CN210826359U - Powder spreading nozzle for laser cladding gravity synchronous powder feeder - Google Patents
Powder spreading nozzle for laser cladding gravity synchronous powder feeder Download PDFInfo
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- CN210826359U CN210826359U CN201921308073.1U CN201921308073U CN210826359U CN 210826359 U CN210826359 U CN 210826359U CN 201921308073 U CN201921308073 U CN 201921308073U CN 210826359 U CN210826359 U CN 210826359U
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Abstract
The utility model discloses a shop's powder mouth that is used for laser cladding gravity to send powder ware in step, include: the device comprises a tube body, a powder feeding device and a powder feeding device, wherein the tube body is a hollow tube body with openings at two ends, and any end of the tube body is a powder inlet connected with a powder outlet of a laser cladding gravity synchronous powder feeder; the powder spreading port is arranged at the other end of the pipe body; the cross section of the powder paving opening is in a trapezoidal arrangement, and the width of the powder paving opening is matched with the size of the laser spot. The method can effectively avoid the occurrence of welding beading on the edge of the cladding layer in the laser cladding process.
Description
Technical Field
The utility model relates to a thermocouple protective case technical field, in particular to a spread powder mouth that is used for laser cladding gravity to send powder ware in step.
Background
The laser cladding technology is rapidly popularized and widely applied in recent years, the characteristic of extremely high energy of high-energy laser beam aggregation is utilized, an alloy or composite powder material which is preset on the surface of a base material or is synchronously and automatically fed with laser and has special physical, chemical or mechanical properties is completely melted at the same time, the base material is partially melted to form a new composite material, and the laser beam is rapidly solidified after being scanned to obtain a compact cladding layer which is combined with matrix metallurgy. For example, the high-temperature resistant and wear-resistant layer of the thermocouple well prepared by the method has the advantages of high hardness, metallurgical bonding, small heat affected zone, low dilution rate and the like.
The laser cladding powder feeding mechanism is an important component of a laser cladding processing system, and the uniformity and stability of powder feeding directly influence the molding quality of a cladding layer. The laser cladding is generally carried out by adopting a gravity synchronous powder feeding mode, powder materials are quantitatively discharged from a powder feeder through self gravity, then the powder materials are uniformly distributed on the surface to be processed through a powder paving port connected with the powder feeder, and then light beams of a laser are struck on the powder to form a molten pool. However, in the existing powder paving port structure, welding beading is easy to appear on the overlapping edge of each cladding strip of the cladding layer in the laser cladding process after powder paving is finished. The reason for this is that the shape and size of the powder spreading port are not matched with the size of the laser spot.
In summary, how to solve the problem that the edge of the cladding layer is easy to have flash in the laser cladding process has become a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model also aims at providing a shop's powder mouth for laser cladding gravity synchronous powder feeder can effectually avoid the beading to appear in the laser cladding in-process cladding layer edge.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a powder spreading nozzle for a laser cladding gravity synchronous powder feeder, including:
the device comprises a tube body, a powder feeding device and a powder feeding device, wherein the tube body is a hollow tube body with openings at two ends, and any end of the tube body is a powder inlet connected with a powder outlet of a laser cladding gravity synchronous powder feeder;
the powder spreading port is arranged at the other end of the pipe body; the cross section of the powder paving opening is in a trapezoidal arrangement, and the width of the powder paving opening is matched with the size of the laser spot.
Preferably, in the powder spreading nozzle for the laser cladding gravity synchronous powder feeder, the side cut surface of the powder spreading opening is in a shovel shape with a chamfer angle of 40-50 degrees.
Preferably, in the powder spreading nozzle for the laser cladding gravity synchronous powder feeder, the side cut surface of the powder spreading opening is in a shovel shape with a 45-degree oblique cut.
Preferably, in the powder paving nozzle for the laser cladding gravity synchronous powder feeder, a bending angle is arranged at one end of the pipe body, which is close to the powder paving opening, from the middle part of the pipe body, and the pipe body is in arc transition.
Preferably, in the powder spreading nozzle for the laser cladding gravity synchronous powder feeder, the angle of the bending angle is 120-135 degrees.
Preferably, in the powder spreading nozzle for the laser cladding gravity synchronous powder feeder, the powder spreading port is detachably connected with the pipe body; the outer wall of the connecting end of the powder spreading port and the pipe body is provided with an external thread; the inner wall of the connecting end of the pipe body and the powder paving opening is provided with an internal thread matched with the external thread, and the powder paving opening and the pipe body are connected with the internal thread in a screwing mode through the external thread.
