CN216107205U - Synchronous auxiliary laser cladding preparation nondestructive coating device - Google Patents
Synchronous auxiliary laser cladding preparation nondestructive coating device Download PDFInfo
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- CN216107205U CN216107205U CN202121814658.8U CN202121814658U CN216107205U CN 216107205 U CN216107205 U CN 216107205U CN 202121814658 U CN202121814658 U CN 202121814658U CN 216107205 U CN216107205 U CN 216107205U
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Abstract
The utility model discloses a device for preparing a nondestructive coating by synchronous auxiliary laser cladding. It includes laser cladding system and synchronous ultrasonic shot-blasting system, and the laser cladding system mainly includes laser instrument, synchronous powder feeder, melts and covers the head, integrates the processing platform, laser instrument and synchronous powder feeder together are connected to and cover the head, and synchronous ultrasonic shot-blasting system includes drive screw, mobile controller, supersonic generator, transducer, peening chamber, peening steel ball and amplitude bar, and the transducer setting is on mobile controller, and supersonic generator is connected to the transducer, and the amplitude bar upper end of transducer stretches into the setting in the peening intracavity, fills the peening steel ball in the peening chamber. The utility model has the beneficial effects that: the cladding layer is synchronously strengthened through an improved synchronous ultrasonic shot blasting system, so that the surface hardness and the wear resistance of the coating are effectively improved; the utility model has more uniform treatment effect on the surface of the processed part, higher treatment efficiency and can realize better cladding coating strengthening effect.
Description
Technical Field
The utility model belongs to the technical field of material surface coating processing equipment, and particularly relates to a coating preparation device by a synchronous ultrasonic shot blasting auxiliary laser cladding technology.
Background
The laser cladding technology is a surface modification technology, which takes a high-energy laser beam as a heat source to simultaneously melt a cladding material and the surface of a metal matrix, and forms a metallurgical bonding interface coating with low dilution rate after rapid solidification, thereby obviously improving the physical properties of the surface of the matrix material, such as wear resistance, corrosion resistance, oxidation resistance and the like. By utilizing the laser cladding technology, the required high-wear-resistance, corrosion-resistance or oxidation-resistance coating material can be prepared on the surface of the base material with low cost according to the actual service working condition requirement of the workpiece material, thereby obviously improving the service performance and the service life of the workpiece or the part. Therefore, the laser cladding surface modification technology has wide application prospect in the industries of mines, metallurgy, traffic, petroleum, electric power and the like.
However, the melted cladding powder and the matrix are cooled and solidified at a very fast speed in the laser cladding process, and the defects of cracks, air holes and the like are easily generated in the coating due to the influence of solidification stress, coating materials and process factors, so that the service performance of the prepared coating is seriously damaged. In addition, because the cladding material and the matrix material usually have larger physical property difference, the phenomenon of cracking of the interface of the coating and the substrate is common, and the bonding capability of the coating is greatly reduced. Therefore, how to solve the problem of defects in the laser cladding coating and at the interface is the key to limit the development of the industry.
The solutions proposed in the prior art include: 1. ultrasonic vibration is directly introduced into a molten pool micro-area, and a stress field in a cladding layer is improved by virtue of the cavitation effect, the mechanical effect and the thermal effect of ultrasonic waves so as to inhibit the generation of cracks. 2. The vibration assistance is carried out on the cladding layer, so that the residual stress in the cladding layer can be reduced, and the effects of refining grains and homogenizing the structure are facilitated, thereby improving the structure and the performance of the cladding layer. 3. The ultrasonic impact auxiliary method is utilized to improve the tissue defect of the ultrahigh-speed laser cladding amorphous coating, and the aim of eliminating the solidification stress and the defect is fulfilled by adding an ultrasonic vibration head to a cladding area to generate a micro-forging effect. Although the above method has a beneficial effect on improving the structure and performance of the laser cladding coating, the ultrasonic vibration head is contacted with the surface of the cladding layer (the contact mode is nearly point contact), and the synchronous auxiliary strengthening effect is not ideal because the contact area is small, the cladding layer is difficult to be completely covered and the phenomenon of uneven strengthening effect in the cladding layer is easily caused.
Disclosure of Invention
In order to solve the problems, the utility model provides a device for preparing a coating by using a synchronous ultrasonic shot-peening auxiliary laser cladding technology, which can reduce the defects of cracks, air holes and the like in the coating and at the interface, improve the structure and the interface bonding strength of the coating, refine the grains on the surface layer of the coating and form residual compressive stress on the surface by performing synchronous ultrasonic shot-peening strengthening treatment on the coating after laser cladding, so as to prepare the laser cladding coating with better abrasion-resistant service performance and service life.
