atmosphere in the air, and an oxygen permeation layer with low roughness, dense quality, high hardness and excellent wear resistance is formed on the surface of the titanium alloy.
The utility model discloses a novel gaseous embodiment two of titanium alloy surface laser oxidation device, as shown in fig. 3, the difference with embodiment one only lies in the structure difference of gas mixing structure, and gas mixing structure includes shell 25 in this embodiment, and the shell has the gas inlet 26 and the gas outlet 27 that supply the mist to get into, is provided with fan 28 between inside and gas inlet of shell and the gas outlet, and fan 28's power is provided by gaseous air current.
In other embodiments of the utility model, under the premise of ensuring that the temperature rise of the movable mechanical arm is not high, a heat insulation pad is not required to be arranged between the air supply structure and the movable mechanical arm; the gas supply structure and the movable mechanical arm can be welded together; the air outlet of each air supply pipe is also not provided with a flaring structure of a bell mouth; the power for the fan may also be provided by a motor.
Claims (5)
1. A novel titanium alloy surface laser gas oxidation device is characterized in that: the titanium alloy welding device comprises a workbench, a movable mechanical arm is arranged above the workbench, a laser head is arranged on the movable mechanical arm, a gas supply structure for providing an oxygen permeation gas atmosphere to the surface of a titanium alloy on the workbench is arranged at the lower end of the movable mechanical arm, the gas supply structure comprises a ring body which is covered on the outer side of the laser head and connected with the movable mechanical arm, the ring body is provided with an annular gas passage, a plurality of gas supply pipes are distributed on the lower end surface of the ring body at intervals along an arc-shaped structure along the circumferential direction, the arc-shaped structure protrudes towards the moving direction of the movable mechanical arm, and each gas supply pipe is communicated with the annular gas passage; the ring body is provided with an air inlet which is communicated with an oxygen source and a diluent gas source through a gas mixing structure; the lower part of each air supply pipe is provided with an inclined part which is inclined inwards from top to bottom in the radial direction, and the lower end of the inclined part is provided with an air outlet.
2. The novel titanium alloy surface laser gas oxidation device according to claim 1, characterized in that: and an air outlet of each air supply pipe is provided with a flared structure of a horn mouth.
3. The novel titanium alloy surface laser gas oxidation device according to claim 1, characterized in that: the gas mixing structure comprises a shell, wherein a wavy gas flow channel is arranged in the shell, an inlet of the gas flow channel is connected with an oxygen source and a diluent gas source through a first gas pipe, and an outlet of the gas flow channel is connected with a gas inlet of the gas supply structure through a second gas pipe.
4. The novel titanium alloy surface laser gas oxidation apparatus according to any one of claims 1 to 3, characterized in that: the inner wall surface of the ring body is provided with annular connecting plates, and screw holes used for being connected with the movable mechanical arm are formed in the annular connecting plates at intervals along the circumferential direction.
5. The novel titanium alloy surface laser gas oxidation device according to claim 4, characterized in that: the upper end of the ring body is provided with a heat insulation pad, and the heat insulation pad is provided with a through hole corresponding to the screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120423817.5U CN214300310U (en) | 2021-02-26 | 2021-02-26 | Novel titanium alloy surface laser gas oxidation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120423817.5U CN214300310U (en) | 2021-02-26 | 2021-02-26 | Novel titanium alloy surface laser gas oxidation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214300310U true CN214300310U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202120423817.5U Active CN214300310U (en) | 2021-02-26 | 2021-02-26 | Novel titanium alloy surface laser gas oxidation device |
Country Status (1)
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| CN (1) | CN214300310U (en) |
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2021
- 2021-02-26 CN CN202120423817.5U patent/CN214300310U/en active Active
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