CN213835540U - Self-adaptive preheating slow-cooling laser cladding head - Google Patents
Self-adaptive preheating slow-cooling laser cladding head Download PDFInfo
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- CN213835540U CN213835540U CN202022795913.0U CN202022795913U CN213835540U CN 213835540 U CN213835540 U CN 213835540U CN 202022795913 U CN202022795913 U CN 202022795913U CN 213835540 U CN213835540 U CN 213835540U
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Abstract
The utility model relates to a laser cladding technical field is a self-adaptation preheats slow cooling laser cladding head, and it includes casing, laser output head, end cover, lower casing, interior casing, goes up the last laser cavity that link up about the casing middle part is equipped with, goes up the laser output head that the inboard fixed mounting in casing upper end was located its top, goes up the interior casing that laser intracavity fixed mounting has the upper end to be located laser output head. The utility model has reasonable and compact structure and convenient use, realizes preheating before melting and slow cooling after melting through the lower power density annular light spot of the non-overlapped area; laser cladding is realized through the circular light spots with higher power density in the overlapped area; through to inputing inert gas in the protection gas channel, not only can prevent that the powder of third powder feeding channel output from not oxidizing, can also prevent to block in the third powder feeding channel and cause the unsmooth powder whereabouts, have characteristics quick, high-efficient and that the inside thermal stress of coating is little.
Description
Technical Field
The utility model relates to a laser cladding technical field is a self-adaptive preheating slow cooling laser cladding head.
Background
The laser cladding technology is a surface processing technology with the most development prospect in the 21 st century, and the technology is rapidly developed along with the manufacturing concept of environmental protection and energy conservation which is continuously deep in recent years. Compared with other surface processing technologies, the technology is characterized in that powder which is coaxially fed with powder and is positioned on the surface of a test piece to be clad and a thin layer on the surface of the test piece are quickly melted and quickly fused by using a high-energy-density laser beam to form a cladding layer with good metallurgical bonding, and the cladding layer obtained by laser cladding surface treatment not only can enable the test piece to have excellent metallurgical bonding characteristics, but also can obviously improve the properties of hardness, wear resistance, corrosion resistance, high temperature resistance, oxidation resistance and the like of the surface of the test piece.
However, in the laser cladding repair process, since the test piece to be clad is subjected to the rapid heating and rapid cooling processes, a very large temperature gradient exists in the cladding layer and the interior of the test piece in the process, so that the interior of the test piece has a large thermal stress, a crack source is generated along the joint interface of the test piece and the cladding layer, and the crack source extends and expands along the direction perpendicular to the laser scanning direction, the comprehensive use performance of the cladding test piece is seriously influenced, and the service life of the cladding test piece is finally and directly influenced.
Disclosure of Invention
The utility model provides a self-adaptive preheating slow cooling laser cladding head has overcome above-mentioned prior art not enough, and it can effectively solve current laser cladding repair process and lead to the problem of crackle because of the inside thermal stress of coating is big.
The technical scheme of the utility model is realized through following measure: an adaptive preheating slow-cooling laser cladding head comprises an upper shell, a laser output head, an end cover, a lower shell, an inner shell, an upper laser cavity which is communicated up and down is arranged in the middle of the upper shell, the laser output head with the upper end positioned above the upper end of the upper shell is fixedly installed on the inner side of the upper end of the upper shell, the inner shell with the upper end positioned in the laser output head is fixedly installed in the upper laser cavity, the inner shell comprises an upper barrel, an upper cone barrel, a lower cone barrel and a lower outlet barrel which are fixedly installed together from top to bottom in sequence, the upper cone barrel is in a circular table shape with a small upper part and a large lower part, the lower cone barrel is in a circular table shape with a large upper part and a small lower part, a reflector is arranged on the outer side of the upper cone; a lower shell is fixedly arranged on the lower side of the upper shell, a lower laser cavity which is vertically communicated and can be communicated with the upper laser cavity is arranged in the middle of the lower shell, a first convex lens, a second convex lens and a third convex lens are distributed on the inner side of the upper part of the lower shell at intervals from top to bottom, and a protective mirror is arranged on the inner side of the lower part of the lower shell; the laser output head is characterized in that an end cover fixedly mounted together with the outer side of the upper end of an upper shell is arranged on the outer side of the middle of the laser output head, at least three first powder feeding channels which are communicated up and down are distributed on the upper side of the end cover along the circumference, second powder feeding channels which are communicated up and down are arranged on the upper shell corresponding to each first powder feeding channel, third powder feeding channels which are communicated up and down are arranged on the lower side of the lower shell corresponding to each second powder feeding channel, and the upper ends of the third powder feeding channels are communicated with the lower ends of the second powder feeding channels corresponding to the positions.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the cooling water pipe can be further included, the outer side of the middle of the lower shell is provided with a spiral groove from top to bottom, the cooling water pipe is arranged in the spiral groove, the upper end of the cooling water pipe is provided with a cooling water inlet, and the lower end of the cooling water pipe is provided with a cooling water outlet.