Preferably, in the powder spreading nozzle for the laser cladding gravity synchronous powder feeder, the powder spreading openings are provided in a plurality of different widths.
Preferably, in the powder spreading nozzle for the laser cladding gravity synchronous powder feeder, a connection part of the tube body and the powder spreading port is a concave groove which is formed in the tube wall of the tube body, and the concave groove extends from the end part of the tube body to the inside of the tube body; the internal thread is arranged on the bottom surface of the groove; the depth of the groove is matched with the thickness of the powder paving opening, so that when the powder paving opening is screwed with the pipe body, the inner wall of the powder paving opening is flush with the inner wall of the pipe body.
The utility model discloses at least, include following beneficial effect:
the utility model discloses a to be used for the crosscut of the synchronous powder feeder of laser cladding gravity to set up to spread the powder mouth and personally submit trapezoidally, and the shape of the size adaptation of width and laser facula for spread the powder width of putting out of powder mouth and the size looks adaptation of laser facula, and then make and send to the alloy powder that treats cladding work surface can level and smooth, even, the edge appears the weld beading when preventing that every lane from cladding the strip overlap joint, guarantees laser cladding surface quality.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is an overall structure diagram of a powder spreading nozzle of the gravity synchronous powder feeder for laser cladding;
FIG. 2 is a cross-sectional view of the powder spreading port;
FIG. 3 is a side cut view of the powder spreading port.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-3, the utility model provides a spread powder mouth for laser cladding gravity synchronization powder feeder, include: the tube body 1 is a hollow tube body with openings at two ends, and any one end of the tube body is a powder inlet 3 connected with a powder outlet of a laser cladding gravity synchronous powder feeder.
The powder spreading port 3 is arranged at the other end of the pipe body 1; the cross section of the powder paving port 3 is in a trapezoidal arrangement, and the width of the powder paving port 3 is matched with the size of the laser spot.
In the scheme, the cross section of the powder spreading mouth of the gravity synchronous powder feeder for laser cladding is trapezoidal, and the width of the powder spreading mouth is matched with the size of a laser spot in shape, so that the powder spreading width of the powder spreading mouth is matched with the size of the laser spot, alloy powder delivered to the surface of a workpiece to be clad can be smooth and uniform, welding beading on the edge of each cladding strip during lapping is prevented, and the surface quality of laser cladding is ensured.
The cross section of the powder inlet is circular, so that the powder material can be more smoothly spread from the powder outlet of the powder feeder to the powder spreading port.
In a preferable scheme, the side section of the powder spreading opening 3 is in a shovel shape with a chamfer angle of 40-50 degrees.
In the scheme, the powder spreading opening is arranged to be in a shovel shape with a cross section being trapezoidal and a side section being obliquely cut by 40-50 degrees, so that the powder spreading opening can lead out the falling powder more uniformly and smoothly.
In a preferable scheme, the side section of the powder spreading opening 3 is in a shovel shape with a 45-degree oblique cut.
In the scheme, experiments show that when the side cut surface of the powder spreading opening is in a shovel shape of obliquely cutting 45 degrees, the powder spreading opening can lead out the falling powder most uniformly and smoothly.
In a preferred scheme, the pipe body 1 is provided with a bending angle from the middle part of the pipe body 1 to one end close to the powder spreading port 3, and the bending angle is in arc transition.
In the scheme, in order to ensure that the powder spreading flow velocity is relatively uniform, the problem of local accumulation or inconsistent powder spreading width caused by non-uniform flow velocity is avoided. Through design the angle of bending and take the circular arc transition at pipe shaft middle part for when powder material reachd the angle of bending position, its decline kinetic energy can obtain the buffering, and then makes powder material's velocity of flow more even.
In a preferable scheme, the angle of the bending angle is 120-135 degrees.
In the above scheme, in the practical application process, other angle ranges of the corresponding bending angle can be selected according to the practical requirement.
In a preferable scheme, the powder spreading opening 3 is detachably connected with the pipe body 1; the outer wall of the connecting end of the powder paving port 3 and the pipe body 1 is provided with an external thread; pipe shaft 1 with spread the inner wall of the link of powder mouth be provided with external screw thread complex internal thread, spread powder mouth 2 and pipe shaft 1 and pass through external screw thread and internal thread connect soon.