The specific technical scheme of the utility model is as follows:
the utility model provides a synchronous supplementary laser cladding preparation coating apparatus that does not harm, includes laser cladding system and synchronous ultrasonic shot-blasting system, wherein the laser cladding system mainly includes laser instrument, synchronous powder feeder, melts the covering head, integrates the processing platform, laser instrument and synchronous powder feeder together are connected to melts the covering head, melt the covering head and set up and integrate the processing platform processing side, synchronous ultrasonic shot-blasting system includes moving mechanism and ultrasonic shot-blasting mechanism, ultrasonic shot-blasting mechanism sets up in the moving mechanism upper end, ultrasonic shot-blasting mechanism sets up and melts covering head below, moving mechanism includes drive screw and mobile controller, mobile controller is connected with drive screw, drive screw control mobile controller is translational motion, ultrasonic shot-blasting mechanism includes supersonic generator, transducer, peening chamber, peening steel ball and amplitude pole, the energy converter is arranged on the mobile controller, the ultrasonic generator is connected to the energy converter, the upper end part of an amplitude rod of the energy converter extends into the shot blasting cavity, and shot blasting steel balls are filled in the shot blasting cavity.
Preferably, the shot blasting cavity is arranged below the cladding head, and the shot blasting cavity and the cladding head are located on the same vertical plane.
Preferably, the translation speed of the movement controller is the same as that of the cladding head, and the movement direction of the movement controller is the same as that of the cladding head.
Preferably, a shot-peening groove is formed in the middle of the shot-peening cavity, the outline of the shot-peening groove is the same as the outline of the processing component, and the processing component can be arranged in the shot-peening groove in a supporting mode so as to be convenient to process.
Preferably, the shot-blasting opening of the shot-blasting groove is attached to the surface of the processing component.
Preferably, the synchronous powder feeder is connected with an argon gas feeding device, the argon gas feeding device provides argon gas for the synchronous powder feeder to feed powder, and the cladding process is performed under the protection of argon gas.
Preferably, the laser and the synchronous powder feeder are used for carrying out surface deposition cladding coating in a coaxial powder feeding mode.
Preferably, the movement of the ultrasonic shot blasting system and the movement of the cladding head are independently controlled by the system so as to realize shot blasting reinforcement processing at different times after the solidification of the cladding layer, and the ultrasonic frequency, the amplitude and the size of shot blasting steel balls in the ultrasonic shot blasting system can be adjusted.
Preferably, the laser is a fiber laser, the power is continuously adjusted within the range of 0-6 KW, and the continuous and stable adjustment of the laser intensity can be realized.
Preferably, the cladding head is in a central powder feeding mode.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts the improved ultrasonic shot blasting system to synchronously strengthen the cladding layer, reduces the defects of cracks, air holes and the like in the coating and at the interface, and enhances the compactness and the interface bonding strength of the coating;
2, after the surface of the cladding layer is treated by using a novel synchronous ultrasonic shot blasting system, grains inside the coating can be induced to be refined, a gradient structure tissue from the surface to the inside is formed, and the surface hardness and the wear resistance of the coating are improved;
3, after the coating is processed by the novel synchronous ultrasonic shot blasting system, residual compressive stress is formed on the surface of the coating, so that the fatigue resistance of the coating can be obviously improved, and the service life of the coating can be prolonged;
compared with the common ultrasonic vibration auxiliary treatment, the novel synchronous ultrasonic shot blasting system used in the utility model combines a laser cladding system to achieve more uniform treatment effect on the surface of a processed part and higher treatment efficiency, and shot blasting steel balls used for strengthening treatment can be made of better and more appropriate materials and sizes according to requirements, so that better cladding coating strengthening effect is achieved.
Drawings
FIG. 1 is a schematic view of a device for preparing a nondestructive coating by synchronous auxiliary laser cladding.
FIG. 2 is a schematic structural diagram of a synchronous ultrasonic peening auxiliary system.
FIG. 3 is a sectional view taken along the line A-A of the synchronized ultrasonic peening assist system.
Fig. 4 is an enlarged schematic diagram of the synchronous ultrasonic shot blasting auxiliary system at the B part.