Above-mentioned every third send whitewashed passageway all can be outer high interior low form slope, all be equipped with the protection gas passageway on the lower casing that corresponds every third send whitewashed passageway lower part position, the protection gas passageway includes straight blind hole and oblique blind hole, the lower casing downside that corresponds every third send whitewashed passageway outside position all is equipped with the oblique blind hole that is outer high interior low form slope, the lower casing middle part outside that corresponds every third send whitewashed passageway position all is equipped with straight blind hole, straight blind hole inner communicates with the oblique blind hole upper end of corresponding position.
The laser cavity comprises a first straight hole, a second straight hole and a third taper hole, the aperture of the second straight hole is larger than the first straight hole, the third taper hole is in a truncated cone shape with a big top and a small bottom, a laser output head with an upper end above the upper shell is fixedly installed in the first straight hole, at least two upper fixing rods located in the second straight hole are fixedly installed on the outer side of the upper feeding barrel along the circumference interval, at least two lower fixing rods located in the second straight hole are fixedly installed on the outer side of the lower feeding barrel along the circumference interval, the outer ends of the upper fixing rods and the outer ends of the lower fixing rods are fixedly installed together with the inner side of the upper shell in a corresponding position, and a reflecting condenser lens is arranged on the inner side of the upper shell corresponding to the position between the upper fixing rods and the lower fixing rods.
And the outer side of the middle part of the upper shell corresponding to each second powder feeding channel position can be provided with a carrier gas channel which can be communicated with the second powder feeding channel corresponding to the position.
The powder feeding device also comprises an airtight pipe, a first ring groove is formed in the outer side of the lower end of the second powder feeding channel, a second ring groove is formed in the outer side of the upper end of the third powder feeding channel, and the airtight pipe with the lower end located in the second ring groove at the corresponding position is arranged in the first ring groove.
The upper fixing ring and the upper fixing bolts can be further included, the outer side of the upper end of the upper shell is sleeved with the upper fixing ring, the upper end of the upper fixing ring is fixedly installed together with the lower side of the end cover, at least two upper fixing bolts are distributed on the outer side of the upper fixing ring at intervals along the circumference, and the upper fixing ring is fixedly installed together with the upper shell through the upper fixing bolts.
The upper end of the lower shell is fixedly provided with a lower fixing ring, the lower fixing ring is circumferentially distributed at intervals on the lower side of the lower fixing ring with at least two lower fixing bolts, and the lower fixing ring is fixedly arranged with the lower side of the upper shell through the lower fixing bolts.
The powder feeding device also comprises a powder feeding joint, wherein the powder feeding joint with the upper end positioned above the end cover is arranged in the first powder feeding channel.
The upper side of the end cover can be uniformly provided with four first powder feeding channels which are communicated up and down along the circumference.
