Plate material composite treatment device based on laser cladding

Abstract

The utility model discloses a plate material composite processing device based on laser cladding. The plate material composite processing device comprises a laser cladding device, a processing platform, a first rolling mill and a second rolling mill, the machining platform is located between the first rolling mill and the second rolling mill, and during working, a plate sequentially passes through the first rolling mill, the machining platform and the second rolling mill; the first rolling mill comprises two rollers, and a plate passes through the space between the two rollers; the second rolling mill and the first rolling mill are the same in structure and arrangement height. The machining platform comprises a free roller, a plate passes through the upper portion of the free roller, and the position above the free roller is higher than the position between two rollers of the first rolling mill and the second rolling mill, so that the whole plate is in an arch shape in the conveying process; the laser cladding device is arranged above the machining platform and used for achieving laser cladding on the surface of the plate, and a laser cladding area is located at the highest point of the arched plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder metallurgy processing technical field especially is a kind of plate material composite processing device based on laser cladding. BACKGROUND

[0002] With the rapid development of modern industrial level, the industrial products of manufacturing industry are no longer limited to how to manufacture products, but how to better optimize and improve the performance of products. Material is the basis of industrial production and is the most important. But in the preparation of materials, it is often a single material, which is often unsatisfactory for some performance requirements of products in industrial production. Therefore, the method of material composite to improve the performance of original base material gradually appears, and the technical means of laser cladding is used, which can solve the problem of improving the performance of base material.

[0003] Laser cladding technology is a new type of surface modification technology. The principle of this technology is to add cladding material to the surface of the base material by preposition, and then irradiate the cladding material and the base material in the molten pool by high-energy density laser beam to form a cladding layer, so that the base material can be better combined with the material. The dilution of the cladding layer formed by laser cladding is low, the bonding force is strong, and the base material is metallurgically combined. It can significantly improve the wear resistance, corrosion resistance, heat resistance, strength and other properties of the surface of the base material. Compared with electroplating, spraying and welding other material composite methods, laser cladding has the characteristics of small dilution, fine organization and many types of cladding materials.

[0004] At present, the material composite of plate is by spraying, but the spraying treatment method sometimes can not make the composite material well integrated with the base material, and the metallographic structure is not dense enough. Therefore, laser cladding method can be used for composite. However, considering the shape and nature of the plate, the plate is flat and the flatness is sometimes uneven. When laser cladding is carried out, since laser is a super-high intensity heat source, the composite material is melted on the plate to form a cladding layer. Therefore, if the plate is placed freely for cladding, the cladding part of the plate will expand due to high-intensity heating, the internal stress will increase sharply, and the temperature of other parts will be different from that of the processing part, which will cause the plate to warp and deform, and damage the original shape. Finally, the formed part does not meet the expected requirements and the uniformity of cladding is not the same, which leads to the failure of material composite.

[0005] In addition, powder splashing is a common problem in the laser cladding powder spraying process. Splashing can cause powder loss and uneven deposition, affecting the quality and efficiency of the finished product. Moreover, it can also directly affect the safety of technical operators, who need to wear dust masks and even inhale powder into their lungs. Current solutions include optimizing powder spraying parameters and using anti-splashing nozzles. However, these solutions do not solve the problem of powder splashing and have low powder recovery rates, increasing costs and resource consumption.

[0006] Therefore, it is necessary to design a plate material composite processing device based on laser cladding to solve the above problems. Invention content

[0007] To solve the problems raised in the background art, the technical solution adopted by the present application is:

[0008] A plate material composite processing device based on laser cladding, comprising a laser cladding device, a processing platform, a first rolling mill and a second rolling mill;

[0009] The processing platform is located between the first rolling mill and the second rolling mill. During operation, the plate material passes through the first rolling mill, the processing platform and the second rolling mill in sequence.

[0010] The first rolling mill includes two rollers, and the plate material passes between the two rollers.

[0011] The second rolling mill and the first rolling mill have the same structure and height.

[0012] The processing platform includes a free roller, and the plate material passes above the free roller. The position above the free roller is higher than the position between the two rollers of the first rolling mill and the second rolling mill, so that the plate material as a whole assumes an arch shape during transmission.

[0013] The laser cladding device is arranged above the processing platform. The laser cladding device is used to realize laser cladding on the surface of the plate material, and the laser cladding area is located at the highest point of the arch-shaped plate material.