The reference numerals are explained below:
1-laser, 2-synchronous powder feeder, 3-cladding head, 4-integrated processing platform, 5-ultrasonic generator, 6-transducer, 7-driving screw, 8-shot blasting cavity, 9-processing component, 10-motion controller, 11-shot blasting steel ball and 12-amplitude rod.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
To further clarify the objects, features and functions of the present invention, a review board will be provided by referring to the following description of the preferred embodiments in conjunction with the accompanying drawings:
as shown in fig. 1-4, the utility model is a device for preparing a nondestructive coating by synchronous auxiliary laser cladding, which comprises a laser cladding system and a synchronous ultrasonic shot blasting system, wherein the laser cladding system mainly comprises a laser 1, a synchronous powder feeder 2, a cladding head 3 and an integrated processing platform 4, the laser 1 and the synchronous powder feeder 2 are connected to the cladding head 3 together, the cladding head 3 is arranged on the processing side of the integrated processing platform 4, the synchronous ultrasonic shot blasting system comprises a moving mechanism and an ultrasonic shot blasting mechanism, the ultrasonic shot blasting mechanism is arranged at the upper end of the moving mechanism, the ultrasonic shot blasting mechanism is arranged below the cladding head 3, the moving mechanism comprises a transmission lead screw 7 and a moving controller 10, the moving controller 10 is connected with the transmission lead screw, the transmission lead screw 7 controls the moving controller 10 to move in a translation manner, and the ultrasonic shot blasting mechanism comprises an ultrasonic generator 5, a shot blasting mechanism, Transducer 6, peening chamber 8, peening steel ball 11 and amplitude pole 12, transducer 6 sets up on mobile controller 10, supersonic generator 5 is connected to transducer 6, the setting is stretched into in peening chamber 8 in the amplitude pole 12 upper end of transducer 6, the intussuseption of peening chamber 8 intussuseption is filled peening steel ball 11.
Preferably, the shot blasting cavity 8 is arranged below the cladding head 3, and the shot blasting cavity 8 and the cladding head 3 are located on the same vertical plane.
Preferably, the translation speed of the movement controller 10 is the same as that of the cladding head 3, and the movement direction of the movement controller 10 is the same as that of the cladding head 3.
Preferably, a shot-peening groove is arranged in the middle of the shot-peening chamber 8, the outline of the shot-peening groove is the same as the outline of the processing component 9, and the processing component 9 can be arranged in the shot-peening groove in a bearing mode so as to be processed conveniently.
Preferably, the shot-peening mouth of the shot-peening groove is in surface contact with the machined part 9.
Preferably, the synchronous powder feeder 2 is connected to an argon gas feeding device, the argon gas feeding device provides argon gas to the synchronous powder feeder 2 for powder feeding, and the cladding process is performed under the protection of argon gas.
Preferably, the laser 1 and the synchronous powder feeder 2 are used for carrying out surface deposition cladding coating in a coaxial powder feeding mode.
Preferably, the movement of the ultrasonic shot blasting system and the movement of the cladding head 3 are independently controlled by the system so as to realize shot peening strengthening treatment at different times after the solidification of the cladding layer, and the ultrasonic frequency, the amplitude and the size of the shot-peening steel ball 11 in the ultrasonic shot blasting system can be adjusted.
Preferably, the laser 1 is a fiber laser 1, the power is continuously adjusted within the range of 0-6 KW, and the continuous and stable adjustment of the laser intensity can be realized.
Preferably, the cladding head 3 is in a center powder feeding mode.
Example (b):
the utility model comprises a laser cladding system and a synchronous ultrasonic shot blasting system, and mainly comprises a laser 1, a synchronous powder feeder 2, a cladding head 3, an integrated processing platform 4, an ultrasonic generator 5, a transducer 6, a transmission screw 7, a shot blasting cavity 8, a processing part 9, a mobile controller 10, a shot blasting steel ball 11 and an amplitude rod 12.
Before processing, firstly, fixing a part 9 to be processed on the integrated processing platform 4, and removing rust and stains on the surface of the processed part 9; placing the powder to be clad in a vacuum drying oven, baking and dehumidifying at 100-150 ℃, and then adding the powder into a synchronous powder feeder 2; setting parameters of a laser cladding system according to processing requirements, wherein the parameters comprise laser power, powder feeding rate, shaft sample rotating speed, cladding head translation rate and the like; the ultrasonic shot blasting mechanism is adjusted to be just below the cladding head 3 through the moving controller 10, so that the shot blasting cavity 8 and the cladding head 3 are located on the same vertical plane, the moving speed of the moving mechanism is the same as that of the cladding head 3, and the moving direction of the moving controller 10 is the same as that of the cladding head 3.