The utility model has reasonable and compact structure and convenient use, realizes preheating before melting and slow cooling after melting through the lower power density annular light spot of the non-overlapped area; laser cladding is realized through the circular light spots with higher power density in the overlapped area; by inputting the inert gas into the protective gas channel, not only can the powder output by the third powder feeding channel be prevented from being oxidized, but also the powder can be prevented from falling unsmoothly due to blockage in the third powder feeding channel; by inputting inert gas into the carrier gas channel, the powder in the second powder feeding channel flows downwards uniformly and continuously under the pushing of the inert gas; through setting up the third powder feeding channel that is high outward low form slope, make the powder landing in the third powder feeding channel to it is more even to go out the powder, has characteristics quick, high-efficient and that the thermal stress of coating inside is little.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
The codes in the figures are respectively: the laser powder feeding device comprises an upper shell 1, a laser output head 2, an end cover 3, a lower shell 4, an upper feeding barrel 5, an upper conical barrel 6, a lower conical barrel 7, a lower discharging barrel 8, an upper fixing rod 9, a lower fixing rod 10, an upper laser cavity 11, a lower laser cavity 12, a first powder feeding channel 13, a second powder feeding channel 14, a third powder feeding channel 15, a carrier gas channel 16, a protective gas channel 17, an airtight tube 18, an upper fixing ring 19, an upper fixing bolt 20, a lower fixing ring 21, a lower fixing bolt 22, a powder feeding joint 23, a cooling water tube 24, a reflector 25, a reflecting condenser 26, a condenser 27, a first convex lens 28, a second convex lens 29, a third convex lens 30 and a protective lens 31.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in fig. 1, the adaptive preheating slow cooling laser cladding head comprises an upper shell 1, a laser output head 2, an end cover 3, a lower shell 4, an inner shell, wherein an upper laser cavity 11 which is communicated up and down is arranged in the middle of the upper shell 1, the laser output head 2 with the upper end positioned above the upper laser cavity is fixedly installed on the inner side of the upper end of the upper shell 1, the inner shell with the upper end positioned in the laser output head 2 is fixedly installed in the upper laser cavity 11, the inner shell comprises an upper feeding cylinder 5, an upper conical cylinder 6, a lower conical cylinder 7 and a lower discharging cylinder 8 which are fixedly installed together from top to bottom in sequence, the upper conical cylinder 6 is in a circular truncated cone shape with a small upper part and a large lower part, a reflector 25 is arranged on the outer side of the upper conical cylinder 6, a reflecting condenser 26 is arranged on the inner side of the upper shell 1 corresponding to the position of the inner shell, and a condenser 27 is arranged on the inner side of the lower part of the lower discharging cylinder 8; a lower shell 4 is fixedly arranged at the lower side of the upper shell 1, a lower laser cavity 12 which is vertically communicated and can be communicated with the upper laser cavity 11 is arranged in the middle of the lower shell 4, a first convex lens 28, a second convex lens 29 and a third convex lens 30 are vertically distributed at intervals at the inner side of the upper part of the lower shell 4, and a protective mirror 31 is arranged at the inner side of the lower part of the lower shell 4; the outer side of the middle of the laser output head 2 is provided with an end cover 3 fixedly mounted together with the outer side of the upper end of an upper shell 1, at least three first powder feeding channels 13 which are communicated up and down are distributed on the upper side of the end cover 3 along the circumference, second powder feeding channels 14 which are communicated up and down are arranged on the upper shell 1 corresponding to the positions of the first powder feeding channels 13, third powder feeding channels 15 which are communicated up and down are arranged on the lower side of a lower shell 4 corresponding to the positions of the second powder feeding channels 14, and the upper ends of the third powder feeding channels 15 are communicated with the lower ends of the second powder feeding channels 14 corresponding to the positions.
The utility model discloses a concrete use does:
(1) the laser beam with constant power density enters the utility model through the laser output head 2;
(2) a part of laser beams directly enter the inner shell to be transmitted downwards, and are continuously output downwards vertically after being condensed by the condenser 27 in the lower outlet cylinder 8 to form a first circular laser beam, the other part of laser beams are firstly reflected by the reflector 25 arranged on the outer surface of the upper conical cylinder 6 and the reflection condenser 26 arranged on the inner side of the upper shell 1 to enter the lower laser cavity 12, then are continuously output downwards vertically after passing through the first convex lens 28, the second convex lens 29 and the third convex lens 30 to form a second circular laser beam, and the diameter of the first circular laser beam is smaller than that of the second circular laser beam;
(3) the second circular laser beam is partially overlapped with the first circular laser beam and continuously vertically outputs downwards along the lower laser cavity 12, and two circular light spots are output through a protective lens 31 arranged on the inner side of the lower portion of the lower shell 4, wherein the circular light spots formed by the second circular laser beam are partially overlapped with the center of the circular light spots formed by the first circular laser beam, and the power density of the circular light spots forming the overlapped area is 2 times of that of the annular light spots forming the non-overlapped area.