[0014] In some embodiments, the laser cladding device includes a work head.

[0015] The shell of the work head has a downward trumpet shape, and inside the shell of the work head, a powder return channel, a powder feeding channel and a laser head are arranged in sequence from the outside to the inside.

[0016] The powder return channel and the powder feeding channel are separated by the outer wall of the powder feeding channel.

[0017] The powder feeding channel is used to provide an outward airflow to feed out the powder.

[0018] The powder return channel is used to provide negative pressure to recover the powder.

[0019] The laser head is used to generate laser and cooperate with the powder delivered by the powder delivery channel to realize laser cladding.

[0020] In some embodiments, the laser cladding device further comprises a powder feeder, a powder delivery pipe and a powder return pipe.

[0021] In the working head, the upper end of the powder delivery channel is in communication with one end of the powder delivery pipe, and the upper end of the powder return channel is in communication with one end of the powder return pipe.

[0022] The other end of the powder delivery pipe and the powder return pipe are both in communication with the powder feeder.

[0023] The powder feeder is used to deliver powder to the powder delivery channel of the working head through the powder delivery pipe by means of air-borne powder delivery, and collect the powder returned from the powder return pipe.

[0024] In some embodiments, the laser cladding device further comprises a powder screening machine and a powder return bin.

[0025] The powder return pipe is divided into multiple sections, and the powder return channel of the working head is in communication with the upper port of the powder screening machine through one section of the powder return pipe.

[0026] The powder screening machine is used to filter and screen the returned powder, so that only the powder with a particle size meeting the requirements can pass through.

[0027] The lower port of the powder screening machine is in communication with the upper port of the powder return bin through one section of the powder return pipe.

[0028] The lower port of the powder return bin is in communication with the powder feeder through one section of the powder return pipe, and a powder return power device is arranged in the powder return bin to generate negative pressure, so as to collect the powder at the lower end of the powder return channel and return the screened powder to the powder feeder.

[0029] In some embodiments, the powder return pipe between the powder return channel of the working head and the powder screening machine is divided into two branches, and the two branches of the powder return pipe are symmetrically arranged.

[0030] The end of the powder delivery pipe close to the working head is located between the two branches of the powder return pipe.

[0031] In some embodiments, the lower end of the powder delivery channel of the working head is narrowed inward to form a nozzle structure.

[0032] Compared with the prior art, the plate material composite treatment device based on laser cladding has the advantages that the plate material is straightened by two rolling mills, laser cladding is performed on the plate material in an arch shape, and the plate material is kept in a production shape requirement, so that a formed piece meeting production requirements and standards is finally obtained, the problems of plate material warping and uneven cladding caused by uneven internal stress due to thermal expansion during plate material cladding are effectively solved, the plate material formed piece with uniform material composite and strong organization performance is obtained, and the material composite quality of the plate material is improved; in addition, the laser cladding device capable of automatically recycling powder is adopted, so that the cladding powder resources are saved, the material research and development cost is saved, the environment of workers is improved, and the harm of powder splashing to cladding personnel is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic view of the plate material composite treatment device based on laser cladding provided by the utility model;

[0034] Figure 2 is a schematic view of the laser cladding device;

[0035] Figure 3 is a schematic view of another perspective of the laser cladding device;

[0036] Figure 4 is a sectional view of the laser cladding device.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1, work head; 2, powder return channel; 3, powder feeding channel; 4, laser head; 5, powder feeder; 6, powder feeding pipe; 7, powder return pipe; 8, powder screening machine; 9, powder return bin; 10, laser cladding device; 20, machining platform; 21, free roller; 30, first rolling mill; 31, roller; 40, second rolling mill; 50, plate material. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the following further describes how the utility model is implemented in combination with the drawings and specific embodiments.

[0040] REFERENCE Figure 1The utility model provides a kind of plate material composite processing device based on laser cladding, including laser cladding device 10, processing platform 20, first rolling mill 30 and second rolling mill 40;Processing platform 20 is located between first rolling mill 30 and second rolling mill 40, when working, plate 50 sequentially passes through first rolling mill 30, processing platform 20 and second rolling mill 40;First rolling mill 30 includes two rolls 31, and plate 50 passes between two rolls 31;Second rolling mill 40 and first rolling mill 30 are same in structure and setting height;Processing platform 20 includes free roller 21, and plate 50 passes above free roller 21, and the position above free roller 21 is higher than the position between two rolls 31 of first rolling mill 30 and second rolling mill 40, so that plate 50 is overall arched in transmission;Laser cladding device 10 is arranged above processing platform 20, and laser cladding device 10 is used to realize the laser cladding of the surface of plate 50, and the laser cladding area is located at the highest point of arched plate 50.