In the above scheme, spread powder mouth and pipe shaft through the setting and be connected for dismantling for can change the powder mouth of spreading of equidimension not according to the size difference of laser spot, spread the threaded connection of powder mouth and pipe shaft simultaneously, make the connection and the dismantlement of spreading powder mouth and pipe shaft more convenient.
In a preferable scheme, the powder spreading openings 3 are provided in a plurality of different widths of the powder spreading openings 2.
In above-mentioned scheme, the size of laser spot is related to laser focal length, consequently can be accurate according to laser focal length reachs the spot size, and then can calculate the width size of shop's powder mouth, then can select in a plurality of shop's powder mouths to use the suitable shop's powder mouth of width to be connected with the pipe shaft according to the width size of shop's powder mouth, then is used for shop's powder to in order to guarantee shop's powder width of shop's powder mouth and the size looks adaptation of laser spot.
In a preferable scheme, the joint of the tube body 1 and the powder spreading port 2 is a concave groove which is formed in the tube wall of the tube body 1, and the concave groove extends from the end part of the tube body 1 to the inside of the tube body 1; the internal thread is arranged on the bottom surface of the groove; the depth of the groove is matched with the thickness of the powder paving opening 2, so that when the powder paving opening 2 is screwed with the pipe body 1, the inner wall of the powder paving opening 2 is flush with the inner wall of the pipe body 1.
In above-mentioned scheme, through the recess that begins to extend to the pipe shaft inside at the tip of pipe shaft for spread the powder mouth with the pipe shaft spiral joint back, spread the inner wall of powder mouth and pipe shaft and flush, thereby make powdered material's velocity of flow more even, smooth and easy.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. A spread powder mouth for laser cladding gravity synchronization powder feeder, characterized by includes:
the device comprises a tube body, a powder feeding device and a powder feeding device, wherein the tube body is a hollow tube body with openings at two ends, and any end of the tube body is a powder inlet connected with a powder outlet of a laser cladding gravity synchronous powder feeder;
the powder spreading port is arranged at the other end of the pipe body; the cross section of the powder spreading port is in a trapezoidal arrangement, and the width of the powder spreading port is matched with the size of a laser spot;
the powder spreading opening is detachably connected with the pipe body; the outer wall of the connecting end of the powder spreading port and the pipe body is provided with an external thread; the inner wall of the connecting end of the pipe body and the powder paving opening is provided with an internal thread matched with the external thread, and the powder paving opening and the pipe body are connected with the internal thread in a screwing mode through the external thread.
2. The powder spreading nozzle for the laser cladding gravity-synchronized powder feeder according to claim 1, wherein the side cut surface of the powder spreading opening is in a shovel shape with a chamfer angle of 40-50 °.
3. The powder spreading nozzle for the laser cladding gravity-synchronized powder feeder according to claim 2, wherein a side cut surface of the powder spreading opening is in a shape of a shovel with a 45 ° chamfer.
4. The powder spreading nozzle for the laser cladding gravity synchronous powder feeder according to claim 1, wherein the tube body is provided with a bending angle from the middle part of the tube body to one end close to the powder spreading opening, and the bending angle is in arc transition.
5. The powder spreading nozzle for the laser cladding gravity-synchronous powder feeder according to claim 4, wherein the angle of the bending angle is 120 ° to 135 °.
6. The powder spreading nozzle for the laser cladding gravity-synchronized powder feeder according to claim 1, wherein the powder spreading port is provided in plurality with different widths.
7. The powder spreading nozzle for the laser cladding gravity-synchronous powder feeder according to claim 1, wherein the joint of the tube body and the powder spreading port is provided as a groove which is recessed into the tube wall of the tube body, and the groove extends from the end of the tube body to the inside of the tube body; the internal thread is arranged on the bottom surface of the groove; the depth of the groove is matched with the thickness of the powder paving opening, so that when the powder paving opening is screwed with the pipe body, the inner wall of the powder paving opening is flush with the inner wall of the pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921308073.1U CN210826359U (en) | 2019-08-13 | 2019-08-13 | Powder spreading nozzle for laser cladding gravity synchronous powder feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921308073.1U CN210826359U (en) | 2019-08-13 | 2019-08-13 | Powder spreading nozzle for laser cladding gravity synchronous powder feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210826359U true CN210826359U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921308073.1U Active CN210826359U (en) | 2019-08-13 | 2019-08-13 | Powder spreading nozzle for laser cladding gravity synchronous powder feeder |
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| Country | Link |
|---|---|
| CN (1) | CN210826359U (en) |
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2019
- 2019-08-13 CN CN201921308073.1U patent/CN210826359U/en active Active
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