In the laser cladding process, when cladding a certain part of a test piece, preheating the test piece by using the lower-power-density annular light spot in the non-overlapped area, then laser cladding the test piece by using the higher-power-density circular light spot in the overlapped area, and finally slowly cooling the cladding part of the test piece after cladding by using the lower-power-density annular light spot in the non-overlapped area again, so that the preheating before melting and slowly cooling after melting are realized, the larger temperature gradient between the coating and the matrix is further reduced, the thermal stress in the coating is reduced, the generation of a crack source in the coating is inhibited, and the good metallurgical bonding of the coating and the test piece is obtained; in addition, when the laser beam propagates in the lower laser cavity 12, the laser beam passing through the upper focal point of the first convex lens 28 passes through the first convex lens 28 to form a parallel beam, while the propagation direction of the laser beam passing through the center of the first convex lens 28 is unchanged, the parallel beam passes through the second convex lens 29 to converge at the lower focal point of the second convex lens 29 (i.e., the upper focal point of the third convex lens 30), the laser beam passes through the third convex lens 30 to form a parallel beam again, and the upper focal point of the third convex lens 30 is very close to (has a small focal length) the third convex lens 30, so the parallel beams can be the same beam.
The self-adaptive preheating slow-cooling laser cladding head can be further optimized or/and improved according to actual needs:
as shown in the attached figure 1, the cooling water pipe 24 is further included, a spiral groove is formed in the outer side of the middle of the lower shell 4 from top to bottom, the cooling water pipe 24 is arranged in the spiral groove, the upper end of the cooling water pipe 24 is a cooling water inlet, and the lower end of the cooling water pipe 24 is a cooling water outlet. In the use, through setting up condenser tube 24 for the laser cladding in-process cooling water flows downwards in the helicla flute, cools off lower casing 4 and prevents that powder from appearing gluing the powder phenomenon in third powder feeding channel 15, thereby guarantees the orderly operation of laser cladding process.
As shown in the attached drawing 1, each third powder feeding channel 15 is inclined in a high-outside and low-inside manner, a shielding gas channel 17 is arranged on the lower shell 4 corresponding to the lower position of each third powder feeding channel 15, each shielding gas channel 17 comprises a straight blind hole and an inclined blind hole, the lower side of the lower shell 4 corresponding to the outer position of each third powder feeding channel 15 is provided with an inclined blind hole inclined in a high-outside and low-inside manner, the outer side of the middle part of the lower shell 4 corresponding to the position of each third powder feeding channel 15 is provided with a straight blind hole, and the inner end of each straight blind hole is communicated with the upper end of the inclined blind hole corresponding to the position. In the using process, the third powder feeding channel 15 which is inclined in a shape of high outside and low inside is arranged to convey the powder to the lower side in an inclined way, so that the utility model has better powder feeding effect, and the powder slides in the third powder feeding channel 15 to lead the powder to be more uniform; inert gas output from the inclined blind hole is input from the straight blind hole, so that not only can powder output from the third powder feeding channel 15 be prevented from not being oxidized, but also small liquid drops of a molten pool formed in laser cladding can be prevented from splashing into the third powder feeding channel 15, and the powder falling in the third powder feeding channel 15 is heated and melted to be stuck in the third powder feeding channel 15, so that the powder falling in the third powder feeding channel 15 is unsmooth.