[0041] When working, the motor of processing platform 20, first rolling mill 30 and second rolling mill 40 is started, so that plate is sent at uniform speed (such as 3cm / s) from between two rolls 31 of first rolling mill 30, reaches above free roller 21 of processing platform 20, completes laser cladding, and is sent out from between two rolls of second rolling mill 40.

[0042] It can be seen that the plate material composite processing device based on laser cladding provided by the utility model straightens plate by two rolling mills, makes plate arched for laser cladding, and makes plate keep production shape requirement, finally obtains formed piece meeting production requirement and standard, effectively solves the problems of plate warping and uneven cladding caused by thermal expansion and uneven internal stress during plate cladding, is beneficial to obtaining plate formed piece with uniform material compounding and strong organization performance, and improves the material compounding quality of plate.

[0043] Further referring to Figures 2-4 As shown in one specific embodiment, laser cladding device 10 includes work head 1;The shell of work head 1 is in the shape of downward horn mouth, and in the shell of work head 1, from outside to inside, back powder channel 2, powder feeding channel 3 and laser head 4 are sequentially arranged;Back powder channel 2 and powder feeding channel 3 are separated by the outer wall of powder feeding channel 3;Powder feeding channel 3 is used to provide air flow outward to send out powder;Back powder channel 2 is used to provide negative pressure to recover powder;Laser head 4 is used to generate laser, and cooperate with the powder sent by powder feeding channel 3 to realize laser cladding.

[0044] The utility model discloses through such structure, the cladding powder splashed in the process of automatic recovery laser cladding, to save research and development consumables, reduce cladding cost.

[0045] Preferably, the laser cladding device 10 further comprises a powder feeder 5, a powder feeding pipe 6 and a powder returning pipe 7; the upper end of the powder feeding channel 3 is communicated with one end of the powder feeding pipe 6, and the upper end of the powder returning channel 2 is communicated with one end of the powder returning pipe 7 in the work head 1; the other end of the powder feeding pipe 6 and the powder returning pipe 7 are communicated with the powder feeder 5; the powder feeder 5 is used for feeding the powder to the powder feeding channel 3 of the work head 1 through the powder feeding pipe 6 by means of air-borne powder feeding, and collecting the powder returned from the powder returning pipe 7.

[0046] Preferably, the laser cladding device 10 further comprises a powder screening machine 8 and a powder returning bin 9; the powder returning pipe 7 is divided into multiple sections, the powder returning channel 2 of the work head 1 is communicated to the upper port of the powder screening machine 8 through one section of the powder returning pipe 7; the powder screening machine 8 is used for filtering and screening the returned powder, so that only the powder with a particle size meeting the requirements can pass through; the lower port of the powder screening machine 8 is communicated to the upper port of the powder returning bin 9 through one section of the powder returning pipe 7; the lower port of the powder returning bin 9 is communicated to the powder feeder 5 through one section of the powder returning pipe 7, and the powder returning bin 9 is provided with a powder returning power device for generating negative pressure to return the powder at the lower end of the powder returning channel 2 and return the screened powder to the powder feeder 5.

[0047] The utility model discloses a powder screening machine 8 is filtered to the powder of recycling, thereby removes the splashing powder of larger particle size, improves the splashing powder availability, speeds up the powder cleaning process, saves time cost.

[0048] Preferably, the powder returning pipe 7 between the powder returning channel 2 of the work head 1 and the powder screening machine 8 is divided into two branches, and the two branches of the powder returning pipe 7 are symmetrically arranged; one end of the powder feeding pipe 6 close to the work head 1 is located between the two branches of the powder returning pipe 7.

[0049] Preferably, the lower end of the powder feeding channel 3 of the work head 1 is narrowed inward to form a nozzle structure.