During the processing, the water-soluble glass fiber is subjected to a treatment,
firstly, a powder feeder 2 is started, an argon gas feeding device is matched, and argon gas is used for feeding covering powder to a cladding head 3 through the argon gas feeding device; after powder feeding is uniform, the integrated processing platform 4 and the laser 1 are started, the laser 1 and the synchronous powder feeder 2 adopt a coaxial powder feeding mode to prepare a cladding coating on the surface of a processing part 9, an ultrasonic shot blasting system is started, the ultrasonic generator 5 is started, the shot blasting steel balls 11 filled in the shot blasting cavities 8 are activated through the transducer 6 and the amplitude rod 12 to carry out synchronous ultrasonic shot blasting strengthening treatment on the cladding coating which is just prepared, macro-micro defects in the coating and on the outer surface of the processing part 9 are reduced, and the internal structure and the surface stress state of the cladding coating are improved, so that the cladding coating which is free of defects, better in abrasion-resistant service performance and longer in service life is obtained.
And the wear-resistant coating prepared by the laser cladding system is synchronously strengthened by combining with an auxiliary device of a synchronous ultrasonic shot blasting system so as to eliminate macro-micro defects in the solidification process of the cladding layer and refine the residual compressive stress of coating crystal grains and the prefabricated surface, thereby obtaining the wear-resistant coating with excellent service performance and service life.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a synchronous supplementary laser cladding preparation coating apparatus that does not harm, a serial communication port, including laser cladding system and synchronous ultrasonic peening system, wherein the laser cladding system mainly includes laser instrument, synchronous powder feeder, melts the covering head, integrates the processing platform, laser instrument and synchronous powder feeder together are connected to and melt the covering head, it is integrating the processing side to melt the covering head setting, synchronous ultrasonic peening system includes moving mechanism and ultrasonic peening mechanism, ultrasonic peening mechanism sets up in the moving mechanism upper end, ultrasonic peening mechanism sets up in melting the covering head below, moving mechanism includes drive screw and motion control ware, motion control ware is connected with drive screw, drive screw control motion control ware is translational motion, ultrasonic peening mechanism includes supersonic generator, transducer, peening chamber, Shot-blasting steel ball and amplitude pole, the transducer sets up on mobile controller, supersonic generator is connected to the transducer, the setting is stretched into in the peening intracavity to the amplitude pole upper end of transducer, the shot-blasting steel ball is filled to the peening intracavity.
2. The apparatus of claim 1, wherein the peening chamber is disposed below the cladding head, and the peening chamber and the cladding head are in the same vertical plane.
3. The apparatus of claim 1, wherein the translation speed of the moving controller is the same as that of the cladding head, and the moving direction of the moving controller is the same as that of the cladding head.
4. The apparatus for preparing nondestructive coating by synchronous auxiliary laser cladding as claimed in claim 1, wherein the blasting chamber is opened with a blasting groove in the middle.
5. The apparatus for preparing nondestructive coating by synchronous auxiliary laser cladding as claimed in claim 4, wherein the peening mouth of the peening groove is in contact with the surface of the processed component.
6. The apparatus of claim 1, wherein the synchronous powder feeder is connected to an argon gas supply device, and the argon gas supply device supplies argon gas to the synchronous powder feeder for powder feeding.
7. The apparatus of claim 1, wherein the laser and the synchronous powder feeder are coaxial to perform surface deposition cladding.
8. The apparatus of claim 1, wherein the movement of the ultrasonic peening system and the movement of the cladding head are controlled by an independent system.
9. The apparatus of claim 1 or 7, wherein the laser is a fiber laser and the power is continuously adjusted to 0-6 KW.
10. The apparatus of claim 1, wherein the cladding head is a center powder feeding type.
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| CN202121814658.8U CN216107205U (en) | 2021-08-04 | 2021-08-04 | Synchronous auxiliary laser cladding preparation nondestructive coating device |
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| CN202121814658.8U CN216107205U (en) | 2021-08-04 | 2021-08-04 | Synchronous auxiliary laser cladding preparation nondestructive coating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774373A (en) * | 2021-08-04 | 2021-12-10 | 华能汕头海门发电有限责任公司 | Method for preparing defect-free wear-resistant corrosion-resistant coating by synchronous ultrasonic shot blasting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774373A (en) * | 2021-08-04 | 2021-12-10 | 华能汕头海门发电有限责任公司 | Method for preparing defect-free wear-resistant corrosion-resistant coating by synchronous ultrasonic shot blasting |
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