As shown in the attached drawing 1, the laser device further comprises an upper fixing rod 9 and a lower fixing rod 10, the upper laser cavity 11 comprises a first straight hole, a second straight hole and a third taper hole which are sequentially communicated from top to bottom, the aperture of the second straight hole is larger than that of the first straight hole, the third taper hole is in a circular truncated cone shape with a large top and a small bottom, a laser output head 2 with an upper end located above the upper shell 1 is fixedly installed in the first straight hole, at least two upper fixing rods 9 located in the second straight hole are fixedly installed on the outer side of the upper feeding barrel 5 and along the circumference at intervals, at least two lower fixing rods 10 located in the second straight hole are fixedly installed on the outer side of the lower feeding barrel 8 along the circumference at intervals, the outer ends of the upper fixing rods 9 and the outer ends of the lower fixing rods 10 are fixedly installed together with the corresponding positions on the inner side of the upper shell 1, and a reflection condenser 26 is arranged on the inner side of the upper shell 1 corresponding to the position between the upper fixing rods 9 and the lower fixing rods 10. This arrangement facilitates the fixing of the inner housing in the upper laser cavity 11 and the entry of the laser light reflected by the reflecting condenser 26 into the lower laser cavity 12 during use.
As shown in fig. 1, a carrier gas channel 16 capable of communicating with the second powder feeding channel 14 at the corresponding position is provided at the outer side of the middle part of the upper housing 1 corresponding to each second powder feeding channel 14. In the using process, inert gas is introduced into the carrier gas channel 16, the powder in the second powder feeding channel 14 meets the carrier gas channel 16 communicated with the second powder feeding channel 14 in the falling process, and the powder uniformly and continuously flows downwards under the pushing of the inert gas in the carrier gas channel 16.
As shown in the attached drawing 1, the powder feeding device further comprises an airtight pipe 18, a first annular groove is formed in the outer side of the lower end of the second powder feeding channel 14, a second annular groove is formed in the outer side of the upper end of the third powder feeding channel 15, and the airtight pipe 18 with the lower end located in the second annular groove at the corresponding position is arranged in the first annular groove. In the use, through setting up gas-tight pipe 18, make the powder of last casing 1 and lower casing 4 juncture evenly to be carried the powder by second powder feeding channel 14 to the third powder feeding channel 15 of oblique below on the one hand, on the other hand guarantees the gas tightness of last casing 1 and lower casing 4 juncture.
As shown in the attached drawing 1, the upper casing 1 further comprises an upper fixing ring 19 and upper fixing bolts 20, the upper fixing ring 19 is sleeved on the outer side of the upper end of the upper casing 1, the upper end of the upper fixing ring 19 is fixedly mounted with the lower side of the end cover 3, at least two upper fixing bolts 20 are distributed on the outer side of the upper fixing ring 19 at intervals along the circumference, and the upper fixing ring 19 is fixedly mounted with the upper casing 1 through the upper fixing bolts 20. By this arrangement, the end cap 3 is easily mounted with the upper housing 1 during use.
As shown in fig. 1, the portable electronic device further comprises a lower fixing ring 21 and a lower fixing bolt 22, the lower fixing ring 21 is fixedly mounted on the outer side of the upper end of the lower shell 4, at least two lower fixing bolts 22 are distributed on the lower side of the lower fixing ring 21 at intervals along the circumference, and the lower fixing ring 21 is fixedly mounted with the lower side of the upper shell 1 through the lower fixing bolts 22. With this arrangement, the upper case 1 and the lower case 4 are easily mounted together during use.
As shown in fig. 1, the powder feeding device further comprises a powder feeding connector 23, and the powder feeding connector 23 with the upper end positioned above the end cover 3 is installed in the first powder feeding channel 13. In the use, through setting up powder feeding joint 23, be convenient for the utility model discloses a plurality of first powder feeding channel 13 are connected with powder feeding machine.