[0050] When laser cladding is performed, the powder feeder 5 feeds the powder to the nozzle structure at the end of the powder feeding channel 3 through the powder feeding pipe 6 and the powder feeding channel 3, generates laser in combination with the laser head 4, melts the sprayed powder onto the surface of the plate 50, and returns the splashed powder to the powder screening machine 8 through the two branches of the powder returning pipe 7 for filtering and removing the splashed powder of larger particle size.

[0051] The utility model discloses a laser cladding device capable of automatically recycling powder, which realizes saving of cladding powder resources, saving of material research and development cost, improvement of the environment of workers, and reduction of harm of powder splashing to cladding personnel.

[0052] Finally, it is pointed out that the above embodiments are only to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A composite processing device for sheet materials based on laser cladding, characterized in that, The application relates to a laser cladding device (10), a machining platform (20), a first rolling mill (30) and a second rolling mill (40). The machining platform (20) is located between the first rolling mill (30) and the second rolling mill (40), and a plate (50) sequentially passes through the first rolling mill (30), the machining platform (20) and the second rolling mill (40) during operation. The first rolling mill (30) comprises two rollers (31), and the plate (50) passes between the two rollers (31). The second rolling mill (40) has the same structure and setting height as the first rolling mill (30). The machining platform (20) comprises a free roller (21), the plate (50) passes above the free roller (21), and the position above the free roller (21) is higher than the position between the two rollers (31) of the first rolling mill (30) and the second rolling mill (40), so that the plate (50) is in an overall arc shape during transmission. The laser cladding device (10) is arranged above the machining platform (20), and the laser cladding device (10) is used for realizing laser cladding on the surface of the plate (50), and a laser cladding area is located at the highest point of the arc-shaped plate (50).

2. The laser cladding based plate material composite processing apparatus according to claim 1, characterized by, The laser cladding device (10) comprises a working head (1). The shell of the working head (1) is in a downward trumpet shape, and a powder returning channel (2), a powder feeding channel (3) and a laser head (4) are sequentially arranged in the shell of the working head (1) from outside to inside. The powder returning channel (2) and the powder feeding channel (3) are separated by the outer wall of the powder feeding channel (3). The powder feeding channel (3) is used for providing an outward airflow to feed out powder. The powder returning channel (2) is used for providing negative pressure to recycle powder. The laser head (4) is used for generating laser and cooperating with the powder fed out by the powder feeding channel (3) to realize laser cladding.

3. The laser cladding based plate material composite processing apparatus according to claim 2, characterized by, The laser cladding device (10) further comprises a powder feeder (5), a powder feeding pipe (6) and a powder returning pipe (7). In the working head (1), the upper end of the powder feeding channel (3) is in communication with one end of the powder feeding pipe (6), and the upper end of the powder returning channel (2) is in communication with one end of the powder returning pipe (7). The other ends of the powder feeding pipe (6) and the powder returning pipe (7) are in communication with the powder feeder (5). The powder feeder (5) is used for feeding powder to the powder feeding channel (3) of the working head (1) through air-borne powder feeding, and collecting the recycled powder from the powder returning pipe (7).

4. The laser cladding based plate material composite processing apparatus according to claim 3, characterized by, The laser cladding device (10) further comprises a powder screening machine (8) and a powder returning bin (9). The powder returning pipe (7) is divided into multiple sections, the powder returning channel (2) of the working head (1) is connected to the upper port of the powder screening machine (8) through one section of the powder returning pipe (7). The powder screening machine (8) is used for filtering and screening the recycled powder, so that only the powder with a required particle size can pass through. The lower port of the powder screening machine (8) is connected to the upper port of the powder returning bin (9) through one section of the powder returning pipe (7). The lower end of the return powder bin (9) is connected to the powder feeder (5) through a return powder pipe (7), and a return powder power device is arranged in the return powder bin (9) to generate negative pressure to recover the powder at the lower end of the return powder channel (2) and return the screened powder to the powder feeder (5).

5. The laser cladding based plate material composite processing apparatus according to claim 4, characterized by The return powder pipe (7) between the return powder channel (2) of the working head (1) and the powder screening machine (8) is divided into two branches, and the two branches of the return powder pipe (7) are symmetrically arranged. The end of the powder feeding pipe (6) close to the working head (1) is located between the two branches of the return powder pipe (7).

6. The laser cladding based plate material composite processing apparatus according to claim 2, characterized by, The lower end of the powder feeding channel (3) of the working head (1) is narrowed inward to form a nozzle structure.

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