As shown in fig. 1, four first powder feeding channels 13 which are vertically through are uniformly distributed on the upper side of the end cover 3 along the circumference. In the use, through such setting, make the utility model discloses have more even powder feeding effect.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (10)
1. An adaptive preheating slow-cooling laser cladding head is characterized by comprising an upper shell, a laser output head, an end cover, a lower shell, an inner shell and a lower laser cavity, wherein the middle part of the upper shell is provided with an upper laser cavity which is communicated up and down; a lower shell is fixedly arranged on the lower side of the upper shell, a lower laser cavity which is vertically communicated and can be communicated with the upper laser cavity is arranged in the middle of the lower shell, a first convex lens, a second convex lens and a third convex lens are distributed on the inner side of the upper part of the lower shell at intervals from top to bottom, and a protective mirror is arranged on the inner side of the lower part of the lower shell; the laser output head is characterized in that an end cover fixedly mounted together with the outer side of the upper end of an upper shell is arranged on the outer side of the middle of the laser output head, at least three first powder feeding channels which are communicated up and down are distributed on the upper side of the end cover along the circumference, second powder feeding channels which are communicated up and down are arranged on the upper shell corresponding to each first powder feeding channel, third powder feeding channels which are communicated up and down are arranged on the lower side of the lower shell corresponding to each second powder feeding channel, and the upper ends of the third powder feeding channels are communicated with the lower ends of the second powder feeding channels corresponding to the positions.
2. The adaptive pre-heating slow cooling laser cladding head as claimed in claim 1, further comprising a cooling water pipe, wherein a spiral groove is formed in the outer side of the middle portion of the lower housing from top to bottom, the cooling water pipe is disposed in the spiral groove, the upper end of the cooling water pipe is a cooling water inlet, and the lower end of the cooling water pipe is a cooling water outlet.
3. The adaptive preheating slow cooling laser cladding head according to claim 1 or 2, wherein each third powder feeding channel is inclined in a shape of high outside and low inside, the lower casing corresponding to the lower position of each third powder feeding channel is provided with a shielding gas channel, the shielding gas channel comprises a straight blind hole and an inclined blind hole, the lower side of the lower casing corresponding to the outer position of each third powder feeding channel is provided with an inclined blind hole inclined in a shape of high outside and low inside, the outer side of the middle part of the lower casing corresponding to the position of each third powder feeding channel is provided with a straight blind hole, and the inner end of the straight blind hole is communicated with the upper end of the inclined blind hole corresponding to the position.
4. The adaptive preheating slow cooling laser cladding head as claimed in claim 1 or 2, further comprising an upper fixing rod and a lower fixing rod, wherein the upper laser cavity comprises a first straight hole, a second straight hole and a third tapered hole which are sequentially communicated from top to bottom, the aperture of the second straight hole is larger than that of the first straight hole, the third tapered hole is in a circular truncated cone shape with a large top and a small bottom, a laser output head with an upper end located above the upper shell is fixedly installed in the first straight hole, at least two upper fixing rods located in the second straight hole are fixedly installed on the outer side of the upper barrel and along the circumference at intervals, at least two lower fixing rods located in the second straight hole are fixedly installed on the outer side of the lower barrel along the circumference at intervals, the outer ends of the upper fixing rods and the outer ends of the lower fixing rods are fixedly installed together with the inner side of the upper shell at corresponding positions, and a reflection condenser is installed on the inner side of the upper shell corresponding to the position between the upper fixing rods and the lower fixing rods.
5. The adaptive preheating slow cooling laser cladding head as recited in claim 3, further comprising an upper fixing rod and a lower fixing rod, wherein the upper laser cavity comprises a first straight hole, a second straight hole and a third tapered hole which are sequentially communicated from top to bottom, the aperture of the second straight hole is larger than that of the first straight hole, the third tapered hole is in a truncated cone shape with a large top and a small bottom, the upper end of the laser output head is fixedly installed in the first straight hole and positioned above the upper shell, at least two upper fixing rods positioned in the second straight hole are fixedly installed on the outer side of the upper feeding barrel and circumferentially spaced, at least two lower fixing rods positioned in the second straight hole are fixedly installed on the outer side of the lower feeding barrel circumferentially spaced, the outer ends of the upper fixing rods and the outer ends of the lower fixing rods are fixedly installed together with the inner side of the upper shell, and the inner side of the upper shell corresponding to the position between the upper fixing rods and the lower fixing rods is provided with a reflective condenser.
6. The adaptive preheating slow cooling laser cladding head as claimed in claim 1, 2 or 5, wherein the outer side of the middle portion of the upper housing corresponding to each position of the second powder feeding channel is provided with a carrier gas channel capable of communicating with the corresponding position of the second powder feeding channel.
7. The adaptive preheating slow cooling laser cladding head as claimed in claim 3, wherein the outer side of the middle portion of the upper housing corresponding to each second powder feeding channel is provided with a carrier gas channel capable of communicating with the corresponding second powder feeding channel.
8. The adaptive preheating slow cooling laser cladding head as claimed in claim 4, wherein the outer side of the middle portion of the upper housing corresponding to each second powder feeding channel is provided with a carrier gas channel capable of communicating with the corresponding second powder feeding channel.
9. The adaptive preheating slow cooling laser cladding head according to claim 1, 2, 5, 7 or 8, further comprising an airtight pipe, wherein a first ring groove is formed outside the lower end of the second powder feeding channel, a second ring groove is formed outside the upper end of the third powder feeding channel, and the airtight pipe with the lower end located in the second ring groove at the corresponding position is arranged in the first ring groove; the upper fixing ring is sleeved outside the upper end of the upper shell, the upper end of the upper fixing ring is fixedly installed with the lower side of the end cover, at least two upper fixing bolts are distributed on the outer side of the upper fixing ring at intervals along the circumference, and the upper fixing ring is fixedly installed with the upper shell through the upper fixing bolts; the lower fixing ring is fixedly arranged on the outer side of the upper end of the lower shell, at least two lower fixing bolts are distributed on the lower side of the lower fixing ring at intervals along the circumference, and the lower fixing ring is fixedly arranged with the lower side of the upper shell through the lower fixing bolts; the first powder feeding channel is internally provided with a powder feeding joint of which the upper end is positioned above the end cover; or/and four first powder feeding channels which are communicated up and down are uniformly distributed on the upper side of the end cover along the circumference.
10. The adaptive preheating slow cooling laser cladding head according to claim 6, further comprising an airtight tube, wherein a first ring groove is formed outside the lower end of the second powder feeding channel, a second ring groove is formed outside the upper end of the third powder feeding channel, and the airtight tube with the lower end located in the second ring groove at the corresponding position is arranged in the first ring groove; the upper fixing ring is sleeved outside the upper end of the upper shell, the upper end of the upper fixing ring is fixedly installed with the lower side of the end cover, at least two upper fixing bolts are distributed on the outer side of the upper fixing ring at intervals along the circumference, and the upper fixing ring is fixedly installed with the upper shell through the upper fixing bolts; the lower fixing ring is fixedly arranged on the outer side of the upper end of the lower shell, at least two lower fixing bolts are distributed on the lower side of the lower fixing ring at intervals along the circumference, and the lower fixing ring is fixedly arranged with the lower side of the upper shell through the lower fixing bolts; the first powder feeding channel is internally provided with a powder feeding joint of which the upper end is positioned above the end cover; or/and four first powder feeding channels which are communicated up and down are uniformly distributed on the upper side of the end cover along the circumference.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022795913.0U CN213835540U (en) | 2020-11-27 | 2020-11-27 | Self-adaptive preheating slow-cooling laser cladding head |
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| CN202022795913.0U CN213835540U (en) | 2020-11-27 | 2020-11-27 | Self-adaptive preheating slow-cooling laser cladding head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147347A (en) * | 2021-11-30 | 2022-03-08 | 深圳信息职业技术学院 | Polishing device and magnetic field auxiliary polishing method |
| CN114192985A (en) * | 2021-11-30 | 2022-03-18 | 深圳信息职业技术学院 | Magnetic field assisted laser polishing device and magnetic field assisted polishing method |
-
2020
- 2020-11-27 CN CN202022795913.0U patent/CN213835540U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147347A (en) * | 2021-11-30 | 2022-03-08 | 深圳信息职业技术学院 | Polishing device and magnetic field auxiliary polishing method |
| CN114192985A (en) * | 2021-11-30 | 2022-03-18 | 深圳信息职业技术学院 | Magnetic field assisted laser polishing device and magnetic field assisted polishing method |
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